Upgrade protobuf dependencies

go.mod

@@ -4,7 +4,7 @@ go 1.15
 
 require (
 	github.com/eclipse/paho.mqtt.golang v1.2.0
-	github.com/golang/protobuf v1.3.4
+	github.com/golang/protobuf v1.4.2
 	github.com/sirupsen/logrus v1.4.2
 	github.com/testcontainers/testcontainers-go v0.3.0
 	golang.org/x/net v0.0.0-20200904194848-62affa334b73 // indirect

go.sum

@@ -39,10 +39,19 @@ github.com/golang/glog v0.0.0-20160126235308-23def4e6c14b/go.mod h1:SBH7ygxi8pfU
 github.com/golang/mock v1.1.1/go.mod h1:oTYuIxOrZwtPieC+H1uAHpcLFnEyAGVDL/k47Jfbm0A=
 github.com/golang/protobuf v1.2.0/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U=
 github.com/golang/protobuf v1.3.2/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U=
-github.com/golang/protobuf v1.3.4 h1:87PNWwrRvUSnqS4dlcBU/ftvOIBep4sYuBLlh6rX2wk=
+github.com/golang/protobuf v1.4.0-rc.1/go.mod h1:ceaxUfeHdC40wWswd/P6IGgMaK3YpKi5j83Wpe3EHw8=
-github.com/golang/protobuf v1.3.4/go.mod h1:vzj43D7+SQXF/4pzW/hwtAqwc6iTitCiVSaWz5lYuqw=
+github.com/golang/protobuf v1.4.0-rc.1.0.20200221234624-67d41d38c208/go.mod h1:xKAWHe0F5eneWXFV3EuXVDTCmh+JuBKY0li0aMyXATA=
+github.com/golang/protobuf v1.4.0-rc.2/go.mod h1:LlEzMj4AhA7rCAGe4KMBDvJI+AwstrUpVNzEA03Pprs=
+github.com/golang/protobuf v1.4.0-rc.4.0.20200313231945-b860323f09d0/go.mod h1:WU3c8KckQ9AFe+yFwt9sWVRKCVIyN9cPHBJSNnbL67w=
+github.com/golang/protobuf v1.4.0/go.mod h1:jodUvKwWbYaEsadDk5Fwe5c77LiNKVO9IDvqG2KuDX0=
+github.com/golang/protobuf v1.4.2 h1:+Z5KGCizgyZCbGh1KZqA0fcLLkwbsjIzS4aV2v7wJX0=
+github.com/golang/protobuf v1.4.2/go.mod h1:oDoupMAO8OvCJWAcko0GGGIgR6R6ocIYbsSw735rRwI=
 github.com/google/go-cmp v0.2.0 h1:+dTQ8DZQJz0Mb/HjFlkptS1FeQ4cWSnN941F8aEG4SQ=
 github.com/google/go-cmp v0.2.0/go.mod h1:oXzfMopK8JAjlY9xF4vHSVASa0yLyX7SntLO5aqRK0M=
+github.com/google/go-cmp v0.3.0/go.mod h1:8QqcDgzrUqlUb/G2PQTWiueGozuR1884gddMywk6iLU=
+github.com/google/go-cmp v0.3.1/go.mod h1:8QqcDgzrUqlUb/G2PQTWiueGozuR1884gddMywk6iLU=
+github.com/google/go-cmp v0.4.0 h1:xsAVV57WRhGj6kEIi8ReJzQlHHqcBYCElAvkovg3B/4=
+github.com/google/go-cmp v0.4.0/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
 github.com/google/gofuzz v1.0.0/go.mod h1:dBl0BpW6vV/+mYPU4Po3pmUjxk6FQPldtuIdl/M65Eg=
 github.com/gorilla/context v1.1.1 h1:AWwleXJkX/nhcU9bZSnZoi3h/qGYqQAGhq6zZe/aQW8=
 github.com/gorilla/context v1.1.1/go.mod h1:kBGZzfjB9CEq2AlWe17Uuf7NDRt0dE0s8S51q0aT7Yg=
@@ -126,11 +135,20 @@ golang.org/x/time v0.0.0-20181108054448-85acf8d2951c h1:fqgJT0MGcGpPgpWU7VRdRjuA
 golang.org/x/time v0.0.0-20181108054448-85acf8d2951c/go.mod h1:tRJNPiyCQ0inRvYxbN9jk5I+vvW/OXSQhTDSoE431IQ=
 golang.org/x/tools v0.0.0-20180810170437-e96c4e24768d/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
 golang.org/x/tools v0.0.0-20180828015842-6cd1fcedba52/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
+golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543 h1:E7g+9GITq07hpfrRu66IVDexMakfv52eLZ2CXBWiKr4=
+golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
 google.golang.org/appengine v1.1.0/go.mod h1:EbEs0AVv82hx2wNQdGPgUI5lhzA/G0D9YwlJXL52JkM=
 google.golang.org/genproto v0.0.0-20180817151627-c66870c02cf8 h1:Nw54tB0rB7hY/N0NQvRW8DG4Yk3Q6T9cu9RcFQDu1tc=
 google.golang.org/genproto v0.0.0-20180817151627-c66870c02cf8/go.mod h1:JiN7NxoALGmiZfu7CAH4rXhgtRTLTxftemlI0sWmxmc=
 google.golang.org/grpc v1.17.0 h1:TRJYBgMclJvGYn2rIMjj+h9KtMt5r1Ij7ODVRIZkwhk=
 google.golang.org/grpc v1.17.0/go.mod h1:6QZJwpn2B+Zp71q/5VxRsJ6NXXVCE5NRUHRo+f3cWCs=
+google.golang.org/protobuf v0.0.0-20200109180630-ec00e32a8dfd/go.mod h1:DFci5gLYBciE7Vtevhsrf46CRTquxDuWsQurQQe4oz8=
+google.golang.org/protobuf v0.0.0-20200221191635-4d8936d0db64/go.mod h1:kwYJMbMJ01Woi6D6+Kah6886xMZcty6N08ah7+eCXa0=
+google.golang.org/protobuf v0.0.0-20200228230310-ab0ca4ff8a60/go.mod h1:cfTl7dwQJ+fmap5saPgwCLgHXTUD7jkjRqWcaiX5VyM=
+google.golang.org/protobuf v1.20.1-0.20200309200217-e05f789c0967/go.mod h1:A+miEFZTKqfCUM6K7xSMQL9OKL/b6hQv+e19PK+JZNE=
+google.golang.org/protobuf v1.21.0/go.mod h1:47Nbq4nVaFHyn7ilMalzfO3qCViNmqZ2kzikPIcrTAo=
+google.golang.org/protobuf v1.23.0 h1:4MY060fB1DLGMB/7MBTLnwQUY6+F09GEiz6SsrNqyzM=
+google.golang.org/protobuf v1.23.0/go.mod h1:EGpADcykh3NcUnDUJcl1+ZksZNG86OlYog2l/sGQquU=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127 h1:qIbj1fsPNlZgppZ+VLlY7N33q108Sa+fhmuc+sWQYwY=
 gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=

vendor/github.com/golang/protobuf/proto/buffer.go

@@ -0,0 +1,324 @@
+// Copyright 2019 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package proto
+
+import (
+	"errors"
+	"fmt"
+
+	"google.golang.org/protobuf/encoding/prototext"
+	"google.golang.org/protobuf/encoding/protowire"
+	"google.golang.org/protobuf/runtime/protoimpl"
+)
+
+const (
+	WireVarint     = 0
+	WireFixed32    = 5
+	WireFixed64    = 1
+	WireBytes      = 2
+	WireStartGroup = 3
+	WireEndGroup   = 4
+)
+
+// EncodeVarint returns the varint encoded bytes of v.
+func EncodeVarint(v uint64) []byte {
+	return protowire.AppendVarint(nil, v)
+}
+
+// SizeVarint returns the length of the varint encoded bytes of v.
+// This is equal to len(EncodeVarint(v)).
+func SizeVarint(v uint64) int {
+	return protowire.SizeVarint(v)
+}
+
+// DecodeVarint parses a varint encoded integer from b,
+// returning the integer value and the length of the varint.
+// It returns (0, 0) if there is a parse error.
+func DecodeVarint(b []byte) (uint64, int) {
+	v, n := protowire.ConsumeVarint(b)
+	if n < 0 {
+		return 0, 0
+	}
+	return v, n
+}
+
+// Buffer is a buffer for encoding and decoding the protobuf wire format.
+// It may be reused between invocations to reduce memory usage.
+type Buffer struct {
+	buf           []byte
+	idx           int
+	deterministic bool
+}
+
+// NewBuffer allocates a new Buffer initialized with buf,
+// where the contents of buf are considered the unread portion of the buffer.
+func NewBuffer(buf []byte) *Buffer {
+	return &Buffer{buf: buf}
+}
+
+// SetDeterministic specifies whether to use deterministic serialization.
+//
+// Deterministic serialization guarantees that for a given binary, equal
+// messages will always be serialized to the same bytes. This implies:
+//
+//   - Repeated serialization of a message will return the same bytes.
+//   - Different processes of the same binary (which may be executing on
+//     different machines) will serialize equal messages to the same bytes.
+//
+// Note that the deterministic serialization is NOT canonical across
+// languages. It is not guaranteed to remain stable over time. It is unstable
+// across different builds with schema changes due to unknown fields.
+// Users who need canonical serialization (e.g., persistent storage in a
+// canonical form, fingerprinting, etc.) should define their own
+// canonicalization specification and implement their own serializer rather
+// than relying on this API.
+//
+// If deterministic serialization is requested, map entries will be sorted
+// by keys in lexographical order. This is an implementation detail and
+// subject to change.
+func (b *Buffer) SetDeterministic(deterministic bool) {
+	b.deterministic = deterministic
+}
+
+// SetBuf sets buf as the internal buffer,
+// where the contents of buf are considered the unread portion of the buffer.
+func (b *Buffer) SetBuf(buf []byte) {
+	b.buf = buf
+	b.idx = 0
+}
+
+// Reset clears the internal buffer of all written and unread data.
+func (b *Buffer) Reset() {
+	b.buf = b.buf[:0]
+	b.idx = 0
+}
+
+// Bytes returns the internal buffer.
+func (b *Buffer) Bytes() []byte {
+	return b.buf
+}
+
+// Unread returns the unread portion of the buffer.
+func (b *Buffer) Unread() []byte {
+	return b.buf[b.idx:]
+}
+
+// Marshal appends the wire-format encoding of m to the buffer.
+func (b *Buffer) Marshal(m Message) error {
+	var err error
+	b.buf, err = marshalAppend(b.buf, m, b.deterministic)
+	return err
+}
+
+// Unmarshal parses the wire-format message in the buffer and
+// places the decoded results in m.
+// It does not reset m before unmarshaling.
+func (b *Buffer) Unmarshal(m Message) error {
+	err := UnmarshalMerge(b.Unread(), m)
+	b.idx = len(b.buf)
+	return err
+}
+
+type unknownFields struct{ XXX_unrecognized protoimpl.UnknownFields }
+
+func (m *unknownFields) String() string { panic("not implemented") }
+func (m *unknownFields) Reset()         { panic("not implemented") }
+func (m *unknownFields) ProtoMessage()  { panic("not implemented") }
+
+// DebugPrint dumps the encoded bytes of b with a header and footer including s
+// to stdout. This is only intended for debugging.
+func (*Buffer) DebugPrint(s string, b []byte) {
+	m := MessageReflect(new(unknownFields))
+	m.SetUnknown(b)
+	b, _ = prototext.MarshalOptions{AllowPartial: true, Indent: "\t"}.Marshal(m.Interface())
+	fmt.Printf("==== %s ====\n%s==== %s ====\n", s, b, s)
+}
+
+// EncodeVarint appends an unsigned varint encoding to the buffer.
+func (b *Buffer) EncodeVarint(v uint64) error {
+	b.buf = protowire.AppendVarint(b.buf, v)
+	return nil
+}
+
+// EncodeZigzag32 appends a 32-bit zig-zag varint encoding to the buffer.
+func (b *Buffer) EncodeZigzag32(v uint64) error {
+	return b.EncodeVarint(uint64((uint32(v) << 1) ^ uint32((int32(v) >> 31))))
+}
+
+// EncodeZigzag64 appends a 64-bit zig-zag varint encoding to the buffer.
+func (b *Buffer) EncodeZigzag64(v uint64) error {
+	return b.EncodeVarint(uint64((uint64(v) << 1) ^ uint64((int64(v) >> 63))))
+}
+
+// EncodeFixed32 appends a 32-bit little-endian integer to the buffer.
+func (b *Buffer) EncodeFixed32(v uint64) error {
+	b.buf = protowire.AppendFixed32(b.buf, uint32(v))
+	return nil
+}
+
+// EncodeFixed64 appends a 64-bit little-endian integer to the buffer.
+func (b *Buffer) EncodeFixed64(v uint64) error {
+	b.buf = protowire.AppendFixed64(b.buf, uint64(v))
+	return nil
+}
+
+// EncodeRawBytes appends a length-prefixed raw bytes to the buffer.
+func (b *Buffer) EncodeRawBytes(v []byte) error {
+	b.buf = protowire.AppendBytes(b.buf, v)
+	return nil
+}
+
+// EncodeStringBytes appends a length-prefixed raw bytes to the buffer.
+// It does not validate whether v contains valid UTF-8.
+func (b *Buffer) EncodeStringBytes(v string) error {
+	b.buf = protowire.AppendString(b.buf, v)
+	return nil
+}
+
+// EncodeMessage appends a length-prefixed encoded message to the buffer.
+func (b *Buffer) EncodeMessage(m Message) error {
+	var err error
+	b.buf = protowire.AppendVarint(b.buf, uint64(Size(m)))
+	b.buf, err = marshalAppend(b.buf, m, b.deterministic)
+	return err
+}
+
+// DecodeVarint consumes an encoded unsigned varint from the buffer.
+func (b *Buffer) DecodeVarint() (uint64, error) {
+	v, n := protowire.ConsumeVarint(b.buf[b.idx:])
+	if n < 0 {
+		return 0, protowire.ParseError(n)
+	}
+	b.idx += n
+	return uint64(v), nil
+}
+
+// DecodeZigzag32 consumes an encoded 32-bit zig-zag varint from the buffer.
+func (b *Buffer) DecodeZigzag32() (uint64, error) {
+	v, err := b.DecodeVarint()
+	if err != nil {
+		return 0, err
+	}
+	return uint64((uint32(v) >> 1) ^ uint32((int32(v&1)<<31)>>31)), nil
+}
+
+// DecodeZigzag64 consumes an encoded 64-bit zig-zag varint from the buffer.
+func (b *Buffer) DecodeZigzag64() (uint64, error) {
+	v, err := b.DecodeVarint()
+	if err != nil {
+		return 0, err
+	}
+	return uint64((uint64(v) >> 1) ^ uint64((int64(v&1)<<63)>>63)), nil
+}
+
+// DecodeFixed32 consumes a 32-bit little-endian integer from the buffer.
+func (b *Buffer) DecodeFixed32() (uint64, error) {
+	v, n := protowire.ConsumeFixed32(b.buf[b.idx:])
+	if n < 0 {
+		return 0, protowire.ParseError(n)
+	}
+	b.idx += n
+	return uint64(v), nil
+}
+
+// DecodeFixed64 consumes a 64-bit little-endian integer from the buffer.
+func (b *Buffer) DecodeFixed64() (uint64, error) {
+	v, n := protowire.ConsumeFixed64(b.buf[b.idx:])
+	if n < 0 {
+		return 0, protowire.ParseError(n)
+	}
+	b.idx += n
+	return uint64(v), nil
+}
+
+// DecodeRawBytes consumes a length-prefixed raw bytes from the buffer.
+// If alloc is specified, it returns a copy the raw bytes
+// rather than a sub-slice of the buffer.
+func (b *Buffer) DecodeRawBytes(alloc bool) ([]byte, error) {
+	v, n := protowire.ConsumeBytes(b.buf[b.idx:])
+	if n < 0 {
+		return nil, protowire.ParseError(n)
+	}
+	b.idx += n
+	if alloc {
+		v = append([]byte(nil), v...)
+	}
+	return v, nil
+}
+
+// DecodeStringBytes consumes a length-prefixed raw bytes from the buffer.
+// It does not validate whether the raw bytes contain valid UTF-8.
+func (b *Buffer) DecodeStringBytes() (string, error) {
+	v, n := protowire.ConsumeString(b.buf[b.idx:])
+	if n < 0 {
+		return "", protowire.ParseError(n)
+	}
+	b.idx += n
+	return v, nil
+}
+
+// DecodeMessage consumes a length-prefixed message from the buffer.
+// It does not reset m before unmarshaling.
+func (b *Buffer) DecodeMessage(m Message) error {
+	v, err := b.DecodeRawBytes(false)
+	if err != nil {
+		return err
+	}
+	return UnmarshalMerge(v, m)
+}
+
+// DecodeGroup consumes a message group from the buffer.
+// It assumes that the start group marker has already been consumed and
+// consumes all bytes until (and including the end group marker).
+// It does not reset m before unmarshaling.
+func (b *Buffer) DecodeGroup(m Message) error {
+	v, n, err := consumeGroup(b.buf[b.idx:])
+	if err != nil {
+		return err
+	}
+	b.idx += n
+	return UnmarshalMerge(v, m)
+}
+
+// consumeGroup parses b until it finds an end group marker, returning
+// the raw bytes of the message (excluding the end group marker) and the
+// the total length of the message (including the end group marker).
+func consumeGroup(b []byte) ([]byte, int, error) {
+	b0 := b
+	depth := 1 // assume this follows a start group marker
+	for {
+		_, wtyp, tagLen := protowire.ConsumeTag(b)
+		if tagLen < 0 {
+			return nil, 0, protowire.ParseError(tagLen)
+		}
+		b = b[tagLen:]
+
+		var valLen int
+		switch wtyp {
+		case protowire.VarintType:
+			_, valLen = protowire.ConsumeVarint(b)
+		case protowire.Fixed32Type:
+			_, valLen = protowire.ConsumeFixed32(b)
+		case protowire.Fixed64Type:
+			_, valLen = protowire.ConsumeFixed64(b)
+		case protowire.BytesType:
+			_, valLen = protowire.ConsumeBytes(b)
+		case protowire.StartGroupType:
+			depth++
+		case protowire.EndGroupType:
+			depth--
+		default:
+			return nil, 0, errors.New("proto: cannot parse reserved wire type")
+		}
+		if valLen < 0 {
+			return nil, 0, protowire.ParseError(valLen)
+		}
+		b = b[valLen:]
+
+		if depth == 0 {
+			return b0[:len(b0)-len(b)-tagLen], len(b0) - len(b), nil
+		}
+	}
+}

vendor/github.com/golang/protobuf/proto/clone.go

@@ -1,253 +0,0 @@
-// Go support for Protocol Buffers - Google's data interchange format
-//
-// Copyright 2011 The Go Authors.  All rights reserved.
-// https://github.com/golang/protobuf
-//
-// Redistribution and use in source and binary forms, with or without
-// modification, are permitted provided that the following conditions are
-// met:
-//
-//     * Redistributions of source code must retain the above copyright
-// notice, this list of conditions and the following disclaimer.
-//     * Redistributions in binary form must reproduce the above
-// copyright notice, this list of conditions and the following disclaimer
-// in the documentation and/or other materials provided with the
-// distribution.
-//     * Neither the name of Google Inc. nor the names of its
-// contributors may be used to endorse or promote products derived from
-// this software without specific prior written permission.
-//
-// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-// Protocol buffer deep copy and merge.
-// TODO: RawMessage.
-
-package proto
-
-import (
-	"fmt"
-	"log"
-	"reflect"
-	"strings"
-)
-
-// Clone returns a deep copy of a protocol buffer.
-func Clone(src Message) Message {
-	in := reflect.ValueOf(src)
-	if in.IsNil() {
-		return src
-	}
-	out := reflect.New(in.Type().Elem())
-	dst := out.Interface().(Message)
-	Merge(dst, src)
-	return dst
-}
-
-// Merger is the interface representing objects that can merge messages of the same type.
-type Merger interface {
-	// Merge merges src into this message.
-	// Required and optional fields that are set in src will be set to that value in dst.
-	// Elements of repeated fields will be appended.
-	//
-	// Merge may panic if called with a different argument type than the receiver.
-	Merge(src Message)
-}
-
-// generatedMerger is the custom merge method that generated protos will have.
-// We must add this method since a generate Merge method will conflict with
-// many existing protos that have a Merge data field already defined.
-type generatedMerger interface {
-	XXX_Merge(src Message)
-}
-
-// Merge merges src into dst.
-// Required and optional fields that are set in src will be set to that value in dst.
-// Elements of repeated fields will be appended.
-// Merge panics if src and dst are not the same type, or if dst is nil.
-func Merge(dst, src Message) {
-	if m, ok := dst.(Merger); ok {
-		m.Merge(src)
-		return
-	}
-
-	in := reflect.ValueOf(src)
-	out := reflect.ValueOf(dst)
-	if out.IsNil() {
-		panic("proto: nil destination")
-	}
-	if in.Type() != out.Type() {
-		panic(fmt.Sprintf("proto.Merge(%T, %T) type mismatch", dst, src))
-	}
-	if in.IsNil() {
-		return // Merge from nil src is a noop
-	}
-	if m, ok := dst.(generatedMerger); ok {
-		m.XXX_Merge(src)
-		return
-	}
-	mergeStruct(out.Elem(), in.Elem())
-}
-
-func mergeStruct(out, in reflect.Value) {
-	sprop := GetProperties(in.Type())
-	for i := 0; i < in.NumField(); i++ {
-		f := in.Type().Field(i)
-		if strings.HasPrefix(f.Name, "XXX_") {
-			continue
-		}
-		mergeAny(out.Field(i), in.Field(i), false, sprop.Prop[i])
-	}
-
-	if emIn, err := extendable(in.Addr().Interface()); err == nil {
-		emOut, _ := extendable(out.Addr().Interface())
-		mIn, muIn := emIn.extensionsRead()
-		if mIn != nil {
-			mOut := emOut.extensionsWrite()
-			muIn.Lock()
-			mergeExtension(mOut, mIn)
-			muIn.Unlock()
-		}
-	}
-
-	uf := in.FieldByName("XXX_unrecognized")
-	if !uf.IsValid() {
-		return
-	}
-	uin := uf.Bytes()
-	if len(uin) > 0 {
-		out.FieldByName("XXX_unrecognized").SetBytes(append([]byte(nil), uin...))
-	}
-}
-
-// mergeAny performs a merge between two values of the same type.
-// viaPtr indicates whether the values were indirected through a pointer (implying proto2).
-// prop is set if this is a struct field (it may be nil).
-func mergeAny(out, in reflect.Value, viaPtr bool, prop *Properties) {
-	if in.Type() == protoMessageType {
-		if !in.IsNil() {
-			if out.IsNil() {
-				out.Set(reflect.ValueOf(Clone(in.Interface().(Message))))
-			} else {
-				Merge(out.Interface().(Message), in.Interface().(Message))
-			}
-		}
-		return
-	}
-	switch in.Kind() {
-	case reflect.Bool, reflect.Float32, reflect.Float64, reflect.Int32, reflect.Int64,
-		reflect.String, reflect.Uint32, reflect.Uint64:
-		if !viaPtr && isProto3Zero(in) {
-			return
-		}
-		out.Set(in)
-	case reflect.Interface:
-		// Probably a oneof field; copy non-nil values.
-		if in.IsNil() {
-			return
-		}
-		// Allocate destination if it is not set, or set to a different type.
-		// Otherwise we will merge as normal.
-		if out.IsNil() || out.Elem().Type() != in.Elem().Type() {
-			out.Set(reflect.New(in.Elem().Elem().Type())) // interface -> *T -> T -> new(T)
-		}
-		mergeAny(out.Elem(), in.Elem(), false, nil)
-	case reflect.Map:
-		if in.Len() == 0 {
-			return
-		}
-		if out.IsNil() {
-			out.Set(reflect.MakeMap(in.Type()))
-		}
-		// For maps with value types of *T or []byte we need to deep copy each value.
-		elemKind := in.Type().Elem().Kind()
-		for _, key := range in.MapKeys() {
-			var val reflect.Value
-			switch elemKind {
-			case reflect.Ptr:
-				val = reflect.New(in.Type().Elem().Elem())
-				mergeAny(val, in.MapIndex(key), false, nil)
-			case reflect.Slice:
-				val = in.MapIndex(key)
-				val = reflect.ValueOf(append([]byte{}, val.Bytes()...))
-			default:
-				val = in.MapIndex(key)
-			}
-			out.SetMapIndex(key, val)
-		}
-	case reflect.Ptr:
-		if in.IsNil() {
-			return
-		}
-		if out.IsNil() {
-			out.Set(reflect.New(in.Elem().Type()))
-		}
-		mergeAny(out.Elem(), in.Elem(), true, nil)
-	case reflect.Slice:
-		if in.IsNil() {
-			return
-		}
-		if in.Type().Elem().Kind() == reflect.Uint8 {
-			// []byte is a scalar bytes field, not a repeated field.
-
-			// Edge case: if this is in a proto3 message, a zero length
-			// bytes field is considered the zero value, and should not
-			// be merged.
-			if prop != nil && prop.proto3 && in.Len() == 0 {
-				return
-			}
-
-			// Make a deep copy.
-			// Append to []byte{} instead of []byte(nil) so that we never end up
-			// with a nil result.
-			out.SetBytes(append([]byte{}, in.Bytes()...))
-			return
-		}
-		n := in.Len()
-		if out.IsNil() {
-			out.Set(reflect.MakeSlice(in.Type(), 0, n))
-		}
-		switch in.Type().Elem().Kind() {
-		case reflect.Bool, reflect.Float32, reflect.Float64, reflect.Int32, reflect.Int64,
-			reflect.String, reflect.Uint32, reflect.Uint64:
-			out.Set(reflect.AppendSlice(out, in))
-		default:
-			for i := 0; i < n; i++ {
-				x := reflect.Indirect(reflect.New(in.Type().Elem()))
-				mergeAny(x, in.Index(i), false, nil)
-				out.Set(reflect.Append(out, x))
-			}
-		}
-	case reflect.Struct:
-		mergeStruct(out, in)
-	default:
-		// unknown type, so not a protocol buffer
-		log.Printf("proto: don't know how to copy %v", in)
-	}
-}
-
-func mergeExtension(out, in map[int32]Extension) {
-	for extNum, eIn := range in {
-		eOut := Extension{desc: eIn.desc}
-		if eIn.value != nil {
-			v := reflect.New(reflect.TypeOf(eIn.value)).Elem()
-			mergeAny(v, reflect.ValueOf(eIn.value), false, nil)
-			eOut.value = v.Interface()
-		}
-		if eIn.enc != nil {
-			eOut.enc = make([]byte, len(eIn.enc))
-			copy(eOut.enc, eIn.enc)
-		}
-
-		out[extNum] = eOut
-	}
-}

vendor/github.com/golang/protobuf/proto/decode.go

@@ -1,427 +0,0 @@
-// Go support for Protocol Buffers - Google's data interchange format
-//
-// Copyright 2010 The Go Authors.  All rights reserved.
-// https://github.com/golang/protobuf
-//
-// Redistribution and use in source and binary forms, with or without
-// modification, are permitted provided that the following conditions are
-// met:
-//
-//     * Redistributions of source code must retain the above copyright
-// notice, this list of conditions and the following disclaimer.
-//     * Redistributions in binary form must reproduce the above
-// copyright notice, this list of conditions and the following disclaimer
-// in the documentation and/or other materials provided with the
-// distribution.
-//     * Neither the name of Google Inc. nor the names of its
-// contributors may be used to endorse or promote products derived from
-// this software without specific prior written permission.
-//
-// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-package proto
-
-/*
- * Routines for decoding protocol buffer data to construct in-memory representations.
- */
-
-import (
-	"errors"
-	"fmt"
-	"io"
-)
-
-// errOverflow is returned when an integer is too large to be represented.
-var errOverflow = errors.New("proto: integer overflow")
-
-// ErrInternalBadWireType is returned by generated code when an incorrect
-// wire type is encountered. It does not get returned to user code.
-var ErrInternalBadWireType = errors.New("proto: internal error: bad wiretype for oneof")
-
-// DecodeVarint reads a varint-encoded integer from the slice.
-// It returns the integer and the number of bytes consumed, or
-// zero if there is not enough.
-// This is the format for the
-// int32, int64, uint32, uint64, bool, and enum
-// protocol buffer types.
-func DecodeVarint(buf []byte) (x uint64, n int) {
-	for shift := uint(0); shift < 64; shift += 7 {
-		if n >= len(buf) {
-			return 0, 0
-		}
-		b := uint64(buf[n])
-		n++
-		x |= (b & 0x7F) << shift
-		if (b & 0x80) == 0 {
-			return x, n
-		}
-	}
-
-	// The number is too large to represent in a 64-bit value.
-	return 0, 0
-}
-
-func (p *Buffer) decodeVarintSlow() (x uint64, err error) {
-	i := p.index
-	l := len(p.buf)
-
-	for shift := uint(0); shift < 64; shift += 7 {
-		if i >= l {
-			err = io.ErrUnexpectedEOF
-			return
-		}
-		b := p.buf[i]
-		i++
-		x |= (uint64(b) & 0x7F) << shift
-		if b < 0x80 {
-			p.index = i
-			return
-		}
-	}
-
-	// The number is too large to represent in a 64-bit value.
-	err = errOverflow
-	return
-}
-
-// DecodeVarint reads a varint-encoded integer from the Buffer.
-// This is the format for the
-// int32, int64, uint32, uint64, bool, and enum
-// protocol buffer types.
-func (p *Buffer) DecodeVarint() (x uint64, err error) {
-	i := p.index
-	buf := p.buf
-
-	if i >= len(buf) {
-		return 0, io.ErrUnexpectedEOF
-	} else if buf[i] < 0x80 {
-		p.index++
-		return uint64(buf[i]), nil
-	} else if len(buf)-i < 10 {
-		return p.decodeVarintSlow()
-	}
-
-	var b uint64
-	// we already checked the first byte
-	x = uint64(buf[i]) - 0x80
-	i++
-
-	b = uint64(buf[i])
-	i++
-	x += b << 7
-	if b&0x80 == 0 {
-		goto done
-	}
-	x -= 0x80 << 7
-
-	b = uint64(buf[i])
-	i++
-	x += b << 14
-	if b&0x80 == 0 {
-		goto done
-	}
-	x -= 0x80 << 14
-
-	b = uint64(buf[i])
-	i++
-	x += b << 21
-	if b&0x80 == 0 {
-		goto done
-	}
-	x -= 0x80 << 21
-
-	b = uint64(buf[i])
-	i++
-	x += b << 28
-	if b&0x80 == 0 {
-		goto done
-	}
-	x -= 0x80 << 28
-
-	b = uint64(buf[i])
-	i++
-	x += b << 35
-	if b&0x80 == 0 {
-		goto done
-	}
-	x -= 0x80 << 35
-
-	b = uint64(buf[i])
-	i++
-	x += b << 42
-	if b&0x80 == 0 {
-		goto done
-	}
-	x -= 0x80 << 42
-
-	b = uint64(buf[i])
-	i++
-	x += b << 49
-	if b&0x80 == 0 {
-		goto done
-	}
-	x -= 0x80 << 49
-
-	b = uint64(buf[i])
-	i++
-	x += b << 56
-	if b&0x80 == 0 {
-		goto done
-	}
-	x -= 0x80 << 56
-
-	b = uint64(buf[i])
-	i++
-	x += b << 63
-	if b&0x80 == 0 {
-		goto done
-	}
-
-	return 0, errOverflow
-
-done:
-	p.index = i
-	return x, nil
-}
-
-// DecodeFixed64 reads a 64-bit integer from the Buffer.
-// This is the format for the
-// fixed64, sfixed64, and double protocol buffer types.
-func (p *Buffer) DecodeFixed64() (x uint64, err error) {
-	// x, err already 0
-	i := p.index + 8
-	if i < 0 || i > len(p.buf) {
-		err = io.ErrUnexpectedEOF
-		return
-	}
-	p.index = i
-
-	x = uint64(p.buf[i-8])
-	x |= uint64(p.buf[i-7]) << 8
-	x |= uint64(p.buf[i-6]) << 16
-	x |= uint64(p.buf[i-5]) << 24
-	x |= uint64(p.buf[i-4]) << 32
-	x |= uint64(p.buf[i-3]) << 40
-	x |= uint64(p.buf[i-2]) << 48
-	x |= uint64(p.buf[i-1]) << 56
-	return
-}
-
-// DecodeFixed32 reads a 32-bit integer from the Buffer.
-// This is the format for the
-// fixed32, sfixed32, and float protocol buffer types.
-func (p *Buffer) DecodeFixed32() (x uint64, err error) {
-	// x, err already 0
-	i := p.index + 4
-	if i < 0 || i > len(p.buf) {
-		err = io.ErrUnexpectedEOF
-		return
-	}
-	p.index = i
-
-	x = uint64(p.buf[i-4])
-	x |= uint64(p.buf[i-3]) << 8
-	x |= uint64(p.buf[i-2]) << 16
-	x |= uint64(p.buf[i-1]) << 24
-	return
-}
-
-// DecodeZigzag64 reads a zigzag-encoded 64-bit integer
-// from the Buffer.
-// This is the format used for the sint64 protocol buffer type.
-func (p *Buffer) DecodeZigzag64() (x uint64, err error) {
-	x, err = p.DecodeVarint()
-	if err != nil {
-		return
-	}
-	x = (x >> 1) ^ uint64((int64(x&1)<<63)>>63)
-	return
-}
-
-// DecodeZigzag32 reads a zigzag-encoded 32-bit integer
-// from  the Buffer.
-// This is the format used for the sint32 protocol buffer type.
-func (p *Buffer) DecodeZigzag32() (x uint64, err error) {
-	x, err = p.DecodeVarint()
-	if err != nil {
-		return
-	}
-	x = uint64((uint32(x) >> 1) ^ uint32((int32(x&1)<<31)>>31))
-	return
-}
-
-// DecodeRawBytes reads a count-delimited byte buffer from the Buffer.
-// This is the format used for the bytes protocol buffer
-// type and for embedded messages.
-func (p *Buffer) DecodeRawBytes(alloc bool) (buf []byte, err error) {
-	n, err := p.DecodeVarint()
-	if err != nil {
-		return nil, err
-	}
-
-	nb := int(n)
-	if nb < 0 {
-		return nil, fmt.Errorf("proto: bad byte length %d", nb)
-	}
-	end := p.index + nb
-	if end < p.index || end > len(p.buf) {
-		return nil, io.ErrUnexpectedEOF
-	}
-
-	if !alloc {
-		// todo: check if can get more uses of alloc=false
-		buf = p.buf[p.index:end]
-		p.index += nb
-		return
-	}
-
-	buf = make([]byte, nb)
-	copy(buf, p.buf[p.index:])
-	p.index += nb
-	return
-}
-
-// DecodeStringBytes reads an encoded string from the Buffer.
-// This is the format used for the proto2 string type.
-func (p *Buffer) DecodeStringBytes() (s string, err error) {
-	buf, err := p.DecodeRawBytes(false)
-	if err != nil {
-		return
-	}
-	return string(buf), nil
-}
-
-// Unmarshaler is the interface representing objects that can
-// unmarshal themselves.  The argument points to data that may be
-// overwritten, so implementations should not keep references to the
-// buffer.
-// Unmarshal implementations should not clear the receiver.
-// Any unmarshaled data should be merged into the receiver.
-// Callers of Unmarshal that do not want to retain existing data
-// should Reset the receiver before calling Unmarshal.
-type Unmarshaler interface {
-	Unmarshal([]byte) error
-}
-
-// newUnmarshaler is the interface representing objects that can
-// unmarshal themselves. The semantics are identical to Unmarshaler.
-//
-// This exists to support protoc-gen-go generated messages.
-// The proto package will stop type-asserting to this interface in the future.
-//
-// DO NOT DEPEND ON THIS.
-type newUnmarshaler interface {
-	XXX_Unmarshal([]byte) error
-}
-
-// Unmarshal parses the protocol buffer representation in buf and places the
-// decoded result in pb.  If the struct underlying pb does not match
-// the data in buf, the results can be unpredictable.
-//
-// Unmarshal resets pb before starting to unmarshal, so any
-// existing data in pb is always removed. Use UnmarshalMerge
-// to preserve and append to existing data.
-func Unmarshal(buf []byte, pb Message) error {
-	pb.Reset()
-	if u, ok := pb.(newUnmarshaler); ok {
-		return u.XXX_Unmarshal(buf)
-	}
-	if u, ok := pb.(Unmarshaler); ok {
-		return u.Unmarshal(buf)
-	}
-	return NewBuffer(buf).Unmarshal(pb)
-}
-
-// UnmarshalMerge parses the protocol buffer representation in buf and
-// writes the decoded result to pb.  If the struct underlying pb does not match
-// the data in buf, the results can be unpredictable.
-//
-// UnmarshalMerge merges into existing data in pb.
-// Most code should use Unmarshal instead.
-func UnmarshalMerge(buf []byte, pb Message) error {
-	if u, ok := pb.(newUnmarshaler); ok {
-		return u.XXX_Unmarshal(buf)
-	}
-	if u, ok := pb.(Unmarshaler); ok {
-		// NOTE: The history of proto have unfortunately been inconsistent
-		// whether Unmarshaler should or should not implicitly clear itself.
-		// Some implementations do, most do not.
-		// Thus, calling this here may or may not do what people want.
-		//
-		// See https://github.com/golang/protobuf/issues/424
-		return u.Unmarshal(buf)
-	}
-	return NewBuffer(buf).Unmarshal(pb)
-}
-
-// DecodeMessage reads a count-delimited message from the Buffer.
-func (p *Buffer) DecodeMessage(pb Message) error {
-	enc, err := p.DecodeRawBytes(false)
-	if err != nil {
-		return err
-	}
-	return NewBuffer(enc).Unmarshal(pb)
-}
-
-// DecodeGroup reads a tag-delimited group from the Buffer.
-// StartGroup tag is already consumed. This function consumes
-// EndGroup tag.
-func (p *Buffer) DecodeGroup(pb Message) error {
-	b := p.buf[p.index:]
-	x, y := findEndGroup(b)
-	if x < 0 {
-		return io.ErrUnexpectedEOF
-	}
-	err := Unmarshal(b[:x], pb)
-	p.index += y
-	return err
-}
-
-// Unmarshal parses the protocol buffer representation in the
-// Buffer and places the decoded result in pb.  If the struct
-// underlying pb does not match the data in the buffer, the results can be
-// unpredictable.
-//
-// Unlike proto.Unmarshal, this does not reset pb before starting to unmarshal.
-func (p *Buffer) Unmarshal(pb Message) error {
-	// If the object can unmarshal itself, let it.
-	if u, ok := pb.(newUnmarshaler); ok {
-		err := u.XXX_Unmarshal(p.buf[p.index:])
-		p.index = len(p.buf)
-		return err
-	}
-	if u, ok := pb.(Unmarshaler); ok {
-		// NOTE: The history of proto have unfortunately been inconsistent
-		// whether Unmarshaler should or should not implicitly clear itself.
-		// Some implementations do, most do not.
-		// Thus, calling this here may or may not do what people want.
-		//
-		// See https://github.com/golang/protobuf/issues/424
-		err := u.Unmarshal(p.buf[p.index:])
-		p.index = len(p.buf)
-		return err
-	}
-
-	// Slow workaround for messages that aren't Unmarshalers.
-	// This includes some hand-coded .pb.go files and
-	// bootstrap protos.
-	// TODO: fix all of those and then add Unmarshal to
-	// the Message interface. Then:
-	// The cast above and code below can be deleted.
-	// The old unmarshaler can be deleted.
-	// Clients can call Unmarshal directly (can already do that, actually).
-	var info InternalMessageInfo
-	err := info.Unmarshal(pb, p.buf[p.index:])
-	p.index = len(p.buf)
-	return err
-}

vendor/github.com/golang/protobuf/proto/defaults.go

@@ -0,0 +1,63 @@
+// Copyright 2019 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package proto
+
+import (
+	"google.golang.org/protobuf/reflect/protoreflect"
+)
+
+// SetDefaults sets unpopulated scalar fields to their default values.
+// Fields within a oneof are not set even if they have a default value.
+// SetDefaults is recursively called upon any populated message fields.
+func SetDefaults(m Message) {
+	if m != nil {
+		setDefaults(MessageReflect(m))
+	}
+}
+
+func setDefaults(m protoreflect.Message) {
+	fds := m.Descriptor().Fields()
+	for i := 0; i < fds.Len(); i++ {
+		fd := fds.Get(i)
+		if !m.Has(fd) {
+			if fd.HasDefault() && fd.ContainingOneof() == nil {
+				v := fd.Default()
+				if fd.Kind() == protoreflect.BytesKind {
+					v = protoreflect.ValueOf(append([]byte(nil), v.Bytes()...)) // copy the default bytes
+				}
+				m.Set(fd, v)
+			}
+			continue
+		}
+	}
+
+	m.Range(func(fd protoreflect.FieldDescriptor, v protoreflect.Value) bool {
+		switch {
+		// Handle singular message.
+		case fd.Cardinality() != protoreflect.Repeated:
+			if fd.Message() != nil {
+				setDefaults(m.Get(fd).Message())
+			}
+		// Handle list of messages.
+		case fd.IsList():
+			if fd.Message() != nil {
+				ls := m.Get(fd).List()
+				for i := 0; i < ls.Len(); i++ {
+					setDefaults(ls.Get(i).Message())
+				}
+			}
+		// Handle map of messages.
+		case fd.IsMap():
+			if fd.MapValue().Message() != nil {
+				ms := m.Get(fd).Map()
+				ms.Range(func(_ protoreflect.MapKey, v protoreflect.Value) bool {
+					setDefaults(v.Message())
+					return true
+				})
+			}
+		}
+		return true
+	})
+}

vendor/github.com/golang/protobuf/proto/deprecated.go

@@ -1,63 +1,113 @@
-// Go support for Protocol Buffers - Google's data interchange format
+// Copyright 2018 The Go Authors. All rights reserved.
-//
+// Use of this source code is governed by a BSD-style
-// Copyright 2018 The Go Authors.  All rights reserved.
+// license that can be found in the LICENSE file.
-// https://github.com/golang/protobuf
-//
-// Redistribution and use in source and binary forms, with or without
-// modification, are permitted provided that the following conditions are
-// met:
-//
-//     * Redistributions of source code must retain the above copyright
-// notice, this list of conditions and the following disclaimer.
-//     * Redistributions in binary form must reproduce the above
-// copyright notice, this list of conditions and the following disclaimer
-// in the documentation and/or other materials provided with the
-// distribution.
-//     * Neither the name of Google Inc. nor the names of its
-// contributors may be used to endorse or promote products derived from
-// this software without specific prior written permission.
-//
-// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 package proto
 
-import "errors"
+import (
+	"encoding/json"
+	"errors"
+	"fmt"
+	"strconv"
 
-// Deprecated: do not use.
+	protoV2 "google.golang.org/protobuf/proto"
+)
+
+var (
+	// Deprecated: No longer returned.
+	ErrNil = errors.New("proto: Marshal called with nil")
+
+	// Deprecated: No longer returned.
+	ErrTooLarge = errors.New("proto: message encodes to over 2 GB")
+
+	// Deprecated: No longer returned.
+	ErrInternalBadWireType = errors.New("proto: internal error: bad wiretype for oneof")
+)
+
+// Deprecated: Do not use.
 type Stats struct{ Emalloc, Dmalloc, Encode, Decode, Chit, Cmiss, Size uint64 }
 
-// Deprecated: do not use.
+// Deprecated: Do not use.
 func GetStats() Stats { return Stats{} }
 
-// Deprecated: do not use.
+// Deprecated: Do not use.
 func MarshalMessageSet(interface{}) ([]byte, error) {
 	return nil, errors.New("proto: not implemented")
 }
 
-// Deprecated: do not use.
+// Deprecated: Do not use.
 func UnmarshalMessageSet([]byte, interface{}) error {
 	return errors.New("proto: not implemented")
 }
 
-// Deprecated: do not use.
+// Deprecated: Do not use.
 func MarshalMessageSetJSON(interface{}) ([]byte, error) {
 	return nil, errors.New("proto: not implemented")
 }
 
-// Deprecated: do not use.
+// Deprecated: Do not use.
 func UnmarshalMessageSetJSON([]byte, interface{}) error {
 	return errors.New("proto: not implemented")
 }
 
-// Deprecated: do not use.
+// Deprecated: Do not use.
 func RegisterMessageSetType(Message, int32, string) {}
+
+// Deprecated: Do not use.
+func EnumName(m map[int32]string, v int32) string {
+	s, ok := m[v]
+	if ok {
+		return s
+	}
+	return strconv.Itoa(int(v))
+}
+
+// Deprecated: Do not use.
+func UnmarshalJSONEnum(m map[string]int32, data []byte, enumName string) (int32, error) {
+	if data[0] == '"' {
+		// New style: enums are strings.
+		var repr string
+		if err := json.Unmarshal(data, &repr); err != nil {
+			return -1, err
+		}
+		val, ok := m[repr]
+		if !ok {
+			return 0, fmt.Errorf("unrecognized enum %s value %q", enumName, repr)
+		}
+		return val, nil
+	}
+	// Old style: enums are ints.
+	var val int32
+	if err := json.Unmarshal(data, &val); err != nil {
+		return 0, fmt.Errorf("cannot unmarshal %#q into enum %s", data, enumName)
+	}
+	return val, nil
+}
+
+// Deprecated: Do not use; this type existed for intenal-use only.
+type InternalMessageInfo struct{}
+
+// Deprecated: Do not use; this method existed for intenal-use only.
+func (*InternalMessageInfo) DiscardUnknown(m Message) {
+	DiscardUnknown(m)
+}
+
+// Deprecated: Do not use; this method existed for intenal-use only.
+func (*InternalMessageInfo) Marshal(b []byte, m Message, deterministic bool) ([]byte, error) {
+	return protoV2.MarshalOptions{Deterministic: deterministic}.MarshalAppend(b, MessageV2(m))
+}
+
+// Deprecated: Do not use; this method existed for intenal-use only.
+func (*InternalMessageInfo) Merge(dst, src Message) {
+	protoV2.Merge(MessageV2(dst), MessageV2(src))
+}
+
+// Deprecated: Do not use; this method existed for intenal-use only.
+func (*InternalMessageInfo) Size(m Message) int {
+	return protoV2.Size(MessageV2(m))
+}
+
+// Deprecated: Do not use; this method existed for intenal-use only.
+func (*InternalMessageInfo) Unmarshal(m Message, b []byte) error {
+	return protoV2.UnmarshalOptions{Merge: true}.Unmarshal(b, MessageV2(m))
+}

vendor/github.com/golang/protobuf/proto/discard.go

@@ -1,48 +1,13 @@
-// Go support for Protocol Buffers - Google's data interchange format
+// Copyright 2019 The Go Authors. All rights reserved.
-//
+// Use of this source code is governed by a BSD-style
-// Copyright 2017 The Go Authors.  All rights reserved.
+// license that can be found in the LICENSE file.
-// https://github.com/golang/protobuf
-//
-// Redistribution and use in source and binary forms, with or without
-// modification, are permitted provided that the following conditions are
-// met:
-//
-//     * Redistributions of source code must retain the above copyright
-// notice, this list of conditions and the following disclaimer.
-//     * Redistributions in binary form must reproduce the above
-// copyright notice, this list of conditions and the following disclaimer
-// in the documentation and/or other materials provided with the
-// distribution.
-//     * Neither the name of Google Inc. nor the names of its
-// contributors may be used to endorse or promote products derived from
-// this software without specific prior written permission.
-//
-// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 package proto
 
 import (
-	"fmt"
+	"google.golang.org/protobuf/reflect/protoreflect"
-	"reflect"
-	"strings"
-	"sync"
-	"sync/atomic"
 )
 
-type generatedDiscarder interface {
-	XXX_DiscardUnknown()
-}
-
 // DiscardUnknown recursively discards all unknown fields from this message
 // and all embedded messages.
 //
@@ -51,300 +16,43 @@ type generatedDiscarder interface {
 // marshal to be able to produce a message that continues to have those
 // unrecognized fields. To avoid this, DiscardUnknown is used to
 // explicitly clear the unknown fields after unmarshaling.
-//
-// For proto2 messages, the unknown fields of message extensions are only
-// discarded from messages that have been accessed via GetExtension.
 func DiscardUnknown(m Message) {
-	if m, ok := m.(generatedDiscarder); ok {
+	if m != nil {
-		m.XXX_DiscardUnknown()
+		discardUnknown(MessageReflect(m))
-		return
 	}
-	// TODO: Dynamically populate a InternalMessageInfo for legacy messages,
-	// but the master branch has no implementation for InternalMessageInfo,
-	// so it would be more work to replicate that approach.
-	discardLegacy(m)
 }
 
-// DiscardUnknown recursively discards all unknown fields.
+func discardUnknown(m protoreflect.Message) {
-func (a *InternalMessageInfo) DiscardUnknown(m Message) {
+	m.Range(func(fd protoreflect.FieldDescriptor, val protoreflect.Value) bool {
-	di := atomicLoadDiscardInfo(&a.discard)
+		switch {
-	if di == nil {
+		// Handle singular message.
-		di = getDiscardInfo(reflect.TypeOf(m).Elem())
+		case fd.Cardinality() != protoreflect.Repeated:
-		atomicStoreDiscardInfo(&a.discard, di)
+			if fd.Message() != nil {
-	}
+				discardUnknown(m.Get(fd).Message())
-	di.discard(toPointer(&m))
-}
-
-type discardInfo struct {
-	typ reflect.Type
-
-	initialized int32 // 0: only typ is valid, 1: everything is valid
-	lock        sync.Mutex
-
-	fields       []discardFieldInfo
-	unrecognized field
-}
-
-type discardFieldInfo struct {
-	field   field // Offset of field, guaranteed to be valid
-	discard func(src pointer)
-}
-
-var (
-	discardInfoMap  = map[reflect.Type]*discardInfo{}
-	discardInfoLock sync.Mutex
-)
-
-func getDiscardInfo(t reflect.Type) *discardInfo {
-	discardInfoLock.Lock()
-	defer discardInfoLock.Unlock()
-	di := discardInfoMap[t]
-	if di == nil {
-		di = &discardInfo{typ: t}
-		discardInfoMap[t] = di
-	}
-	return di
-}
-
-func (di *discardInfo) discard(src pointer) {
-	if src.isNil() {
-		return // Nothing to do.
-	}
-
-	if atomic.LoadInt32(&di.initialized) == 0 {
-		di.computeDiscardInfo()
-	}
-
-	for _, fi := range di.fields {
-		sfp := src.offset(fi.field)
-		fi.discard(sfp)
-	}
-
-	// For proto2 messages, only discard unknown fields in message extensions
-	// that have been accessed via GetExtension.
-	if em, err := extendable(src.asPointerTo(di.typ).Interface()); err == nil {
-		// Ignore lock since DiscardUnknown is not concurrency safe.
-		emm, _ := em.extensionsRead()
-		for _, mx := range emm {
-			if m, ok := mx.value.(Message); ok {
-				DiscardUnknown(m)
 			}
-		}
+		// Handle list of messages.
-	}
+		case fd.IsList():
-
+			if fd.Message() != nil {
-	if di.unrecognized.IsValid() {
+				ls := m.Get(fd).List()
-		*src.offset(di.unrecognized).toBytes() = nil
+				for i := 0; i < ls.Len(); i++ {
-	}
+					discardUnknown(ls.Get(i).Message())
-}
-
-func (di *discardInfo) computeDiscardInfo() {
-	di.lock.Lock()
-	defer di.lock.Unlock()
-	if di.initialized != 0 {
-		return
-	}
-	t := di.typ
-	n := t.NumField()
-
-	for i := 0; i < n; i++ {
-		f := t.Field(i)
-		if strings.HasPrefix(f.Name, "XXX_") {
-			continue
-		}
-
-		dfi := discardFieldInfo{field: toField(&f)}
-		tf := f.Type
-
-		// Unwrap tf to get its most basic type.
-		var isPointer, isSlice bool
-		if tf.Kind() == reflect.Slice && tf.Elem().Kind() != reflect.Uint8 {
-			isSlice = true
-			tf = tf.Elem()
-		}
-		if tf.Kind() == reflect.Ptr {
-			isPointer = true
-			tf = tf.Elem()
-		}
-		if isPointer && isSlice && tf.Kind() != reflect.Struct {
-			panic(fmt.Sprintf("%v.%s cannot be a slice of pointers to primitive types", t, f.Name))
-		}
-
-		switch tf.Kind() {
-		case reflect.Struct:
-			switch {
-			case !isPointer:
-				panic(fmt.Sprintf("%v.%s cannot be a direct struct value", t, f.Name))
-			case isSlice: // E.g., []*pb.T
-				di := getDiscardInfo(tf)
-				dfi.discard = func(src pointer) {
-					sps := src.getPointerSlice()
-					for _, sp := range sps {
-						if !sp.isNil() {
-							di.discard(sp)
-						}
-					}
-				}
-			default: // E.g., *pb.T
-				di := getDiscardInfo(tf)
-				dfi.discard = func(src pointer) {
-					sp := src.getPointer()
-					if !sp.isNil() {
-						di.discard(sp)
-					}
 				}
 			}
-		case reflect.Map:
+		// Handle map of messages.
-			switch {
+		case fd.IsMap():
-			case isPointer || isSlice:
+			if fd.MapValue().Message() != nil {
-				panic(fmt.Sprintf("%v.%s cannot be a pointer to a map or a slice of map values", t, f.Name))
+				ms := m.Get(fd).Map()
-			default: // E.g., map[K]V
+				ms.Range(func(_ protoreflect.MapKey, v protoreflect.Value) bool {
-				if tf.Elem().Kind() == reflect.Ptr { // Proto struct (e.g., *T)
+					discardUnknown(v.Message())
-					dfi.discard = func(src pointer) {
+					return true
-						sm := src.asPointerTo(tf).Elem()
+				})
-						if sm.Len() == 0 {
-							return
-						}
-						for _, key := range sm.MapKeys() {
-							val := sm.MapIndex(key)
-							DiscardUnknown(val.Interface().(Message))
-						}
-					}
-				} else {
-					dfi.discard = func(pointer) {} // Noop
-				}
-			}
-		case reflect.Interface:
-			// Must be oneof field.
-			switch {
-			case isPointer || isSlice:
-				panic(fmt.Sprintf("%v.%s cannot be a pointer to a interface or a slice of interface values", t, f.Name))
-			default: // E.g., interface{}
-				// TODO: Make this faster?
-				dfi.discard = func(src pointer) {
-					su := src.asPointerTo(tf).Elem()
-					if !su.IsNil() {
-						sv := su.Elem().Elem().Field(0)
-						if sv.Kind() == reflect.Ptr && sv.IsNil() {
-							return
-						}
-						switch sv.Type().Kind() {
-						case reflect.Ptr: // Proto struct (e.g., *T)
-							DiscardUnknown(sv.Interface().(Message))
-						}
-					}
-				}
-			}
-		default:
-			continue
-		}
-		di.fields = append(di.fields, dfi)
-	}
-
-	di.unrecognized = invalidField
-	if f, ok := t.FieldByName("XXX_unrecognized"); ok {
-		if f.Type != reflect.TypeOf([]byte{}) {
-			panic("expected XXX_unrecognized to be of type []byte")
-		}
-		di.unrecognized = toField(&f)
-	}
-
-	atomic.StoreInt32(&di.initialized, 1)
-}
-
-func discardLegacy(m Message) {
-	v := reflect.ValueOf(m)
-	if v.Kind() != reflect.Ptr || v.IsNil() {
-		return
-	}
-	v = v.Elem()
-	if v.Kind() != reflect.Struct {
-		return
-	}
-	t := v.Type()
-
-	for i := 0; i < v.NumField(); i++ {
-		f := t.Field(i)
-		if strings.HasPrefix(f.Name, "XXX_") {
-			continue
-		}
-		vf := v.Field(i)
-		tf := f.Type
-
-		// Unwrap tf to get its most basic type.
-		var isPointer, isSlice bool
-		if tf.Kind() == reflect.Slice && tf.Elem().Kind() != reflect.Uint8 {
-			isSlice = true
-			tf = tf.Elem()
-		}
-		if tf.Kind() == reflect.Ptr {
-			isPointer = true
-			tf = tf.Elem()
-		}
-		if isPointer && isSlice && tf.Kind() != reflect.Struct {
-			panic(fmt.Sprintf("%T.%s cannot be a slice of pointers to primitive types", m, f.Name))
-		}
-
-		switch tf.Kind() {
-		case reflect.Struct:
-			switch {
-			case !isPointer:
-				panic(fmt.Sprintf("%T.%s cannot be a direct struct value", m, f.Name))
-			case isSlice: // E.g., []*pb.T
-				for j := 0; j < vf.Len(); j++ {
-					discardLegacy(vf.Index(j).Interface().(Message))
-				}
-			default: // E.g., *pb.T
-				discardLegacy(vf.Interface().(Message))
-			}
-		case reflect.Map:
-			switch {
-			case isPointer || isSlice:
-				panic(fmt.Sprintf("%T.%s cannot be a pointer to a map or a slice of map values", m, f.Name))
-			default: // E.g., map[K]V
-				tv := vf.Type().Elem()
-				if tv.Kind() == reflect.Ptr && tv.Implements(protoMessageType) { // Proto struct (e.g., *T)
-					for _, key := range vf.MapKeys() {
-						val := vf.MapIndex(key)
-						discardLegacy(val.Interface().(Message))
-					}
-				}
-			}
-		case reflect.Interface:
-			// Must be oneof field.
-			switch {
-			case isPointer || isSlice:
-				panic(fmt.Sprintf("%T.%s cannot be a pointer to a interface or a slice of interface values", m, f.Name))
-			default: // E.g., test_proto.isCommunique_Union interface
-				if !vf.IsNil() && f.Tag.Get("protobuf_oneof") != "" {
-					vf = vf.Elem() // E.g., *test_proto.Communique_Msg
-					if !vf.IsNil() {
-						vf = vf.Elem()   // E.g., test_proto.Communique_Msg
-						vf = vf.Field(0) // E.g., Proto struct (e.g., *T) or primitive value
-						if vf.Kind() == reflect.Ptr {
-							discardLegacy(vf.Interface().(Message))
-						}
-					}
-				}
 			}
 		}
-	}
+		return true
+	})
 
-	if vf := v.FieldByName("XXX_unrecognized"); vf.IsValid() {
+	// Discard unknown fields.
-		if vf.Type() != reflect.TypeOf([]byte{}) {
+	if len(m.GetUnknown()) > 0 {
-			panic("expected XXX_unrecognized to be of type []byte")
+		m.SetUnknown(nil)
-		}
-		vf.Set(reflect.ValueOf([]byte(nil)))
-	}
-
-	// For proto2 messages, only discard unknown fields in message extensions
-	// that have been accessed via GetExtension.
-	if em, err := extendable(m); err == nil {
-		// Ignore lock since discardLegacy is not concurrency safe.
-		emm, _ := em.extensionsRead()
-		for _, mx := range emm {
-			if m, ok := mx.value.(Message); ok {
-				discardLegacy(m)
-			}
-		}
 	}
 }

vendor/github.com/golang/protobuf/proto/encode.go

@@ -1,203 +0,0 @@
-// Go support for Protocol Buffers - Google's data interchange format
-//
-// Copyright 2010 The Go Authors.  All rights reserved.
-// https://github.com/golang/protobuf
-//
-// Redistribution and use in source and binary forms, with or without
-// modification, are permitted provided that the following conditions are
-// met:
-//
-//     * Redistributions of source code must retain the above copyright
-// notice, this list of conditions and the following disclaimer.
-//     * Redistributions in binary form must reproduce the above
-// copyright notice, this list of conditions and the following disclaimer
-// in the documentation and/or other materials provided with the
-// distribution.
-//     * Neither the name of Google Inc. nor the names of its
-// contributors may be used to endorse or promote products derived from
-// this software without specific prior written permission.
-//
-// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-package proto
-
-/*
- * Routines for encoding data into the wire format for protocol buffers.
- */
-
-import (
-	"errors"
-	"reflect"
-)
-
-var (
-	// errRepeatedHasNil is the error returned if Marshal is called with
-	// a struct with a repeated field containing a nil element.
-	errRepeatedHasNil = errors.New("proto: repeated field has nil element")
-
-	// errOneofHasNil is the error returned if Marshal is called with
-	// a struct with a oneof field containing a nil element.
-	errOneofHasNil = errors.New("proto: oneof field has nil value")
-
-	// ErrNil is the error returned if Marshal is called with nil.
-	ErrNil = errors.New("proto: Marshal called with nil")
-
-	// ErrTooLarge is the error returned if Marshal is called with a
-	// message that encodes to >2GB.
-	ErrTooLarge = errors.New("proto: message encodes to over 2 GB")
-)
-
-// The fundamental encoders that put bytes on the wire.
-// Those that take integer types all accept uint64 and are
-// therefore of type valueEncoder.
-
-const maxVarintBytes = 10 // maximum length of a varint
-
-// EncodeVarint returns the varint encoding of x.
-// This is the format for the
-// int32, int64, uint32, uint64, bool, and enum
-// protocol buffer types.
-// Not used by the package itself, but helpful to clients
-// wishing to use the same encoding.
-func EncodeVarint(x uint64) []byte {
-	var buf [maxVarintBytes]byte
-	var n int
-	for n = 0; x > 127; n++ {
-		buf[n] = 0x80 | uint8(x&0x7F)
-		x >>= 7
-	}
-	buf[n] = uint8(x)
-	n++
-	return buf[0:n]
-}
-
-// EncodeVarint writes a varint-encoded integer to the Buffer.
-// This is the format for the
-// int32, int64, uint32, uint64, bool, and enum
-// protocol buffer types.
-func (p *Buffer) EncodeVarint(x uint64) error {
-	for x >= 1<<7 {
-		p.buf = append(p.buf, uint8(x&0x7f|0x80))
-		x >>= 7
-	}
-	p.buf = append(p.buf, uint8(x))
-	return nil
-}
-
-// SizeVarint returns the varint encoding size of an integer.
-func SizeVarint(x uint64) int {
-	switch {
-	case x < 1<<7:
-		return 1
-	case x < 1<<14:
-		return 2
-	case x < 1<<21:
-		return 3
-	case x < 1<<28:
-		return 4
-	case x < 1<<35:
-		return 5
-	case x < 1<<42:
-		return 6
-	case x < 1<<49:
-		return 7
-	case x < 1<<56:
-		return 8
-	case x < 1<<63:
-		return 9
-	}
-	return 10
-}
-
-// EncodeFixed64 writes a 64-bit integer to the Buffer.
-// This is the format for the
-// fixed64, sfixed64, and double protocol buffer types.
-func (p *Buffer) EncodeFixed64(x uint64) error {
-	p.buf = append(p.buf,
-		uint8(x),
-		uint8(x>>8),
-		uint8(x>>16),
-		uint8(x>>24),
-		uint8(x>>32),
-		uint8(x>>40),
-		uint8(x>>48),
-		uint8(x>>56))
-	return nil
-}
-
-// EncodeFixed32 writes a 32-bit integer to the Buffer.
-// This is the format for the
-// fixed32, sfixed32, and float protocol buffer types.
-func (p *Buffer) EncodeFixed32(x uint64) error {
-	p.buf = append(p.buf,
-		uint8(x),
-		uint8(x>>8),
-		uint8(x>>16),
-		uint8(x>>24))
-	return nil
-}
-
-// EncodeZigzag64 writes a zigzag-encoded 64-bit integer
-// to the Buffer.
-// This is the format used for the sint64 protocol buffer type.
-func (p *Buffer) EncodeZigzag64(x uint64) error {
-	// use signed number to get arithmetic right shift.
-	return p.EncodeVarint(uint64((x << 1) ^ uint64((int64(x) >> 63))))
-}
-
-// EncodeZigzag32 writes a zigzag-encoded 32-bit integer
-// to the Buffer.
-// This is the format used for the sint32 protocol buffer type.
-func (p *Buffer) EncodeZigzag32(x uint64) error {
-	// use signed number to get arithmetic right shift.
-	return p.EncodeVarint(uint64((uint32(x) << 1) ^ uint32((int32(x) >> 31))))
-}
-
-// EncodeRawBytes writes a count-delimited byte buffer to the Buffer.
-// This is the format used for the bytes protocol buffer
-// type and for embedded messages.
-func (p *Buffer) EncodeRawBytes(b []byte) error {
-	p.EncodeVarint(uint64(len(b)))
-	p.buf = append(p.buf, b...)
-	return nil
-}
-
-// EncodeStringBytes writes an encoded string to the Buffer.
-// This is the format used for the proto2 string type.
-func (p *Buffer) EncodeStringBytes(s string) error {
-	p.EncodeVarint(uint64(len(s)))
-	p.buf = append(p.buf, s...)
-	return nil
-}
-
-// Marshaler is the interface representing objects that can marshal themselves.
-type Marshaler interface {
-	Marshal() ([]byte, error)
-}
-
-// EncodeMessage writes the protocol buffer to the Buffer,
-// prefixed by a varint-encoded length.
-func (p *Buffer) EncodeMessage(pb Message) error {
-	siz := Size(pb)
-	p.EncodeVarint(uint64(siz))
-	return p.Marshal(pb)
-}
-
-// All protocol buffer fields are nillable, but be careful.
-func isNil(v reflect.Value) bool {
-	switch v.Kind() {
-	case reflect.Interface, reflect.Map, reflect.Ptr, reflect.Slice:
-		return v.IsNil()
-	}
-	return false
-}

vendor/github.com/golang/protobuf/proto/equal.go

@@ -1,301 +0,0 @@
-// Go support for Protocol Buffers - Google's data interchange format
-//
-// Copyright 2011 The Go Authors.  All rights reserved.
-// https://github.com/golang/protobuf
-//
-// Redistribution and use in source and binary forms, with or without
-// modification, are permitted provided that the following conditions are
-// met:
-//
-//     * Redistributions of source code must retain the above copyright
-// notice, this list of conditions and the following disclaimer.
-//     * Redistributions in binary form must reproduce the above
-// copyright notice, this list of conditions and the following disclaimer
-// in the documentation and/or other materials provided with the
-// distribution.
-//     * Neither the name of Google Inc. nor the names of its
-// contributors may be used to endorse or promote products derived from
-// this software without specific prior written permission.
-//
-// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-// Protocol buffer comparison.
-
-package proto
-
-import (
-	"bytes"
-	"log"
-	"reflect"
-	"strings"
-)
-
-/*
-Equal returns true iff protocol buffers a and b are equal.
-The arguments must both be pointers to protocol buffer structs.
-
-Equality is defined in this way:
-  - Two messages are equal iff they are the same type,
-    corresponding fields are equal, unknown field sets
-    are equal, and extensions sets are equal.
-  - Two set scalar fields are equal iff their values are equal.
-    If the fields are of a floating-point type, remember that
-    NaN != x for all x, including NaN. If the message is defined
-    in a proto3 .proto file, fields are not "set"; specifically,
-    zero length proto3 "bytes" fields are equal (nil == {}).
-  - Two repeated fields are equal iff their lengths are the same,
-    and their corresponding elements are equal. Note a "bytes" field,
-    although represented by []byte, is not a repeated field and the
-    rule for the scalar fields described above applies.
-  - Two unset fields are equal.
-  - Two unknown field sets are equal if their current
-    encoded state is equal.
-  - Two extension sets are equal iff they have corresponding
-    elements that are pairwise equal.
-  - Two map fields are equal iff their lengths are the same,
-    and they contain the same set of elements. Zero-length map
-    fields are equal.
-  - Every other combination of things are not equal.
-
-The return value is undefined if a and b are not protocol buffers.
-*/
-func Equal(a, b Message) bool {
-	if a == nil || b == nil {
-		return a == b
-	}
-	v1, v2 := reflect.ValueOf(a), reflect.ValueOf(b)
-	if v1.Type() != v2.Type() {
-		return false
-	}
-	if v1.Kind() == reflect.Ptr {
-		if v1.IsNil() {
-			return v2.IsNil()
-		}
-		if v2.IsNil() {
-			return false
-		}
-		v1, v2 = v1.Elem(), v2.Elem()
-	}
-	if v1.Kind() != reflect.Struct {
-		return false
-	}
-	return equalStruct(v1, v2)
-}
-
-// v1 and v2 are known to have the same type.
-func equalStruct(v1, v2 reflect.Value) bool {
-	sprop := GetProperties(v1.Type())
-	for i := 0; i < v1.NumField(); i++ {
-		f := v1.Type().Field(i)
-		if strings.HasPrefix(f.Name, "XXX_") {
-			continue
-		}
-		f1, f2 := v1.Field(i), v2.Field(i)
-		if f.Type.Kind() == reflect.Ptr {
-			if n1, n2 := f1.IsNil(), f2.IsNil(); n1 && n2 {
-				// both unset
-				continue
-			} else if n1 != n2 {
-				// set/unset mismatch
-				return false
-			}
-			f1, f2 = f1.Elem(), f2.Elem()
-		}
-		if !equalAny(f1, f2, sprop.Prop[i]) {
-			return false
-		}
-	}
-
-	if em1 := v1.FieldByName("XXX_InternalExtensions"); em1.IsValid() {
-		em2 := v2.FieldByName("XXX_InternalExtensions")
-		if !equalExtensions(v1.Type(), em1.Interface().(XXX_InternalExtensions), em2.Interface().(XXX_InternalExtensions)) {
-			return false
-		}
-	}
-
-	if em1 := v1.FieldByName("XXX_extensions"); em1.IsValid() {
-		em2 := v2.FieldByName("XXX_extensions")
-		if !equalExtMap(v1.Type(), em1.Interface().(map[int32]Extension), em2.Interface().(map[int32]Extension)) {
-			return false
-		}
-	}
-
-	uf := v1.FieldByName("XXX_unrecognized")
-	if !uf.IsValid() {
-		return true
-	}
-
-	u1 := uf.Bytes()
-	u2 := v2.FieldByName("XXX_unrecognized").Bytes()
-	return bytes.Equal(u1, u2)
-}
-
-// v1 and v2 are known to have the same type.
-// prop may be nil.
-func equalAny(v1, v2 reflect.Value, prop *Properties) bool {
-	if v1.Type() == protoMessageType {
-		m1, _ := v1.Interface().(Message)
-		m2, _ := v2.Interface().(Message)
-		return Equal(m1, m2)
-	}
-	switch v1.Kind() {
-	case reflect.Bool:
-		return v1.Bool() == v2.Bool()
-	case reflect.Float32, reflect.Float64:
-		return v1.Float() == v2.Float()
-	case reflect.Int32, reflect.Int64:
-		return v1.Int() == v2.Int()
-	case reflect.Interface:
-		// Probably a oneof field; compare the inner values.
-		n1, n2 := v1.IsNil(), v2.IsNil()
-		if n1 || n2 {
-			return n1 == n2
-		}
-		e1, e2 := v1.Elem(), v2.Elem()
-		if e1.Type() != e2.Type() {
-			return false
-		}
-		return equalAny(e1, e2, nil)
-	case reflect.Map:
-		if v1.Len() != v2.Len() {
-			return false
-		}
-		for _, key := range v1.MapKeys() {
-			val2 := v2.MapIndex(key)
-			if !val2.IsValid() {
-				// This key was not found in the second map.
-				return false
-			}
-			if !equalAny(v1.MapIndex(key), val2, nil) {
-				return false
-			}
-		}
-		return true
-	case reflect.Ptr:
-		// Maps may have nil values in them, so check for nil.
-		if v1.IsNil() && v2.IsNil() {
-			return true
-		}
-		if v1.IsNil() != v2.IsNil() {
-			return false
-		}
-		return equalAny(v1.Elem(), v2.Elem(), prop)
-	case reflect.Slice:
-		if v1.Type().Elem().Kind() == reflect.Uint8 {
-			// short circuit: []byte
-
-			// Edge case: if this is in a proto3 message, a zero length
-			// bytes field is considered the zero value.
-			if prop != nil && prop.proto3 && v1.Len() == 0 && v2.Len() == 0 {
-				return true
-			}
-			if v1.IsNil() != v2.IsNil() {
-				return false
-			}
-			return bytes.Equal(v1.Interface().([]byte), v2.Interface().([]byte))
-		}
-
-		if v1.Len() != v2.Len() {
-			return false
-		}
-		for i := 0; i < v1.Len(); i++ {
-			if !equalAny(v1.Index(i), v2.Index(i), prop) {
-				return false
-			}
-		}
-		return true
-	case reflect.String:
-		return v1.Interface().(string) == v2.Interface().(string)
-	case reflect.Struct:
-		return equalStruct(v1, v2)
-	case reflect.Uint32, reflect.Uint64:
-		return v1.Uint() == v2.Uint()
-	}
-
-	// unknown type, so not a protocol buffer
-	log.Printf("proto: don't know how to compare %v", v1)
-	return false
-}
-
-// base is the struct type that the extensions are based on.
-// x1 and x2 are InternalExtensions.
-func equalExtensions(base reflect.Type, x1, x2 XXX_InternalExtensions) bool {
-	em1, _ := x1.extensionsRead()
-	em2, _ := x2.extensionsRead()
-	return equalExtMap(base, em1, em2)
-}
-
-func equalExtMap(base reflect.Type, em1, em2 map[int32]Extension) bool {
-	if len(em1) != len(em2) {
-		return false
-	}
-
-	for extNum, e1 := range em1 {
-		e2, ok := em2[extNum]
-		if !ok {
-			return false
-		}
-
-		m1 := extensionAsLegacyType(e1.value)
-		m2 := extensionAsLegacyType(e2.value)
-
-		if m1 == nil && m2 == nil {
-			// Both have only encoded form.
-			if bytes.Equal(e1.enc, e2.enc) {
-				continue
-			}
-			// The bytes are different, but the extensions might still be
-			// equal. We need to decode them to compare.
-		}
-
-		if m1 != nil && m2 != nil {
-			// Both are unencoded.
-			if !equalAny(reflect.ValueOf(m1), reflect.ValueOf(m2), nil) {
-				return false
-			}
-			continue
-		}
-
-		// At least one is encoded. To do a semantically correct comparison
-		// we need to unmarshal them first.
-		var desc *ExtensionDesc
-		if m := extensionMaps[base]; m != nil {
-			desc = m[extNum]
-		}
-		if desc == nil {
-			// If both have only encoded form and the bytes are the same,
-			// it is handled above. We get here when the bytes are different.
-			// We don't know how to decode it, so just compare them as byte
-			// slices.
-			log.Printf("proto: don't know how to compare extension %d of %v", extNum, base)
-			return false
-		}
-		var err error
-		if m1 == nil {
-			m1, err = decodeExtension(e1.enc, desc)
-		}
-		if m2 == nil && err == nil {
-			m2, err = decodeExtension(e2.enc, desc)
-		}
-		if err != nil {
-			// The encoded form is invalid.
-			log.Printf("proto: badly encoded extension %d of %v: %v", extNum, base, err)
-			return false
-		}
-		if !equalAny(reflect.ValueOf(m1), reflect.ValueOf(m2), nil) {
-			return false
-		}
-	}
-
-	return true
-}

vendor/github.com/golang/protobuf/proto/extensions.go

@@ -1,607 +1,356 @@
-// Go support for Protocol Buffers - Google's data interchange format
+// Copyright 2010 The Go Authors. All rights reserved.
-//
+// Use of this source code is governed by a BSD-style
-// Copyright 2010 The Go Authors.  All rights reserved.
+// license that can be found in the LICENSE file.
-// https://github.com/golang/protobuf
-//
-// Redistribution and use in source and binary forms, with or without
-// modification, are permitted provided that the following conditions are
-// met:
-//
-//     * Redistributions of source code must retain the above copyright
-// notice, this list of conditions and the following disclaimer.
-//     * Redistributions in binary form must reproduce the above
-// copyright notice, this list of conditions and the following disclaimer
-// in the documentation and/or other materials provided with the
-// distribution.
-//     * Neither the name of Google Inc. nor the names of its
-// contributors may be used to endorse or promote products derived from
-// this software without specific prior written permission.
-//
-// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 package proto
 
-/*
- * Types and routines for supporting protocol buffer extensions.
- */
-
 import (
 	"errors"
 	"fmt"
-	"io"
 	"reflect"
-	"strconv"
+
-	"sync"
+	"google.golang.org/protobuf/encoding/protowire"
+	"google.golang.org/protobuf/proto"
+	"google.golang.org/protobuf/reflect/protoreflect"
+	"google.golang.org/protobuf/reflect/protoregistry"
+	"google.golang.org/protobuf/runtime/protoiface"
+	"google.golang.org/protobuf/runtime/protoimpl"
 )
 
-// ErrMissingExtension is the error returned by GetExtension if the named extension is not in the message.
+type (
+	// ExtensionDesc represents an extension descriptor and
+	// is used to interact with an extension field in a message.
+	//
+	// Variables of this type are generated in code by protoc-gen-go.
+	ExtensionDesc = protoimpl.ExtensionInfo
+
+	// ExtensionRange represents a range of message extensions.
+	// Used in code generated by protoc-gen-go.
+	ExtensionRange = protoiface.ExtensionRangeV1
+
+	// Deprecated: Do not use; this is an internal type.
+	Extension = protoimpl.ExtensionFieldV1
+
+	// Deprecated: Do not use; this is an internal type.
+	XXX_InternalExtensions = protoimpl.ExtensionFields
+)
+
+// ErrMissingExtension reports whether the extension was not present.
 var ErrMissingExtension = errors.New("proto: missing extension")
 
-// ExtensionRange represents a range of message extensions for a protocol buffer.
-// Used in code generated by the protocol compiler.
-type ExtensionRange struct {
-	Start, End int32 // both inclusive
-}
-
-// extendableProto is an interface implemented by any protocol buffer generated by the current
-// proto compiler that may be extended.
-type extendableProto interface {
-	Message
-	ExtensionRangeArray() []ExtensionRange
-	extensionsWrite() map[int32]Extension
-	extensionsRead() (map[int32]Extension, sync.Locker)
-}
-
-// extendableProtoV1 is an interface implemented by a protocol buffer generated by the previous
-// version of the proto compiler that may be extended.
-type extendableProtoV1 interface {
-	Message
-	ExtensionRangeArray() []ExtensionRange
-	ExtensionMap() map[int32]Extension
-}
-
-// extensionAdapter is a wrapper around extendableProtoV1 that implements extendableProto.
-type extensionAdapter struct {
-	extendableProtoV1
-}
-
-func (e extensionAdapter) extensionsWrite() map[int32]Extension {
-	return e.ExtensionMap()
-}
-
-func (e extensionAdapter) extensionsRead() (map[int32]Extension, sync.Locker) {
-	return e.ExtensionMap(), notLocker{}
-}
-
-// notLocker is a sync.Locker whose Lock and Unlock methods are nops.
-type notLocker struct{}
-
-func (n notLocker) Lock()   {}
-func (n notLocker) Unlock() {}
-
-// extendable returns the extendableProto interface for the given generated proto message.
-// If the proto message has the old extension format, it returns a wrapper that implements
-// the extendableProto interface.
-func extendable(p interface{}) (extendableProto, error) {
-	switch p := p.(type) {
-	case extendableProto:
-		if isNilPtr(p) {
-			return nil, fmt.Errorf("proto: nil %T is not extendable", p)
-		}
-		return p, nil
-	case extendableProtoV1:
-		if isNilPtr(p) {
-			return nil, fmt.Errorf("proto: nil %T is not extendable", p)
-		}
-		return extensionAdapter{p}, nil
-	}
-	// Don't allocate a specific error containing %T:
-	// this is the hot path for Clone and MarshalText.
-	return nil, errNotExtendable
-}
-
 var errNotExtendable = errors.New("proto: not an extendable proto.Message")
 
-func isNilPtr(x interface{}) bool {
+// HasExtension reports whether the extension field is present in m
-	v := reflect.ValueOf(x)
+// either as an explicitly populated field or as an unknown field.
-	return v.Kind() == reflect.Ptr && v.IsNil()
+func HasExtension(m Message, xt *ExtensionDesc) (has bool) {
-}
+	mr := MessageReflect(m)
-
+	if mr == nil || !mr.IsValid() {
-// XXX_InternalExtensions is an internal representation of proto extensions.
+		return false
-//
-// Each generated message struct type embeds an anonymous XXX_InternalExtensions field,
-// thus gaining the unexported 'extensions' method, which can be called only from the proto package.
-//
-// The methods of XXX_InternalExtensions are not concurrency safe in general,
-// but calls to logically read-only methods such as has and get may be executed concurrently.
-type XXX_InternalExtensions struct {
-	// The struct must be indirect so that if a user inadvertently copies a
-	// generated message and its embedded XXX_InternalExtensions, they
-	// avoid the mayhem of a copied mutex.
-	//
-	// The mutex serializes all logically read-only operations to p.extensionMap.
-	// It is up to the client to ensure that write operations to p.extensionMap are
-	// mutually exclusive with other accesses.
-	p *struct {
-		mu           sync.Mutex
-		extensionMap map[int32]Extension
 	}
-}
 
-// extensionsWrite returns the extension map, creating it on first use.
+	// Check whether any populated known field matches the field number.
-func (e *XXX_InternalExtensions) extensionsWrite() map[int32]Extension {
+	xtd := xt.TypeDescriptor()
-	if e.p == nil {
+	if isValidExtension(mr.Descriptor(), xtd) {
-		e.p = new(struct {
+		has = mr.Has(xtd)
-			mu           sync.Mutex
+	} else {
-			extensionMap map[int32]Extension
+		mr.Range(func(fd protoreflect.FieldDescriptor, _ protoreflect.Value) bool {
+			has = int32(fd.Number()) == xt.Field
+			return !has
 		})
-		e.p.extensionMap = make(map[int32]Extension)
 	}
-	return e.p.extensionMap
-}
 
-// extensionsRead returns the extensions map for read-only use.  It may be nil.
+	// Check whether any unknown field matches the field number.
-// The caller must hold the returned mutex's lock when accessing Elements within the map.
+	for b := mr.GetUnknown(); !has && len(b) > 0; {
-func (e *XXX_InternalExtensions) extensionsRead() (map[int32]Extension, sync.Locker) {
+		num, _, n := protowire.ConsumeField(b)
-	if e.p == nil {
+		has = int32(num) == xt.Field
-		return nil, nil
+		b = b[n:]
 	}
-	return e.p.extensionMap, &e.p.mu
+	return has
 }
 
-// ExtensionDesc represents an extension specification.
+// ClearExtension removes the extension field from m
-// Used in generated code from the protocol compiler.
+// either as an explicitly populated field or as an unknown field.
-type ExtensionDesc struct {
+func ClearExtension(m Message, xt *ExtensionDesc) {
-	ExtendedType  Message     // nil pointer to the type that is being extended
+	mr := MessageReflect(m)
-	ExtensionType interface{} // nil pointer to the extension type
+	if mr == nil || !mr.IsValid() {
-	Field         int32       // field number
-	Name          string      // fully-qualified name of extension, for text formatting
-	Tag           string      // protobuf tag style
-	Filename      string      // name of the file in which the extension is defined
-}
-
-func (ed *ExtensionDesc) repeated() bool {
-	t := reflect.TypeOf(ed.ExtensionType)
-	return t.Kind() == reflect.Slice && t.Elem().Kind() != reflect.Uint8
-}
-
-// Extension represents an extension in a message.
-type Extension struct {
-	// When an extension is stored in a message using SetExtension
-	// only desc and value are set. When the message is marshaled
-	// enc will be set to the encoded form of the message.
-	//
-	// When a message is unmarshaled and contains extensions, each
-	// extension will have only enc set. When such an extension is
-	// accessed using GetExtension (or GetExtensions) desc and value
-	// will be set.
-	desc *ExtensionDesc
-
-	// value is a concrete value for the extension field. Let the type of
-	// desc.ExtensionType be the "API type" and the type of Extension.value
-	// be the "storage type". The API type and storage type are the same except:
-	//	* For scalars (except []byte), the API type uses *T,
-	//	while the storage type uses T.
-	//	* For repeated fields, the API type uses []T, while the storage type
-	//	uses *[]T.
-	//
-	// The reason for the divergence is so that the storage type more naturally
-	// matches what is expected of when retrieving the values through the
-	// protobuf reflection APIs.
-	//
-	// The value may only be populated if desc is also populated.
-	value interface{}
-
-	// enc is the raw bytes for the extension field.
-	enc []byte
-}
-
-// SetRawExtension is for testing only.
-func SetRawExtension(base Message, id int32, b []byte) {
-	epb, err := extendable(base)
-	if err != nil {
 		return
 	}
-	extmap := epb.extensionsWrite()
-	extmap[id] = Extension{enc: b}
-}
 
-// isExtensionField returns true iff the given field number is in an extension range.
+	xtd := xt.TypeDescriptor()
-func isExtensionField(pb extendableProto, field int32) bool {
+	if isValidExtension(mr.Descriptor(), xtd) {
-	for _, er := range pb.ExtensionRangeArray() {
+		mr.Clear(xtd)
-		if er.Start <= field && field <= er.End {
+	} else {
+		mr.Range(func(fd protoreflect.FieldDescriptor, _ protoreflect.Value) bool {
+			if int32(fd.Number()) == xt.Field {
+				mr.Clear(fd)
+				return false
+			}
 			return true
-		}
+		})
 	}
-	return false
+	clearUnknown(mr, fieldNum(xt.Field))
 }
 
-// checkExtensionTypes checks that the given extension is valid for pb.
+// ClearAllExtensions clears all extensions from m.
-func checkExtensionTypes(pb extendableProto, extension *ExtensionDesc) error {
+// This includes populated fields and unknown fields in the extension range.
-	var pbi interface{} = pb
+func ClearAllExtensions(m Message) {
-	// Check the extended type.
+	mr := MessageReflect(m)
-	if ea, ok := pbi.(extensionAdapter); ok {
+	if mr == nil || !mr.IsValid() {
-		pbi = ea.extendableProtoV1
-	}
-	if a, b := reflect.TypeOf(pbi), reflect.TypeOf(extension.ExtendedType); a != b {
-		return fmt.Errorf("proto: bad extended type; %v does not extend %v", b, a)
-	}
-	// Check the range.
-	if !isExtensionField(pb, extension.Field) {
-		return errors.New("proto: bad extension number; not in declared ranges")
-	}
-	return nil
-}
-
-// extPropKey is sufficient to uniquely identify an extension.
-type extPropKey struct {
-	base  reflect.Type
-	field int32
-}
-
-var extProp = struct {
-	sync.RWMutex
-	m map[extPropKey]*Properties
-}{
-	m: make(map[extPropKey]*Properties),
-}
-
-func extensionProperties(ed *ExtensionDesc) *Properties {
-	key := extPropKey{base: reflect.TypeOf(ed.ExtendedType), field: ed.Field}
-
-	extProp.RLock()
-	if prop, ok := extProp.m[key]; ok {
-		extProp.RUnlock()
-		return prop
-	}
-	extProp.RUnlock()
-
-	extProp.Lock()
-	defer extProp.Unlock()
-	// Check again.
-	if prop, ok := extProp.m[key]; ok {
-		return prop
-	}
-
-	prop := new(Properties)
-	prop.Init(reflect.TypeOf(ed.ExtensionType), "unknown_name", ed.Tag, nil)
-	extProp.m[key] = prop
-	return prop
-}
-
-// HasExtension returns whether the given extension is present in pb.
-func HasExtension(pb Message, extension *ExtensionDesc) bool {
-	// TODO: Check types, field numbers, etc.?
-	epb, err := extendable(pb)
-	if err != nil {
-		return false
-	}
-	extmap, mu := epb.extensionsRead()
-	if extmap == nil {
-		return false
-	}
-	mu.Lock()
-	_, ok := extmap[extension.Field]
-	mu.Unlock()
-	return ok
-}
-
-// ClearExtension removes the given extension from pb.
-func ClearExtension(pb Message, extension *ExtensionDesc) {
-	epb, err := extendable(pb)
-	if err != nil {
 		return
 	}
-	// TODO: Check types, field numbers, etc.?
+
-	extmap := epb.extensionsWrite()
+	mr.Range(func(fd protoreflect.FieldDescriptor, _ protoreflect.Value) bool {
-	delete(extmap, extension.Field)
+		if fd.IsExtension() {
+			mr.Clear(fd)
+		}
+		return true
+	})
+	clearUnknown(mr, mr.Descriptor().ExtensionRanges())
 }
 
-// GetExtension retrieves a proto2 extended field from pb.
+// GetExtension retrieves a proto2 extended field from m.
 //
 // If the descriptor is type complete (i.e., ExtensionDesc.ExtensionType is non-nil),
 // then GetExtension parses the encoded field and returns a Go value of the specified type.
 // If the field is not present, then the default value is returned (if one is specified),
 // otherwise ErrMissingExtension is reported.
 //
-// If the descriptor is not type complete (i.e., ExtensionDesc.ExtensionType is nil),
+// If the descriptor is type incomplete (i.e., ExtensionDesc.ExtensionType is nil),
-// then GetExtension returns the raw encoded bytes of the field extension.
+// then GetExtension returns the raw encoded bytes for the extension field.
-func GetExtension(pb Message, extension *ExtensionDesc) (interface{}, error) {
+func GetExtension(m Message, xt *ExtensionDesc) (interface{}, error) {
-	epb, err := extendable(pb)
+	mr := MessageReflect(m)
-	if err != nil {
+	if mr == nil || !mr.IsValid() || mr.Descriptor().ExtensionRanges().Len() == 0 {
-		return nil, err
+		return nil, errNotExtendable
 	}
 
-	if extension.ExtendedType != nil {
+	// Retrieve the unknown fields for this extension field.
-		// can only check type if this is a complete descriptor
+	var bo protoreflect.RawFields
-		if err := checkExtensionTypes(epb, extension); err != nil {
+	for bi := mr.GetUnknown(); len(bi) > 0; {
+		num, _, n := protowire.ConsumeField(bi)
+		if int32(num) == xt.Field {
+			bo = append(bo, bi[:n]...)
+		}
+		bi = bi[n:]
+	}
+
+	// For type incomplete descriptors, only retrieve the unknown fields.
+	if xt.ExtensionType == nil {
+		return []byte(bo), nil
+	}
+
+	// If the extension field only exists as unknown fields, unmarshal it.
+	// This is rarely done since proto.Unmarshal eagerly unmarshals extensions.
+	xtd := xt.TypeDescriptor()
+	if !isValidExtension(mr.Descriptor(), xtd) {
+		return nil, fmt.Errorf("proto: bad extended type; %T does not extend %T", xt.ExtendedType, m)
+	}
+	if !mr.Has(xtd) && len(bo) > 0 {
+		m2 := mr.New()
+		if err := (proto.UnmarshalOptions{
+			Resolver: extensionResolver{xt},
+		}.Unmarshal(bo, m2.Interface())); err != nil {
 			return nil, err
 		}
-	}
+		if m2.Has(xtd) {
-
+			mr.Set(xtd, m2.Get(xtd))
-	emap, mu := epb.extensionsRead()
+			clearUnknown(mr, fieldNum(xt.Field))
-	if emap == nil {
-		return defaultExtensionValue(extension)
-	}
-	mu.Lock()
-	defer mu.Unlock()
-	e, ok := emap[extension.Field]
-	if !ok {
-		// defaultExtensionValue returns the default value or
-		// ErrMissingExtension if there is no default.
-		return defaultExtensionValue(extension)
-	}
-
-	if e.value != nil {
-		// Already decoded. Check the descriptor, though.
-		if e.desc != extension {
-			// This shouldn't happen. If it does, it means that
-			// GetExtension was called twice with two different
-			// descriptors with the same field number.
-			return nil, errors.New("proto: descriptor conflict")
 		}
-		return extensionAsLegacyType(e.value), nil
 	}
 
-	if extension.ExtensionType == nil {
+	// Check whether the message has the extension field set or a default.
-		// incomplete descriptor
+	var pv protoreflect.Value
-		return e.enc, nil
+	switch {
-	}
+	case mr.Has(xtd):
-
+		pv = mr.Get(xtd)
-	v, err := decodeExtension(e.enc, extension)
+	case xtd.HasDefault():
-	if err != nil {
+		pv = xtd.Default()
-		return nil, err
+	default:
-	}
-
-	// Remember the decoded version and drop the encoded version.
-	// That way it is safe to mutate what we return.
-	e.value = extensionAsStorageType(v)
-	e.desc = extension
-	e.enc = nil
-	emap[extension.Field] = e
-	return extensionAsLegacyType(e.value), nil
-}
-
-// defaultExtensionValue returns the default value for extension.
-// If no default for an extension is defined ErrMissingExtension is returned.
-func defaultExtensionValue(extension *ExtensionDesc) (interface{}, error) {
-	if extension.ExtensionType == nil {
-		// incomplete descriptor, so no default
 		return nil, ErrMissingExtension
 	}
 
-	t := reflect.TypeOf(extension.ExtensionType)
+	v := xt.InterfaceOf(pv)
-	props := extensionProperties(extension)
+	rv := reflect.ValueOf(v)
-
+	if isScalarKind(rv.Kind()) {
-	sf, _, err := fieldDefault(t, props)
-	if err != nil {
-		return nil, err
-	}
-
-	if sf == nil || sf.value == nil {
-		// There is no default value.
-		return nil, ErrMissingExtension
-	}
-
-	if t.Kind() != reflect.Ptr {
-		// We do not need to return a Ptr, we can directly return sf.value.
-		return sf.value, nil
-	}
-
-	// We need to return an interface{} that is a pointer to sf.value.
-	value := reflect.New(t).Elem()
-	value.Set(reflect.New(value.Type().Elem()))
-	if sf.kind == reflect.Int32 {
-		// We may have an int32 or an enum, but the underlying data is int32.
-		// Since we can't set an int32 into a non int32 reflect.value directly
-		// set it as a int32.
-		value.Elem().SetInt(int64(sf.value.(int32)))
-	} else {
-		value.Elem().Set(reflect.ValueOf(sf.value))
-	}
-	return value.Interface(), nil
-}
-
-// decodeExtension decodes an extension encoded in b.
-func decodeExtension(b []byte, extension *ExtensionDesc) (interface{}, error) {
-	t := reflect.TypeOf(extension.ExtensionType)
-	unmarshal := typeUnmarshaler(t, extension.Tag)
-
-	// t is a pointer to a struct, pointer to basic type or a slice.
-	// Allocate space to store the pointer/slice.
-	value := reflect.New(t).Elem()
-
-	var err error
-	for {
-		x, n := decodeVarint(b)
-		if n == 0 {
-			return nil, io.ErrUnexpectedEOF
-		}
-		b = b[n:]
-		wire := int(x) & 7
-
-		b, err = unmarshal(b, valToPointer(value.Addr()), wire)
-		if err != nil {
-			return nil, err
-		}
-
-		if len(b) == 0 {
-			break
-		}
-	}
-	return value.Interface(), nil
-}
-
-// GetExtensions returns a slice of the extensions present in pb that are also listed in es.
-// The returned slice has the same length as es; missing extensions will appear as nil elements.
-func GetExtensions(pb Message, es []*ExtensionDesc) (extensions []interface{}, err error) {
-	epb, err := extendable(pb)
-	if err != nil {
-		return nil, err
-	}
-	extensions = make([]interface{}, len(es))
-	for i, e := range es {
-		extensions[i], err = GetExtension(epb, e)
-		if err == ErrMissingExtension {
-			err = nil
-		}
-		if err != nil {
-			return
-		}
-	}
-	return
-}
-
-// ExtensionDescs returns a new slice containing pb's extension descriptors, in undefined order.
-// For non-registered extensions, ExtensionDescs returns an incomplete descriptor containing
-// just the Field field, which defines the extension's field number.
-func ExtensionDescs(pb Message) ([]*ExtensionDesc, error) {
-	epb, err := extendable(pb)
-	if err != nil {
-		return nil, err
-	}
-	registeredExtensions := RegisteredExtensions(pb)
-
-	emap, mu := epb.extensionsRead()
-	if emap == nil {
-		return nil, nil
-	}
-	mu.Lock()
-	defer mu.Unlock()
-	extensions := make([]*ExtensionDesc, 0, len(emap))
-	for extid, e := range emap {
-		desc := e.desc
-		if desc == nil {
-			desc = registeredExtensions[extid]
-			if desc == nil {
-				desc = &ExtensionDesc{Field: extid}
-			}
-		}
-
-		extensions = append(extensions, desc)
-	}
-	return extensions, nil
-}
-
-// SetExtension sets the specified extension of pb to the specified value.
-func SetExtension(pb Message, extension *ExtensionDesc, value interface{}) error {
-	epb, err := extendable(pb)
-	if err != nil {
-		return err
-	}
-	if err := checkExtensionTypes(epb, extension); err != nil {
-		return err
-	}
-	typ := reflect.TypeOf(extension.ExtensionType)
-	if typ != reflect.TypeOf(value) {
-		return fmt.Errorf("proto: bad extension value type. got: %T, want: %T", value, extension.ExtensionType)
-	}
-	// nil extension values need to be caught early, because the
-	// encoder can't distinguish an ErrNil due to a nil extension
-	// from an ErrNil due to a missing field. Extensions are
-	// always optional, so the encoder would just swallow the error
-	// and drop all the extensions from the encoded message.
-	if reflect.ValueOf(value).IsNil() {
-		return fmt.Errorf("proto: SetExtension called with nil value of type %T", value)
-	}
-
-	extmap := epb.extensionsWrite()
-	extmap[extension.Field] = Extension{desc: extension, value: extensionAsStorageType(value)}
-	return nil
-}
-
-// ClearAllExtensions clears all extensions from pb.
-func ClearAllExtensions(pb Message) {
-	epb, err := extendable(pb)
-	if err != nil {
-		return
-	}
-	m := epb.extensionsWrite()
-	for k := range m {
-		delete(m, k)
-	}
-}
-
-// A global registry of extensions.
-// The generated code will register the generated descriptors by calling RegisterExtension.
-
-var extensionMaps = make(map[reflect.Type]map[int32]*ExtensionDesc)
-
-// RegisterExtension is called from the generated code.
-func RegisterExtension(desc *ExtensionDesc) {
-	st := reflect.TypeOf(desc.ExtendedType).Elem()
-	m := extensionMaps[st]
-	if m == nil {
-		m = make(map[int32]*ExtensionDesc)
-		extensionMaps[st] = m
-	}
-	if _, ok := m[desc.Field]; ok {
-		panic("proto: duplicate extension registered: " + st.String() + " " + strconv.Itoa(int(desc.Field)))
-	}
-	m[desc.Field] = desc
-}
-
-// RegisteredExtensions returns a map of the registered extensions of a
-// protocol buffer struct, indexed by the extension number.
-// The argument pb should be a nil pointer to the struct type.
-func RegisteredExtensions(pb Message) map[int32]*ExtensionDesc {
-	return extensionMaps[reflect.TypeOf(pb).Elem()]
-}
-
-// extensionAsLegacyType converts an value in the storage type as the API type.
-// See Extension.value.
-func extensionAsLegacyType(v interface{}) interface{} {
-	switch rv := reflect.ValueOf(v); rv.Kind() {
-	case reflect.Bool, reflect.Int32, reflect.Int64, reflect.Uint32, reflect.Uint64, reflect.Float32, reflect.Float64, reflect.String:
-		// Represent primitive types as a pointer to the value.
 		rv2 := reflect.New(rv.Type())
 		rv2.Elem().Set(rv)
 		v = rv2.Interface()
-	case reflect.Ptr:
-		// Represent slice types as the value itself.
-		switch rv.Type().Elem().Kind() {
-		case reflect.Slice:
-			if rv.IsNil() {
-				v = reflect.Zero(rv.Type().Elem()).Interface()
-			} else {
-				v = rv.Elem().Interface()
-			}
-		}
 	}
-	return v
+	return v, nil
 }
 
-// extensionAsStorageType converts an value in the API type as the storage type.
+// extensionResolver is a custom extension resolver that stores a single
-// See Extension.value.
+// extension type that takes precedence over the global registry.
-func extensionAsStorageType(v interface{}) interface{} {
+type extensionResolver struct{ xt protoreflect.ExtensionType }
-	switch rv := reflect.ValueOf(v); rv.Kind() {
+
-	case reflect.Ptr:
+func (r extensionResolver) FindExtensionByName(field protoreflect.FullName) (protoreflect.ExtensionType, error) {
-		// Represent slice types as the value itself.
+	if xtd := r.xt.TypeDescriptor(); xtd.FullName() == field {
-		switch rv.Type().Elem().Kind() {
+		return r.xt, nil
-		case reflect.Bool, reflect.Int32, reflect.Int64, reflect.Uint32, reflect.Uint64, reflect.Float32, reflect.Float64, reflect.String:
+	}
-			if rv.IsNil() {
+	return protoregistry.GlobalTypes.FindExtensionByName(field)
-				v = reflect.Zero(rv.Type().Elem()).Interface()
+}
-			} else {
+
-				v = rv.Elem().Interface()
+func (r extensionResolver) FindExtensionByNumber(message protoreflect.FullName, field protoreflect.FieldNumber) (protoreflect.ExtensionType, error) {
+	if xtd := r.xt.TypeDescriptor(); xtd.ContainingMessage().FullName() == message && xtd.Number() == field {
+		return r.xt, nil
+	}
+	return protoregistry.GlobalTypes.FindExtensionByNumber(message, field)
+}
+
+// GetExtensions returns a list of the extensions values present in m,
+// corresponding with the provided list of extension descriptors, xts.
+// If an extension is missing in m, the corresponding value is nil.
+func GetExtensions(m Message, xts []*ExtensionDesc) ([]interface{}, error) {
+	mr := MessageReflect(m)
+	if mr == nil || !mr.IsValid() {
+		return nil, errNotExtendable
+	}
+
+	vs := make([]interface{}, len(xts))
+	for i, xt := range xts {
+		v, err := GetExtension(m, xt)
+		if err != nil {
+			if err == ErrMissingExtension {
+				continue
 			}
+			return vs, err
 		}
-	case reflect.Slice:
+		vs[i] = v
-		// Represent slice types as a pointer to the value.
+	}
-		if rv.Type().Elem().Kind() != reflect.Uint8 {
+	return vs, nil
-			rv2 := reflect.New(rv.Type())
+}
-			rv2.Elem().Set(rv)
+
-			v = rv2.Interface()
+// SetExtension sets an extension field in m to the provided value.
+func SetExtension(m Message, xt *ExtensionDesc, v interface{}) error {
+	mr := MessageReflect(m)
+	if mr == nil || !mr.IsValid() || mr.Descriptor().ExtensionRanges().Len() == 0 {
+		return errNotExtendable
+	}
+
+	rv := reflect.ValueOf(v)
+	if reflect.TypeOf(v) != reflect.TypeOf(xt.ExtensionType) {
+		return fmt.Errorf("proto: bad extension value type. got: %T, want: %T", v, xt.ExtensionType)
+	}
+	if rv.Kind() == reflect.Ptr {
+		if rv.IsNil() {
+			return fmt.Errorf("proto: SetExtension called with nil value of type %T", v)
+		}
+		if isScalarKind(rv.Elem().Kind()) {
+			v = rv.Elem().Interface()
 		}
 	}
-	return v
+
+	xtd := xt.TypeDescriptor()
+	if !isValidExtension(mr.Descriptor(), xtd) {
+		return fmt.Errorf("proto: bad extended type; %T does not extend %T", xt.ExtendedType, m)
+	}
+	mr.Set(xtd, xt.ValueOf(v))
+	clearUnknown(mr, fieldNum(xt.Field))
+	return nil
+}
+
+// SetRawExtension inserts b into the unknown fields of m.
+//
+// Deprecated: Use Message.ProtoReflect.SetUnknown instead.
+func SetRawExtension(m Message, fnum int32, b []byte) {
+	mr := MessageReflect(m)
+	if mr == nil || !mr.IsValid() {
+		return
+	}
+
+	// Verify that the raw field is valid.
+	for b0 := b; len(b0) > 0; {
+		num, _, n := protowire.ConsumeField(b0)
+		if int32(num) != fnum {
+			panic(fmt.Sprintf("mismatching field number: got %d, want %d", num, fnum))
+		}
+		b0 = b0[n:]
+	}
+
+	ClearExtension(m, &ExtensionDesc{Field: fnum})
+	mr.SetUnknown(append(mr.GetUnknown(), b...))
+}
+
+// ExtensionDescs returns a list of extension descriptors found in m,
+// containing descriptors for both populated extension fields in m and
+// also unknown fields of m that are in the extension range.
+// For the later case, an type incomplete descriptor is provided where only
+// the ExtensionDesc.Field field is populated.
+// The order of the extension descriptors is undefined.
+func ExtensionDescs(m Message) ([]*ExtensionDesc, error) {
+	mr := MessageReflect(m)
+	if mr == nil || !mr.IsValid() || mr.Descriptor().ExtensionRanges().Len() == 0 {
+		return nil, errNotExtendable
+	}
+
+	// Collect a set of known extension descriptors.
+	extDescs := make(map[protoreflect.FieldNumber]*ExtensionDesc)
+	mr.Range(func(fd protoreflect.FieldDescriptor, v protoreflect.Value) bool {
+		if fd.IsExtension() {
+			xt := fd.(protoreflect.ExtensionTypeDescriptor)
+			if xd, ok := xt.Type().(*ExtensionDesc); ok {
+				extDescs[fd.Number()] = xd
+			}
+		}
+		return true
+	})
+
+	// Collect a set of unknown extension descriptors.
+	extRanges := mr.Descriptor().ExtensionRanges()
+	for b := mr.GetUnknown(); len(b) > 0; {
+		num, _, n := protowire.ConsumeField(b)
+		if extRanges.Has(num) && extDescs[num] == nil {
+			extDescs[num] = nil
+		}
+		b = b[n:]
+	}
+
+	// Transpose the set of descriptors into a list.
+	var xts []*ExtensionDesc
+	for num, xt := range extDescs {
+		if xt == nil {
+			xt = &ExtensionDesc{Field: int32(num)}
+		}
+		xts = append(xts, xt)
+	}
+	return xts, nil
+}
+
+// isValidExtension reports whether xtd is a valid extension descriptor for md.
+func isValidExtension(md protoreflect.MessageDescriptor, xtd protoreflect.ExtensionTypeDescriptor) bool {
+	return xtd.ContainingMessage() == md && md.ExtensionRanges().Has(xtd.Number())
+}
+
+// isScalarKind reports whether k is a protobuf scalar kind (except bytes).
+// This function exists for historical reasons since the representation of
+// scalars differs between v1 and v2, where v1 uses *T and v2 uses T.
+func isScalarKind(k reflect.Kind) bool {
+	switch k {
+	case reflect.Bool, reflect.Int32, reflect.Int64, reflect.Uint32, reflect.Uint64, reflect.Float32, reflect.Float64, reflect.String:
+		return true
+	default:
+		return false
+	}
+}
+
+// clearUnknown removes unknown fields from m where remover.Has reports true.
+func clearUnknown(m protoreflect.Message, remover interface {
+	Has(protoreflect.FieldNumber) bool
+}) {
+	var bo protoreflect.RawFields
+	for bi := m.GetUnknown(); len(bi) > 0; {
+		num, _, n := protowire.ConsumeField(bi)
+		if !remover.Has(num) {
+			bo = append(bo, bi[:n]...)
+		}
+		bi = bi[n:]
+	}
+	if bi := m.GetUnknown(); len(bi) != len(bo) {
+		m.SetUnknown(bo)
+	}
+}
+
+type fieldNum protoreflect.FieldNumber
+
+func (n1 fieldNum) Has(n2 protoreflect.FieldNumber) bool {
+	return protoreflect.FieldNumber(n1) == n2
 }

vendor/github.com/golang/protobuf/proto/lib.go

@@ -1,965 +0,0 @@
-// Go support for Protocol Buffers - Google's data interchange format
-//
-// Copyright 2010 The Go Authors.  All rights reserved.
-// https://github.com/golang/protobuf
-//
-// Redistribution and use in source and binary forms, with or without
-// modification, are permitted provided that the following conditions are
-// met:
-//
-//     * Redistributions of source code must retain the above copyright
-// notice, this list of conditions and the following disclaimer.
-//     * Redistributions in binary form must reproduce the above
-// copyright notice, this list of conditions and the following disclaimer
-// in the documentation and/or other materials provided with the
-// distribution.
-//     * Neither the name of Google Inc. nor the names of its
-// contributors may be used to endorse or promote products derived from
-// this software without specific prior written permission.
-//
-// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-/*
-Package proto converts data structures to and from the wire format of
-protocol buffers.  It works in concert with the Go source code generated
-for .proto files by the protocol compiler.
-
-A summary of the properties of the protocol buffer interface
-for a protocol buffer variable v:
-
-  - Names are turned from camel_case to CamelCase for export.
-  - There are no methods on v to set fields; just treat
-	them as structure fields.
-  - There are getters that return a field's value if set,
-	and return the field's default value if unset.
-	The getters work even if the receiver is a nil message.
-  - The zero value for a struct is its correct initialization state.
-	All desired fields must be set before marshaling.
-  - A Reset() method will restore a protobuf struct to its zero state.
-  - Non-repeated fields are pointers to the values; nil means unset.
-	That is, optional or required field int32 f becomes F *int32.
-  - Repeated fields are slices.
-  - Helper functions are available to aid the setting of fields.
-	msg.Foo = proto.String("hello") // set field
-  - Constants are defined to hold the default values of all fields that
-	have them.  They have the form Default_StructName_FieldName.
-	Because the getter methods handle defaulted values,
-	direct use of these constants should be rare.
-  - Enums are given type names and maps from names to values.
-	Enum values are prefixed by the enclosing message's name, or by the
-	enum's type name if it is a top-level enum. Enum types have a String
-	method, and a Enum method to assist in message construction.
-  - Nested messages, groups and enums have type names prefixed with the name of
-	the surrounding message type.
-  - Extensions are given descriptor names that start with E_,
-	followed by an underscore-delimited list of the nested messages
-	that contain it (if any) followed by the CamelCased name of the
-	extension field itself.  HasExtension, ClearExtension, GetExtension
-	and SetExtension are functions for manipulating extensions.
-  - Oneof field sets are given a single field in their message,
-	with distinguished wrapper types for each possible field value.
-  - Marshal and Unmarshal are functions to encode and decode the wire format.
-
-When the .proto file specifies `syntax="proto3"`, there are some differences:
-
-  - Non-repeated fields of non-message type are values instead of pointers.
-  - Enum types do not get an Enum method.
-
-The simplest way to describe this is to see an example.
-Given file test.proto, containing
-
-	package example;
-
-	enum FOO { X = 17; }
-
-	message Test {
-	  required string label = 1;
-	  optional int32 type = 2 [default=77];
-	  repeated int64 reps = 3;
-	  optional group OptionalGroup = 4 {
-	    required string RequiredField = 5;
-	  }
-	  oneof union {
-	    int32 number = 6;
-	    string name = 7;
-	  }
-	}
-
-The resulting file, test.pb.go, is:
-
-	package example
-
-	import proto "github.com/golang/protobuf/proto"
-	import math "math"
-
-	type FOO int32
-	const (
-		FOO_X FOO = 17
-	)
-	var FOO_name = map[int32]string{
-		17: "X",
-	}
-	var FOO_value = map[string]int32{
-		"X": 17,
-	}
-
-	func (x FOO) Enum() *FOO {
-		p := new(FOO)
-		*p = x
-		return p
-	}
-	func (x FOO) String() string {
-		return proto.EnumName(FOO_name, int32(x))
-	}
-	func (x *FOO) UnmarshalJSON(data []byte) error {
-		value, err := proto.UnmarshalJSONEnum(FOO_value, data)
-		if err != nil {
-			return err
-		}
-		*x = FOO(value)
-		return nil
-	}
-
-	type Test struct {
-		Label         *string             `protobuf:"bytes,1,req,name=label" json:"label,omitempty"`
-		Type          *int32              `protobuf:"varint,2,opt,name=type,def=77" json:"type,omitempty"`
-		Reps          []int64             `protobuf:"varint,3,rep,name=reps" json:"reps,omitempty"`
-		Optionalgroup *Test_OptionalGroup `protobuf:"group,4,opt,name=OptionalGroup" json:"optionalgroup,omitempty"`
-		// Types that are valid to be assigned to Union:
-		//	*Test_Number
-		//	*Test_Name
-		Union            isTest_Union `protobuf_oneof:"union"`
-		XXX_unrecognized []byte       `json:"-"`
-	}
-	func (m *Test) Reset()         { *m = Test{} }
-	func (m *Test) String() string { return proto.CompactTextString(m) }
-	func (*Test) ProtoMessage() {}
-
-	type isTest_Union interface {
-		isTest_Union()
-	}
-
-	type Test_Number struct {
-		Number int32 `protobuf:"varint,6,opt,name=number"`
-	}
-	type Test_Name struct {
-		Name string `protobuf:"bytes,7,opt,name=name"`
-	}
-
-	func (*Test_Number) isTest_Union() {}
-	func (*Test_Name) isTest_Union()   {}
-
-	func (m *Test) GetUnion() isTest_Union {
-		if m != nil {
-			return m.Union
-		}
-		return nil
-	}
-	const Default_Test_Type int32 = 77
-
-	func (m *Test) GetLabel() string {
-		if m != nil && m.Label != nil {
-			return *m.Label
-		}
-		return ""
-	}
-
-	func (m *Test) GetType() int32 {
-		if m != nil && m.Type != nil {
-			return *m.Type
-		}
-		return Default_Test_Type
-	}
-
-	func (m *Test) GetOptionalgroup() *Test_OptionalGroup {
-		if m != nil {
-			return m.Optionalgroup
-		}
-		return nil
-	}
-
-	type Test_OptionalGroup struct {
-		RequiredField *string `protobuf:"bytes,5,req" json:"RequiredField,omitempty"`
-	}
-	func (m *Test_OptionalGroup) Reset()         { *m = Test_OptionalGroup{} }
-	func (m *Test_OptionalGroup) String() string { return proto.CompactTextString(m) }
-
-	func (m *Test_OptionalGroup) GetRequiredField() string {
-		if m != nil && m.RequiredField != nil {
-			return *m.RequiredField
-		}
-		return ""
-	}
-
-	func (m *Test) GetNumber() int32 {
-		if x, ok := m.GetUnion().(*Test_Number); ok {
-			return x.Number
-		}
-		return 0
-	}
-
-	func (m *Test) GetName() string {
-		if x, ok := m.GetUnion().(*Test_Name); ok {
-			return x.Name
-		}
-		return ""
-	}
-
-	func init() {
-		proto.RegisterEnum("example.FOO", FOO_name, FOO_value)
-	}
-
-To create and play with a Test object:
-
-	package main
-
-	import (
-		"log"
-
-		"github.com/golang/protobuf/proto"
-		pb "./example.pb"
-	)
-
-	func main() {
-		test := &pb.Test{
-			Label: proto.String("hello"),
-			Type:  proto.Int32(17),
-			Reps:  []int64{1, 2, 3},
-			Optionalgroup: &pb.Test_OptionalGroup{
-				RequiredField: proto.String("good bye"),
-			},
-			Union: &pb.Test_Name{"fred"},
-		}
-		data, err := proto.Marshal(test)
-		if err != nil {
-			log.Fatal("marshaling error: ", err)
-		}
-		newTest := &pb.Test{}
-		err = proto.Unmarshal(data, newTest)
-		if err != nil {
-			log.Fatal("unmarshaling error: ", err)
-		}
-		// Now test and newTest contain the same data.
-		if test.GetLabel() != newTest.GetLabel() {
-			log.Fatalf("data mismatch %q != %q", test.GetLabel(), newTest.GetLabel())
-		}
-		// Use a type switch to determine which oneof was set.
-		switch u := test.Union.(type) {
-		case *pb.Test_Number: // u.Number contains the number.
-		case *pb.Test_Name: // u.Name contains the string.
-		}
-		// etc.
-	}
-*/
-package proto
-
-import (
-	"encoding/json"
-	"fmt"
-	"log"
-	"reflect"
-	"sort"
-	"strconv"
-	"sync"
-)
-
-// RequiredNotSetError is an error type returned by either Marshal or Unmarshal.
-// Marshal reports this when a required field is not initialized.
-// Unmarshal reports this when a required field is missing from the wire data.
-type RequiredNotSetError struct{ field string }
-
-func (e *RequiredNotSetError) Error() string {
-	if e.field == "" {
-		return fmt.Sprintf("proto: required field not set")
-	}
-	return fmt.Sprintf("proto: required field %q not set", e.field)
-}
-func (e *RequiredNotSetError) RequiredNotSet() bool {
-	return true
-}
-
-type invalidUTF8Error struct{ field string }
-
-func (e *invalidUTF8Error) Error() string {
-	if e.field == "" {
-		return "proto: invalid UTF-8 detected"
-	}
-	return fmt.Sprintf("proto: field %q contains invalid UTF-8", e.field)
-}
-func (e *invalidUTF8Error) InvalidUTF8() bool {
-	return true
-}
-
-// errInvalidUTF8 is a sentinel error to identify fields with invalid UTF-8.
-// This error should not be exposed to the external API as such errors should
-// be recreated with the field information.
-var errInvalidUTF8 = &invalidUTF8Error{}
-
-// isNonFatal reports whether the error is either a RequiredNotSet error
-// or a InvalidUTF8 error.
-func isNonFatal(err error) bool {
-	if re, ok := err.(interface{ RequiredNotSet() bool }); ok && re.RequiredNotSet() {
-		return true
-	}
-	if re, ok := err.(interface{ InvalidUTF8() bool }); ok && re.InvalidUTF8() {
-		return true
-	}
-	return false
-}
-
-type nonFatal struct{ E error }
-
-// Merge merges err into nf and reports whether it was successful.
-// Otherwise it returns false for any fatal non-nil errors.
-func (nf *nonFatal) Merge(err error) (ok bool) {
-	if err == nil {
-		return true // not an error
-	}
-	if !isNonFatal(err) {
-		return false // fatal error
-	}
-	if nf.E == nil {
-		nf.E = err // store first instance of non-fatal error
-	}
-	return true
-}
-
-// Message is implemented by generated protocol buffer messages.
-type Message interface {
-	Reset()
-	String() string
-	ProtoMessage()
-}
-
-// A Buffer is a buffer manager for marshaling and unmarshaling
-// protocol buffers.  It may be reused between invocations to
-// reduce memory usage.  It is not necessary to use a Buffer;
-// the global functions Marshal and Unmarshal create a
-// temporary Buffer and are fine for most applications.
-type Buffer struct {
-	buf   []byte // encode/decode byte stream
-	index int    // read point
-
-	deterministic bool
-}
-
-// NewBuffer allocates a new Buffer and initializes its internal data to
-// the contents of the argument slice.
-func NewBuffer(e []byte) *Buffer {
-	return &Buffer{buf: e}
-}
-
-// Reset resets the Buffer, ready for marshaling a new protocol buffer.
-func (p *Buffer) Reset() {
-	p.buf = p.buf[0:0] // for reading/writing
-	p.index = 0        // for reading
-}
-
-// SetBuf replaces the internal buffer with the slice,
-// ready for unmarshaling the contents of the slice.
-func (p *Buffer) SetBuf(s []byte) {
-	p.buf = s
-	p.index = 0
-}
-
-// Bytes returns the contents of the Buffer.
-func (p *Buffer) Bytes() []byte { return p.buf }
-
-// SetDeterministic sets whether to use deterministic serialization.
-//
-// Deterministic serialization guarantees that for a given binary, equal
-// messages will always be serialized to the same bytes. This implies:
-//
-//   - Repeated serialization of a message will return the same bytes.
-//   - Different processes of the same binary (which may be executing on
-//     different machines) will serialize equal messages to the same bytes.
-//
-// Note that the deterministic serialization is NOT canonical across
-// languages. It is not guaranteed to remain stable over time. It is unstable
-// across different builds with schema changes due to unknown fields.
-// Users who need canonical serialization (e.g., persistent storage in a
-// canonical form, fingerprinting, etc.) should define their own
-// canonicalization specification and implement their own serializer rather
-// than relying on this API.
-//
-// If deterministic serialization is requested, map entries will be sorted
-// by keys in lexicographical order. This is an implementation detail and
-// subject to change.
-func (p *Buffer) SetDeterministic(deterministic bool) {
-	p.deterministic = deterministic
-}
-
-/*
- * Helper routines for simplifying the creation of optional fields of basic type.
- */
-
-// Bool is a helper routine that allocates a new bool value
-// to store v and returns a pointer to it.
-func Bool(v bool) *bool {
-	return &v
-}
-
-// Int32 is a helper routine that allocates a new int32 value
-// to store v and returns a pointer to it.
-func Int32(v int32) *int32 {
-	return &v
-}
-
-// Int is a helper routine that allocates a new int32 value
-// to store v and returns a pointer to it, but unlike Int32
-// its argument value is an int.
-func Int(v int) *int32 {
-	p := new(int32)
-	*p = int32(v)
-	return p
-}
-
-// Int64 is a helper routine that allocates a new int64 value
-// to store v and returns a pointer to it.
-func Int64(v int64) *int64 {
-	return &v
-}
-
-// Float32 is a helper routine that allocates a new float32 value
-// to store v and returns a pointer to it.
-func Float32(v float32) *float32 {
-	return &v
-}
-
-// Float64 is a helper routine that allocates a new float64 value
-// to store v and returns a pointer to it.
-func Float64(v float64) *float64 {
-	return &v
-}
-
-// Uint32 is a helper routine that allocates a new uint32 value
-// to store v and returns a pointer to it.
-func Uint32(v uint32) *uint32 {
-	return &v
-}
-
-// Uint64 is a helper routine that allocates a new uint64 value
-// to store v and returns a pointer to it.
-func Uint64(v uint64) *uint64 {
-	return &v
-}
-
-// String is a helper routine that allocates a new string value
-// to store v and returns a pointer to it.
-func String(v string) *string {
-	return &v
-}
-
-// EnumName is a helper function to simplify printing protocol buffer enums
-// by name.  Given an enum map and a value, it returns a useful string.
-func EnumName(m map[int32]string, v int32) string {
-	s, ok := m[v]
-	if ok {
-		return s
-	}
-	return strconv.Itoa(int(v))
-}
-
-// UnmarshalJSONEnum is a helper function to simplify recovering enum int values
-// from their JSON-encoded representation. Given a map from the enum's symbolic
-// names to its int values, and a byte buffer containing the JSON-encoded
-// value, it returns an int32 that can be cast to the enum type by the caller.
-//
-// The function can deal with both JSON representations, numeric and symbolic.
-func UnmarshalJSONEnum(m map[string]int32, data []byte, enumName string) (int32, error) {
-	if data[0] == '"' {
-		// New style: enums are strings.
-		var repr string
-		if err := json.Unmarshal(data, &repr); err != nil {
-			return -1, err
-		}
-		val, ok := m[repr]
-		if !ok {
-			return 0, fmt.Errorf("unrecognized enum %s value %q", enumName, repr)
-		}
-		return val, nil
-	}
-	// Old style: enums are ints.
-	var val int32
-	if err := json.Unmarshal(data, &val); err != nil {
-		return 0, fmt.Errorf("cannot unmarshal %#q into enum %s", data, enumName)
-	}
-	return val, nil
-}
-
-// DebugPrint dumps the encoded data in b in a debugging format with a header
-// including the string s. Used in testing but made available for general debugging.
-func (p *Buffer) DebugPrint(s string, b []byte) {
-	var u uint64
-
-	obuf := p.buf
-	index := p.index
-	p.buf = b
-	p.index = 0
-	depth := 0
-
-	fmt.Printf("\n--- %s ---\n", s)
-
-out:
-	for {
-		for i := 0; i < depth; i++ {
-			fmt.Print("  ")
-		}
-
-		index := p.index
-		if index == len(p.buf) {
-			break
-		}
-
-		op, err := p.DecodeVarint()
-		if err != nil {
-			fmt.Printf("%3d: fetching op err %v\n", index, err)
-			break out
-		}
-		tag := op >> 3
-		wire := op & 7
-
-		switch wire {
-		default:
-			fmt.Printf("%3d: t=%3d unknown wire=%d\n",
-				index, tag, wire)
-			break out
-
-		case WireBytes:
-			var r []byte
-
-			r, err = p.DecodeRawBytes(false)
-			if err != nil {
-				break out
-			}
-			fmt.Printf("%3d: t=%3d bytes [%d]", index, tag, len(r))
-			if len(r) <= 6 {
-				for i := 0; i < len(r); i++ {
-					fmt.Printf(" %.2x", r[i])
-				}
-			} else {
-				for i := 0; i < 3; i++ {
-					fmt.Printf(" %.2x", r[i])
-				}
-				fmt.Printf(" ..")
-				for i := len(r) - 3; i < len(r); i++ {
-					fmt.Printf(" %.2x", r[i])
-				}
-			}
-			fmt.Printf("\n")
-
-		case WireFixed32:
-			u, err = p.DecodeFixed32()
-			if err != nil {
-				fmt.Printf("%3d: t=%3d fix32 err %v\n", index, tag, err)
-				break out
-			}
-			fmt.Printf("%3d: t=%3d fix32 %d\n", index, tag, u)
-
-		case WireFixed64:
-			u, err = p.DecodeFixed64()
-			if err != nil {
-				fmt.Printf("%3d: t=%3d fix64 err %v\n", index, tag, err)
-				break out
-			}
-			fmt.Printf("%3d: t=%3d fix64 %d\n", index, tag, u)
-
-		case WireVarint:
-			u, err = p.DecodeVarint()
-			if err != nil {
-				fmt.Printf("%3d: t=%3d varint err %v\n", index, tag, err)
-				break out
-			}
-			fmt.Printf("%3d: t=%3d varint %d\n", index, tag, u)
-
-		case WireStartGroup:
-			fmt.Printf("%3d: t=%3d start\n", index, tag)
-			depth++
-
-		case WireEndGroup:
-			depth--
-			fmt.Printf("%3d: t=%3d end\n", index, tag)
-		}
-	}
-
-	if depth != 0 {
-		fmt.Printf("%3d: start-end not balanced %d\n", p.index, depth)
-	}
-	fmt.Printf("\n")
-
-	p.buf = obuf
-	p.index = index
-}
-
-// SetDefaults sets unset protocol buffer fields to their default values.
-// It only modifies fields that are both unset and have defined defaults.
-// It recursively sets default values in any non-nil sub-messages.
-func SetDefaults(pb Message) {
-	setDefaults(reflect.ValueOf(pb), true, false)
-}
-
-// v is a pointer to a struct.
-func setDefaults(v reflect.Value, recur, zeros bool) {
-	v = v.Elem()
-
-	defaultMu.RLock()
-	dm, ok := defaults[v.Type()]
-	defaultMu.RUnlock()
-	if !ok {
-		dm = buildDefaultMessage(v.Type())
-		defaultMu.Lock()
-		defaults[v.Type()] = dm
-		defaultMu.Unlock()
-	}
-
-	for _, sf := range dm.scalars {
-		f := v.Field(sf.index)
-		if !f.IsNil() {
-			// field already set
-			continue
-		}
-		dv := sf.value
-		if dv == nil && !zeros {
-			// no explicit default, and don't want to set zeros
-			continue
-		}
-		fptr := f.Addr().Interface() // **T
-		// TODO: Consider batching the allocations we do here.
-		switch sf.kind {
-		case reflect.Bool:
-			b := new(bool)
-			if dv != nil {
-				*b = dv.(bool)
-			}
-			*(fptr.(**bool)) = b
-		case reflect.Float32:
-			f := new(float32)
-			if dv != nil {
-				*f = dv.(float32)
-			}
-			*(fptr.(**float32)) = f
-		case reflect.Float64:
-			f := new(float64)
-			if dv != nil {
-				*f = dv.(float64)
-			}
-			*(fptr.(**float64)) = f
-		case reflect.Int32:
-			// might be an enum
-			if ft := f.Type(); ft != int32PtrType {
-				// enum
-				f.Set(reflect.New(ft.Elem()))
-				if dv != nil {
-					f.Elem().SetInt(int64(dv.(int32)))
-				}
-			} else {
-				// int32 field
-				i := new(int32)
-				if dv != nil {
-					*i = dv.(int32)
-				}
-				*(fptr.(**int32)) = i
-			}
-		case reflect.Int64:
-			i := new(int64)
-			if dv != nil {
-				*i = dv.(int64)
-			}
-			*(fptr.(**int64)) = i
-		case reflect.String:
-			s := new(string)
-			if dv != nil {
-				*s = dv.(string)
-			}
-			*(fptr.(**string)) = s
-		case reflect.Uint8:
-			// exceptional case: []byte
-			var b []byte
-			if dv != nil {
-				db := dv.([]byte)
-				b = make([]byte, len(db))
-				copy(b, db)
-			} else {
-				b = []byte{}
-			}
-			*(fptr.(*[]byte)) = b
-		case reflect.Uint32:
-			u := new(uint32)
-			if dv != nil {
-				*u = dv.(uint32)
-			}
-			*(fptr.(**uint32)) = u
-		case reflect.Uint64:
-			u := new(uint64)
-			if dv != nil {
-				*u = dv.(uint64)
-			}
-			*(fptr.(**uint64)) = u
-		default:
-			log.Printf("proto: can't set default for field %v (sf.kind=%v)", f, sf.kind)
-		}
-	}
-
-	for _, ni := range dm.nested {
-		f := v.Field(ni)
-		// f is *T or []*T or map[T]*T
-		switch f.Kind() {
-		case reflect.Ptr:
-			if f.IsNil() {
-				continue
-			}
-			setDefaults(f, recur, zeros)
-
-		case reflect.Slice:
-			for i := 0; i < f.Len(); i++ {
-				e := f.Index(i)
-				if e.IsNil() {
-					continue
-				}
-				setDefaults(e, recur, zeros)
-			}
-
-		case reflect.Map:
-			for _, k := range f.MapKeys() {
-				e := f.MapIndex(k)
-				if e.IsNil() {
-					continue
-				}
-				setDefaults(e, recur, zeros)
-			}
-		}
-	}
-}
-
-var (
-	// defaults maps a protocol buffer struct type to a slice of the fields,
-	// with its scalar fields set to their proto-declared non-zero default values.
-	defaultMu sync.RWMutex
-	defaults  = make(map[reflect.Type]defaultMessage)
-
-	int32PtrType = reflect.TypeOf((*int32)(nil))
-)
-
-// defaultMessage represents information about the default values of a message.
-type defaultMessage struct {
-	scalars []scalarField
-	nested  []int // struct field index of nested messages
-}
-
-type scalarField struct {
-	index int          // struct field index
-	kind  reflect.Kind // element type (the T in *T or []T)
-	value interface{}  // the proto-declared default value, or nil
-}
-
-// t is a struct type.
-func buildDefaultMessage(t reflect.Type) (dm defaultMessage) {
-	sprop := GetProperties(t)
-	for _, prop := range sprop.Prop {
-		fi, ok := sprop.decoderTags.get(prop.Tag)
-		if !ok {
-			// XXX_unrecognized
-			continue
-		}
-		ft := t.Field(fi).Type
-
-		sf, nested, err := fieldDefault(ft, prop)
-		switch {
-		case err != nil:
-			log.Print(err)
-		case nested:
-			dm.nested = append(dm.nested, fi)
-		case sf != nil:
-			sf.index = fi
-			dm.scalars = append(dm.scalars, *sf)
-		}
-	}
-
-	return dm
-}
-
-// fieldDefault returns the scalarField for field type ft.
-// sf will be nil if the field can not have a default.
-// nestedMessage will be true if this is a nested message.
-// Note that sf.index is not set on return.
-func fieldDefault(ft reflect.Type, prop *Properties) (sf *scalarField, nestedMessage bool, err error) {
-	var canHaveDefault bool
-	switch ft.Kind() {
-	case reflect.Ptr:
-		if ft.Elem().Kind() == reflect.Struct {
-			nestedMessage = true
-		} else {
-			canHaveDefault = true // proto2 scalar field
-		}
-
-	case reflect.Slice:
-		switch ft.Elem().Kind() {
-		case reflect.Ptr:
-			nestedMessage = true // repeated message
-		case reflect.Uint8:
-			canHaveDefault = true // bytes field
-		}
-
-	case reflect.Map:
-		if ft.Elem().Kind() == reflect.Ptr {
-			nestedMessage = true // map with message values
-		}
-	}
-
-	if !canHaveDefault {
-		if nestedMessage {
-			return nil, true, nil
-		}
-		return nil, false, nil
-	}
-
-	// We now know that ft is a pointer or slice.
-	sf = &scalarField{kind: ft.Elem().Kind()}
-
-	// scalar fields without defaults
-	if !prop.HasDefault {
-		return sf, false, nil
-	}
-
-	// a scalar field: either *T or []byte
-	switch ft.Elem().Kind() {
-	case reflect.Bool:
-		x, err := strconv.ParseBool(prop.Default)
-		if err != nil {
-			return nil, false, fmt.Errorf("proto: bad default bool %q: %v", prop.Default, err)
-		}
-		sf.value = x
-	case reflect.Float32:
-		x, err := strconv.ParseFloat(prop.Default, 32)
-		if err != nil {
-			return nil, false, fmt.Errorf("proto: bad default float32 %q: %v", prop.Default, err)
-		}
-		sf.value = float32(x)
-	case reflect.Float64:
-		x, err := strconv.ParseFloat(prop.Default, 64)
-		if err != nil {
-			return nil, false, fmt.Errorf("proto: bad default float64 %q: %v", prop.Default, err)
-		}
-		sf.value = x
-	case reflect.Int32:
-		x, err := strconv.ParseInt(prop.Default, 10, 32)
-		if err != nil {
-			return nil, false, fmt.Errorf("proto: bad default int32 %q: %v", prop.Default, err)
-		}
-		sf.value = int32(x)
-	case reflect.Int64:
-		x, err := strconv.ParseInt(prop.Default, 10, 64)
-		if err != nil {
-			return nil, false, fmt.Errorf("proto: bad default int64 %q: %v", prop.Default, err)
-		}
-		sf.value = x
-	case reflect.String:
-		sf.value = prop.Default
-	case reflect.Uint8:
-		// []byte (not *uint8)
-		sf.value = []byte(prop.Default)
-	case reflect.Uint32:
-		x, err := strconv.ParseUint(prop.Default, 10, 32)
-		if err != nil {
-			return nil, false, fmt.Errorf("proto: bad default uint32 %q: %v", prop.Default, err)
-		}
-		sf.value = uint32(x)
-	case reflect.Uint64:
-		x, err := strconv.ParseUint(prop.Default, 10, 64)
-		if err != nil {
-			return nil, false, fmt.Errorf("proto: bad default uint64 %q: %v", prop.Default, err)
-		}
-		sf.value = x
-	default:
-		return nil, false, fmt.Errorf("proto: unhandled def kind %v", ft.Elem().Kind())
-	}
-
-	return sf, false, nil
-}
-
-// mapKeys returns a sort.Interface to be used for sorting the map keys.
-// Map fields may have key types of non-float scalars, strings and enums.
-func mapKeys(vs []reflect.Value) sort.Interface {
-	s := mapKeySorter{vs: vs}
-
-	// Type specialization per https://developers.google.com/protocol-buffers/docs/proto#maps.
-	if len(vs) == 0 {
-		return s
-	}
-	switch vs[0].Kind() {
-	case reflect.Int32, reflect.Int64:
-		s.less = func(a, b reflect.Value) bool { return a.Int() < b.Int() }
-	case reflect.Uint32, reflect.Uint64:
-		s.less = func(a, b reflect.Value) bool { return a.Uint() < b.Uint() }
-	case reflect.Bool:
-		s.less = func(a, b reflect.Value) bool { return !a.Bool() && b.Bool() } // false < true
-	case reflect.String:
-		s.less = func(a, b reflect.Value) bool { return a.String() < b.String() }
-	default:
-		panic(fmt.Sprintf("unsupported map key type: %v", vs[0].Kind()))
-	}
-
-	return s
-}
-
-type mapKeySorter struct {
-	vs   []reflect.Value
-	less func(a, b reflect.Value) bool
-}
-
-func (s mapKeySorter) Len() int      { return len(s.vs) }
-func (s mapKeySorter) Swap(i, j int) { s.vs[i], s.vs[j] = s.vs[j], s.vs[i] }
-func (s mapKeySorter) Less(i, j int) bool {
-	return s.less(s.vs[i], s.vs[j])
-}
-
-// isProto3Zero reports whether v is a zero proto3 value.
-func isProto3Zero(v reflect.Value) bool {
-	switch v.Kind() {
-	case reflect.Bool:
-		return !v.Bool()
-	case reflect.Int32, reflect.Int64:
-		return v.Int() == 0
-	case reflect.Uint32, reflect.Uint64:
-		return v.Uint() == 0
-	case reflect.Float32, reflect.Float64:
-		return v.Float() == 0
-	case reflect.String:
-		return v.String() == ""
-	}
-	return false
-}
-
-const (
-	// ProtoPackageIsVersion3 is referenced from generated protocol buffer files
-	// to assert that that code is compatible with this version of the proto package.
-	ProtoPackageIsVersion3 = true
-
-	// ProtoPackageIsVersion2 is referenced from generated protocol buffer files
-	// to assert that that code is compatible with this version of the proto package.
-	ProtoPackageIsVersion2 = true
-
-	// ProtoPackageIsVersion1 is referenced from generated protocol buffer files
-	// to assert that that code is compatible with this version of the proto package.
-	ProtoPackageIsVersion1 = true
-)
-
-// InternalMessageInfo is a type used internally by generated .pb.go files.
-// This type is not intended to be used by non-generated code.
-// This type is not subject to any compatibility guarantee.
-type InternalMessageInfo struct {
-	marshal   *marshalInfo
-	unmarshal *unmarshalInfo
-	merge     *mergeInfo
-	discard   *discardInfo
-}

vendor/github.com/golang/protobuf/proto/message_set.go

@@ -1,181 +0,0 @@
-// Go support for Protocol Buffers - Google's data interchange format
-//
-// Copyright 2010 The Go Authors.  All rights reserved.
-// https://github.com/golang/protobuf
-//
-// Redistribution and use in source and binary forms, with or without
-// modification, are permitted provided that the following conditions are
-// met:
-//
-//     * Redistributions of source code must retain the above copyright
-// notice, this list of conditions and the following disclaimer.
-//     * Redistributions in binary form must reproduce the above
-// copyright notice, this list of conditions and the following disclaimer
-// in the documentation and/or other materials provided with the
-// distribution.
-//     * Neither the name of Google Inc. nor the names of its
-// contributors may be used to endorse or promote products derived from
-// this software without specific prior written permission.
-//
-// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-package proto
-
-/*
- * Support for message sets.
- */
-
-import (
-	"errors"
-)
-
-// errNoMessageTypeID occurs when a protocol buffer does not have a message type ID.
-// A message type ID is required for storing a protocol buffer in a message set.
-var errNoMessageTypeID = errors.New("proto does not have a message type ID")
-
-// The first two types (_MessageSet_Item and messageSet)
-// model what the protocol compiler produces for the following protocol message:
-//   message MessageSet {
-//     repeated group Item = 1 {
-//       required int32 type_id = 2;
-//       required string message = 3;
-//     };
-//   }
-// That is the MessageSet wire format. We can't use a proto to generate these
-// because that would introduce a circular dependency between it and this package.
-
-type _MessageSet_Item struct {
-	TypeId  *int32 `protobuf:"varint,2,req,name=type_id"`
-	Message []byte `protobuf:"bytes,3,req,name=message"`
-}
-
-type messageSet struct {
-	Item             []*_MessageSet_Item `protobuf:"group,1,rep"`
-	XXX_unrecognized []byte
-	// TODO: caching?
-}
-
-// Make sure messageSet is a Message.
-var _ Message = (*messageSet)(nil)
-
-// messageTypeIder is an interface satisfied by a protocol buffer type
-// that may be stored in a MessageSet.
-type messageTypeIder interface {
-	MessageTypeId() int32
-}
-
-func (ms *messageSet) find(pb Message) *_MessageSet_Item {
-	mti, ok := pb.(messageTypeIder)
-	if !ok {
-		return nil
-	}
-	id := mti.MessageTypeId()
-	for _, item := range ms.Item {
-		if *item.TypeId == id {
-			return item
-		}
-	}
-	return nil
-}
-
-func (ms *messageSet) Has(pb Message) bool {
-	return ms.find(pb) != nil
-}
-
-func (ms *messageSet) Unmarshal(pb Message) error {
-	if item := ms.find(pb); item != nil {
-		return Unmarshal(item.Message, pb)
-	}
-	if _, ok := pb.(messageTypeIder); !ok {
-		return errNoMessageTypeID
-	}
-	return nil // TODO: return error instead?
-}
-
-func (ms *messageSet) Marshal(pb Message) error {
-	msg, err := Marshal(pb)
-	if err != nil {
-		return err
-	}
-	if item := ms.find(pb); item != nil {
-		// reuse existing item
-		item.Message = msg
-		return nil
-	}
-
-	mti, ok := pb.(messageTypeIder)
-	if !ok {
-		return errNoMessageTypeID
-	}
-
-	mtid := mti.MessageTypeId()
-	ms.Item = append(ms.Item, &_MessageSet_Item{
-		TypeId:  &mtid,
-		Message: msg,
-	})
-	return nil
-}
-
-func (ms *messageSet) Reset()         { *ms = messageSet{} }
-func (ms *messageSet) String() string { return CompactTextString(ms) }
-func (*messageSet) ProtoMessage()     {}
-
-// Support for the message_set_wire_format message option.
-
-func skipVarint(buf []byte) []byte {
-	i := 0
-	for ; buf[i]&0x80 != 0; i++ {
-	}
-	return buf[i+1:]
-}
-
-// unmarshalMessageSet decodes the extension map encoded in buf in the message set wire format.
-// It is called by Unmarshal methods on protocol buffer messages with the message_set_wire_format option.
-func unmarshalMessageSet(buf []byte, exts interface{}) error {
-	var m map[int32]Extension
-	switch exts := exts.(type) {
-	case *XXX_InternalExtensions:
-		m = exts.extensionsWrite()
-	case map[int32]Extension:
-		m = exts
-	default:
-		return errors.New("proto: not an extension map")
-	}
-
-	ms := new(messageSet)
-	if err := Unmarshal(buf, ms); err != nil {
-		return err
-	}
-	for _, item := range ms.Item {
-		id := *item.TypeId
-		msg := item.Message
-
-		// Restore wire type and field number varint, plus length varint.
-		// Be careful to preserve duplicate items.
-		b := EncodeVarint(uint64(id)<<3 | WireBytes)
-		if ext, ok := m[id]; ok {
-			// Existing data; rip off the tag and length varint
-			// so we join the new data correctly.
-			// We can assume that ext.enc is set because we are unmarshaling.
-			o := ext.enc[len(b):]   // skip wire type and field number
-			_, n := DecodeVarint(o) // calculate length of length varint
-			o = o[n:]               // skip length varint
-			msg = append(o, msg...) // join old data and new data
-		}
-		b = append(b, EncodeVarint(uint64(len(msg)))...)
-		b = append(b, msg...)
-
-		m[id] = Extension{enc: b}
-	}
-	return nil
-}

vendor/github.com/golang/protobuf/proto/pointer_reflect.go

@@ -1,360 +0,0 @@
-// Go support for Protocol Buffers - Google's data interchange format
-//
-// Copyright 2012 The Go Authors.  All rights reserved.
-// https://github.com/golang/protobuf
-//
-// Redistribution and use in source and binary forms, with or without
-// modification, are permitted provided that the following conditions are
-// met:
-//
-//     * Redistributions of source code must retain the above copyright
-// notice, this list of conditions and the following disclaimer.
-//     * Redistributions in binary form must reproduce the above
-// copyright notice, this list of conditions and the following disclaimer
-// in the documentation and/or other materials provided with the
-// distribution.
-//     * Neither the name of Google Inc. nor the names of its
-// contributors may be used to endorse or promote products derived from
-// this software without specific prior written permission.
-//
-// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-// +build purego appengine js
-
-// This file contains an implementation of proto field accesses using package reflect.
-// It is slower than the code in pointer_unsafe.go but it avoids package unsafe and can
-// be used on App Engine.
-
-package proto
-
-import (
-	"reflect"
-	"sync"
-)
-
-const unsafeAllowed = false
-
-// A field identifies a field in a struct, accessible from a pointer.
-// In this implementation, a field is identified by the sequence of field indices
-// passed to reflect's FieldByIndex.
-type field []int
-
-// toField returns a field equivalent to the given reflect field.
-func toField(f *reflect.StructField) field {
-	return f.Index
-}
-
-// invalidField is an invalid field identifier.
-var invalidField = field(nil)
-
-// zeroField is a noop when calling pointer.offset.
-var zeroField = field([]int{})
-
-// IsValid reports whether the field identifier is valid.
-func (f field) IsValid() bool { return f != nil }
-
-// The pointer type is for the table-driven decoder.
-// The implementation here uses a reflect.Value of pointer type to
-// create a generic pointer. In pointer_unsafe.go we use unsafe
-// instead of reflect to implement the same (but faster) interface.
-type pointer struct {
-	v reflect.Value
-}
-
-// toPointer converts an interface of pointer type to a pointer
-// that points to the same target.
-func toPointer(i *Message) pointer {
-	return pointer{v: reflect.ValueOf(*i)}
-}
-
-// toAddrPointer converts an interface to a pointer that points to
-// the interface data.
-func toAddrPointer(i *interface{}, isptr, deref bool) pointer {
-	v := reflect.ValueOf(*i)
-	u := reflect.New(v.Type())
-	u.Elem().Set(v)
-	if deref {
-		u = u.Elem()
-	}
-	return pointer{v: u}
-}
-
-// valToPointer converts v to a pointer.  v must be of pointer type.
-func valToPointer(v reflect.Value) pointer {
-	return pointer{v: v}
-}
-
-// offset converts from a pointer to a structure to a pointer to
-// one of its fields.
-func (p pointer) offset(f field) pointer {
-	return pointer{v: p.v.Elem().FieldByIndex(f).Addr()}
-}
-
-func (p pointer) isNil() bool {
-	return p.v.IsNil()
-}
-
-// grow updates the slice s in place to make it one element longer.
-// s must be addressable.
-// Returns the (addressable) new element.
-func grow(s reflect.Value) reflect.Value {
-	n, m := s.Len(), s.Cap()
-	if n < m {
-		s.SetLen(n + 1)
-	} else {
-		s.Set(reflect.Append(s, reflect.Zero(s.Type().Elem())))
-	}
-	return s.Index(n)
-}
-
-func (p pointer) toInt64() *int64 {
-	return p.v.Interface().(*int64)
-}
-func (p pointer) toInt64Ptr() **int64 {
-	return p.v.Interface().(**int64)
-}
-func (p pointer) toInt64Slice() *[]int64 {
-	return p.v.Interface().(*[]int64)
-}
-
-var int32ptr = reflect.TypeOf((*int32)(nil))
-
-func (p pointer) toInt32() *int32 {
-	return p.v.Convert(int32ptr).Interface().(*int32)
-}
-
-// The toInt32Ptr/Slice methods don't work because of enums.
-// Instead, we must use set/get methods for the int32ptr/slice case.
-/*
-	func (p pointer) toInt32Ptr() **int32 {
-		return p.v.Interface().(**int32)
-}
-	func (p pointer) toInt32Slice() *[]int32 {
-		return p.v.Interface().(*[]int32)
-}
-*/
-func (p pointer) getInt32Ptr() *int32 {
-	if p.v.Type().Elem().Elem() == reflect.TypeOf(int32(0)) {
-		// raw int32 type
-		return p.v.Elem().Interface().(*int32)
-	}
-	// an enum
-	return p.v.Elem().Convert(int32PtrType).Interface().(*int32)
-}
-func (p pointer) setInt32Ptr(v int32) {
-	// Allocate value in a *int32. Possibly convert that to a *enum.
-	// Then assign it to a **int32 or **enum.
-	// Note: we can convert *int32 to *enum, but we can't convert
-	// **int32 to **enum!
-	p.v.Elem().Set(reflect.ValueOf(&v).Convert(p.v.Type().Elem()))
-}
-
-// getInt32Slice copies []int32 from p as a new slice.
-// This behavior differs from the implementation in pointer_unsafe.go.
-func (p pointer) getInt32Slice() []int32 {
-	if p.v.Type().Elem().Elem() == reflect.TypeOf(int32(0)) {
-		// raw int32 type
-		return p.v.Elem().Interface().([]int32)
-	}
-	// an enum
-	// Allocate a []int32, then assign []enum's values into it.
-	// Note: we can't convert []enum to []int32.
-	slice := p.v.Elem()
-	s := make([]int32, slice.Len())
-	for i := 0; i < slice.Len(); i++ {
-		s[i] = int32(slice.Index(i).Int())
-	}
-	return s
-}
-
-// setInt32Slice copies []int32 into p as a new slice.
-// This behavior differs from the implementation in pointer_unsafe.go.
-func (p pointer) setInt32Slice(v []int32) {
-	if p.v.Type().Elem().Elem() == reflect.TypeOf(int32(0)) {
-		// raw int32 type
-		p.v.Elem().Set(reflect.ValueOf(v))
-		return
-	}
-	// an enum
-	// Allocate a []enum, then assign []int32's values into it.
-	// Note: we can't convert []enum to []int32.
-	slice := reflect.MakeSlice(p.v.Type().Elem(), len(v), cap(v))
-	for i, x := range v {
-		slice.Index(i).SetInt(int64(x))
-	}
-	p.v.Elem().Set(slice)
-}
-func (p pointer) appendInt32Slice(v int32) {
-	grow(p.v.Elem()).SetInt(int64(v))
-}
-
-func (p pointer) toUint64() *uint64 {
-	return p.v.Interface().(*uint64)
-}
-func (p pointer) toUint64Ptr() **uint64 {
-	return p.v.Interface().(**uint64)
-}
-func (p pointer) toUint64Slice() *[]uint64 {
-	return p.v.Interface().(*[]uint64)
-}
-func (p pointer) toUint32() *uint32 {
-	return p.v.Interface().(*uint32)
-}
-func (p pointer) toUint32Ptr() **uint32 {
-	return p.v.Interface().(**uint32)
-}
-func (p pointer) toUint32Slice() *[]uint32 {
-	return p.v.Interface().(*[]uint32)
-}
-func (p pointer) toBool() *bool {
-	return p.v.Interface().(*bool)
-}
-func (p pointer) toBoolPtr() **bool {
-	return p.v.Interface().(**bool)
-}
-func (p pointer) toBoolSlice() *[]bool {
-	return p.v.Interface().(*[]bool)
-}
-func (p pointer) toFloat64() *float64 {
-	return p.v.Interface().(*float64)
-}
-func (p pointer) toFloat64Ptr() **float64 {
-	return p.v.Interface().(**float64)
-}
-func (p pointer) toFloat64Slice() *[]float64 {
-	return p.v.Interface().(*[]float64)
-}
-func (p pointer) toFloat32() *float32 {
-	return p.v.Interface().(*float32)
-}
-func (p pointer) toFloat32Ptr() **float32 {
-	return p.v.Interface().(**float32)
-}
-func (p pointer) toFloat32Slice() *[]float32 {
-	return p.v.Interface().(*[]float32)
-}
-func (p pointer) toString() *string {
-	return p.v.Interface().(*string)
-}
-func (p pointer) toStringPtr() **string {
-	return p.v.Interface().(**string)
-}
-func (p pointer) toStringSlice() *[]string {
-	return p.v.Interface().(*[]string)
-}
-func (p pointer) toBytes() *[]byte {
-	return p.v.Interface().(*[]byte)
-}
-func (p pointer) toBytesSlice() *[][]byte {
-	return p.v.Interface().(*[][]byte)
-}
-func (p pointer) toExtensions() *XXX_InternalExtensions {
-	return p.v.Interface().(*XXX_InternalExtensions)
-}
-func (p pointer) toOldExtensions() *map[int32]Extension {
-	return p.v.Interface().(*map[int32]Extension)
-}
-func (p pointer) getPointer() pointer {
-	return pointer{v: p.v.Elem()}
-}
-func (p pointer) setPointer(q pointer) {
-	p.v.Elem().Set(q.v)
-}
-func (p pointer) appendPointer(q pointer) {
-	grow(p.v.Elem()).Set(q.v)
-}
-
-// getPointerSlice copies []*T from p as a new []pointer.
-// This behavior differs from the implementation in pointer_unsafe.go.
-func (p pointer) getPointerSlice() []pointer {
-	if p.v.IsNil() {
-		return nil
-	}
-	n := p.v.Elem().Len()
-	s := make([]pointer, n)
-	for i := 0; i < n; i++ {
-		s[i] = pointer{v: p.v.Elem().Index(i)}
-	}
-	return s
-}
-
-// setPointerSlice copies []pointer into p as a new []*T.
-// This behavior differs from the implementation in pointer_unsafe.go.
-func (p pointer) setPointerSlice(v []pointer) {
-	if v == nil {
-		p.v.Elem().Set(reflect.New(p.v.Elem().Type()).Elem())
-		return
-	}
-	s := reflect.MakeSlice(p.v.Elem().Type(), 0, len(v))
-	for _, p := range v {
-		s = reflect.Append(s, p.v)
-	}
-	p.v.Elem().Set(s)
-}
-
-// getInterfacePointer returns a pointer that points to the
-// interface data of the interface pointed by p.
-func (p pointer) getInterfacePointer() pointer {
-	if p.v.Elem().IsNil() {
-		return pointer{v: p.v.Elem()}
-	}
-	return pointer{v: p.v.Elem().Elem().Elem().Field(0).Addr()} // *interface -> interface -> *struct -> struct
-}
-
-func (p pointer) asPointerTo(t reflect.Type) reflect.Value {
-	// TODO: check that p.v.Type().Elem() == t?
-	return p.v
-}
-
-func atomicLoadUnmarshalInfo(p **unmarshalInfo) *unmarshalInfo {
-	atomicLock.Lock()
-	defer atomicLock.Unlock()
-	return *p
-}
-func atomicStoreUnmarshalInfo(p **unmarshalInfo, v *unmarshalInfo) {
-	atomicLock.Lock()
-	defer atomicLock.Unlock()
-	*p = v
-}
-func atomicLoadMarshalInfo(p **marshalInfo) *marshalInfo {
-	atomicLock.Lock()
-	defer atomicLock.Unlock()
-	return *p
-}
-func atomicStoreMarshalInfo(p **marshalInfo, v *marshalInfo) {
-	atomicLock.Lock()
-	defer atomicLock.Unlock()
-	*p = v
-}
-func atomicLoadMergeInfo(p **mergeInfo) *mergeInfo {
-	atomicLock.Lock()
-	defer atomicLock.Unlock()
-	return *p
-}
-func atomicStoreMergeInfo(p **mergeInfo, v *mergeInfo) {
-	atomicLock.Lock()
-	defer atomicLock.Unlock()
-	*p = v
-}
-func atomicLoadDiscardInfo(p **discardInfo) *discardInfo {
-	atomicLock.Lock()
-	defer atomicLock.Unlock()
-	return *p
-}
-func atomicStoreDiscardInfo(p **discardInfo, v *discardInfo) {
-	atomicLock.Lock()
-	defer atomicLock.Unlock()
-	*p = v
-}
-
-var atomicLock sync.Mutex

vendor/github.com/golang/protobuf/proto/pointer_unsafe.go

@@ -1,313 +0,0 @@
-// Go support for Protocol Buffers - Google's data interchange format
-//
-// Copyright 2012 The Go Authors.  All rights reserved.
-// https://github.com/golang/protobuf
-//
-// Redistribution and use in source and binary forms, with or without
-// modification, are permitted provided that the following conditions are
-// met:
-//
-//     * Redistributions of source code must retain the above copyright
-// notice, this list of conditions and the following disclaimer.
-//     * Redistributions in binary form must reproduce the above
-// copyright notice, this list of conditions and the following disclaimer
-// in the documentation and/or other materials provided with the
-// distribution.
-//     * Neither the name of Google Inc. nor the names of its
-// contributors may be used to endorse or promote products derived from
-// this software without specific prior written permission.
-//
-// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-// +build !purego,!appengine,!js
-
-// This file contains the implementation of the proto field accesses using package unsafe.
-
-package proto
-
-import (
-	"reflect"
-	"sync/atomic"
-	"unsafe"
-)
-
-const unsafeAllowed = true
-
-// A field identifies a field in a struct, accessible from a pointer.
-// In this implementation, a field is identified by its byte offset from the start of the struct.
-type field uintptr
-
-// toField returns a field equivalent to the given reflect field.
-func toField(f *reflect.StructField) field {
-	return field(f.Offset)
-}
-
-// invalidField is an invalid field identifier.
-const invalidField = ^field(0)
-
-// zeroField is a noop when calling pointer.offset.
-const zeroField = field(0)
-
-// IsValid reports whether the field identifier is valid.
-func (f field) IsValid() bool {
-	return f != invalidField
-}
-
-// The pointer type below is for the new table-driven encoder/decoder.
-// The implementation here uses unsafe.Pointer to create a generic pointer.
-// In pointer_reflect.go we use reflect instead of unsafe to implement
-// the same (but slower) interface.
-type pointer struct {
-	p unsafe.Pointer
-}
-
-// size of pointer
-var ptrSize = unsafe.Sizeof(uintptr(0))
-
-// toPointer converts an interface of pointer type to a pointer
-// that points to the same target.
-func toPointer(i *Message) pointer {
-	// Super-tricky - read pointer out of data word of interface value.
-	// Saves ~25ns over the equivalent:
-	// return valToPointer(reflect.ValueOf(*i))
-	return pointer{p: (*[2]unsafe.Pointer)(unsafe.Pointer(i))[1]}
-}
-
-// toAddrPointer converts an interface to a pointer that points to
-// the interface data.
-func toAddrPointer(i *interface{}, isptr, deref bool) (p pointer) {
-	// Super-tricky - read or get the address of data word of interface value.
-	if isptr {
-		// The interface is of pointer type, thus it is a direct interface.
-		// The data word is the pointer data itself. We take its address.
-		p = pointer{p: unsafe.Pointer(uintptr(unsafe.Pointer(i)) + ptrSize)}
-	} else {
-		// The interface is not of pointer type. The data word is the pointer
-		// to the data.
-		p = pointer{p: (*[2]unsafe.Pointer)(unsafe.Pointer(i))[1]}
-	}
-	if deref {
-		p.p = *(*unsafe.Pointer)(p.p)
-	}
-	return p
-}
-
-// valToPointer converts v to a pointer. v must be of pointer type.
-func valToPointer(v reflect.Value) pointer {
-	return pointer{p: unsafe.Pointer(v.Pointer())}
-}
-
-// offset converts from a pointer to a structure to a pointer to
-// one of its fields.
-func (p pointer) offset(f field) pointer {
-	// For safety, we should panic if !f.IsValid, however calling panic causes
-	// this to no longer be inlineable, which is a serious performance cost.
-	/*
-		if !f.IsValid() {
-			panic("invalid field")
-		}
-	*/
-	return pointer{p: unsafe.Pointer(uintptr(p.p) + uintptr(f))}
-}
-
-func (p pointer) isNil() bool {
-	return p.p == nil
-}
-
-func (p pointer) toInt64() *int64 {
-	return (*int64)(p.p)
-}
-func (p pointer) toInt64Ptr() **int64 {
-	return (**int64)(p.p)
-}
-func (p pointer) toInt64Slice() *[]int64 {
-	return (*[]int64)(p.p)
-}
-func (p pointer) toInt32() *int32 {
-	return (*int32)(p.p)
-}
-
-// See pointer_reflect.go for why toInt32Ptr/Slice doesn't exist.
-/*
-	func (p pointer) toInt32Ptr() **int32 {
-		return (**int32)(p.p)
-	}
-	func (p pointer) toInt32Slice() *[]int32 {
-		return (*[]int32)(p.p)
-	}
-*/
-func (p pointer) getInt32Ptr() *int32 {
-	return *(**int32)(p.p)
-}
-func (p pointer) setInt32Ptr(v int32) {
-	*(**int32)(p.p) = &v
-}
-
-// getInt32Slice loads a []int32 from p.
-// The value returned is aliased with the original slice.
-// This behavior differs from the implementation in pointer_reflect.go.
-func (p pointer) getInt32Slice() []int32 {
-	return *(*[]int32)(p.p)
-}
-
-// setInt32Slice stores a []int32 to p.
-// The value set is aliased with the input slice.
-// This behavior differs from the implementation in pointer_reflect.go.
-func (p pointer) setInt32Slice(v []int32) {
-	*(*[]int32)(p.p) = v
-}
-
-// TODO: Can we get rid of appendInt32Slice and use setInt32Slice instead?
-func (p pointer) appendInt32Slice(v int32) {
-	s := (*[]int32)(p.p)
-	*s = append(*s, v)
-}
-
-func (p pointer) toUint64() *uint64 {
-	return (*uint64)(p.p)
-}
-func (p pointer) toUint64Ptr() **uint64 {
-	return (**uint64)(p.p)
-}
-func (p pointer) toUint64Slice() *[]uint64 {
-	return (*[]uint64)(p.p)
-}
-func (p pointer) toUint32() *uint32 {
-	return (*uint32)(p.p)
-}
-func (p pointer) toUint32Ptr() **uint32 {
-	return (**uint32)(p.p)
-}
-func (p pointer) toUint32Slice() *[]uint32 {
-	return (*[]uint32)(p.p)
-}
-func (p pointer) toBool() *bool {
-	return (*bool)(p.p)
-}
-func (p pointer) toBoolPtr() **bool {
-	return (**bool)(p.p)
-}
-func (p pointer) toBoolSlice() *[]bool {
-	return (*[]bool)(p.p)
-}
-func (p pointer) toFloat64() *float64 {
-	return (*float64)(p.p)
-}
-func (p pointer) toFloat64Ptr() **float64 {
-	return (**float64)(p.p)
-}
-func (p pointer) toFloat64Slice() *[]float64 {
-	return (*[]float64)(p.p)
-}
-func (p pointer) toFloat32() *float32 {
-	return (*float32)(p.p)
-}
-func (p pointer) toFloat32Ptr() **float32 {
-	return (**float32)(p.p)
-}
-func (p pointer) toFloat32Slice() *[]float32 {
-	return (*[]float32)(p.p)
-}
-func (p pointer) toString() *string {
-	return (*string)(p.p)
-}
-func (p pointer) toStringPtr() **string {
-	return (**string)(p.p)
-}
-func (p pointer) toStringSlice() *[]string {
-	return (*[]string)(p.p)
-}
-func (p pointer) toBytes() *[]byte {
-	return (*[]byte)(p.p)
-}
-func (p pointer) toBytesSlice() *[][]byte {
-	return (*[][]byte)(p.p)
-}
-func (p pointer) toExtensions() *XXX_InternalExtensions {
-	return (*XXX_InternalExtensions)(p.p)
-}
-func (p pointer) toOldExtensions() *map[int32]Extension {
-	return (*map[int32]Extension)(p.p)
-}
-
-// getPointerSlice loads []*T from p as a []pointer.
-// The value returned is aliased with the original slice.
-// This behavior differs from the implementation in pointer_reflect.go.
-func (p pointer) getPointerSlice() []pointer {
-	// Super-tricky - p should point to a []*T where T is a
-	// message type. We load it as []pointer.
-	return *(*[]pointer)(p.p)
-}
-
-// setPointerSlice stores []pointer into p as a []*T.
-// The value set is aliased with the input slice.
-// This behavior differs from the implementation in pointer_reflect.go.
-func (p pointer) setPointerSlice(v []pointer) {
-	// Super-tricky - p should point to a []*T where T is a
-	// message type. We store it as []pointer.
-	*(*[]pointer)(p.p) = v
-}
-
-// getPointer loads the pointer at p and returns it.
-func (p pointer) getPointer() pointer {
-	return pointer{p: *(*unsafe.Pointer)(p.p)}
-}
-
-// setPointer stores the pointer q at p.
-func (p pointer) setPointer(q pointer) {
-	*(*unsafe.Pointer)(p.p) = q.p
-}
-
-// append q to the slice pointed to by p.
-func (p pointer) appendPointer(q pointer) {
-	s := (*[]unsafe.Pointer)(p.p)
-	*s = append(*s, q.p)
-}
-
-// getInterfacePointer returns a pointer that points to the
-// interface data of the interface pointed by p.
-func (p pointer) getInterfacePointer() pointer {
-	// Super-tricky - read pointer out of data word of interface value.
-	return pointer{p: (*(*[2]unsafe.Pointer)(p.p))[1]}
-}
-
-// asPointerTo returns a reflect.Value that is a pointer to an
-// object of type t stored at p.
-func (p pointer) asPointerTo(t reflect.Type) reflect.Value {
-	return reflect.NewAt(t, p.p)
-}
-
-func atomicLoadUnmarshalInfo(p **unmarshalInfo) *unmarshalInfo {
-	return (*unmarshalInfo)(atomic.LoadPointer((*unsafe.Pointer)(unsafe.Pointer(p))))
-}
-func atomicStoreUnmarshalInfo(p **unmarshalInfo, v *unmarshalInfo) {
-	atomic.StorePointer((*unsafe.Pointer)(unsafe.Pointer(p)), unsafe.Pointer(v))
-}
-func atomicLoadMarshalInfo(p **marshalInfo) *marshalInfo {
-	return (*marshalInfo)(atomic.LoadPointer((*unsafe.Pointer)(unsafe.Pointer(p))))
-}
-func atomicStoreMarshalInfo(p **marshalInfo, v *marshalInfo) {
-	atomic.StorePointer((*unsafe.Pointer)(unsafe.Pointer(p)), unsafe.Pointer(v))
-}
-func atomicLoadMergeInfo(p **mergeInfo) *mergeInfo {
-	return (*mergeInfo)(atomic.LoadPointer((*unsafe.Pointer)(unsafe.Pointer(p))))
-}
-func atomicStoreMergeInfo(p **mergeInfo, v *mergeInfo) {
-	atomic.StorePointer((*unsafe.Pointer)(unsafe.Pointer(p)), unsafe.Pointer(v))
-}
-func atomicLoadDiscardInfo(p **discardInfo) *discardInfo {
-	return (*discardInfo)(atomic.LoadPointer((*unsafe.Pointer)(unsafe.Pointer(p))))
-}
-func atomicStoreDiscardInfo(p **discardInfo, v *discardInfo) {
-	atomic.StorePointer((*unsafe.Pointer)(unsafe.Pointer(p)), unsafe.Pointer(v))
-}

vendor/github.com/golang/protobuf/proto/properties.go

@@ -1,162 +1,104 @@
-// Go support for Protocol Buffers - Google's data interchange format
+// Copyright 2010 The Go Authors. All rights reserved.
-//
+// Use of this source code is governed by a BSD-style
-// Copyright 2010 The Go Authors.  All rights reserved.
+// license that can be found in the LICENSE file.
-// https://github.com/golang/protobuf
-//
-// Redistribution and use in source and binary forms, with or without
-// modification, are permitted provided that the following conditions are
-// met:
-//
-//     * Redistributions of source code must retain the above copyright
-// notice, this list of conditions and the following disclaimer.
-//     * Redistributions in binary form must reproduce the above
-// copyright notice, this list of conditions and the following disclaimer
-// in the documentation and/or other materials provided with the
-// distribution.
-//     * Neither the name of Google Inc. nor the names of its
-// contributors may be used to endorse or promote products derived from
-// this software without specific prior written permission.
-//
-// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 package proto
 
-/*
- * Routines for encoding data into the wire format for protocol buffers.
- */
-
 import (
 	"fmt"
-	"log"
 	"reflect"
-	"sort"
 	"strconv"
 	"strings"
 	"sync"
+
+	"google.golang.org/protobuf/reflect/protoreflect"
+	"google.golang.org/protobuf/runtime/protoimpl"
 )
 
-const debug bool = false
+// StructProperties represents protocol buffer type information for a
-
+// generated protobuf message in the open-struct API.
-// Constants that identify the encoding of a value on the wire.
+//
-const (
+// Deprecated: Do not use.
-	WireVarint     = 0
-	WireFixed64    = 1
-	WireBytes      = 2
-	WireStartGroup = 3
-	WireEndGroup   = 4
-	WireFixed32    = 5
-)
-
-// tagMap is an optimization over map[int]int for typical protocol buffer
-// use-cases. Encoded protocol buffers are often in tag order with small tag
-// numbers.
-type tagMap struct {
-	fastTags []int
-	slowTags map[int]int
-}
-
-// tagMapFastLimit is the upper bound on the tag number that will be stored in
-// the tagMap slice rather than its map.
-const tagMapFastLimit = 1024
-
-func (p *tagMap) get(t int) (int, bool) {
-	if t > 0 && t < tagMapFastLimit {
-		if t >= len(p.fastTags) {
-			return 0, false
-		}
-		fi := p.fastTags[t]
-		return fi, fi >= 0
-	}
-	fi, ok := p.slowTags[t]
-	return fi, ok
-}
-
-func (p *tagMap) put(t int, fi int) {
-	if t > 0 && t < tagMapFastLimit {
-		for len(p.fastTags) < t+1 {
-			p.fastTags = append(p.fastTags, -1)
-		}
-		p.fastTags[t] = fi
-		return
-	}
-	if p.slowTags == nil {
-		p.slowTags = make(map[int]int)
-	}
-	p.slowTags[t] = fi
-}
-
-// StructProperties represents properties for all the fields of a struct.
-// decoderTags and decoderOrigNames should only be used by the decoder.
 type StructProperties struct {
-	Prop             []*Properties  // properties for each field
+	// Prop are the properties for each field.
-	reqCount         int            // required count
+	//
-	decoderTags      tagMap         // map from proto tag to struct field number
+	// Fields belonging to a oneof are stored in OneofTypes instead, with a
-	decoderOrigNames map[string]int // map from original name to struct field number
+	// single Properties representing the parent oneof held here.
-	order            []int          // list of struct field numbers in tag order
+	//
+	// The order of Prop matches the order of fields in the Go struct.
+	// Struct fields that are not related to protobufs have a "XXX_" prefix
+	// in the Properties.Name and must be ignored by the user.
+	Prop []*Properties
 
 	// OneofTypes contains information about the oneof fields in this message.
-	// It is keyed by the original name of a field.
+	// It is keyed by the protobuf field name.
 	OneofTypes map[string]*OneofProperties
 }
 
-// OneofProperties represents information about a specific field in a oneof.
+// Properties represents the type information for a protobuf message field.
-type OneofProperties struct {
+//
-	Type  reflect.Type // pointer to generated struct type for this oneof field
+// Deprecated: Do not use.
-	Field int          // struct field number of the containing oneof in the message
-	Prop  *Properties
-}
-
-// Implement the sorting interface so we can sort the fields in tag order, as recommended by the spec.
-// See encode.go, (*Buffer).enc_struct.
-
-func (sp *StructProperties) Len() int { return len(sp.order) }
-func (sp *StructProperties) Less(i, j int) bool {
-	return sp.Prop[sp.order[i]].Tag < sp.Prop[sp.order[j]].Tag
-}
-func (sp *StructProperties) Swap(i, j int) { sp.order[i], sp.order[j] = sp.order[j], sp.order[i] }
-
-// Properties represents the protocol-specific behavior of a single struct field.
 type Properties struct {
-	Name     string // name of the field, for error messages
+	// Name is a placeholder name with little meaningful semantic value.
-	OrigName string // original name before protocol compiler (always set)
+	// If the name has an "XXX_" prefix, the entire Properties must be ignored.
-	JSONName string // name to use for JSON; determined by protoc
+	Name string
-	Wire     string
+	// OrigName is the protobuf field name or oneof name.
+	OrigName string
+	// JSONName is the JSON name for the protobuf field.
+	JSONName string
+	// Enum is a placeholder name for enums.
+	// For historical reasons, this is neither the Go name for the enum,
+	// nor the protobuf name for the enum.
+	Enum string // Deprecated: Do not use.
+	// Weak contains the full name of the weakly referenced message.
+	Weak string
+	// Wire is a string representation of the wire type.
+	Wire string
+	// WireType is the protobuf wire type for the field.
 	WireType int
-	Tag      int
+	// Tag is the protobuf field number.
+	Tag int
+	// Required reports whether this is a required field.
 	Required bool
+	// Optional reports whether this is a optional field.
 	Optional bool
+	// Repeated reports whether this is a repeated field.
 	Repeated bool
-	Packed   bool   // relevant for repeated primitives only
+	// Packed reports whether this is a packed repeated field of scalars.
-	Enum     string // set for enum types only
+	Packed bool
-	proto3   bool   // whether this is known to be a proto3 field
+	// Proto3 reports whether this field operates under the proto3 syntax.
-	oneof    bool   // whether this is a oneof field
+	Proto3 bool
+	// Oneof reports whether this field belongs within a oneof.
+	Oneof bool
 
-	Default    string // default value
+	// Default is the default value in string form.
-	HasDefault bool   // whether an explicit default was provided
+	Default string
+	// HasDefault reports whether the field has a default value.
+	HasDefault bool
 
-	stype reflect.Type      // set for struct types only
+	// MapKeyProp is the properties for the key field for a map field.
-	sprop *StructProperties // set for struct types only
+	MapKeyProp *Properties
+	// MapValProp is the properties for the value field for a map field.
+	MapValProp *Properties
+}
 
-	mtype      reflect.Type // set for map types only
+// OneofProperties represents the type information for a protobuf oneof.
-	MapKeyProp *Properties  // set for map types only
+//
-	MapValProp *Properties  // set for map types only
+// Deprecated: Do not use.
+type OneofProperties struct {
+	// Type is a pointer to the generated wrapper type for the field value.
+	// This is nil for messages that are not in the open-struct API.
+	Type reflect.Type
+	// Field is the index into StructProperties.Prop for the containing oneof.
+	Field int
+	// Prop is the properties for the field.
+	Prop *Properties
 }
 
 // String formats the properties in the protobuf struct field tag style.
 func (p *Properties) String() string {
 	s := p.Wire
-	s += ","
+	s += "," + strconv.Itoa(p.Tag)
-	s += strconv.Itoa(p.Tag)
 	if p.Required {
 		s += ",req"
 	}
@@ -170,18 +112,21 @@ func (p *Properties) String() string {
 		s += ",packed"
 	}
 	s += ",name=" + p.OrigName
-	if p.JSONName != p.OrigName {
+	if p.JSONName != "" {
 		s += ",json=" + p.JSONName
 	}
-	if p.proto3 {
-		s += ",proto3"
-	}
-	if p.oneof {
-		s += ",oneof"
-	}
 	if len(p.Enum) > 0 {
 		s += ",enum=" + p.Enum
 	}
+	if len(p.Weak) > 0 {
+		s += ",weak=" + p.Weak
+	}
+	if p.Proto3 {
+		s += ",proto3"
+	}
+	if p.Oneof {
+		s += ",oneof"
+	}
 	if p.HasDefault {
 		s += ",def=" + p.Default
 	}
@@ -189,356 +134,173 @@ func (p *Properties) String() string {
 }
 
 // Parse populates p by parsing a string in the protobuf struct field tag style.
-func (p *Properties) Parse(s string) {
+func (p *Properties) Parse(tag string) {
-	// "bytes,49,opt,name=foo,def=hello!"
+	// For example: "bytes,49,opt,name=foo,def=hello!"
-	fields := strings.Split(s, ",") // breaks def=, but handled below.
+	for len(tag) > 0 {
-	if len(fields) < 2 {
+		i := strings.IndexByte(tag, ',')
-		log.Printf("proto: tag has too few fields: %q", s)
+		if i < 0 {
-		return
+			i = len(tag)
-	}
+		}
-
+		switch s := tag[:i]; {
-	p.Wire = fields[0]
+		case strings.HasPrefix(s, "name="):
-	switch p.Wire {
+			p.OrigName = s[len("name="):]
-	case "varint":
+		case strings.HasPrefix(s, "json="):
-		p.WireType = WireVarint
+			p.JSONName = s[len("json="):]
-	case "fixed32":
+		case strings.HasPrefix(s, "enum="):
-		p.WireType = WireFixed32
+			p.Enum = s[len("enum="):]
-	case "fixed64":
+		case strings.HasPrefix(s, "weak="):
-		p.WireType = WireFixed64
+			p.Weak = s[len("weak="):]
-	case "zigzag32":
+		case strings.Trim(s, "0123456789") == "":
-		p.WireType = WireVarint
+			n, _ := strconv.ParseUint(s, 10, 32)
-	case "zigzag64":
+			p.Tag = int(n)
-		p.WireType = WireVarint
+		case s == "opt":
-	case "bytes", "group":
-		p.WireType = WireBytes
-		// no numeric converter for non-numeric types
-	default:
-		log.Printf("proto: tag has unknown wire type: %q", s)
-		return
-	}
-
-	var err error
-	p.Tag, err = strconv.Atoi(fields[1])
-	if err != nil {
-		return
-	}
-
-outer:
-	for i := 2; i < len(fields); i++ {
-		f := fields[i]
-		switch {
-		case f == "req":
-			p.Required = true
-		case f == "opt":
 			p.Optional = true
-		case f == "rep":
+		case s == "req":
+			p.Required = true
+		case s == "rep":
 			p.Repeated = true
-		case f == "packed":
+		case s == "varint" || s == "zigzag32" || s == "zigzag64":
+			p.Wire = s
+			p.WireType = WireVarint
+		case s == "fixed32":
+			p.Wire = s
+			p.WireType = WireFixed32
+		case s == "fixed64":
+			p.Wire = s
+			p.WireType = WireFixed64
+		case s == "bytes":
+			p.Wire = s
+			p.WireType = WireBytes
+		case s == "group":
+			p.Wire = s
+			p.WireType = WireStartGroup
+		case s == "packed":
 			p.Packed = true
-		case strings.HasPrefix(f, "name="):
+		case s == "proto3":
-			p.OrigName = f[5:]
+			p.Proto3 = true
-		case strings.HasPrefix(f, "json="):
+		case s == "oneof":
-			p.JSONName = f[5:]
+			p.Oneof = true
-		case strings.HasPrefix(f, "enum="):
+		case strings.HasPrefix(s, "def="):
-			p.Enum = f[5:]
+			// The default tag is special in that everything afterwards is the
-		case f == "proto3":
+			// default regardless of the presence of commas.
-			p.proto3 = true
-		case f == "oneof":
-			p.oneof = true
-		case strings.HasPrefix(f, "def="):
 			p.HasDefault = true
-			p.Default = f[4:] // rest of string
+			p.Default, i = tag[len("def="):], len(tag)
-			if i+1 < len(fields) {
-				// Commas aren't escaped, and def is always last.
-				p.Default += "," + strings.Join(fields[i+1:], ",")
-				break outer
-			}
 		}
+		tag = strings.TrimPrefix(tag[i:], ",")
 	}
 }
 
-var protoMessageType = reflect.TypeOf((*Message)(nil)).Elem()
-
-// setFieldProps initializes the field properties for submessages and maps.
-func (p *Properties) setFieldProps(typ reflect.Type, f *reflect.StructField, lockGetProp bool) {
-	switch t1 := typ; t1.Kind() {
-	case reflect.Ptr:
-		if t1.Elem().Kind() == reflect.Struct {
-			p.stype = t1.Elem()
-		}
-
-	case reflect.Slice:
-		if t2 := t1.Elem(); t2.Kind() == reflect.Ptr && t2.Elem().Kind() == reflect.Struct {
-			p.stype = t2.Elem()
-		}
-
-	case reflect.Map:
-		p.mtype = t1
-		p.MapKeyProp = &Properties{}
-		p.MapKeyProp.init(reflect.PtrTo(p.mtype.Key()), "Key", f.Tag.Get("protobuf_key"), nil, lockGetProp)
-		p.MapValProp = &Properties{}
-		vtype := p.mtype.Elem()
-		if vtype.Kind() != reflect.Ptr && vtype.Kind() != reflect.Slice {
-			// The value type is not a message (*T) or bytes ([]byte),
-			// so we need encoders for the pointer to this type.
-			vtype = reflect.PtrTo(vtype)
-		}
-		p.MapValProp.init(vtype, "Value", f.Tag.Get("protobuf_val"), nil, lockGetProp)
-	}
-
-	if p.stype != nil {
-		if lockGetProp {
-			p.sprop = GetProperties(p.stype)
-		} else {
-			p.sprop = getPropertiesLocked(p.stype)
-		}
-	}
-}
-
-var (
-	marshalerType = reflect.TypeOf((*Marshaler)(nil)).Elem()
-)
-
 // Init populates the properties from a protocol buffer struct tag.
+//
+// Deprecated: Do not use.
 func (p *Properties) Init(typ reflect.Type, name, tag string, f *reflect.StructField) {
-	p.init(typ, name, tag, f, true)
-}
-
-func (p *Properties) init(typ reflect.Type, name, tag string, f *reflect.StructField, lockGetProp bool) {
-	// "bytes,49,opt,def=hello!"
 	p.Name = name
 	p.OrigName = name
 	if tag == "" {
 		return
 	}
 	p.Parse(tag)
-	p.setFieldProps(typ, f, lockGetProp)
+
+	if typ != nil && typ.Kind() == reflect.Map {
+		p.MapKeyProp = new(Properties)
+		p.MapKeyProp.Init(nil, "Key", f.Tag.Get("protobuf_key"), nil)
+		p.MapValProp = new(Properties)
+		p.MapValProp.Init(nil, "Value", f.Tag.Get("protobuf_val"), nil)
+	}
 }
 
-var (
+var propertiesCache sync.Map // map[reflect.Type]*StructProperties
-	propertiesMu  sync.RWMutex
-	propertiesMap = make(map[reflect.Type]*StructProperties)
-)
 
-// GetProperties returns the list of properties for the type represented by t.
+// GetProperties returns the list of properties for the type represented by t,
-// t must represent a generated struct type of a protocol message.
+// which must be a generated protocol buffer message in the open-struct API,
+// where protobuf message fields are represented by exported Go struct fields.
+//
+// Deprecated: Use protobuf reflection instead.
 func GetProperties(t reflect.Type) *StructProperties {
-	if t.Kind() != reflect.Struct {
+	if p, ok := propertiesCache.Load(t); ok {
-		panic("proto: type must have kind struct")
+		return p.(*StructProperties)
 	}
-
+	p, _ := propertiesCache.LoadOrStore(t, newProperties(t))
-	// Most calls to GetProperties in a long-running program will be
+	return p.(*StructProperties)
-	// retrieving details for types we have seen before.
-	propertiesMu.RLock()
-	sprop, ok := propertiesMap[t]
-	propertiesMu.RUnlock()
-	if ok {
-		return sprop
-	}
-
-	propertiesMu.Lock()
-	sprop = getPropertiesLocked(t)
-	propertiesMu.Unlock()
-	return sprop
 }
 
-type (
+func newProperties(t reflect.Type) *StructProperties {
-	oneofFuncsIface interface {
+	if t.Kind() != reflect.Struct {
-		XXX_OneofFuncs() (func(Message, *Buffer) error, func(Message, int, int, *Buffer) (bool, error), func(Message) int, []interface{})
+		panic(fmt.Sprintf("%v is not a generated message in the open-struct API", t))
-	}
-	oneofWrappersIface interface {
-		XXX_OneofWrappers() []interface{}
-	}
-)
-
-// getPropertiesLocked requires that propertiesMu is held.
-func getPropertiesLocked(t reflect.Type) *StructProperties {
-	if prop, ok := propertiesMap[t]; ok {
-		return prop
 	}
 
+	var hasOneof bool
 	prop := new(StructProperties)
-	// in case of recursive protos, fill this in now.
-	propertiesMap[t] = prop
-
-	// build properties
-	prop.Prop = make([]*Properties, t.NumField())
-	prop.order = make([]int, t.NumField())
 
+	// Construct a list of properties for each field in the struct.
 	for i := 0; i < t.NumField(); i++ {
-		f := t.Field(i)
 		p := new(Properties)
-		name := f.Name
+		f := t.Field(i)
-		p.init(f.Type, name, f.Tag.Get("protobuf"), &f, false)
+		tagField := f.Tag.Get("protobuf")
+		p.Init(f.Type, f.Name, tagField, &f)
 
-		oneof := f.Tag.Get("protobuf_oneof") // special case
+		tagOneof := f.Tag.Get("protobuf_oneof")
-		if oneof != "" {
+		if tagOneof != "" {
-			// Oneof fields don't use the traditional protobuf tag.
+			hasOneof = true
-			p.OrigName = oneof
+			p.OrigName = tagOneof
 		}
-		prop.Prop[i] = p
+
-		prop.order[i] = i
+		// Rename unrelated struct fields with the "XXX_" prefix since so much
-		if debug {
+		// user code simply checks for this to exclude special fields.
-			print(i, " ", f.Name, " ", t.String(), " ")
+		if tagField == "" && tagOneof == "" && !strings.HasPrefix(p.Name, "XXX_") {
-			if p.Tag > 0 {
+			p.Name = "XXX_" + p.Name
-				print(p.String())
+			p.OrigName = "XXX_" + p.OrigName
+		} else if p.Weak != "" {
+			p.Name = p.OrigName // avoid possible "XXX_" prefix on weak field
+		}
+
+		prop.Prop = append(prop.Prop, p)
+	}
+
+	// Construct a mapping of oneof field names to properties.
+	if hasOneof {
+		var oneofWrappers []interface{}
+		if fn, ok := reflect.PtrTo(t).MethodByName("XXX_OneofFuncs"); ok {
+			oneofWrappers = fn.Func.Call([]reflect.Value{reflect.Zero(fn.Type.In(0))})[3].Interface().([]interface{})
+		}
+		if fn, ok := reflect.PtrTo(t).MethodByName("XXX_OneofWrappers"); ok {
+			oneofWrappers = fn.Func.Call([]reflect.Value{reflect.Zero(fn.Type.In(0))})[0].Interface().([]interface{})
+		}
+		if m, ok := reflect.Zero(reflect.PtrTo(t)).Interface().(protoreflect.ProtoMessage); ok {
+			if m, ok := m.ProtoReflect().(interface{ ProtoMessageInfo() *protoimpl.MessageInfo }); ok {
+				oneofWrappers = m.ProtoMessageInfo().OneofWrappers
 			}
-			print("\n")
 		}
-	}
 
-	// Re-order prop.order.
-	sort.Sort(prop)
-
-	var oots []interface{}
-	switch m := reflect.Zero(reflect.PtrTo(t)).Interface().(type) {
-	case oneofFuncsIface:
-		_, _, _, oots = m.XXX_OneofFuncs()
-	case oneofWrappersIface:
-		oots = m.XXX_OneofWrappers()
-	}
-	if len(oots) > 0 {
-		// Interpret oneof metadata.
 		prop.OneofTypes = make(map[string]*OneofProperties)
-		for _, oot := range oots {
+		for _, wrapper := range oneofWrappers {
-			oop := &OneofProperties{
+			p := &OneofProperties{
-				Type: reflect.ValueOf(oot).Type(), // *T
+				Type: reflect.ValueOf(wrapper).Type(), // *T
 				Prop: new(Properties),
 			}
-			sft := oop.Type.Elem().Field(0)
+			f := p.Type.Elem().Field(0)
-			oop.Prop.Name = sft.Name
+			p.Prop.Name = f.Name
-			oop.Prop.Parse(sft.Tag.Get("protobuf"))
+			p.Prop.Parse(f.Tag.Get("protobuf"))
-			// There will be exactly one interface field that
-			// this new value is assignable to.
-			for i := 0; i < t.NumField(); i++ {
-				f := t.Field(i)
-				if f.Type.Kind() != reflect.Interface {
-					continue
-				}
-				if !oop.Type.AssignableTo(f.Type) {
-					continue
-				}
-				oop.Field = i
-				break
-			}
-			prop.OneofTypes[oop.Prop.OrigName] = oop
-		}
-	}
 
-	// build required counts
+			// Determine the struct field that contains this oneof.
-	// build tags
+			// Each wrapper is assignable to exactly one parent field.
-	reqCount := 0
+			var foundOneof bool
-	prop.decoderOrigNames = make(map[string]int)
+			for i := 0; i < t.NumField() && !foundOneof; i++ {
-	for i, p := range prop.Prop {
+				if p.Type.AssignableTo(t.Field(i).Type) {
-		if strings.HasPrefix(p.Name, "XXX_") {
+					p.Field = i
-			// Internal fields should not appear in tags/origNames maps.
+					foundOneof = true
-			// They are handled specially when encoding and decoding.
+				}
-			continue
+			}
+			if !foundOneof {
+				panic(fmt.Sprintf("%v is not a generated message in the open-struct API", t))
+			}
+			prop.OneofTypes[p.Prop.OrigName] = p
 		}
-		if p.Required {
-			reqCount++
-		}
-		prop.decoderTags.put(p.Tag, i)
-		prop.decoderOrigNames[p.OrigName] = i
 	}
-	prop.reqCount = reqCount
 
 	return prop
 }
 
-// A global registry of enum types.
+func (sp *StructProperties) Len() int           { return len(sp.Prop) }
-// The generated code will register the generated maps by calling RegisterEnum.
+func (sp *StructProperties) Less(i, j int) bool { return false }
-
+func (sp *StructProperties) Swap(i, j int)      { return }
-var enumValueMaps = make(map[string]map[string]int32)
-
-// RegisterEnum is called from the generated code to install the enum descriptor
-// maps into the global table to aid parsing text format protocol buffers.
-func RegisterEnum(typeName string, unusedNameMap map[int32]string, valueMap map[string]int32) {
-	if _, ok := enumValueMaps[typeName]; ok {
-		panic("proto: duplicate enum registered: " + typeName)
-	}
-	enumValueMaps[typeName] = valueMap
-}
-
-// EnumValueMap returns the mapping from names to integers of the
-// enum type enumType, or a nil if not found.
-func EnumValueMap(enumType string) map[string]int32 {
-	return enumValueMaps[enumType]
-}
-
-// A registry of all linked message types.
-// The string is a fully-qualified proto name ("pkg.Message").
-var (
-	protoTypedNils = make(map[string]Message)      // a map from proto names to typed nil pointers
-	protoMapTypes  = make(map[string]reflect.Type) // a map from proto names to map types
-	revProtoTypes  = make(map[reflect.Type]string)
-)
-
-// RegisterType is called from generated code and maps from the fully qualified
-// proto name to the type (pointer to struct) of the protocol buffer.
-func RegisterType(x Message, name string) {
-	if _, ok := protoTypedNils[name]; ok {
-		// TODO: Some day, make this a panic.
-		log.Printf("proto: duplicate proto type registered: %s", name)
-		return
-	}
-	t := reflect.TypeOf(x)
-	if v := reflect.ValueOf(x); v.Kind() == reflect.Ptr && v.Pointer() == 0 {
-		// Generated code always calls RegisterType with nil x.
-		// This check is just for extra safety.
-		protoTypedNils[name] = x
-	} else {
-		protoTypedNils[name] = reflect.Zero(t).Interface().(Message)
-	}
-	revProtoTypes[t] = name
-}
-
-// RegisterMapType is called from generated code and maps from the fully qualified
-// proto name to the native map type of the proto map definition.
-func RegisterMapType(x interface{}, name string) {
-	if reflect.TypeOf(x).Kind() != reflect.Map {
-		panic(fmt.Sprintf("RegisterMapType(%T, %q); want map", x, name))
-	}
-	if _, ok := protoMapTypes[name]; ok {
-		log.Printf("proto: duplicate proto type registered: %s", name)
-		return
-	}
-	t := reflect.TypeOf(x)
-	protoMapTypes[name] = t
-	revProtoTypes[t] = name
-}
-
-// MessageName returns the fully-qualified proto name for the given message type.
-func MessageName(x Message) string {
-	type xname interface {
-		XXX_MessageName() string
-	}
-	if m, ok := x.(xname); ok {
-		return m.XXX_MessageName()
-	}
-	return revProtoTypes[reflect.TypeOf(x)]
-}
-
-// MessageType returns the message type (pointer to struct) for a named message.
-// The type is not guaranteed to implement proto.Message if the name refers to a
-// map entry.
-func MessageType(name string) reflect.Type {
-	if t, ok := protoTypedNils[name]; ok {
-		return reflect.TypeOf(t)
-	}
-	return protoMapTypes[name]
-}
-
-// A registry of all linked proto files.
-var (
-	protoFiles = make(map[string][]byte) // file name => fileDescriptor
-)
-
-// RegisterFile is called from generated code and maps from the
-// full file name of a .proto file to its compressed FileDescriptorProto.
-func RegisterFile(filename string, fileDescriptor []byte) {
-	protoFiles[filename] = fileDescriptor
-}
-
-// FileDescriptor returns the compressed FileDescriptorProto for a .proto file.
-func FileDescriptor(filename string) []byte { return protoFiles[filename] }

vendor/github.com/golang/protobuf/proto/proto.go

@@ -0,0 +1,167 @@
+// Copyright 2019 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// Package proto provides functionality for handling protocol buffer messages.
+// In particular, it provides marshaling and unmarshaling between a protobuf
+// message and the binary wire format.
+//
+// See https://developers.google.com/protocol-buffers/docs/gotutorial for
+// more information.
+//
+// Deprecated: Use the "google.golang.org/protobuf/proto" package instead.
+package proto
+
+import (
+	protoV2 "google.golang.org/protobuf/proto"
+	"google.golang.org/protobuf/reflect/protoreflect"
+	"google.golang.org/protobuf/runtime/protoiface"
+	"google.golang.org/protobuf/runtime/protoimpl"
+)
+
+const (
+	ProtoPackageIsVersion1 = true
+	ProtoPackageIsVersion2 = true
+	ProtoPackageIsVersion3 = true
+	ProtoPackageIsVersion4 = true
+)
+
+// GeneratedEnum is any enum type generated by protoc-gen-go
+// which is a named int32 kind.
+// This type exists for documentation purposes.
+type GeneratedEnum interface{}
+
+// GeneratedMessage is any message type generated by protoc-gen-go
+// which is a pointer to a named struct kind.
+// This type exists for documentation purposes.
+type GeneratedMessage interface{}
+
+// Message is a protocol buffer message.
+//
+// This is the v1 version of the message interface and is marginally better
+// than an empty interface as it lacks any method to programatically interact
+// with the contents of the message.
+//
+// A v2 message is declared in "google.golang.org/protobuf/proto".Message and
+// exposes protobuf reflection as a first-class feature of the interface.
+//
+// To convert a v1 message to a v2 message, use the MessageV2 function.
+// To convert a v2 message to a v1 message, use the MessageV1 function.
+type Message = protoiface.MessageV1
+
+// MessageV1 converts either a v1 or v2 message to a v1 message.
+// It returns nil if m is nil.
+func MessageV1(m GeneratedMessage) protoiface.MessageV1 {
+	return protoimpl.X.ProtoMessageV1Of(m)
+}
+
+// MessageV2 converts either a v1 or v2 message to a v2 message.
+// It returns nil if m is nil.
+func MessageV2(m GeneratedMessage) protoV2.Message {
+	return protoimpl.X.ProtoMessageV2Of(m)
+}
+
+// MessageReflect returns a reflective view for a message.
+// It returns nil if m is nil.
+func MessageReflect(m Message) protoreflect.Message {
+	return protoimpl.X.MessageOf(m)
+}
+
+// Marshaler is implemented by messages that can marshal themselves.
+// This interface is used by the following functions: Size, Marshal,
+// Buffer.Marshal, and Buffer.EncodeMessage.
+//
+// Deprecated: Do not implement.
+type Marshaler interface {
+	// Marshal formats the encoded bytes of the message.
+	// It should be deterministic and emit valid protobuf wire data.
+	// The caller takes ownership of the returned buffer.
+	Marshal() ([]byte, error)
+}
+
+// Unmarshaler is implemented by messages that can unmarshal themselves.
+// This interface is used by the following functions: Unmarshal, UnmarshalMerge,
+// Buffer.Unmarshal, Buffer.DecodeMessage, and Buffer.DecodeGroup.
+//
+// Deprecated: Do not implement.
+type Unmarshaler interface {
+	// Unmarshal parses the encoded bytes of the protobuf wire input.
+	// The provided buffer is only valid for during method call.
+	// It should not reset the receiver message.
+	Unmarshal([]byte) error
+}
+
+// Merger is implemented by messages that can merge themselves.
+// This interface is used by the following functions: Clone and Merge.
+//
+// Deprecated: Do not implement.
+type Merger interface {
+	// Merge merges the contents of src into the receiver message.
+	// It clones all data structures in src such that it aliases no mutable
+	// memory referenced by src.
+	Merge(src Message)
+}
+
+// RequiredNotSetError is an error type returned when
+// marshaling or unmarshaling a message with missing required fields.
+type RequiredNotSetError struct {
+	err error
+}
+
+func (e *RequiredNotSetError) Error() string {
+	if e.err != nil {
+		return e.err.Error()
+	}
+	return "proto: required field not set"
+}
+func (e *RequiredNotSetError) RequiredNotSet() bool {
+	return true
+}
+
+func checkRequiredNotSet(m protoV2.Message) error {
+	if err := protoV2.CheckInitialized(m); err != nil {
+		return &RequiredNotSetError{err: err}
+	}
+	return nil
+}
+
+// Clone returns a deep copy of src.
+func Clone(src Message) Message {
+	return MessageV1(protoV2.Clone(MessageV2(src)))
+}
+
+// Merge merges src into dst, which must be messages of the same type.
+//
+// Populated scalar fields in src are copied to dst, while populated
+// singular messages in src are merged into dst by recursively calling Merge.
+// The elements of every list field in src is appended to the corresponded
+// list fields in dst. The entries of every map field in src is copied into
+// the corresponding map field in dst, possibly replacing existing entries.
+// The unknown fields of src are appended to the unknown fields of dst.
+func Merge(dst, src Message) {
+	protoV2.Merge(MessageV2(dst), MessageV2(src))
+}
+
+// Equal reports whether two messages are equal.
+// If two messages marshal to the same bytes under deterministic serialization,
+// then Equal is guaranteed to report true.
+//
+// Two messages are equal if they are the same protobuf message type,
+// have the same set of populated known and extension field values,
+// and the same set of unknown fields values.
+//
+// Scalar values are compared with the equivalent of the == operator in Go,
+// except bytes values which are compared using bytes.Equal and
+// floating point values which specially treat NaNs as equal.
+// Message values are compared by recursively calling Equal.
+// Lists are equal if each element value is also equal.
+// Maps are equal if they have the same set of keys, where the pair of values
+// for each key is also equal.
+func Equal(x, y Message) bool {
+	return protoV2.Equal(MessageV2(x), MessageV2(y))
+}
+
+func isMessageSet(md protoreflect.MessageDescriptor) bool {
+	ms, ok := md.(interface{ IsMessageSet() bool })
+	return ok && ms.IsMessageSet()
+}

vendor/github.com/golang/protobuf/proto/registry.go

@@ -0,0 +1,323 @@
+// Copyright 2019 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package proto
+
+import (
+	"bytes"
+	"compress/gzip"
+	"fmt"
+	"io/ioutil"
+	"reflect"
+	"strings"
+	"sync"
+
+	"google.golang.org/protobuf/reflect/protoreflect"
+	"google.golang.org/protobuf/reflect/protoregistry"
+	"google.golang.org/protobuf/runtime/protoimpl"
+)
+
+// filePath is the path to the proto source file.
+type filePath = string // e.g., "google/protobuf/descriptor.proto"
+
+// fileDescGZIP is the compressed contents of the encoded FileDescriptorProto.
+type fileDescGZIP = []byte
+
+var fileCache sync.Map // map[filePath]fileDescGZIP
+
+// RegisterFile is called from generated code to register the compressed
+// FileDescriptorProto with the file path for a proto source file.
+//
+// Deprecated: Use protoregistry.GlobalFiles.RegisterFile instead.
+func RegisterFile(s filePath, d fileDescGZIP) {
+	// Decompress the descriptor.
+	zr, err := gzip.NewReader(bytes.NewReader(d))
+	if err != nil {
+		panic(fmt.Sprintf("proto: invalid compressed file descriptor: %v", err))
+	}
+	b, err := ioutil.ReadAll(zr)
+	if err != nil {
+		panic(fmt.Sprintf("proto: invalid compressed file descriptor: %v", err))
+	}
+
+	// Construct a protoreflect.FileDescriptor from the raw descriptor.
+	// Note that DescBuilder.Build automatically registers the constructed
+	// file descriptor with the v2 registry.
+	protoimpl.DescBuilder{RawDescriptor: b}.Build()
+
+	// Locally cache the raw descriptor form for the file.
+	fileCache.Store(s, d)
+}
+
+// FileDescriptor returns the compressed FileDescriptorProto given the file path
+// for a proto source file. It returns nil if not found.
+//
+// Deprecated: Use protoregistry.GlobalFiles.FindFileByPath instead.
+func FileDescriptor(s filePath) fileDescGZIP {
+	if v, ok := fileCache.Load(s); ok {
+		return v.(fileDescGZIP)
+	}
+
+	// Find the descriptor in the v2 registry.
+	var b []byte
+	if fd, _ := protoregistry.GlobalFiles.FindFileByPath(s); fd != nil {
+		if fd, ok := fd.(interface{ ProtoLegacyRawDesc() []byte }); ok {
+			b = fd.ProtoLegacyRawDesc()
+		} else {
+			// TODO: Use protodesc.ToFileDescriptorProto to construct
+			// a descriptorpb.FileDescriptorProto and marshal it.
+			// However, doing so causes the proto package to have a dependency
+			// on descriptorpb, leading to cyclic dependency issues.
+		}
+	}
+
+	// Locally cache the raw descriptor form for the file.
+	if len(b) > 0 {
+		v, _ := fileCache.LoadOrStore(s, protoimpl.X.CompressGZIP(b))
+		return v.(fileDescGZIP)
+	}
+	return nil
+}
+
+// enumName is the name of an enum. For historical reasons, the enum name is
+// neither the full Go name nor the full protobuf name of the enum.
+// The name is the dot-separated combination of just the proto package that the
+// enum is declared within followed by the Go type name of the generated enum.
+type enumName = string // e.g., "my.proto.package.GoMessage_GoEnum"
+
+// enumsByName maps enum values by name to their numeric counterpart.
+type enumsByName = map[string]int32
+
+// enumsByNumber maps enum values by number to their name counterpart.
+type enumsByNumber = map[int32]string
+
+var enumCache sync.Map     // map[enumName]enumsByName
+var numFilesCache sync.Map // map[protoreflect.FullName]int
+
+// RegisterEnum is called from the generated code to register the mapping of
+// enum value names to enum numbers for the enum identified by s.
+//
+// Deprecated: Use protoregistry.GlobalTypes.RegisterEnum instead.
+func RegisterEnum(s enumName, _ enumsByNumber, m enumsByName) {
+	if _, ok := enumCache.Load(s); ok {
+		panic("proto: duplicate enum registered: " + s)
+	}
+	enumCache.Store(s, m)
+
+	// This does not forward registration to the v2 registry since this API
+	// lacks sufficient information to construct a complete v2 enum descriptor.
+}
+
+// EnumValueMap returns the mapping from enum value names to enum numbers for
+// the enum of the given name. It returns nil if not found.
+//
+// Deprecated: Use protoregistry.GlobalTypes.FindEnumByName instead.
+func EnumValueMap(s enumName) enumsByName {
+	if v, ok := enumCache.Load(s); ok {
+		return v.(enumsByName)
+	}
+
+	// Check whether the cache is stale. If the number of files in the current
+	// package differs, then it means that some enums may have been recently
+	// registered upstream that we do not know about.
+	var protoPkg protoreflect.FullName
+	if i := strings.LastIndexByte(s, '.'); i >= 0 {
+		protoPkg = protoreflect.FullName(s[:i])
+	}
+	v, _ := numFilesCache.Load(protoPkg)
+	numFiles, _ := v.(int)
+	if protoregistry.GlobalFiles.NumFilesByPackage(protoPkg) == numFiles {
+		return nil // cache is up-to-date; was not found earlier
+	}
+
+	// Update the enum cache for all enums declared in the given proto package.
+	numFiles = 0
+	protoregistry.GlobalFiles.RangeFilesByPackage(protoPkg, func(fd protoreflect.FileDescriptor) bool {
+		walkEnums(fd, func(ed protoreflect.EnumDescriptor) {
+			name := protoimpl.X.LegacyEnumName(ed)
+			if _, ok := enumCache.Load(name); !ok {
+				m := make(enumsByName)
+				evs := ed.Values()
+				for i := evs.Len() - 1; i >= 0; i-- {
+					ev := evs.Get(i)
+					m[string(ev.Name())] = int32(ev.Number())
+				}
+				enumCache.LoadOrStore(name, m)
+			}
+		})
+		numFiles++
+		return true
+	})
+	numFilesCache.Store(protoPkg, numFiles)
+
+	// Check cache again for enum map.
+	if v, ok := enumCache.Load(s); ok {
+		return v.(enumsByName)
+	}
+	return nil
+}
+
+// walkEnums recursively walks all enums declared in d.
+func walkEnums(d interface {
+	Enums() protoreflect.EnumDescriptors
+	Messages() protoreflect.MessageDescriptors
+}, f func(protoreflect.EnumDescriptor)) {
+	eds := d.Enums()
+	for i := eds.Len() - 1; i >= 0; i-- {
+		f(eds.Get(i))
+	}
+	mds := d.Messages()
+	for i := mds.Len() - 1; i >= 0; i-- {
+		walkEnums(mds.Get(i), f)
+	}
+}
+
+// messageName is the full name of protobuf message.
+type messageName = string
+
+var messageTypeCache sync.Map // map[messageName]reflect.Type
+
+// RegisterType is called from generated code to register the message Go type
+// for a message of the given name.
+//
+// Deprecated: Use protoregistry.GlobalTypes.RegisterMessage instead.
+func RegisterType(m Message, s messageName) {
+	mt := protoimpl.X.LegacyMessageTypeOf(m, protoreflect.FullName(s))
+	if err := protoregistry.GlobalTypes.RegisterMessage(mt); err != nil {
+		panic(err)
+	}
+	messageTypeCache.Store(s, reflect.TypeOf(m))
+}
+
+// RegisterMapType is called from generated code to register the Go map type
+// for a protobuf message representing a map entry.
+//
+// Deprecated: Do not use.
+func RegisterMapType(m interface{}, s messageName) {
+	t := reflect.TypeOf(m)
+	if t.Kind() != reflect.Map {
+		panic(fmt.Sprintf("invalid map kind: %v", t))
+	}
+	if _, ok := messageTypeCache.Load(s); ok {
+		panic(fmt.Errorf("proto: duplicate proto message registered: %s", s))
+	}
+	messageTypeCache.Store(s, t)
+}
+
+// MessageType returns the message type for a named message.
+// It returns nil if not found.
+//
+// Deprecated: Use protoregistry.GlobalTypes.FindMessageByName instead.
+func MessageType(s messageName) reflect.Type {
+	if v, ok := messageTypeCache.Load(s); ok {
+		return v.(reflect.Type)
+	}
+
+	// Derive the message type from the v2 registry.
+	var t reflect.Type
+	if mt, _ := protoregistry.GlobalTypes.FindMessageByName(protoreflect.FullName(s)); mt != nil {
+		t = messageGoType(mt)
+	}
+
+	// If we could not get a concrete type, it is possible that it is a
+	// pseudo-message for a map entry.
+	if t == nil {
+		d, _ := protoregistry.GlobalFiles.FindDescriptorByName(protoreflect.FullName(s))
+		if md, _ := d.(protoreflect.MessageDescriptor); md != nil && md.IsMapEntry() {
+			kt := goTypeForField(md.Fields().ByNumber(1))
+			vt := goTypeForField(md.Fields().ByNumber(2))
+			t = reflect.MapOf(kt, vt)
+		}
+	}
+
+	// Locally cache the message type for the given name.
+	if t != nil {
+		v, _ := messageTypeCache.LoadOrStore(s, t)
+		return v.(reflect.Type)
+	}
+	return nil
+}
+
+func goTypeForField(fd protoreflect.FieldDescriptor) reflect.Type {
+	switch k := fd.Kind(); k {
+	case protoreflect.EnumKind:
+		if et, _ := protoregistry.GlobalTypes.FindEnumByName(fd.Enum().FullName()); et != nil {
+			return enumGoType(et)
+		}
+		return reflect.TypeOf(protoreflect.EnumNumber(0))
+	case protoreflect.MessageKind, protoreflect.GroupKind:
+		if mt, _ := protoregistry.GlobalTypes.FindMessageByName(fd.Message().FullName()); mt != nil {
+			return messageGoType(mt)
+		}
+		return reflect.TypeOf((*protoreflect.Message)(nil)).Elem()
+	default:
+		return reflect.TypeOf(fd.Default().Interface())
+	}
+}
+
+func enumGoType(et protoreflect.EnumType) reflect.Type {
+	return reflect.TypeOf(et.New(0))
+}
+
+func messageGoType(mt protoreflect.MessageType) reflect.Type {
+	return reflect.TypeOf(MessageV1(mt.Zero().Interface()))
+}
+
+// MessageName returns the full protobuf name for the given message type.
+//
+// Deprecated: Use protoreflect.MessageDescriptor.FullName instead.
+func MessageName(m Message) messageName {
+	if m == nil {
+		return ""
+	}
+	if m, ok := m.(interface{ XXX_MessageName() messageName }); ok {
+		return m.XXX_MessageName()
+	}
+	return messageName(protoimpl.X.MessageDescriptorOf(m).FullName())
+}
+
+// RegisterExtension is called from the generated code to register
+// the extension descriptor.
+//
+// Deprecated: Use protoregistry.GlobalTypes.RegisterExtension instead.
+func RegisterExtension(d *ExtensionDesc) {
+	if err := protoregistry.GlobalTypes.RegisterExtension(d); err != nil {
+		panic(err)
+	}
+}
+
+type extensionsByNumber = map[int32]*ExtensionDesc
+
+var extensionCache sync.Map // map[messageName]extensionsByNumber
+
+// RegisteredExtensions returns a map of the registered extensions for the
+// provided protobuf message, indexed by the extension field number.
+//
+// Deprecated: Use protoregistry.GlobalTypes.RangeExtensionsByMessage instead.
+func RegisteredExtensions(m Message) extensionsByNumber {
+	// Check whether the cache is stale. If the number of extensions for
+	// the given message differs, then it means that some extensions were
+	// recently registered upstream that we do not know about.
+	s := MessageName(m)
+	v, _ := extensionCache.Load(s)
+	xs, _ := v.(extensionsByNumber)
+	if protoregistry.GlobalTypes.NumExtensionsByMessage(protoreflect.FullName(s)) == len(xs) {
+		return xs // cache is up-to-date
+	}
+
+	// Cache is stale, re-compute the extensions map.
+	xs = make(extensionsByNumber)
+	protoregistry.GlobalTypes.RangeExtensionsByMessage(protoreflect.FullName(s), func(xt protoreflect.ExtensionType) bool {
+		if xd, ok := xt.(*ExtensionDesc); ok {
+			xs[int32(xt.TypeDescriptor().Number())] = xd
+		} else {
+			// TODO: This implies that the protoreflect.ExtensionType is a
+			// custom type not generated by protoc-gen-go. We could try and
+			// convert the type to an ExtensionDesc.
+		}
+		return true
+	})
+	extensionCache.Store(s, xs)
+	return xs
+}

vendor/github.com/golang/protobuf/proto/table_merge.go

@@ -1,654 +0,0 @@
-// Go support for Protocol Buffers - Google's data interchange format
-//
-// Copyright 2016 The Go Authors.  All rights reserved.
-// https://github.com/golang/protobuf
-//
-// Redistribution and use in source and binary forms, with or without
-// modification, are permitted provided that the following conditions are
-// met:
-//
-//     * Redistributions of source code must retain the above copyright
-// notice, this list of conditions and the following disclaimer.
-//     * Redistributions in binary form must reproduce the above
-// copyright notice, this list of conditions and the following disclaimer
-// in the documentation and/or other materials provided with the
-// distribution.
-//     * Neither the name of Google Inc. nor the names of its
-// contributors may be used to endorse or promote products derived from
-// this software without specific prior written permission.
-//
-// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-package proto
-
-import (
-	"fmt"
-	"reflect"
-	"strings"
-	"sync"
-	"sync/atomic"
-)
-
-// Merge merges the src message into dst.
-// This assumes that dst and src of the same type and are non-nil.
-func (a *InternalMessageInfo) Merge(dst, src Message) {
-	mi := atomicLoadMergeInfo(&a.merge)
-	if mi == nil {
-		mi = getMergeInfo(reflect.TypeOf(dst).Elem())
-		atomicStoreMergeInfo(&a.merge, mi)
-	}
-	mi.merge(toPointer(&dst), toPointer(&src))
-}
-
-type mergeInfo struct {
-	typ reflect.Type
-
-	initialized int32 // 0: only typ is valid, 1: everything is valid
-	lock        sync.Mutex
-
-	fields       []mergeFieldInfo
-	unrecognized field // Offset of XXX_unrecognized
-}
-
-type mergeFieldInfo struct {
-	field field // Offset of field, guaranteed to be valid
-
-	// isPointer reports whether the value in the field is a pointer.
-	// This is true for the following situations:
-	//	* Pointer to struct
-	//	* Pointer to basic type (proto2 only)
-	//	* Slice (first value in slice header is a pointer)
-	//	* String (first value in string header is a pointer)
-	isPointer bool
-
-	// basicWidth reports the width of the field assuming that it is directly
-	// embedded in the struct (as is the case for basic types in proto3).
-	// The possible values are:
-	// 	0: invalid
-	//	1: bool
-	//	4: int32, uint32, float32
-	//	8: int64, uint64, float64
-	basicWidth int
-
-	// Where dst and src are pointers to the types being merged.
-	merge func(dst, src pointer)
-}
-
-var (
-	mergeInfoMap  = map[reflect.Type]*mergeInfo{}
-	mergeInfoLock sync.Mutex
-)
-
-func getMergeInfo(t reflect.Type) *mergeInfo {
-	mergeInfoLock.Lock()
-	defer mergeInfoLock.Unlock()
-	mi := mergeInfoMap[t]
-	if mi == nil {
-		mi = &mergeInfo{typ: t}
-		mergeInfoMap[t] = mi
-	}
-	return mi
-}
-
-// merge merges src into dst assuming they are both of type *mi.typ.
-func (mi *mergeInfo) merge(dst, src pointer) {
-	if dst.isNil() {
-		panic("proto: nil destination")
-	}
-	if src.isNil() {
-		return // Nothing to do.
-	}
-
-	if atomic.LoadInt32(&mi.initialized) == 0 {
-		mi.computeMergeInfo()
-	}
-
-	for _, fi := range mi.fields {
-		sfp := src.offset(fi.field)
-
-		// As an optimization, we can avoid the merge function call cost
-		// if we know for sure that the source will have no effect
-		// by checking if it is the zero value.
-		if unsafeAllowed {
-			if fi.isPointer && sfp.getPointer().isNil() { // Could be slice or string
-				continue
-			}
-			if fi.basicWidth > 0 {
-				switch {
-				case fi.basicWidth == 1 && !*sfp.toBool():
-					continue
-				case fi.basicWidth == 4 && *sfp.toUint32() == 0:
-					continue
-				case fi.basicWidth == 8 && *sfp.toUint64() == 0:
-					continue
-				}
-			}
-		}
-
-		dfp := dst.offset(fi.field)
-		fi.merge(dfp, sfp)
-	}
-
-	// TODO: Make this faster?
-	out := dst.asPointerTo(mi.typ).Elem()
-	in := src.asPointerTo(mi.typ).Elem()
-	if emIn, err := extendable(in.Addr().Interface()); err == nil {
-		emOut, _ := extendable(out.Addr().Interface())
-		mIn, muIn := emIn.extensionsRead()
-		if mIn != nil {
-			mOut := emOut.extensionsWrite()
-			muIn.Lock()
-			mergeExtension(mOut, mIn)
-			muIn.Unlock()
-		}
-	}
-
-	if mi.unrecognized.IsValid() {
-		if b := *src.offset(mi.unrecognized).toBytes(); len(b) > 0 {
-			*dst.offset(mi.unrecognized).toBytes() = append([]byte(nil), b...)
-		}
-	}
-}
-
-func (mi *mergeInfo) computeMergeInfo() {
-	mi.lock.Lock()
-	defer mi.lock.Unlock()
-	if mi.initialized != 0 {
-		return
-	}
-	t := mi.typ
-	n := t.NumField()
-
-	props := GetProperties(t)
-	for i := 0; i < n; i++ {
-		f := t.Field(i)
-		if strings.HasPrefix(f.Name, "XXX_") {
-			continue
-		}
-
-		mfi := mergeFieldInfo{field: toField(&f)}
-		tf := f.Type
-
-		// As an optimization, we can avoid the merge function call cost
-		// if we know for sure that the source will have no effect
-		// by checking if it is the zero value.
-		if unsafeAllowed {
-			switch tf.Kind() {
-			case reflect.Ptr, reflect.Slice, reflect.String:
-				// As a special case, we assume slices and strings are pointers
-				// since we know that the first field in the SliceSlice or
-				// StringHeader is a data pointer.
-				mfi.isPointer = true
-			case reflect.Bool:
-				mfi.basicWidth = 1
-			case reflect.Int32, reflect.Uint32, reflect.Float32:
-				mfi.basicWidth = 4
-			case reflect.Int64, reflect.Uint64, reflect.Float64:
-				mfi.basicWidth = 8
-			}
-		}
-
-		// Unwrap tf to get at its most basic type.
-		var isPointer, isSlice bool
-		if tf.Kind() == reflect.Slice && tf.Elem().Kind() != reflect.Uint8 {
-			isSlice = true
-			tf = tf.Elem()
-		}
-		if tf.Kind() == reflect.Ptr {
-			isPointer = true
-			tf = tf.Elem()
-		}
-		if isPointer && isSlice && tf.Kind() != reflect.Struct {
-			panic("both pointer and slice for basic type in " + tf.Name())
-		}
-
-		switch tf.Kind() {
-		case reflect.Int32:
-			switch {
-			case isSlice: // E.g., []int32
-				mfi.merge = func(dst, src pointer) {
-					// NOTE: toInt32Slice is not defined (see pointer_reflect.go).
-					/*
-						sfsp := src.toInt32Slice()
-						if *sfsp != nil {
-							dfsp := dst.toInt32Slice()
-							*dfsp = append(*dfsp, *sfsp...)
-							if *dfsp == nil {
-								*dfsp = []int64{}
-							}
-						}
-					*/
-					sfs := src.getInt32Slice()
-					if sfs != nil {
-						dfs := dst.getInt32Slice()
-						dfs = append(dfs, sfs...)
-						if dfs == nil {
-							dfs = []int32{}
-						}
-						dst.setInt32Slice(dfs)
-					}
-				}
-			case isPointer: // E.g., *int32
-				mfi.merge = func(dst, src pointer) {
-					// NOTE: toInt32Ptr is not defined (see pointer_reflect.go).
-					/*
-						sfpp := src.toInt32Ptr()
-						if *sfpp != nil {
-							dfpp := dst.toInt32Ptr()
-							if *dfpp == nil {
-								*dfpp = Int32(**sfpp)
-							} else {
-								**dfpp = **sfpp
-							}
-						}
-					*/
-					sfp := src.getInt32Ptr()
-					if sfp != nil {
-						dfp := dst.getInt32Ptr()
-						if dfp == nil {
-							dst.setInt32Ptr(*sfp)
-						} else {
-							*dfp = *sfp
-						}
-					}
-				}
-			default: // E.g., int32
-				mfi.merge = func(dst, src pointer) {
-					if v := *src.toInt32(); v != 0 {
-						*dst.toInt32() = v
-					}
-				}
-			}
-		case reflect.Int64:
-			switch {
-			case isSlice: // E.g., []int64
-				mfi.merge = func(dst, src pointer) {
-					sfsp := src.toInt64Slice()
-					if *sfsp != nil {
-						dfsp := dst.toInt64Slice()
-						*dfsp = append(*dfsp, *sfsp...)
-						if *dfsp == nil {
-							*dfsp = []int64{}
-						}
-					}
-				}
-			case isPointer: // E.g., *int64
-				mfi.merge = func(dst, src pointer) {
-					sfpp := src.toInt64Ptr()
-					if *sfpp != nil {
-						dfpp := dst.toInt64Ptr()
-						if *dfpp == nil {
-							*dfpp = Int64(**sfpp)
-						} else {
-							**dfpp = **sfpp
-						}
-					}
-				}
-			default: // E.g., int64
-				mfi.merge = func(dst, src pointer) {
-					if v := *src.toInt64(); v != 0 {
-						*dst.toInt64() = v
-					}
-				}
-			}
-		case reflect.Uint32:
-			switch {
-			case isSlice: // E.g., []uint32
-				mfi.merge = func(dst, src pointer) {
-					sfsp := src.toUint32Slice()
-					if *sfsp != nil {
-						dfsp := dst.toUint32Slice()
-						*dfsp = append(*dfsp, *sfsp...)
-						if *dfsp == nil {
-							*dfsp = []uint32{}
-						}
-					}
-				}
-			case isPointer: // E.g., *uint32
-				mfi.merge = func(dst, src pointer) {
-					sfpp := src.toUint32Ptr()
-					if *sfpp != nil {
-						dfpp := dst.toUint32Ptr()
-						if *dfpp == nil {
-							*dfpp = Uint32(**sfpp)
-						} else {
-							**dfpp = **sfpp
-						}
-					}
-				}
-			default: // E.g., uint32
-				mfi.merge = func(dst, src pointer) {
-					if v := *src.toUint32(); v != 0 {
-						*dst.toUint32() = v
-					}
-				}
-			}
-		case reflect.Uint64:
-			switch {
-			case isSlice: // E.g., []uint64
-				mfi.merge = func(dst, src pointer) {
-					sfsp := src.toUint64Slice()
-					if *sfsp != nil {
-						dfsp := dst.toUint64Slice()
-						*dfsp = append(*dfsp, *sfsp...)
-						if *dfsp == nil {
-							*dfsp = []uint64{}
-						}
-					}
-				}
-			case isPointer: // E.g., *uint64
-				mfi.merge = func(dst, src pointer) {
-					sfpp := src.toUint64Ptr()
-					if *sfpp != nil {
-						dfpp := dst.toUint64Ptr()
-						if *dfpp == nil {
-							*dfpp = Uint64(**sfpp)
-						} else {
-							**dfpp = **sfpp
-						}
-					}
-				}
-			default: // E.g., uint64
-				mfi.merge = func(dst, src pointer) {
-					if v := *src.toUint64(); v != 0 {
-						*dst.toUint64() = v
-					}
-				}
-			}
-		case reflect.Float32:
-			switch {
-			case isSlice: // E.g., []float32
-				mfi.merge = func(dst, src pointer) {
-					sfsp := src.toFloat32Slice()
-					if *sfsp != nil {
-						dfsp := dst.toFloat32Slice()
-						*dfsp = append(*dfsp, *sfsp...)
-						if *dfsp == nil {
-							*dfsp = []float32{}
-						}
-					}
-				}
-			case isPointer: // E.g., *float32
-				mfi.merge = func(dst, src pointer) {
-					sfpp := src.toFloat32Ptr()
-					if *sfpp != nil {
-						dfpp := dst.toFloat32Ptr()
-						if *dfpp == nil {
-							*dfpp = Float32(**sfpp)
-						} else {
-							**dfpp = **sfpp
-						}
-					}
-				}
-			default: // E.g., float32
-				mfi.merge = func(dst, src pointer) {
-					if v := *src.toFloat32(); v != 0 {
-						*dst.toFloat32() = v
-					}
-				}
-			}
-		case reflect.Float64:
-			switch {
-			case isSlice: // E.g., []float64
-				mfi.merge = func(dst, src pointer) {
-					sfsp := src.toFloat64Slice()
-					if *sfsp != nil {
-						dfsp := dst.toFloat64Slice()
-						*dfsp = append(*dfsp, *sfsp...)
-						if *dfsp == nil {
-							*dfsp = []float64{}
-						}
-					}
-				}
-			case isPointer: // E.g., *float64
-				mfi.merge = func(dst, src pointer) {
-					sfpp := src.toFloat64Ptr()
-					if *sfpp != nil {
-						dfpp := dst.toFloat64Ptr()
-						if *dfpp == nil {
-							*dfpp = Float64(**sfpp)
-						} else {
-							**dfpp = **sfpp
-						}
-					}
-				}
-			default: // E.g., float64
-				mfi.merge = func(dst, src pointer) {
-					if v := *src.toFloat64(); v != 0 {
-						*dst.toFloat64() = v
-					}
-				}
-			}
-		case reflect.Bool:
-			switch {
-			case isSlice: // E.g., []bool
-				mfi.merge = func(dst, src pointer) {
-					sfsp := src.toBoolSlice()
-					if *sfsp != nil {
-						dfsp := dst.toBoolSlice()
-						*dfsp = append(*dfsp, *sfsp...)
-						if *dfsp == nil {
-							*dfsp = []bool{}
-						}
-					}
-				}
-			case isPointer: // E.g., *bool
-				mfi.merge = func(dst, src pointer) {
-					sfpp := src.toBoolPtr()
-					if *sfpp != nil {
-						dfpp := dst.toBoolPtr()
-						if *dfpp == nil {
-							*dfpp = Bool(**sfpp)
-						} else {
-							**dfpp = **sfpp
-						}
-					}
-				}
-			default: // E.g., bool
-				mfi.merge = func(dst, src pointer) {
-					if v := *src.toBool(); v {
-						*dst.toBool() = v
-					}
-				}
-			}
-		case reflect.String:
-			switch {
-			case isSlice: // E.g., []string
-				mfi.merge = func(dst, src pointer) {
-					sfsp := src.toStringSlice()
-					if *sfsp != nil {
-						dfsp := dst.toStringSlice()
-						*dfsp = append(*dfsp, *sfsp...)
-						if *dfsp == nil {
-							*dfsp = []string{}
-						}
-					}
-				}
-			case isPointer: // E.g., *string
-				mfi.merge = func(dst, src pointer) {
-					sfpp := src.toStringPtr()
-					if *sfpp != nil {
-						dfpp := dst.toStringPtr()
-						if *dfpp == nil {
-							*dfpp = String(**sfpp)
-						} else {
-							**dfpp = **sfpp
-						}
-					}
-				}
-			default: // E.g., string
-				mfi.merge = func(dst, src pointer) {
-					if v := *src.toString(); v != "" {
-						*dst.toString() = v
-					}
-				}
-			}
-		case reflect.Slice:
-			isProto3 := props.Prop[i].proto3
-			switch {
-			case isPointer:
-				panic("bad pointer in byte slice case in " + tf.Name())
-			case tf.Elem().Kind() != reflect.Uint8:
-				panic("bad element kind in byte slice case in " + tf.Name())
-			case isSlice: // E.g., [][]byte
-				mfi.merge = func(dst, src pointer) {
-					sbsp := src.toBytesSlice()
-					if *sbsp != nil {
-						dbsp := dst.toBytesSlice()
-						for _, sb := range *sbsp {
-							if sb == nil {
-								*dbsp = append(*dbsp, nil)
-							} else {
-								*dbsp = append(*dbsp, append([]byte{}, sb...))
-							}
-						}
-						if *dbsp == nil {
-							*dbsp = [][]byte{}
-						}
-					}
-				}
-			default: // E.g., []byte
-				mfi.merge = func(dst, src pointer) {
-					sbp := src.toBytes()
-					if *sbp != nil {
-						dbp := dst.toBytes()
-						if !isProto3 || len(*sbp) > 0 {
-							*dbp = append([]byte{}, *sbp...)
-						}
-					}
-				}
-			}
-		case reflect.Struct:
-			switch {
-			case !isPointer:
-				panic(fmt.Sprintf("message field %s without pointer", tf))
-			case isSlice: // E.g., []*pb.T
-				mi := getMergeInfo(tf)
-				mfi.merge = func(dst, src pointer) {
-					sps := src.getPointerSlice()
-					if sps != nil {
-						dps := dst.getPointerSlice()
-						for _, sp := range sps {
-							var dp pointer
-							if !sp.isNil() {
-								dp = valToPointer(reflect.New(tf))
-								mi.merge(dp, sp)
-							}
-							dps = append(dps, dp)
-						}
-						if dps == nil {
-							dps = []pointer{}
-						}
-						dst.setPointerSlice(dps)
-					}
-				}
-			default: // E.g., *pb.T
-				mi := getMergeInfo(tf)
-				mfi.merge = func(dst, src pointer) {
-					sp := src.getPointer()
-					if !sp.isNil() {
-						dp := dst.getPointer()
-						if dp.isNil() {
-							dp = valToPointer(reflect.New(tf))
-							dst.setPointer(dp)
-						}
-						mi.merge(dp, sp)
-					}
-				}
-			}
-		case reflect.Map:
-			switch {
-			case isPointer || isSlice:
-				panic("bad pointer or slice in map case in " + tf.Name())
-			default: // E.g., map[K]V
-				mfi.merge = func(dst, src pointer) {
-					sm := src.asPointerTo(tf).Elem()
-					if sm.Len() == 0 {
-						return
-					}
-					dm := dst.asPointerTo(tf).Elem()
-					if dm.IsNil() {
-						dm.Set(reflect.MakeMap(tf))
-					}
-
-					switch tf.Elem().Kind() {
-					case reflect.Ptr: // Proto struct (e.g., *T)
-						for _, key := range sm.MapKeys() {
-							val := sm.MapIndex(key)
-							val = reflect.ValueOf(Clone(val.Interface().(Message)))
-							dm.SetMapIndex(key, val)
-						}
-					case reflect.Slice: // E.g. Bytes type (e.g., []byte)
-						for _, key := range sm.MapKeys() {
-							val := sm.MapIndex(key)
-							val = reflect.ValueOf(append([]byte{}, val.Bytes()...))
-							dm.SetMapIndex(key, val)
-						}
-					default: // Basic type (e.g., string)
-						for _, key := range sm.MapKeys() {
-							val := sm.MapIndex(key)
-							dm.SetMapIndex(key, val)
-						}
-					}
-				}
-			}
-		case reflect.Interface:
-			// Must be oneof field.
-			switch {
-			case isPointer || isSlice:
-				panic("bad pointer or slice in interface case in " + tf.Name())
-			default: // E.g., interface{}
-				// TODO: Make this faster?
-				mfi.merge = func(dst, src pointer) {
-					su := src.asPointerTo(tf).Elem()
-					if !su.IsNil() {
-						du := dst.asPointerTo(tf).Elem()
-						typ := su.Elem().Type()
-						if du.IsNil() || du.Elem().Type() != typ {
-							du.Set(reflect.New(typ.Elem())) // Initialize interface if empty
-						}
-						sv := su.Elem().Elem().Field(0)
-						if sv.Kind() == reflect.Ptr && sv.IsNil() {
-							return
-						}
-						dv := du.Elem().Elem().Field(0)
-						if dv.Kind() == reflect.Ptr && dv.IsNil() {
-							dv.Set(reflect.New(sv.Type().Elem())) // Initialize proto message if empty
-						}
-						switch sv.Type().Kind() {
-						case reflect.Ptr: // Proto struct (e.g., *T)
-							Merge(dv.Interface().(Message), sv.Interface().(Message))
-						case reflect.Slice: // E.g. Bytes type (e.g., []byte)
-							dv.Set(reflect.ValueOf(append([]byte{}, sv.Bytes()...)))
-						default: // Basic type (e.g., string)
-							dv.Set(sv)
-						}
-					}
-				}
-			}
-		default:
-			panic(fmt.Sprintf("merger not found for type:%s", tf))
-		}
-		mi.fields = append(mi.fields, mfi)
-	}
-
-	mi.unrecognized = invalidField
-	if f, ok := t.FieldByName("XXX_unrecognized"); ok {
-		if f.Type != reflect.TypeOf([]byte{}) {
-			panic("expected XXX_unrecognized to be of type []byte")
-		}
-		mi.unrecognized = toField(&f)
-	}
-
-	atomic.StoreInt32(&mi.initialized, 1)
-}

vendor/github.com/golang/protobuf/proto/text.go

@@ -1,845 +0,0 @@
-// Go support for Protocol Buffers - Google's data interchange format
-//
-// Copyright 2010 The Go Authors.  All rights reserved.
-// https://github.com/golang/protobuf
-//
-// Redistribution and use in source and binary forms, with or without
-// modification, are permitted provided that the following conditions are
-// met:
-//
-//     * Redistributions of source code must retain the above copyright
-// notice, this list of conditions and the following disclaimer.
-//     * Redistributions in binary form must reproduce the above
-// copyright notice, this list of conditions and the following disclaimer
-// in the documentation and/or other materials provided with the
-// distribution.
-//     * Neither the name of Google Inc. nor the names of its
-// contributors may be used to endorse or promote products derived from
-// this software without specific prior written permission.
-//
-// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-package proto
-
-// Functions for writing the text protocol buffer format.
-
-import (
-	"bufio"
-	"bytes"
-	"encoding"
-	"errors"
-	"fmt"
-	"io"
-	"log"
-	"math"
-	"reflect"
-	"sort"
-	"strings"
-)
-
-var (
-	newline         = []byte("\n")
-	spaces          = []byte("                                        ")
-	endBraceNewline = []byte("}\n")
-	backslashN      = []byte{'\\', 'n'}
-	backslashR      = []byte{'\\', 'r'}
-	backslashT      = []byte{'\\', 't'}
-	backslashDQ     = []byte{'\\', '"'}
-	backslashBS     = []byte{'\\', '\\'}
-	posInf          = []byte("inf")
-	negInf          = []byte("-inf")
-	nan             = []byte("nan")
-)
-
-type writer interface {
-	io.Writer
-	WriteByte(byte) error
-}
-
-// textWriter is an io.Writer that tracks its indentation level.
-type textWriter struct {
-	ind      int
-	complete bool // if the current position is a complete line
-	compact  bool // whether to write out as a one-liner
-	w        writer
-}
-
-func (w *textWriter) WriteString(s string) (n int, err error) {
-	if !strings.Contains(s, "\n") {
-		if !w.compact && w.complete {
-			w.writeIndent()
-		}
-		w.complete = false
-		return io.WriteString(w.w, s)
-	}
-	// WriteString is typically called without newlines, so this
-	// codepath and its copy are rare.  We copy to avoid
-	// duplicating all of Write's logic here.
-	return w.Write([]byte(s))
-}
-
-func (w *textWriter) Write(p []byte) (n int, err error) {
-	newlines := bytes.Count(p, newline)
-	if newlines == 0 {
-		if !w.compact && w.complete {
-			w.writeIndent()
-		}
-		n, err = w.w.Write(p)
-		w.complete = false
-		return n, err
-	}
-
-	frags := bytes.SplitN(p, newline, newlines+1)
-	if w.compact {
-		for i, frag := range frags {
-			if i > 0 {
-				if err := w.w.WriteByte(' '); err != nil {
-					return n, err
-				}
-				n++
-			}
-			nn, err := w.w.Write(frag)
-			n += nn
-			if err != nil {
-				return n, err
-			}
-		}
-		return n, nil
-	}
-
-	for i, frag := range frags {
-		if w.complete {
-			w.writeIndent()
-		}
-		nn, err := w.w.Write(frag)
-		n += nn
-		if err != nil {
-			return n, err
-		}
-		if i+1 < len(frags) {
-			if err := w.w.WriteByte('\n'); err != nil {
-				return n, err
-			}
-			n++
-		}
-	}
-	w.complete = len(frags[len(frags)-1]) == 0
-	return n, nil
-}
-
-func (w *textWriter) WriteByte(c byte) error {
-	if w.compact && c == '\n' {
-		c = ' '
-	}
-	if !w.compact && w.complete {
-		w.writeIndent()
-	}
-	err := w.w.WriteByte(c)
-	w.complete = c == '\n'
-	return err
-}
-
-func (w *textWriter) indent() { w.ind++ }
-
-func (w *textWriter) unindent() {
-	if w.ind == 0 {
-		log.Print("proto: textWriter unindented too far")
-		return
-	}
-	w.ind--
-}
-
-func writeName(w *textWriter, props *Properties) error {
-	if _, err := w.WriteString(props.OrigName); err != nil {
-		return err
-	}
-	if props.Wire != "group" {
-		return w.WriteByte(':')
-	}
-	return nil
-}
-
-func requiresQuotes(u string) bool {
-	// When type URL contains any characters except [0-9A-Za-z./\-]*, it must be quoted.
-	for _, ch := range u {
-		switch {
-		case ch == '.' || ch == '/' || ch == '_':
-			continue
-		case '0' <= ch && ch <= '9':
-			continue
-		case 'A' <= ch && ch <= 'Z':
-			continue
-		case 'a' <= ch && ch <= 'z':
-			continue
-		default:
-			return true
-		}
-	}
-	return false
-}
-
-// isAny reports whether sv is a google.protobuf.Any message
-func isAny(sv reflect.Value) bool {
-	type wkt interface {
-		XXX_WellKnownType() string
-	}
-	t, ok := sv.Addr().Interface().(wkt)
-	return ok && t.XXX_WellKnownType() == "Any"
-}
-
-// writeProto3Any writes an expanded google.protobuf.Any message.
-//
-// It returns (false, nil) if sv value can't be unmarshaled (e.g. because
-// required messages are not linked in).
-//
-// It returns (true, error) when sv was written in expanded format or an error
-// was encountered.
-func (tm *TextMarshaler) writeProto3Any(w *textWriter, sv reflect.Value) (bool, error) {
-	turl := sv.FieldByName("TypeUrl")
-	val := sv.FieldByName("Value")
-	if !turl.IsValid() || !val.IsValid() {
-		return true, errors.New("proto: invalid google.protobuf.Any message")
-	}
-
-	b, ok := val.Interface().([]byte)
-	if !ok {
-		return true, errors.New("proto: invalid google.protobuf.Any message")
-	}
-
-	parts := strings.Split(turl.String(), "/")
-	mt := MessageType(parts[len(parts)-1])
-	if mt == nil {
-		return false, nil
-	}
-	m := reflect.New(mt.Elem())
-	if err := Unmarshal(b, m.Interface().(Message)); err != nil {
-		return false, nil
-	}
-	w.Write([]byte("["))
-	u := turl.String()
-	if requiresQuotes(u) {
-		writeString(w, u)
-	} else {
-		w.Write([]byte(u))
-	}
-	if w.compact {
-		w.Write([]byte("]:<"))
-	} else {
-		w.Write([]byte("]: <\n"))
-		w.ind++
-	}
-	if err := tm.writeStruct(w, m.Elem()); err != nil {
-		return true, err
-	}
-	if w.compact {
-		w.Write([]byte("> "))
-	} else {
-		w.ind--
-		w.Write([]byte(">\n"))
-	}
-	return true, nil
-}
-
-func (tm *TextMarshaler) writeStruct(w *textWriter, sv reflect.Value) error {
-	if tm.ExpandAny && isAny(sv) {
-		if canExpand, err := tm.writeProto3Any(w, sv); canExpand {
-			return err
-		}
-	}
-	st := sv.Type()
-	sprops := GetProperties(st)
-	for i := 0; i < sv.NumField(); i++ {
-		fv := sv.Field(i)
-		props := sprops.Prop[i]
-		name := st.Field(i).Name
-
-		if name == "XXX_NoUnkeyedLiteral" {
-			continue
-		}
-
-		if strings.HasPrefix(name, "XXX_") {
-			// There are two XXX_ fields:
-			//   XXX_unrecognized []byte
-			//   XXX_extensions   map[int32]proto.Extension
-			// The first is handled here;
-			// the second is handled at the bottom of this function.
-			if name == "XXX_unrecognized" && !fv.IsNil() {
-				if err := writeUnknownStruct(w, fv.Interface().([]byte)); err != nil {
-					return err
-				}
-			}
-			continue
-		}
-		if fv.Kind() == reflect.Ptr && fv.IsNil() {
-			// Field not filled in. This could be an optional field or
-			// a required field that wasn't filled in. Either way, there
-			// isn't anything we can show for it.
-			continue
-		}
-		if fv.Kind() == reflect.Slice && fv.IsNil() {
-			// Repeated field that is empty, or a bytes field that is unused.
-			continue
-		}
-
-		if props.Repeated && fv.Kind() == reflect.Slice {
-			// Repeated field.
-			for j := 0; j < fv.Len(); j++ {
-				if err := writeName(w, props); err != nil {
-					return err
-				}
-				if !w.compact {
-					if err := w.WriteByte(' '); err != nil {
-						return err
-					}
-				}
-				v := fv.Index(j)
-				if v.Kind() == reflect.Ptr && v.IsNil() {
-					// A nil message in a repeated field is not valid,
-					// but we can handle that more gracefully than panicking.
-					if _, err := w.Write([]byte("<nil>\n")); err != nil {
-						return err
-					}
-					continue
-				}
-				if err := tm.writeAny(w, v, props); err != nil {
-					return err
-				}
-				if err := w.WriteByte('\n'); err != nil {
-					return err
-				}
-			}
-			continue
-		}
-		if fv.Kind() == reflect.Map {
-			// Map fields are rendered as a repeated struct with key/value fields.
-			keys := fv.MapKeys()
-			sort.Sort(mapKeys(keys))
-			for _, key := range keys {
-				val := fv.MapIndex(key)
-				if err := writeName(w, props); err != nil {
-					return err
-				}
-				if !w.compact {
-					if err := w.WriteByte(' '); err != nil {
-						return err
-					}
-				}
-				// open struct
-				if err := w.WriteByte('<'); err != nil {
-					return err
-				}
-				if !w.compact {
-					if err := w.WriteByte('\n'); err != nil {
-						return err
-					}
-				}
-				w.indent()
-				// key
-				if _, err := w.WriteString("key:"); err != nil {
-					return err
-				}
-				if !w.compact {
-					if err := w.WriteByte(' '); err != nil {
-						return err
-					}
-				}
-				if err := tm.writeAny(w, key, props.MapKeyProp); err != nil {
-					return err
-				}
-				if err := w.WriteByte('\n'); err != nil {
-					return err
-				}
-				// nil values aren't legal, but we can avoid panicking because of them.
-				if val.Kind() != reflect.Ptr || !val.IsNil() {
-					// value
-					if _, err := w.WriteString("value:"); err != nil {
-						return err
-					}
-					if !w.compact {
-						if err := w.WriteByte(' '); err != nil {
-							return err
-						}
-					}
-					if err := tm.writeAny(w, val, props.MapValProp); err != nil {
-						return err
-					}
-					if err := w.WriteByte('\n'); err != nil {
-						return err
-					}
-				}
-				// close struct
-				w.unindent()
-				if err := w.WriteByte('>'); err != nil {
-					return err
-				}
-				if err := w.WriteByte('\n'); err != nil {
-					return err
-				}
-			}
-			continue
-		}
-		if props.proto3 && fv.Kind() == reflect.Slice && fv.Len() == 0 {
-			// empty bytes field
-			continue
-		}
-		if fv.Kind() != reflect.Ptr && fv.Kind() != reflect.Slice {
-			// proto3 non-repeated scalar field; skip if zero value
-			if isProto3Zero(fv) {
-				continue
-			}
-		}
-
-		if fv.Kind() == reflect.Interface {
-			// Check if it is a oneof.
-			if st.Field(i).Tag.Get("protobuf_oneof") != "" {
-				// fv is nil, or holds a pointer to generated struct.
-				// That generated struct has exactly one field,
-				// which has a protobuf struct tag.
-				if fv.IsNil() {
-					continue
-				}
-				inner := fv.Elem().Elem() // interface -> *T -> T
-				tag := inner.Type().Field(0).Tag.Get("protobuf")
-				props = new(Properties) // Overwrite the outer props var, but not its pointee.
-				props.Parse(tag)
-				// Write the value in the oneof, not the oneof itself.
-				fv = inner.Field(0)
-
-				// Special case to cope with malformed messages gracefully:
-				// If the value in the oneof is a nil pointer, don't panic
-				// in writeAny.
-				if fv.Kind() == reflect.Ptr && fv.IsNil() {
-					// Use errors.New so writeAny won't render quotes.
-					msg := errors.New("/* nil */")
-					fv = reflect.ValueOf(&msg).Elem()
-				}
-			}
-		}
-
-		if err := writeName(w, props); err != nil {
-			return err
-		}
-		if !w.compact {
-			if err := w.WriteByte(' '); err != nil {
-				return err
-			}
-		}
-
-		// Enums have a String method, so writeAny will work fine.
-		if err := tm.writeAny(w, fv, props); err != nil {
-			return err
-		}
-
-		if err := w.WriteByte('\n'); err != nil {
-			return err
-		}
-	}
-
-	// Extensions (the XXX_extensions field).
-	pv := sv.Addr()
-	if _, err := extendable(pv.Interface()); err == nil {
-		if err := tm.writeExtensions(w, pv); err != nil {
-			return err
-		}
-	}
-
-	return nil
-}
-
-var textMarshalerType = reflect.TypeOf((*encoding.TextMarshaler)(nil)).Elem()
-
-// writeAny writes an arbitrary field.
-func (tm *TextMarshaler) writeAny(w *textWriter, v reflect.Value, props *Properties) error {
-	v = reflect.Indirect(v)
-
-	// Floats have special cases.
-	if v.Kind() == reflect.Float32 || v.Kind() == reflect.Float64 {
-		x := v.Float()
-		var b []byte
-		switch {
-		case math.IsInf(x, 1):
-			b = posInf
-		case math.IsInf(x, -1):
-			b = negInf
-		case math.IsNaN(x):
-			b = nan
-		}
-		if b != nil {
-			_, err := w.Write(b)
-			return err
-		}
-		// Other values are handled below.
-	}
-
-	// We don't attempt to serialise every possible value type; only those
-	// that can occur in protocol buffers.
-	switch v.Kind() {
-	case reflect.Slice:
-		// Should only be a []byte; repeated fields are handled in writeStruct.
-		if err := writeString(w, string(v.Bytes())); err != nil {
-			return err
-		}
-	case reflect.String:
-		if err := writeString(w, v.String()); err != nil {
-			return err
-		}
-	case reflect.Struct:
-		// Required/optional group/message.
-		var bra, ket byte = '<', '>'
-		if props != nil && props.Wire == "group" {
-			bra, ket = '{', '}'
-		}
-		if err := w.WriteByte(bra); err != nil {
-			return err
-		}
-		if !w.compact {
-			if err := w.WriteByte('\n'); err != nil {
-				return err
-			}
-		}
-		w.indent()
-		if v.CanAddr() {
-			// Calling v.Interface on a struct causes the reflect package to
-			// copy the entire struct. This is racy with the new Marshaler
-			// since we atomically update the XXX_sizecache.
-			//
-			// Thus, we retrieve a pointer to the struct if possible to avoid
-			// a race since v.Interface on the pointer doesn't copy the struct.
-			//
-			// If v is not addressable, then we are not worried about a race
-			// since it implies that the binary Marshaler cannot possibly be
-			// mutating this value.
-			v = v.Addr()
-		}
-		if v.Type().Implements(textMarshalerType) {
-			text, err := v.Interface().(encoding.TextMarshaler).MarshalText()
-			if err != nil {
-				return err
-			}
-			if _, err = w.Write(text); err != nil {
-				return err
-			}
-		} else {
-			if v.Kind() == reflect.Ptr {
-				v = v.Elem()
-			}
-			if err := tm.writeStruct(w, v); err != nil {
-				return err
-			}
-		}
-		w.unindent()
-		if err := w.WriteByte(ket); err != nil {
-			return err
-		}
-	default:
-		_, err := fmt.Fprint(w, v.Interface())
-		return err
-	}
-	return nil
-}
-
-// equivalent to C's isprint.
-func isprint(c byte) bool {
-	return c >= 0x20 && c < 0x7f
-}
-
-// writeString writes a string in the protocol buffer text format.
-// It is similar to strconv.Quote except we don't use Go escape sequences,
-// we treat the string as a byte sequence, and we use octal escapes.
-// These differences are to maintain interoperability with the other
-// languages' implementations of the text format.
-func writeString(w *textWriter, s string) error {
-	// use WriteByte here to get any needed indent
-	if err := w.WriteByte('"'); err != nil {
-		return err
-	}
-	// Loop over the bytes, not the runes.
-	for i := 0; i < len(s); i++ {
-		var err error
-		// Divergence from C++: we don't escape apostrophes.
-		// There's no need to escape them, and the C++ parser
-		// copes with a naked apostrophe.
-		switch c := s[i]; c {
-		case '\n':
-			_, err = w.w.Write(backslashN)
-		case '\r':
-			_, err = w.w.Write(backslashR)
-		case '\t':
-			_, err = w.w.Write(backslashT)
-		case '"':
-			_, err = w.w.Write(backslashDQ)
-		case '\\':
-			_, err = w.w.Write(backslashBS)
-		default:
-			if isprint(c) {
-				err = w.w.WriteByte(c)
-			} else {
-				_, err = fmt.Fprintf(w.w, "\\%03o", c)
-			}
-		}
-		if err != nil {
-			return err
-		}
-	}
-	return w.WriteByte('"')
-}
-
-func writeUnknownStruct(w *textWriter, data []byte) (err error) {
-	if !w.compact {
-		if _, err := fmt.Fprintf(w, "/* %d unknown bytes */\n", len(data)); err != nil {
-			return err
-		}
-	}
-	b := NewBuffer(data)
-	for b.index < len(b.buf) {
-		x, err := b.DecodeVarint()
-		if err != nil {
-			_, err := fmt.Fprintf(w, "/* %v */\n", err)
-			return err
-		}
-		wire, tag := x&7, x>>3
-		if wire == WireEndGroup {
-			w.unindent()
-			if _, err := w.Write(endBraceNewline); err != nil {
-				return err
-			}
-			continue
-		}
-		if _, err := fmt.Fprint(w, tag); err != nil {
-			return err
-		}
-		if wire != WireStartGroup {
-			if err := w.WriteByte(':'); err != nil {
-				return err
-			}
-		}
-		if !w.compact || wire == WireStartGroup {
-			if err := w.WriteByte(' '); err != nil {
-				return err
-			}
-		}
-		switch wire {
-		case WireBytes:
-			buf, e := b.DecodeRawBytes(false)
-			if e == nil {
-				_, err = fmt.Fprintf(w, "%q", buf)
-			} else {
-				_, err = fmt.Fprintf(w, "/* %v */", e)
-			}
-		case WireFixed32:
-			x, err = b.DecodeFixed32()
-			err = writeUnknownInt(w, x, err)
-		case WireFixed64:
-			x, err = b.DecodeFixed64()
-			err = writeUnknownInt(w, x, err)
-		case WireStartGroup:
-			err = w.WriteByte('{')
-			w.indent()
-		case WireVarint:
-			x, err = b.DecodeVarint()
-			err = writeUnknownInt(w, x, err)
-		default:
-			_, err = fmt.Fprintf(w, "/* unknown wire type %d */", wire)
-		}
-		if err != nil {
-			return err
-		}
-		if err = w.WriteByte('\n'); err != nil {
-			return err
-		}
-	}
-	return nil
-}
-
-func writeUnknownInt(w *textWriter, x uint64, err error) error {
-	if err == nil {
-		_, err = fmt.Fprint(w, x)
-	} else {
-		_, err = fmt.Fprintf(w, "/* %v */", err)
-	}
-	return err
-}
-
-type int32Slice []int32
-
-func (s int32Slice) Len() int           { return len(s) }
-func (s int32Slice) Less(i, j int) bool { return s[i] < s[j] }
-func (s int32Slice) Swap(i, j int)      { s[i], s[j] = s[j], s[i] }
-
-// writeExtensions writes all the extensions in pv.
-// pv is assumed to be a pointer to a protocol message struct that is extendable.
-func (tm *TextMarshaler) writeExtensions(w *textWriter, pv reflect.Value) error {
-	emap := extensionMaps[pv.Type().Elem()]
-	ep, _ := extendable(pv.Interface())
-
-	// Order the extensions by ID.
-	// This isn't strictly necessary, but it will give us
-	// canonical output, which will also make testing easier.
-	m, mu := ep.extensionsRead()
-	if m == nil {
-		return nil
-	}
-	mu.Lock()
-	ids := make([]int32, 0, len(m))
-	for id := range m {
-		ids = append(ids, id)
-	}
-	sort.Sort(int32Slice(ids))
-	mu.Unlock()
-
-	for _, extNum := range ids {
-		ext := m[extNum]
-		var desc *ExtensionDesc
-		if emap != nil {
-			desc = emap[extNum]
-		}
-		if desc == nil {
-			// Unknown extension.
-			if err := writeUnknownStruct(w, ext.enc); err != nil {
-				return err
-			}
-			continue
-		}
-
-		pb, err := GetExtension(ep, desc)
-		if err != nil {
-			return fmt.Errorf("failed getting extension: %v", err)
-		}
-
-		// Repeated extensions will appear as a slice.
-		if !desc.repeated() {
-			if err := tm.writeExtension(w, desc.Name, pb); err != nil {
-				return err
-			}
-		} else {
-			v := reflect.ValueOf(pb)
-			for i := 0; i < v.Len(); i++ {
-				if err := tm.writeExtension(w, desc.Name, v.Index(i).Interface()); err != nil {
-					return err
-				}
-			}
-		}
-	}
-	return nil
-}
-
-func (tm *TextMarshaler) writeExtension(w *textWriter, name string, pb interface{}) error {
-	if _, err := fmt.Fprintf(w, "[%s]:", name); err != nil {
-		return err
-	}
-	if !w.compact {
-		if err := w.WriteByte(' '); err != nil {
-			return err
-		}
-	}
-	if err := tm.writeAny(w, reflect.ValueOf(pb), nil); err != nil {
-		return err
-	}
-	if err := w.WriteByte('\n'); err != nil {
-		return err
-	}
-	return nil
-}
-
-func (w *textWriter) writeIndent() {
-	if !w.complete {
-		return
-	}
-	remain := w.ind * 2
-	for remain > 0 {
-		n := remain
-		if n > len(spaces) {
-			n = len(spaces)
-		}
-		w.w.Write(spaces[:n])
-		remain -= n
-	}
-	w.complete = false
-}
-
-// TextMarshaler is a configurable text format marshaler.
-type TextMarshaler struct {
-	Compact   bool // use compact text format (one line).
-	ExpandAny bool // expand google.protobuf.Any messages of known types
-}
-
-// Marshal writes a given protocol buffer in text format.
-// The only errors returned are from w.
-func (tm *TextMarshaler) Marshal(w io.Writer, pb Message) error {
-	val := reflect.ValueOf(pb)
-	if pb == nil || val.IsNil() {
-		w.Write([]byte("<nil>"))
-		return nil
-	}
-	var bw *bufio.Writer
-	ww, ok := w.(writer)
-	if !ok {
-		bw = bufio.NewWriter(w)
-		ww = bw
-	}
-	aw := &textWriter{
-		w:        ww,
-		complete: true,
-		compact:  tm.Compact,
-	}
-
-	if etm, ok := pb.(encoding.TextMarshaler); ok {
-		text, err := etm.MarshalText()
-		if err != nil {
-			return err
-		}
-		if _, err = aw.Write(text); err != nil {
-			return err
-		}
-		if bw != nil {
-			return bw.Flush()
-		}
-		return nil
-	}
-	// Dereference the received pointer so we don't have outer < and >.
-	v := reflect.Indirect(val)
-	if err := tm.writeStruct(aw, v); err != nil {
-		return err
-	}
-	if bw != nil {
-		return bw.Flush()
-	}
-	return nil
-}
-
-// Text is the same as Marshal, but returns the string directly.
-func (tm *TextMarshaler) Text(pb Message) string {
-	var buf bytes.Buffer
-	tm.Marshal(&buf, pb)
-	return buf.String()
-}
-
-var (
-	defaultTextMarshaler = TextMarshaler{}
-	compactTextMarshaler = TextMarshaler{Compact: true}
-)
-
-// TODO: consider removing some of the Marshal functions below.
-
-// MarshalText writes a given protocol buffer in text format.
-// The only errors returned are from w.
-func MarshalText(w io.Writer, pb Message) error { return defaultTextMarshaler.Marshal(w, pb) }
-
-// MarshalTextString is the same as MarshalText, but returns the string directly.
-func MarshalTextString(pb Message) string { return defaultTextMarshaler.Text(pb) }
-
-// CompactText writes a given protocol buffer in compact text format (one line).
-func CompactText(w io.Writer, pb Message) error { return compactTextMarshaler.Marshal(w, pb) }
-
-// CompactTextString is the same as CompactText, but returns the string directly.
-func CompactTextString(pb Message) string { return compactTextMarshaler.Text(pb) }

vendor/github.com/golang/protobuf/proto/text_decode.go

@@ -0,0 +1,801 @@
+// Copyright 2010 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package proto
+
+import (
+	"encoding"
+	"errors"
+	"fmt"
+	"reflect"
+	"strconv"
+	"strings"
+	"unicode/utf8"
+
+	"google.golang.org/protobuf/encoding/prototext"
+	protoV2 "google.golang.org/protobuf/proto"
+	"google.golang.org/protobuf/reflect/protoreflect"
+	"google.golang.org/protobuf/reflect/protoregistry"
+)
+
+const wrapTextUnmarshalV2 = false
+
+// ParseError is returned by UnmarshalText.
+type ParseError struct {
+	Message string
+
+	// Deprecated: Do not use.
+	Line, Offset int
+}
+
+func (e *ParseError) Error() string {
+	if wrapTextUnmarshalV2 {
+		return e.Message
+	}
+	if e.Line == 1 {
+		return fmt.Sprintf("line 1.%d: %v", e.Offset, e.Message)
+	}
+	return fmt.Sprintf("line %d: %v", e.Line, e.Message)
+}
+
+// UnmarshalText parses a proto text formatted string into m.
+func UnmarshalText(s string, m Message) error {
+	if u, ok := m.(encoding.TextUnmarshaler); ok {
+		return u.UnmarshalText([]byte(s))
+	}
+
+	m.Reset()
+	mi := MessageV2(m)
+
+	if wrapTextUnmarshalV2 {
+		err := prototext.UnmarshalOptions{
+			AllowPartial: true,
+		}.Unmarshal([]byte(s), mi)
+		if err != nil {
+			return &ParseError{Message: err.Error()}
+		}
+		return checkRequiredNotSet(mi)
+	} else {
+		if err := newTextParser(s).unmarshalMessage(mi.ProtoReflect(), ""); err != nil {
+			return err
+		}
+		return checkRequiredNotSet(mi)
+	}
+}
+
+type textParser struct {
+	s            string // remaining input
+	done         bool   // whether the parsing is finished (success or error)
+	backed       bool   // whether back() was called
+	offset, line int
+	cur          token
+}
+
+type token struct {
+	value    string
+	err      *ParseError
+	line     int    // line number
+	offset   int    // byte number from start of input, not start of line
+	unquoted string // the unquoted version of value, if it was a quoted string
+}
+
+func newTextParser(s string) *textParser {
+	p := new(textParser)
+	p.s = s
+	p.line = 1
+	p.cur.line = 1
+	return p
+}
+
+func (p *textParser) unmarshalMessage(m protoreflect.Message, terminator string) (err error) {
+	md := m.Descriptor()
+	fds := md.Fields()
+
+	// A struct is a sequence of "name: value", terminated by one of
+	// '>' or '}', or the end of the input.  A name may also be
+	// "[extension]" or "[type/url]".
+	//
+	// The whole struct can also be an expanded Any message, like:
+	// [type/url] < ... struct contents ... >
+	seen := make(map[protoreflect.FieldNumber]bool)
+	for {
+		tok := p.next()
+		if tok.err != nil {
+			return tok.err
+		}
+		if tok.value == terminator {
+			break
+		}
+		if tok.value == "[" {
+			if err := p.unmarshalExtensionOrAny(m, seen); err != nil {
+				return err
+			}
+			continue
+		}
+
+		// This is a normal, non-extension field.
+		name := protoreflect.Name(tok.value)
+		fd := fds.ByName(name)
+		switch {
+		case fd == nil:
+			gd := fds.ByName(protoreflect.Name(strings.ToLower(string(name))))
+			if gd != nil && gd.Kind() == protoreflect.GroupKind && gd.Message().Name() == name {
+				fd = gd
+			}
+		case fd.Kind() == protoreflect.GroupKind && fd.Message().Name() != name:
+			fd = nil
+		case fd.IsWeak() && fd.Message().IsPlaceholder():
+			fd = nil
+		}
+		if fd == nil {
+			typeName := string(md.FullName())
+			if m, ok := m.Interface().(Message); ok {
+				t := reflect.TypeOf(m)
+				if t.Kind() == reflect.Ptr {
+					typeName = t.Elem().String()
+				}
+			}
+			return p.errorf("unknown field name %q in %v", name, typeName)
+		}
+		if od := fd.ContainingOneof(); od != nil && m.WhichOneof(od) != nil {
+			return p.errorf("field '%s' would overwrite already parsed oneof '%s'", name, od.Name())
+		}
+		if fd.Cardinality() != protoreflect.Repeated && seen[fd.Number()] {
+			return p.errorf("non-repeated field %q was repeated", fd.Name())
+		}
+		seen[fd.Number()] = true
+
+		// Consume any colon.
+		if err := p.checkForColon(fd); err != nil {
+			return err
+		}
+
+		// Parse into the field.
+		v := m.Get(fd)
+		if !m.Has(fd) && (fd.IsList() || fd.IsMap() || fd.Message() != nil) {
+			v = m.Mutable(fd)
+		}
+		if v, err = p.unmarshalValue(v, fd); err != nil {
+			return err
+		}
+		m.Set(fd, v)
+
+		if err := p.consumeOptionalSeparator(); err != nil {
+			return err
+		}
+	}
+	return nil
+}
+
+func (p *textParser) unmarshalExtensionOrAny(m protoreflect.Message, seen map[protoreflect.FieldNumber]bool) error {
+	name, err := p.consumeExtensionOrAnyName()
+	if err != nil {
+		return err
+	}
+
+	// If it contains a slash, it's an Any type URL.
+	if slashIdx := strings.LastIndex(name, "/"); slashIdx >= 0 {
+		tok := p.next()
+		if tok.err != nil {
+			return tok.err
+		}
+		// consume an optional colon
+		if tok.value == ":" {
+			tok = p.next()
+			if tok.err != nil {
+				return tok.err
+			}
+		}
+
+		var terminator string
+		switch tok.value {
+		case "<":
+			terminator = ">"
+		case "{":
+			terminator = "}"
+		default:
+			return p.errorf("expected '{' or '<', found %q", tok.value)
+		}
+
+		mt, err := protoregistry.GlobalTypes.FindMessageByURL(name)
+		if err != nil {
+			return p.errorf("unrecognized message %q in google.protobuf.Any", name[slashIdx+len("/"):])
+		}
+		m2 := mt.New()
+		if err := p.unmarshalMessage(m2, terminator); err != nil {
+			return err
+		}
+		b, err := protoV2.Marshal(m2.Interface())
+		if err != nil {
+			return p.errorf("failed to marshal message of type %q: %v", name[slashIdx+len("/"):], err)
+		}
+
+		urlFD := m.Descriptor().Fields().ByName("type_url")
+		valFD := m.Descriptor().Fields().ByName("value")
+		if seen[urlFD.Number()] {
+			return p.errorf("Any message unpacked multiple times, or %q already set", urlFD.Name())
+		}
+		if seen[valFD.Number()] {
+			return p.errorf("Any message unpacked multiple times, or %q already set", valFD.Name())
+		}
+		m.Set(urlFD, protoreflect.ValueOfString(name))
+		m.Set(valFD, protoreflect.ValueOfBytes(b))
+		seen[urlFD.Number()] = true
+		seen[valFD.Number()] = true
+		return nil
+	}
+
+	xname := protoreflect.FullName(name)
+	xt, _ := protoregistry.GlobalTypes.FindExtensionByName(xname)
+	if xt == nil && isMessageSet(m.Descriptor()) {
+		xt, _ = protoregistry.GlobalTypes.FindExtensionByName(xname.Append("message_set_extension"))
+	}
+	if xt == nil {
+		return p.errorf("unrecognized extension %q", name)
+	}
+	fd := xt.TypeDescriptor()
+	if fd.ContainingMessage().FullName() != m.Descriptor().FullName() {
+		return p.errorf("extension field %q does not extend message %q", name, m.Descriptor().FullName())
+	}
+
+	if err := p.checkForColon(fd); err != nil {
+		return err
+	}
+
+	v := m.Get(fd)
+	if !m.Has(fd) && (fd.IsList() || fd.IsMap() || fd.Message() != nil) {
+		v = m.Mutable(fd)
+	}
+	v, err = p.unmarshalValue(v, fd)
+	if err != nil {
+		return err
+	}
+	m.Set(fd, v)
+	return p.consumeOptionalSeparator()
+}
+
+func (p *textParser) unmarshalValue(v protoreflect.Value, fd protoreflect.FieldDescriptor) (protoreflect.Value, error) {
+	tok := p.next()
+	if tok.err != nil {
+		return v, tok.err
+	}
+	if tok.value == "" {
+		return v, p.errorf("unexpected EOF")
+	}
+
+	switch {
+	case fd.IsList():
+		lv := v.List()
+		var err error
+		if tok.value == "[" {
+			// Repeated field with list notation, like [1,2,3].
+			for {
+				vv := lv.NewElement()
+				vv, err = p.unmarshalSingularValue(vv, fd)
+				if err != nil {
+					return v, err
+				}
+				lv.Append(vv)
+
+				tok := p.next()
+				if tok.err != nil {
+					return v, tok.err
+				}
+				if tok.value == "]" {
+					break
+				}
+				if tok.value != "," {
+					return v, p.errorf("Expected ']' or ',' found %q", tok.value)
+				}
+			}
+			return v, nil
+		}
+
+		// One value of the repeated field.
+		p.back()
+		vv := lv.NewElement()
+		vv, err = p.unmarshalSingularValue(vv, fd)
+		if err != nil {
+			return v, err
+		}
+		lv.Append(vv)
+		return v, nil
+	case fd.IsMap():
+		// The map entry should be this sequence of tokens:
+		//	< key : KEY value : VALUE >
+		// However, implementations may omit key or value, and technically
+		// we should support them in any order.
+		var terminator string
+		switch tok.value {
+		case "<":
+			terminator = ">"
+		case "{":
+			terminator = "}"
+		default:
+			return v, p.errorf("expected '{' or '<', found %q", tok.value)
+		}
+
+		keyFD := fd.MapKey()
+		valFD := fd.MapValue()
+
+		mv := v.Map()
+		kv := keyFD.Default()
+		vv := mv.NewValue()
+		for {
+			tok := p.next()
+			if tok.err != nil {
+				return v, tok.err
+			}
+			if tok.value == terminator {
+				break
+			}
+			var err error
+			switch tok.value {
+			case "key":
+				if err := p.consumeToken(":"); err != nil {
+					return v, err
+				}
+				if kv, err = p.unmarshalSingularValue(kv, keyFD); err != nil {
+					return v, err
+				}
+				if err := p.consumeOptionalSeparator(); err != nil {
+					return v, err
+				}
+			case "value":
+				if err := p.checkForColon(valFD); err != nil {
+					return v, err
+				}
+				if vv, err = p.unmarshalSingularValue(vv, valFD); err != nil {
+					return v, err
+				}
+				if err := p.consumeOptionalSeparator(); err != nil {
+					return v, err
+				}
+			default:
+				p.back()
+				return v, p.errorf(`expected "key", "value", or %q, found %q`, terminator, tok.value)
+			}
+		}
+		mv.Set(kv.MapKey(), vv)
+		return v, nil
+	default:
+		p.back()
+		return p.unmarshalSingularValue(v, fd)
+	}
+}
+
+func (p *textParser) unmarshalSingularValue(v protoreflect.Value, fd protoreflect.FieldDescriptor) (protoreflect.Value, error) {
+	tok := p.next()
+	if tok.err != nil {
+		return v, tok.err
+	}
+	if tok.value == "" {
+		return v, p.errorf("unexpected EOF")
+	}
+
+	switch fd.Kind() {
+	case protoreflect.BoolKind:
+		switch tok.value {
+		case "true", "1", "t", "True":
+			return protoreflect.ValueOfBool(true), nil
+		case "false", "0", "f", "False":
+			return protoreflect.ValueOfBool(false), nil
+		}
+	case protoreflect.Int32Kind, protoreflect.Sint32Kind, protoreflect.Sfixed32Kind:
+		if x, err := strconv.ParseInt(tok.value, 0, 32); err == nil {
+			return protoreflect.ValueOfInt32(int32(x)), nil
+		}
+
+		// The C++ parser accepts large positive hex numbers that uses
+		// two's complement arithmetic to represent negative numbers.
+		// This feature is here for backwards compatibility with C++.
+		if strings.HasPrefix(tok.value, "0x") {
+			if x, err := strconv.ParseUint(tok.value, 0, 32); err == nil {
+				return protoreflect.ValueOfInt32(int32(-(int64(^x) + 1))), nil
+			}
+		}
+	case protoreflect.Int64Kind, protoreflect.Sint64Kind, protoreflect.Sfixed64Kind:
+		if x, err := strconv.ParseInt(tok.value, 0, 64); err == nil {
+			return protoreflect.ValueOfInt64(int64(x)), nil
+		}
+
+		// The C++ parser accepts large positive hex numbers that uses
+		// two's complement arithmetic to represent negative numbers.
+		// This feature is here for backwards compatibility with C++.
+		if strings.HasPrefix(tok.value, "0x") {
+			if x, err := strconv.ParseUint(tok.value, 0, 64); err == nil {
+				return protoreflect.ValueOfInt64(int64(-(int64(^x) + 1))), nil
+			}
+		}
+	case protoreflect.Uint32Kind, protoreflect.Fixed32Kind:
+		if x, err := strconv.ParseUint(tok.value, 0, 32); err == nil {
+			return protoreflect.ValueOfUint32(uint32(x)), nil
+		}
+	case protoreflect.Uint64Kind, protoreflect.Fixed64Kind:
+		if x, err := strconv.ParseUint(tok.value, 0, 64); err == nil {
+			return protoreflect.ValueOfUint64(uint64(x)), nil
+		}
+	case protoreflect.FloatKind:
+		// Ignore 'f' for compatibility with output generated by C++,
+		// but don't remove 'f' when the value is "-inf" or "inf".
+		v := tok.value
+		if strings.HasSuffix(v, "f") && v != "-inf" && v != "inf" {
+			v = v[:len(v)-len("f")]
+		}
+		if x, err := strconv.ParseFloat(v, 32); err == nil {
+			return protoreflect.ValueOfFloat32(float32(x)), nil
+		}
+	case protoreflect.DoubleKind:
+		// Ignore 'f' for compatibility with output generated by C++,
+		// but don't remove 'f' when the value is "-inf" or "inf".
+		v := tok.value
+		if strings.HasSuffix(v, "f") && v != "-inf" && v != "inf" {
+			v = v[:len(v)-len("f")]
+		}
+		if x, err := strconv.ParseFloat(v, 64); err == nil {
+			return protoreflect.ValueOfFloat64(float64(x)), nil
+		}
+	case protoreflect.StringKind:
+		if isQuote(tok.value[0]) {
+			return protoreflect.ValueOfString(tok.unquoted), nil
+		}
+	case protoreflect.BytesKind:
+		if isQuote(tok.value[0]) {
+			return protoreflect.ValueOfBytes([]byte(tok.unquoted)), nil
+		}
+	case protoreflect.EnumKind:
+		if x, err := strconv.ParseInt(tok.value, 0, 32); err == nil {
+			return protoreflect.ValueOfEnum(protoreflect.EnumNumber(x)), nil
+		}
+		vd := fd.Enum().Values().ByName(protoreflect.Name(tok.value))
+		if vd != nil {
+			return protoreflect.ValueOfEnum(vd.Number()), nil
+		}
+	case protoreflect.MessageKind, protoreflect.GroupKind:
+		var terminator string
+		switch tok.value {
+		case "{":
+			terminator = "}"
+		case "<":
+			terminator = ">"
+		default:
+			return v, p.errorf("expected '{' or '<', found %q", tok.value)
+		}
+		err := p.unmarshalMessage(v.Message(), terminator)
+		return v, err
+	default:
+		panic(fmt.Sprintf("invalid kind %v", fd.Kind()))
+	}
+	return v, p.errorf("invalid %v: %v", fd.Kind(), tok.value)
+}
+
+// Consume a ':' from the input stream (if the next token is a colon),
+// returning an error if a colon is needed but not present.
+func (p *textParser) checkForColon(fd protoreflect.FieldDescriptor) *ParseError {
+	tok := p.next()
+	if tok.err != nil {
+		return tok.err
+	}
+	if tok.value != ":" {
+		if fd.Message() == nil {
+			return p.errorf("expected ':', found %q", tok.value)
+		}
+		p.back()
+	}
+	return nil
+}
+
+// consumeExtensionOrAnyName consumes an extension name or an Any type URL and
+// the following ']'. It returns the name or URL consumed.
+func (p *textParser) consumeExtensionOrAnyName() (string, error) {
+	tok := p.next()
+	if tok.err != nil {
+		return "", tok.err
+	}
+
+	// If extension name or type url is quoted, it's a single token.
+	if len(tok.value) > 2 && isQuote(tok.value[0]) && tok.value[len(tok.value)-1] == tok.value[0] {
+		name, err := unquoteC(tok.value[1:len(tok.value)-1], rune(tok.value[0]))
+		if err != nil {
+			return "", err
+		}
+		return name, p.consumeToken("]")
+	}
+
+	// Consume everything up to "]"
+	var parts []string
+	for tok.value != "]" {
+		parts = append(parts, tok.value)
+		tok = p.next()
+		if tok.err != nil {
+			return "", p.errorf("unrecognized type_url or extension name: %s", tok.err)
+		}
+		if p.done && tok.value != "]" {
+			return "", p.errorf("unclosed type_url or extension name")
+		}
+	}
+	return strings.Join(parts, ""), nil
+}
+
+// consumeOptionalSeparator consumes an optional semicolon or comma.
+// It is used in unmarshalMessage to provide backward compatibility.
+func (p *textParser) consumeOptionalSeparator() error {
+	tok := p.next()
+	if tok.err != nil {
+		return tok.err
+	}
+	if tok.value != ";" && tok.value != "," {
+		p.back()
+	}
+	return nil
+}
+
+func (p *textParser) errorf(format string, a ...interface{}) *ParseError {
+	pe := &ParseError{fmt.Sprintf(format, a...), p.cur.line, p.cur.offset}
+	p.cur.err = pe
+	p.done = true
+	return pe
+}
+
+func (p *textParser) skipWhitespace() {
+	i := 0
+	for i < len(p.s) && (isWhitespace(p.s[i]) || p.s[i] == '#') {
+		if p.s[i] == '#' {
+			// comment; skip to end of line or input
+			for i < len(p.s) && p.s[i] != '\n' {
+				i++
+			}
+			if i == len(p.s) {
+				break
+			}
+		}
+		if p.s[i] == '\n' {
+			p.line++
+		}
+		i++
+	}
+	p.offset += i
+	p.s = p.s[i:len(p.s)]
+	if len(p.s) == 0 {
+		p.done = true
+	}
+}
+
+func (p *textParser) advance() {
+	// Skip whitespace
+	p.skipWhitespace()
+	if p.done {
+		return
+	}
+
+	// Start of non-whitespace
+	p.cur.err = nil
+	p.cur.offset, p.cur.line = p.offset, p.line
+	p.cur.unquoted = ""
+	switch p.s[0] {
+	case '<', '>', '{', '}', ':', '[', ']', ';', ',', '/':
+		// Single symbol
+		p.cur.value, p.s = p.s[0:1], p.s[1:len(p.s)]
+	case '"', '\'':
+		// Quoted string
+		i := 1
+		for i < len(p.s) && p.s[i] != p.s[0] && p.s[i] != '\n' {
+			if p.s[i] == '\\' && i+1 < len(p.s) {
+				// skip escaped char
+				i++
+			}
+			i++
+		}
+		if i >= len(p.s) || p.s[i] != p.s[0] {
+			p.errorf("unmatched quote")
+			return
+		}
+		unq, err := unquoteC(p.s[1:i], rune(p.s[0]))
+		if err != nil {
+			p.errorf("invalid quoted string %s: %v", p.s[0:i+1], err)
+			return
+		}
+		p.cur.value, p.s = p.s[0:i+1], p.s[i+1:len(p.s)]
+		p.cur.unquoted = unq
+	default:
+		i := 0
+		for i < len(p.s) && isIdentOrNumberChar(p.s[i]) {
+			i++
+		}
+		if i == 0 {
+			p.errorf("unexpected byte %#x", p.s[0])
+			return
+		}
+		p.cur.value, p.s = p.s[0:i], p.s[i:len(p.s)]
+	}
+	p.offset += len(p.cur.value)
+}
+
+// Back off the parser by one token. Can only be done between calls to next().
+// It makes the next advance() a no-op.
+func (p *textParser) back() { p.backed = true }
+
+// Advances the parser and returns the new current token.
+func (p *textParser) next() *token {
+	if p.backed || p.done {
+		p.backed = false
+		return &p.cur
+	}
+	p.advance()
+	if p.done {
+		p.cur.value = ""
+	} else if len(p.cur.value) > 0 && isQuote(p.cur.value[0]) {
+		// Look for multiple quoted strings separated by whitespace,
+		// and concatenate them.
+		cat := p.cur
+		for {
+			p.skipWhitespace()
+			if p.done || !isQuote(p.s[0]) {
+				break
+			}
+			p.advance()
+			if p.cur.err != nil {
+				return &p.cur
+			}
+			cat.value += " " + p.cur.value
+			cat.unquoted += p.cur.unquoted
+		}
+		p.done = false // parser may have seen EOF, but we want to return cat
+		p.cur = cat
+	}
+	return &p.cur
+}
+
+func (p *textParser) consumeToken(s string) error {
+	tok := p.next()
+	if tok.err != nil {
+		return tok.err
+	}
+	if tok.value != s {
+		p.back()
+		return p.errorf("expected %q, found %q", s, tok.value)
+	}
+	return nil
+}
+
+var errBadUTF8 = errors.New("proto: bad UTF-8")
+
+func unquoteC(s string, quote rune) (string, error) {
+	// This is based on C++'s tokenizer.cc.
+	// Despite its name, this is *not* parsing C syntax.
+	// For instance, "\0" is an invalid quoted string.
+
+	// Avoid allocation in trivial cases.
+	simple := true
+	for _, r := range s {
+		if r == '\\' || r == quote {
+			simple = false
+			break
+		}
+	}
+	if simple {
+		return s, nil
+	}
+
+	buf := make([]byte, 0, 3*len(s)/2)
+	for len(s) > 0 {
+		r, n := utf8.DecodeRuneInString(s)
+		if r == utf8.RuneError && n == 1 {
+			return "", errBadUTF8
+		}
+		s = s[n:]
+		if r != '\\' {
+			if r < utf8.RuneSelf {
+				buf = append(buf, byte(r))
+			} else {
+				buf = append(buf, string(r)...)
+			}
+			continue
+		}
+
+		ch, tail, err := unescape(s)
+		if err != nil {
+			return "", err
+		}
+		buf = append(buf, ch...)
+		s = tail
+	}
+	return string(buf), nil
+}
+
+func unescape(s string) (ch string, tail string, err error) {
+	r, n := utf8.DecodeRuneInString(s)
+	if r == utf8.RuneError && n == 1 {
+		return "", "", errBadUTF8
+	}
+	s = s[n:]
+	switch r {
+	case 'a':
+		return "\a", s, nil
+	case 'b':
+		return "\b", s, nil
+	case 'f':
+		return "\f", s, nil
+	case 'n':
+		return "\n", s, nil
+	case 'r':
+		return "\r", s, nil
+	case 't':
+		return "\t", s, nil
+	case 'v':
+		return "\v", s, nil
+	case '?':
+		return "?", s, nil // trigraph workaround
+	case '\'', '"', '\\':
+		return string(r), s, nil
+	case '0', '1', '2', '3', '4', '5', '6', '7':
+		if len(s) < 2 {
+			return "", "", fmt.Errorf(`\%c requires 2 following digits`, r)
+		}
+		ss := string(r) + s[:2]
+		s = s[2:]
+		i, err := strconv.ParseUint(ss, 8, 8)
+		if err != nil {
+			return "", "", fmt.Errorf(`\%s contains non-octal digits`, ss)
+		}
+		return string([]byte{byte(i)}), s, nil
+	case 'x', 'X', 'u', 'U':
+		var n int
+		switch r {
+		case 'x', 'X':
+			n = 2
+		case 'u':
+			n = 4
+		case 'U':
+			n = 8
+		}
+		if len(s) < n {
+			return "", "", fmt.Errorf(`\%c requires %d following digits`, r, n)
+		}
+		ss := s[:n]
+		s = s[n:]
+		i, err := strconv.ParseUint(ss, 16, 64)
+		if err != nil {
+			return "", "", fmt.Errorf(`\%c%s contains non-hexadecimal digits`, r, ss)
+		}
+		if r == 'x' || r == 'X' {
+			return string([]byte{byte(i)}), s, nil
+		}
+		if i > utf8.MaxRune {
+			return "", "", fmt.Errorf(`\%c%s is not a valid Unicode code point`, r, ss)
+		}
+		return string(i), s, nil
+	}
+	return "", "", fmt.Errorf(`unknown escape \%c`, r)
+}
+
+func isIdentOrNumberChar(c byte) bool {
+	switch {
+	case 'A' <= c && c <= 'Z', 'a' <= c && c <= 'z':
+		return true
+	case '0' <= c && c <= '9':
+		return true
+	}
+	switch c {
+	case '-', '+', '.', '_':
+		return true
+	}
+	return false
+}
+
+func isWhitespace(c byte) bool {
+	switch c {
+	case ' ', '\t', '\n', '\r':
+		return true
+	}
+	return false
+}
+
+func isQuote(c byte) bool {
+	switch c {
+	case '"', '\'':
+		return true
+	}
+	return false
+}

vendor/github.com/golang/protobuf/proto/text_encode.go

@@ -0,0 +1,560 @@
+// Copyright 2010 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package proto
+
+import (
+	"bytes"
+	"encoding"
+	"fmt"
+	"io"
+	"math"
+	"sort"
+	"strings"
+
+	"google.golang.org/protobuf/encoding/prototext"
+	"google.golang.org/protobuf/encoding/protowire"
+	"google.golang.org/protobuf/proto"
+	"google.golang.org/protobuf/reflect/protoreflect"
+	"google.golang.org/protobuf/reflect/protoregistry"
+)
+
+const wrapTextMarshalV2 = false
+
+// TextMarshaler is a configurable text format marshaler.
+type TextMarshaler struct {
+	Compact   bool // use compact text format (one line)
+	ExpandAny bool // expand google.protobuf.Any messages of known types
+}
+
+// Marshal writes the proto text format of m to w.
+func (tm *TextMarshaler) Marshal(w io.Writer, m Message) error {
+	b, err := tm.marshal(m)
+	if len(b) > 0 {
+		if _, err := w.Write(b); err != nil {
+			return err
+		}
+	}
+	return err
+}
+
+// Text returns a proto text formatted string of m.
+func (tm *TextMarshaler) Text(m Message) string {
+	b, _ := tm.marshal(m)
+	return string(b)
+}
+
+func (tm *TextMarshaler) marshal(m Message) ([]byte, error) {
+	mr := MessageReflect(m)
+	if mr == nil || !mr.IsValid() {
+		return []byte("<nil>"), nil
+	}
+
+	if wrapTextMarshalV2 {
+		if m, ok := m.(encoding.TextMarshaler); ok {
+			return m.MarshalText()
+		}
+
+		opts := prototext.MarshalOptions{
+			AllowPartial: true,
+			EmitUnknown:  true,
+		}
+		if !tm.Compact {
+			opts.Indent = "  "
+		}
+		if !tm.ExpandAny {
+			opts.Resolver = (*protoregistry.Types)(nil)
+		}
+		return opts.Marshal(mr.Interface())
+	} else {
+		w := &textWriter{
+			compact:   tm.Compact,
+			expandAny: tm.ExpandAny,
+			complete:  true,
+		}
+
+		if m, ok := m.(encoding.TextMarshaler); ok {
+			b, err := m.MarshalText()
+			if err != nil {
+				return nil, err
+			}
+			w.Write(b)
+			return w.buf, nil
+		}
+
+		err := w.writeMessage(mr)
+		return w.buf, err
+	}
+}
+
+var (
+	defaultTextMarshaler = TextMarshaler{}
+	compactTextMarshaler = TextMarshaler{Compact: true}
+)
+
+// MarshalText writes the proto text format of m to w.
+func MarshalText(w io.Writer, m Message) error { return defaultTextMarshaler.Marshal(w, m) }
+
+// MarshalTextString returns a proto text formatted string of m.
+func MarshalTextString(m Message) string { return defaultTextMarshaler.Text(m) }
+
+// CompactText writes the compact proto text format of m to w.
+func CompactText(w io.Writer, m Message) error { return compactTextMarshaler.Marshal(w, m) }
+
+// CompactTextString returns a compact proto text formatted string of m.
+func CompactTextString(m Message) string { return compactTextMarshaler.Text(m) }
+
+var (
+	newline         = []byte("\n")
+	endBraceNewline = []byte("}\n")
+	posInf          = []byte("inf")
+	negInf          = []byte("-inf")
+	nan             = []byte("nan")
+)
+
+// textWriter is an io.Writer that tracks its indentation level.
+type textWriter struct {
+	compact   bool // same as TextMarshaler.Compact
+	expandAny bool // same as TextMarshaler.ExpandAny
+	complete  bool // whether the current position is a complete line
+	indent    int  // indentation level; never negative
+	buf       []byte
+}
+
+func (w *textWriter) Write(p []byte) (n int, _ error) {
+	newlines := bytes.Count(p, newline)
+	if newlines == 0 {
+		if !w.compact && w.complete {
+			w.writeIndent()
+		}
+		w.buf = append(w.buf, p...)
+		w.complete = false
+		return len(p), nil
+	}
+
+	frags := bytes.SplitN(p, newline, newlines+1)
+	if w.compact {
+		for i, frag := range frags {
+			if i > 0 {
+				w.buf = append(w.buf, ' ')
+				n++
+			}
+			w.buf = append(w.buf, frag...)
+			n += len(frag)
+		}
+		return n, nil
+	}
+
+	for i, frag := range frags {
+		if w.complete {
+			w.writeIndent()
+		}
+		w.buf = append(w.buf, frag...)
+		n += len(frag)
+		if i+1 < len(frags) {
+			w.buf = append(w.buf, '\n')
+			n++
+		}
+	}
+	w.complete = len(frags[len(frags)-1]) == 0
+	return n, nil
+}
+
+func (w *textWriter) WriteByte(c byte) error {
+	if w.compact && c == '\n' {
+		c = ' '
+	}
+	if !w.compact && w.complete {
+		w.writeIndent()
+	}
+	w.buf = append(w.buf, c)
+	w.complete = c == '\n'
+	return nil
+}
+
+func (w *textWriter) writeName(fd protoreflect.FieldDescriptor) {
+	if !w.compact && w.complete {
+		w.writeIndent()
+	}
+	w.complete = false
+
+	if fd.Kind() != protoreflect.GroupKind {
+		w.buf = append(w.buf, fd.Name()...)
+		w.WriteByte(':')
+	} else {
+		// Use message type name for group field name.
+		w.buf = append(w.buf, fd.Message().Name()...)
+	}
+
+	if !w.compact {
+		w.WriteByte(' ')
+	}
+}
+
+func requiresQuotes(u string) bool {
+	// When type URL contains any characters except [0-9A-Za-z./\-]*, it must be quoted.
+	for _, ch := range u {
+		switch {
+		case ch == '.' || ch == '/' || ch == '_':
+			continue
+		case '0' <= ch && ch <= '9':
+			continue
+		case 'A' <= ch && ch <= 'Z':
+			continue
+		case 'a' <= ch && ch <= 'z':
+			continue
+		default:
+			return true
+		}
+	}
+	return false
+}
+
+// writeProto3Any writes an expanded google.protobuf.Any message.
+//
+// It returns (false, nil) if sv value can't be unmarshaled (e.g. because
+// required messages are not linked in).
+//
+// It returns (true, error) when sv was written in expanded format or an error
+// was encountered.
+func (w *textWriter) writeProto3Any(m protoreflect.Message) (bool, error) {
+	md := m.Descriptor()
+	fdURL := md.Fields().ByName("type_url")
+	fdVal := md.Fields().ByName("value")
+
+	url := m.Get(fdURL).String()
+	mt, err := protoregistry.GlobalTypes.FindMessageByURL(url)
+	if err != nil {
+		return false, nil
+	}
+
+	b := m.Get(fdVal).Bytes()
+	m2 := mt.New()
+	if err := proto.Unmarshal(b, m2.Interface()); err != nil {
+		return false, nil
+	}
+	w.Write([]byte("["))
+	if requiresQuotes(url) {
+		w.writeQuotedString(url)
+	} else {
+		w.Write([]byte(url))
+	}
+	if w.compact {
+		w.Write([]byte("]:<"))
+	} else {
+		w.Write([]byte("]: <\n"))
+		w.indent++
+	}
+	if err := w.writeMessage(m2); err != nil {
+		return true, err
+	}
+	if w.compact {
+		w.Write([]byte("> "))
+	} else {
+		w.indent--
+		w.Write([]byte(">\n"))
+	}
+	return true, nil
+}
+
+func (w *textWriter) writeMessage(m protoreflect.Message) error {
+	md := m.Descriptor()
+	if w.expandAny && md.FullName() == "google.protobuf.Any" {
+		if canExpand, err := w.writeProto3Any(m); canExpand {
+			return err
+		}
+	}
+
+	fds := md.Fields()
+	for i := 0; i < fds.Len(); {
+		fd := fds.Get(i)
+		if od := fd.ContainingOneof(); od != nil {
+			fd = m.WhichOneof(od)
+			i += od.Fields().Len()
+		} else {
+			i++
+		}
+		if fd == nil || !m.Has(fd) {
+			continue
+		}
+
+		switch {
+		case fd.IsList():
+			lv := m.Get(fd).List()
+			for j := 0; j < lv.Len(); j++ {
+				w.writeName(fd)
+				v := lv.Get(j)
+				if err := w.writeSingularValue(v, fd); err != nil {
+					return err
+				}
+				w.WriteByte('\n')
+			}
+		case fd.IsMap():
+			kfd := fd.MapKey()
+			vfd := fd.MapValue()
+			mv := m.Get(fd).Map()
+
+			type entry struct{ key, val protoreflect.Value }
+			var entries []entry
+			mv.Range(func(k protoreflect.MapKey, v protoreflect.Value) bool {
+				entries = append(entries, entry{k.Value(), v})
+				return true
+			})
+			sort.Slice(entries, func(i, j int) bool {
+				switch kfd.Kind() {
+				case protoreflect.BoolKind:
+					return !entries[i].key.Bool() && entries[j].key.Bool()
+				case protoreflect.Int32Kind, protoreflect.Sint32Kind, protoreflect.Sfixed32Kind, protoreflect.Int64Kind, protoreflect.Sint64Kind, protoreflect.Sfixed64Kind:
+					return entries[i].key.Int() < entries[j].key.Int()
+				case protoreflect.Uint32Kind, protoreflect.Fixed32Kind, protoreflect.Uint64Kind, protoreflect.Fixed64Kind:
+					return entries[i].key.Uint() < entries[j].key.Uint()
+				case protoreflect.StringKind:
+					return entries[i].key.String() < entries[j].key.String()
+				default:
+					panic("invalid kind")
+				}
+			})
+			for _, entry := range entries {
+				w.writeName(fd)
+				w.WriteByte('<')
+				if !w.compact {
+					w.WriteByte('\n')
+				}
+				w.indent++
+				w.writeName(kfd)
+				if err := w.writeSingularValue(entry.key, kfd); err != nil {
+					return err
+				}
+				w.WriteByte('\n')
+				w.writeName(vfd)
+				if err := w.writeSingularValue(entry.val, vfd); err != nil {
+					return err
+				}
+				w.WriteByte('\n')
+				w.indent--
+				w.WriteByte('>')
+				w.WriteByte('\n')
+			}
+		default:
+			w.writeName(fd)
+			if err := w.writeSingularValue(m.Get(fd), fd); err != nil {
+				return err
+			}
+			w.WriteByte('\n')
+		}
+	}
+
+	if b := m.GetUnknown(); len(b) > 0 {
+		w.writeUnknownFields(b)
+	}
+	return w.writeExtensions(m)
+}
+
+func (w *textWriter) writeSingularValue(v protoreflect.Value, fd protoreflect.FieldDescriptor) error {
+	switch fd.Kind() {
+	case protoreflect.FloatKind, protoreflect.DoubleKind:
+		switch vf := v.Float(); {
+		case math.IsInf(vf, +1):
+			w.Write(posInf)
+		case math.IsInf(vf, -1):
+			w.Write(negInf)
+		case math.IsNaN(vf):
+			w.Write(nan)
+		default:
+			fmt.Fprint(w, v.Interface())
+		}
+	case protoreflect.StringKind:
+		// NOTE: This does not validate UTF-8 for historical reasons.
+		w.writeQuotedString(string(v.String()))
+	case protoreflect.BytesKind:
+		w.writeQuotedString(string(v.Bytes()))
+	case protoreflect.MessageKind, protoreflect.GroupKind:
+		var bra, ket byte = '<', '>'
+		if fd.Kind() == protoreflect.GroupKind {
+			bra, ket = '{', '}'
+		}
+		w.WriteByte(bra)
+		if !w.compact {
+			w.WriteByte('\n')
+		}
+		w.indent++
+		m := v.Message()
+		if m2, ok := m.Interface().(encoding.TextMarshaler); ok {
+			b, err := m2.MarshalText()
+			if err != nil {
+				return err
+			}
+			w.Write(b)
+		} else {
+			w.writeMessage(m)
+		}
+		w.indent--
+		w.WriteByte(ket)
+	case protoreflect.EnumKind:
+		if ev := fd.Enum().Values().ByNumber(v.Enum()); ev != nil {
+			fmt.Fprint(w, ev.Name())
+		} else {
+			fmt.Fprint(w, v.Enum())
+		}
+	default:
+		fmt.Fprint(w, v.Interface())
+	}
+	return nil
+}
+
+// writeQuotedString writes a quoted string in the protocol buffer text format.
+func (w *textWriter) writeQuotedString(s string) {
+	w.WriteByte('"')
+	for i := 0; i < len(s); i++ {
+		switch c := s[i]; c {
+		case '\n':
+			w.buf = append(w.buf, `\n`...)
+		case '\r':
+			w.buf = append(w.buf, `\r`...)
+		case '\t':
+			w.buf = append(w.buf, `\t`...)
+		case '"':
+			w.buf = append(w.buf, `\"`...)
+		case '\\':
+			w.buf = append(w.buf, `\\`...)
+		default:
+			if isPrint := c >= 0x20 && c < 0x7f; isPrint {
+				w.buf = append(w.buf, c)
+			} else {
+				w.buf = append(w.buf, fmt.Sprintf(`\%03o`, c)...)
+			}
+		}
+	}
+	w.WriteByte('"')
+}
+
+func (w *textWriter) writeUnknownFields(b []byte) {
+	if !w.compact {
+		fmt.Fprintf(w, "/* %d unknown bytes */\n", len(b))
+	}
+
+	for len(b) > 0 {
+		num, wtyp, n := protowire.ConsumeTag(b)
+		if n < 0 {
+			return
+		}
+		b = b[n:]
+
+		if wtyp == protowire.EndGroupType {
+			w.indent--
+			w.Write(endBraceNewline)
+			continue
+		}
+		fmt.Fprint(w, num)
+		if wtyp != protowire.StartGroupType {
+			w.WriteByte(':')
+		}
+		if !w.compact || wtyp == protowire.StartGroupType {
+			w.WriteByte(' ')
+		}
+		switch wtyp {
+		case protowire.VarintType:
+			v, n := protowire.ConsumeVarint(b)
+			if n < 0 {
+				return
+			}
+			b = b[n:]
+			fmt.Fprint(w, v)
+		case protowire.Fixed32Type:
+			v, n := protowire.ConsumeFixed32(b)
+			if n < 0 {
+				return
+			}
+			b = b[n:]
+			fmt.Fprint(w, v)
+		case protowire.Fixed64Type:
+			v, n := protowire.ConsumeFixed64(b)
+			if n < 0 {
+				return
+			}
+			b = b[n:]
+			fmt.Fprint(w, v)
+		case protowire.BytesType:
+			v, n := protowire.ConsumeBytes(b)
+			if n < 0 {
+				return
+			}
+			b = b[n:]
+			fmt.Fprintf(w, "%q", v)
+		case protowire.StartGroupType:
+			w.WriteByte('{')
+			w.indent++
+		default:
+			fmt.Fprintf(w, "/* unknown wire type %d */", wtyp)
+		}
+		w.WriteByte('\n')
+	}
+}
+
+// writeExtensions writes all the extensions in m.
+func (w *textWriter) writeExtensions(m protoreflect.Message) error {
+	md := m.Descriptor()
+	if md.ExtensionRanges().Len() == 0 {
+		return nil
+	}
+
+	type ext struct {
+		desc protoreflect.FieldDescriptor
+		val  protoreflect.Value
+	}
+	var exts []ext
+	m.Range(func(fd protoreflect.FieldDescriptor, v protoreflect.Value) bool {
+		if fd.IsExtension() {
+			exts = append(exts, ext{fd, v})
+		}
+		return true
+	})
+	sort.Slice(exts, func(i, j int) bool {
+		return exts[i].desc.Number() < exts[j].desc.Number()
+	})
+
+	for _, ext := range exts {
+		// For message set, use the name of the message as the extension name.
+		name := string(ext.desc.FullName())
+		if isMessageSet(ext.desc.ContainingMessage()) {
+			name = strings.TrimSuffix(name, ".message_set_extension")
+		}
+
+		if !ext.desc.IsList() {
+			if err := w.writeSingularExtension(name, ext.val, ext.desc); err != nil {
+				return err
+			}
+		} else {
+			lv := ext.val.List()
+			for i := 0; i < lv.Len(); i++ {
+				if err := w.writeSingularExtension(name, lv.Get(i), ext.desc); err != nil {
+					return err
+				}
+			}
+		}
+	}
+	return nil
+}
+
+func (w *textWriter) writeSingularExtension(name string, v protoreflect.Value, fd protoreflect.FieldDescriptor) error {
+	fmt.Fprintf(w, "[%s]:", name)
+	if !w.compact {
+		w.WriteByte(' ')
+	}
+	if err := w.writeSingularValue(v, fd); err != nil {
+		return err
+	}
+	w.WriteByte('\n')
+	return nil
+}
+
+func (w *textWriter) writeIndent() {
+	if !w.complete {
+		return
+	}
+	for i := 0; i < w.indent*2; i++ {
+		w.buf = append(w.buf, ' ')
+	}
+	w.complete = false
+}

vendor/github.com/golang/protobuf/proto/text_parser.go

@@ -1,880 +0,0 @@
-// Go support for Protocol Buffers - Google's data interchange format
-//
-// Copyright 2010 The Go Authors.  All rights reserved.
-// https://github.com/golang/protobuf
-//
-// Redistribution and use in source and binary forms, with or without
-// modification, are permitted provided that the following conditions are
-// met:
-//
-//     * Redistributions of source code must retain the above copyright
-// notice, this list of conditions and the following disclaimer.
-//     * Redistributions in binary form must reproduce the above
-// copyright notice, this list of conditions and the following disclaimer
-// in the documentation and/or other materials provided with the
-// distribution.
-//     * Neither the name of Google Inc. nor the names of its
-// contributors may be used to endorse or promote products derived from
-// this software without specific prior written permission.
-//
-// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-package proto
-
-// Functions for parsing the Text protocol buffer format.
-// TODO: message sets.
-
-import (
-	"encoding"
-	"errors"
-	"fmt"
-	"reflect"
-	"strconv"
-	"strings"
-	"unicode/utf8"
-)
-
-// Error string emitted when deserializing Any and fields are already set
-const anyRepeatedlyUnpacked = "Any message unpacked multiple times, or %q already set"
-
-type ParseError struct {
-	Message string
-	Line    int // 1-based line number
-	Offset  int // 0-based byte offset from start of input
-}
-
-func (p *ParseError) Error() string {
-	if p.Line == 1 {
-		// show offset only for first line
-		return fmt.Sprintf("line 1.%d: %v", p.Offset, p.Message)
-	}
-	return fmt.Sprintf("line %d: %v", p.Line, p.Message)
-}
-
-type token struct {
-	value    string
-	err      *ParseError
-	line     int    // line number
-	offset   int    // byte number from start of input, not start of line
-	unquoted string // the unquoted version of value, if it was a quoted string
-}
-
-func (t *token) String() string {
-	if t.err == nil {
-		return fmt.Sprintf("%q (line=%d, offset=%d)", t.value, t.line, t.offset)
-	}
-	return fmt.Sprintf("parse error: %v", t.err)
-}
-
-type textParser struct {
-	s            string // remaining input
-	done         bool   // whether the parsing is finished (success or error)
-	backed       bool   // whether back() was called
-	offset, line int
-	cur          token
-}
-
-func newTextParser(s string) *textParser {
-	p := new(textParser)
-	p.s = s
-	p.line = 1
-	p.cur.line = 1
-	return p
-}
-
-func (p *textParser) errorf(format string, a ...interface{}) *ParseError {
-	pe := &ParseError{fmt.Sprintf(format, a...), p.cur.line, p.cur.offset}
-	p.cur.err = pe
-	p.done = true
-	return pe
-}
-
-// Numbers and identifiers are matched by [-+._A-Za-z0-9]
-func isIdentOrNumberChar(c byte) bool {
-	switch {
-	case 'A' <= c && c <= 'Z', 'a' <= c && c <= 'z':
-		return true
-	case '0' <= c && c <= '9':
-		return true
-	}
-	switch c {
-	case '-', '+', '.', '_':
-		return true
-	}
-	return false
-}
-
-func isWhitespace(c byte) bool {
-	switch c {
-	case ' ', '\t', '\n', '\r':
-		return true
-	}
-	return false
-}
-
-func isQuote(c byte) bool {
-	switch c {
-	case '"', '\'':
-		return true
-	}
-	return false
-}
-
-func (p *textParser) skipWhitespace() {
-	i := 0
-	for i < len(p.s) && (isWhitespace(p.s[i]) || p.s[i] == '#') {
-		if p.s[i] == '#' {
-			// comment; skip to end of line or input
-			for i < len(p.s) && p.s[i] != '\n' {
-				i++
-			}
-			if i == len(p.s) {
-				break
-			}
-		}
-		if p.s[i] == '\n' {
-			p.line++
-		}
-		i++
-	}
-	p.offset += i
-	p.s = p.s[i:len(p.s)]
-	if len(p.s) == 0 {
-		p.done = true
-	}
-}
-
-func (p *textParser) advance() {
-	// Skip whitespace
-	p.skipWhitespace()
-	if p.done {
-		return
-	}
-
-	// Start of non-whitespace
-	p.cur.err = nil
-	p.cur.offset, p.cur.line = p.offset, p.line
-	p.cur.unquoted = ""
-	switch p.s[0] {
-	case '<', '>', '{', '}', ':', '[', ']', ';', ',', '/':
-		// Single symbol
-		p.cur.value, p.s = p.s[0:1], p.s[1:len(p.s)]
-	case '"', '\'':
-		// Quoted string
-		i := 1
-		for i < len(p.s) && p.s[i] != p.s[0] && p.s[i] != '\n' {
-			if p.s[i] == '\\' && i+1 < len(p.s) {
-				// skip escaped char
-				i++
-			}
-			i++
-		}
-		if i >= len(p.s) || p.s[i] != p.s[0] {
-			p.errorf("unmatched quote")
-			return
-		}
-		unq, err := unquoteC(p.s[1:i], rune(p.s[0]))
-		if err != nil {
-			p.errorf("invalid quoted string %s: %v", p.s[0:i+1], err)
-			return
-		}
-		p.cur.value, p.s = p.s[0:i+1], p.s[i+1:len(p.s)]
-		p.cur.unquoted = unq
-	default:
-		i := 0
-		for i < len(p.s) && isIdentOrNumberChar(p.s[i]) {
-			i++
-		}
-		if i == 0 {
-			p.errorf("unexpected byte %#x", p.s[0])
-			return
-		}
-		p.cur.value, p.s = p.s[0:i], p.s[i:len(p.s)]
-	}
-	p.offset += len(p.cur.value)
-}
-
-var (
-	errBadUTF8 = errors.New("proto: bad UTF-8")
-)
-
-func unquoteC(s string, quote rune) (string, error) {
-	// This is based on C++'s tokenizer.cc.
-	// Despite its name, this is *not* parsing C syntax.
-	// For instance, "\0" is an invalid quoted string.
-
-	// Avoid allocation in trivial cases.
-	simple := true
-	for _, r := range s {
-		if r == '\\' || r == quote {
-			simple = false
-			break
-		}
-	}
-	if simple {
-		return s, nil
-	}
-
-	buf := make([]byte, 0, 3*len(s)/2)
-	for len(s) > 0 {
-		r, n := utf8.DecodeRuneInString(s)
-		if r == utf8.RuneError && n == 1 {
-			return "", errBadUTF8
-		}
-		s = s[n:]
-		if r != '\\' {
-			if r < utf8.RuneSelf {
-				buf = append(buf, byte(r))
-			} else {
-				buf = append(buf, string(r)...)
-			}
-			continue
-		}
-
-		ch, tail, err := unescape(s)
-		if err != nil {
-			return "", err
-		}
-		buf = append(buf, ch...)
-		s = tail
-	}
-	return string(buf), nil
-}
-
-func unescape(s string) (ch string, tail string, err error) {
-	r, n := utf8.DecodeRuneInString(s)
-	if r == utf8.RuneError && n == 1 {
-		return "", "", errBadUTF8
-	}
-	s = s[n:]
-	switch r {
-	case 'a':
-		return "\a", s, nil
-	case 'b':
-		return "\b", s, nil
-	case 'f':
-		return "\f", s, nil
-	case 'n':
-		return "\n", s, nil
-	case 'r':
-		return "\r", s, nil
-	case 't':
-		return "\t", s, nil
-	case 'v':
-		return "\v", s, nil
-	case '?':
-		return "?", s, nil // trigraph workaround
-	case '\'', '"', '\\':
-		return string(r), s, nil
-	case '0', '1', '2', '3', '4', '5', '6', '7':
-		if len(s) < 2 {
-			return "", "", fmt.Errorf(`\%c requires 2 following digits`, r)
-		}
-		ss := string(r) + s[:2]
-		s = s[2:]
-		i, err := strconv.ParseUint(ss, 8, 8)
-		if err != nil {
-			return "", "", fmt.Errorf(`\%s contains non-octal digits`, ss)
-		}
-		return string([]byte{byte(i)}), s, nil
-	case 'x', 'X', 'u', 'U':
-		var n int
-		switch r {
-		case 'x', 'X':
-			n = 2
-		case 'u':
-			n = 4
-		case 'U':
-			n = 8
-		}
-		if len(s) < n {
-			return "", "", fmt.Errorf(`\%c requires %d following digits`, r, n)
-		}
-		ss := s[:n]
-		s = s[n:]
-		i, err := strconv.ParseUint(ss, 16, 64)
-		if err != nil {
-			return "", "", fmt.Errorf(`\%c%s contains non-hexadecimal digits`, r, ss)
-		}
-		if r == 'x' || r == 'X' {
-			return string([]byte{byte(i)}), s, nil
-		}
-		if i > utf8.MaxRune {
-			return "", "", fmt.Errorf(`\%c%s is not a valid Unicode code point`, r, ss)
-		}
-		return string(i), s, nil
-	}
-	return "", "", fmt.Errorf(`unknown escape \%c`, r)
-}
-
-// Back off the parser by one token. Can only be done between calls to next().
-// It makes the next advance() a no-op.
-func (p *textParser) back() { p.backed = true }
-
-// Advances the parser and returns the new current token.
-func (p *textParser) next() *token {
-	if p.backed || p.done {
-		p.backed = false
-		return &p.cur
-	}
-	p.advance()
-	if p.done {
-		p.cur.value = ""
-	} else if len(p.cur.value) > 0 && isQuote(p.cur.value[0]) {
-		// Look for multiple quoted strings separated by whitespace,
-		// and concatenate them.
-		cat := p.cur
-		for {
-			p.skipWhitespace()
-			if p.done || !isQuote(p.s[0]) {
-				break
-			}
-			p.advance()
-			if p.cur.err != nil {
-				return &p.cur
-			}
-			cat.value += " " + p.cur.value
-			cat.unquoted += p.cur.unquoted
-		}
-		p.done = false // parser may have seen EOF, but we want to return cat
-		p.cur = cat
-	}
-	return &p.cur
-}
-
-func (p *textParser) consumeToken(s string) error {
-	tok := p.next()
-	if tok.err != nil {
-		return tok.err
-	}
-	if tok.value != s {
-		p.back()
-		return p.errorf("expected %q, found %q", s, tok.value)
-	}
-	return nil
-}
-
-// Return a RequiredNotSetError indicating which required field was not set.
-func (p *textParser) missingRequiredFieldError(sv reflect.Value) *RequiredNotSetError {
-	st := sv.Type()
-	sprops := GetProperties(st)
-	for i := 0; i < st.NumField(); i++ {
-		if !isNil(sv.Field(i)) {
-			continue
-		}
-
-		props := sprops.Prop[i]
-		if props.Required {
-			return &RequiredNotSetError{fmt.Sprintf("%v.%v", st, props.OrigName)}
-		}
-	}
-	return &RequiredNotSetError{fmt.Sprintf("%v.<unknown field name>", st)} // should not happen
-}
-
-// Returns the index in the struct for the named field, as well as the parsed tag properties.
-func structFieldByName(sprops *StructProperties, name string) (int, *Properties, bool) {
-	i, ok := sprops.decoderOrigNames[name]
-	if ok {
-		return i, sprops.Prop[i], true
-	}
-	return -1, nil, false
-}
-
-// Consume a ':' from the input stream (if the next token is a colon),
-// returning an error if a colon is needed but not present.
-func (p *textParser) checkForColon(props *Properties, typ reflect.Type) *ParseError {
-	tok := p.next()
-	if tok.err != nil {
-		return tok.err
-	}
-	if tok.value != ":" {
-		// Colon is optional when the field is a group or message.
-		needColon := true
-		switch props.Wire {
-		case "group":
-			needColon = false
-		case "bytes":
-			// A "bytes" field is either a message, a string, or a repeated field;
-			// those three become *T, *string and []T respectively, so we can check for
-			// this field being a pointer to a non-string.
-			if typ.Kind() == reflect.Ptr {
-				// *T or *string
-				if typ.Elem().Kind() == reflect.String {
-					break
-				}
-			} else if typ.Kind() == reflect.Slice {
-				// []T or []*T
-				if typ.Elem().Kind() != reflect.Ptr {
-					break
-				}
-			} else if typ.Kind() == reflect.String {
-				// The proto3 exception is for a string field,
-				// which requires a colon.
-				break
-			}
-			needColon = false
-		}
-		if needColon {
-			return p.errorf("expected ':', found %q", tok.value)
-		}
-		p.back()
-	}
-	return nil
-}
-
-func (p *textParser) readStruct(sv reflect.Value, terminator string) error {
-	st := sv.Type()
-	sprops := GetProperties(st)
-	reqCount := sprops.reqCount
-	var reqFieldErr error
-	fieldSet := make(map[string]bool)
-	// A struct is a sequence of "name: value", terminated by one of
-	// '>' or '}', or the end of the input.  A name may also be
-	// "[extension]" or "[type/url]".
-	//
-	// The whole struct can also be an expanded Any message, like:
-	// [type/url] < ... struct contents ... >
-	for {
-		tok := p.next()
-		if tok.err != nil {
-			return tok.err
-		}
-		if tok.value == terminator {
-			break
-		}
-		if tok.value == "[" {
-			// Looks like an extension or an Any.
-			//
-			// TODO: Check whether we need to handle
-			// namespace rooted names (e.g. ".something.Foo").
-			extName, err := p.consumeExtName()
-			if err != nil {
-				return err
-			}
-
-			if s := strings.LastIndex(extName, "/"); s >= 0 {
-				// If it contains a slash, it's an Any type URL.
-				messageName := extName[s+1:]
-				mt := MessageType(messageName)
-				if mt == nil {
-					return p.errorf("unrecognized message %q in google.protobuf.Any", messageName)
-				}
-				tok = p.next()
-				if tok.err != nil {
-					return tok.err
-				}
-				// consume an optional colon
-				if tok.value == ":" {
-					tok = p.next()
-					if tok.err != nil {
-						return tok.err
-					}
-				}
-				var terminator string
-				switch tok.value {
-				case "<":
-					terminator = ">"
-				case "{":
-					terminator = "}"
-				default:
-					return p.errorf("expected '{' or '<', found %q", tok.value)
-				}
-				v := reflect.New(mt.Elem())
-				if pe := p.readStruct(v.Elem(), terminator); pe != nil {
-					return pe
-				}
-				b, err := Marshal(v.Interface().(Message))
-				if err != nil {
-					return p.errorf("failed to marshal message of type %q: %v", messageName, err)
-				}
-				if fieldSet["type_url"] {
-					return p.errorf(anyRepeatedlyUnpacked, "type_url")
-				}
-				if fieldSet["value"] {
-					return p.errorf(anyRepeatedlyUnpacked, "value")
-				}
-				sv.FieldByName("TypeUrl").SetString(extName)
-				sv.FieldByName("Value").SetBytes(b)
-				fieldSet["type_url"] = true
-				fieldSet["value"] = true
-				continue
-			}
-
-			var desc *ExtensionDesc
-			// This could be faster, but it's functional.
-			// TODO: Do something smarter than a linear scan.
-			for _, d := range RegisteredExtensions(reflect.New(st).Interface().(Message)) {
-				if d.Name == extName {
-					desc = d
-					break
-				}
-			}
-			if desc == nil {
-				return p.errorf("unrecognized extension %q", extName)
-			}
-
-			props := &Properties{}
-			props.Parse(desc.Tag)
-
-			typ := reflect.TypeOf(desc.ExtensionType)
-			if err := p.checkForColon(props, typ); err != nil {
-				return err
-			}
-
-			rep := desc.repeated()
-
-			// Read the extension structure, and set it in
-			// the value we're constructing.
-			var ext reflect.Value
-			if !rep {
-				ext = reflect.New(typ).Elem()
-			} else {
-				ext = reflect.New(typ.Elem()).Elem()
-			}
-			if err := p.readAny(ext, props); err != nil {
-				if _, ok := err.(*RequiredNotSetError); !ok {
-					return err
-				}
-				reqFieldErr = err
-			}
-			ep := sv.Addr().Interface().(Message)
-			if !rep {
-				SetExtension(ep, desc, ext.Interface())
-			} else {
-				old, err := GetExtension(ep, desc)
-				var sl reflect.Value
-				if err == nil {
-					sl = reflect.ValueOf(old) // existing slice
-				} else {
-					sl = reflect.MakeSlice(typ, 0, 1)
-				}
-				sl = reflect.Append(sl, ext)
-				SetExtension(ep, desc, sl.Interface())
-			}
-			if err := p.consumeOptionalSeparator(); err != nil {
-				return err
-			}
-			continue
-		}
-
-		// This is a normal, non-extension field.
-		name := tok.value
-		var dst reflect.Value
-		fi, props, ok := structFieldByName(sprops, name)
-		if ok {
-			dst = sv.Field(fi)
-		} else if oop, ok := sprops.OneofTypes[name]; ok {
-			// It is a oneof.
-			props = oop.Prop
-			nv := reflect.New(oop.Type.Elem())
-			dst = nv.Elem().Field(0)
-			field := sv.Field(oop.Field)
-			if !field.IsNil() {
-				return p.errorf("field '%s' would overwrite already parsed oneof '%s'", name, sv.Type().Field(oop.Field).Name)
-			}
-			field.Set(nv)
-		}
-		if !dst.IsValid() {
-			return p.errorf("unknown field name %q in %v", name, st)
-		}
-
-		if dst.Kind() == reflect.Map {
-			// Consume any colon.
-			if err := p.checkForColon(props, dst.Type()); err != nil {
-				return err
-			}
-
-			// Construct the map if it doesn't already exist.
-			if dst.IsNil() {
-				dst.Set(reflect.MakeMap(dst.Type()))
-			}
-			key := reflect.New(dst.Type().Key()).Elem()
-			val := reflect.New(dst.Type().Elem()).Elem()
-
-			// The map entry should be this sequence of tokens:
-			//	< key : KEY value : VALUE >
-			// However, implementations may omit key or value, and technically
-			// we should support them in any order.  See b/28924776 for a time
-			// this went wrong.
-
-			tok := p.next()
-			var terminator string
-			switch tok.value {
-			case "<":
-				terminator = ">"
-			case "{":
-				terminator = "}"
-			default:
-				return p.errorf("expected '{' or '<', found %q", tok.value)
-			}
-			for {
-				tok := p.next()
-				if tok.err != nil {
-					return tok.err
-				}
-				if tok.value == terminator {
-					break
-				}
-				switch tok.value {
-				case "key":
-					if err := p.consumeToken(":"); err != nil {
-						return err
-					}
-					if err := p.readAny(key, props.MapKeyProp); err != nil {
-						return err
-					}
-					if err := p.consumeOptionalSeparator(); err != nil {
-						return err
-					}
-				case "value":
-					if err := p.checkForColon(props.MapValProp, dst.Type().Elem()); err != nil {
-						return err
-					}
-					if err := p.readAny(val, props.MapValProp); err != nil {
-						return err
-					}
-					if err := p.consumeOptionalSeparator(); err != nil {
-						return err
-					}
-				default:
-					p.back()
-					return p.errorf(`expected "key", "value", or %q, found %q`, terminator, tok.value)
-				}
-			}
-
-			dst.SetMapIndex(key, val)
-			continue
-		}
-
-		// Check that it's not already set if it's not a repeated field.
-		if !props.Repeated && fieldSet[name] {
-			return p.errorf("non-repeated field %q was repeated", name)
-		}
-
-		if err := p.checkForColon(props, dst.Type()); err != nil {
-			return err
-		}
-
-		// Parse into the field.
-		fieldSet[name] = true
-		if err := p.readAny(dst, props); err != nil {
-			if _, ok := err.(*RequiredNotSetError); !ok {
-				return err
-			}
-			reqFieldErr = err
-		}
-		if props.Required {
-			reqCount--
-		}
-
-		if err := p.consumeOptionalSeparator(); err != nil {
-			return err
-		}
-
-	}
-
-	if reqCount > 0 {
-		return p.missingRequiredFieldError(sv)
-	}
-	return reqFieldErr
-}
-
-// consumeExtName consumes extension name or expanded Any type URL and the
-// following ']'. It returns the name or URL consumed.
-func (p *textParser) consumeExtName() (string, error) {
-	tok := p.next()
-	if tok.err != nil {
-		return "", tok.err
-	}
-
-	// If extension name or type url is quoted, it's a single token.
-	if len(tok.value) > 2 && isQuote(tok.value[0]) && tok.value[len(tok.value)-1] == tok.value[0] {
-		name, err := unquoteC(tok.value[1:len(tok.value)-1], rune(tok.value[0]))
-		if err != nil {
-			return "", err
-		}
-		return name, p.consumeToken("]")
-	}
-
-	// Consume everything up to "]"
-	var parts []string
-	for tok.value != "]" {
-		parts = append(parts, tok.value)
-		tok = p.next()
-		if tok.err != nil {
-			return "", p.errorf("unrecognized type_url or extension name: %s", tok.err)
-		}
-		if p.done && tok.value != "]" {
-			return "", p.errorf("unclosed type_url or extension name")
-		}
-	}
-	return strings.Join(parts, ""), nil
-}
-
-// consumeOptionalSeparator consumes an optional semicolon or comma.
-// It is used in readStruct to provide backward compatibility.
-func (p *textParser) consumeOptionalSeparator() error {
-	tok := p.next()
-	if tok.err != nil {
-		return tok.err
-	}
-	if tok.value != ";" && tok.value != "," {
-		p.back()
-	}
-	return nil
-}
-
-func (p *textParser) readAny(v reflect.Value, props *Properties) error {
-	tok := p.next()
-	if tok.err != nil {
-		return tok.err
-	}
-	if tok.value == "" {
-		return p.errorf("unexpected EOF")
-	}
-
-	switch fv := v; fv.Kind() {
-	case reflect.Slice:
-		at := v.Type()
-		if at.Elem().Kind() == reflect.Uint8 {
-			// Special case for []byte
-			if tok.value[0] != '"' && tok.value[0] != '\'' {
-				// Deliberately written out here, as the error after
-				// this switch statement would write "invalid []byte: ...",
-				// which is not as user-friendly.
-				return p.errorf("invalid string: %v", tok.value)
-			}
-			bytes := []byte(tok.unquoted)
-			fv.Set(reflect.ValueOf(bytes))
-			return nil
-		}
-		// Repeated field.
-		if tok.value == "[" {
-			// Repeated field with list notation, like [1,2,3].
-			for {
-				fv.Set(reflect.Append(fv, reflect.New(at.Elem()).Elem()))
-				err := p.readAny(fv.Index(fv.Len()-1), props)
-				if err != nil {
-					return err
-				}
-				tok := p.next()
-				if tok.err != nil {
-					return tok.err
-				}
-				if tok.value == "]" {
-					break
-				}
-				if tok.value != "," {
-					return p.errorf("Expected ']' or ',' found %q", tok.value)
-				}
-			}
-			return nil
-		}
-		// One value of the repeated field.
-		p.back()
-		fv.Set(reflect.Append(fv, reflect.New(at.Elem()).Elem()))
-		return p.readAny(fv.Index(fv.Len()-1), props)
-	case reflect.Bool:
-		// true/1/t/True or false/f/0/False.
-		switch tok.value {
-		case "true", "1", "t", "True":
-			fv.SetBool(true)
-			return nil
-		case "false", "0", "f", "False":
-			fv.SetBool(false)
-			return nil
-		}
-	case reflect.Float32, reflect.Float64:
-		v := tok.value
-		// Ignore 'f' for compatibility with output generated by C++, but don't
-		// remove 'f' when the value is "-inf" or "inf".
-		if strings.HasSuffix(v, "f") && tok.value != "-inf" && tok.value != "inf" {
-			v = v[:len(v)-1]
-		}
-		if f, err := strconv.ParseFloat(v, fv.Type().Bits()); err == nil {
-			fv.SetFloat(f)
-			return nil
-		}
-	case reflect.Int32:
-		if x, err := strconv.ParseInt(tok.value, 0, 32); err == nil {
-			fv.SetInt(x)
-			return nil
-		}
-
-		if len(props.Enum) == 0 {
-			break
-		}
-		m, ok := enumValueMaps[props.Enum]
-		if !ok {
-			break
-		}
-		x, ok := m[tok.value]
-		if !ok {
-			break
-		}
-		fv.SetInt(int64(x))
-		return nil
-	case reflect.Int64:
-		if x, err := strconv.ParseInt(tok.value, 0, 64); err == nil {
-			fv.SetInt(x)
-			return nil
-		}
-
-	case reflect.Ptr:
-		// A basic field (indirected through pointer), or a repeated message/group
-		p.back()
-		fv.Set(reflect.New(fv.Type().Elem()))
-		return p.readAny(fv.Elem(), props)
-	case reflect.String:
-		if tok.value[0] == '"' || tok.value[0] == '\'' {
-			fv.SetString(tok.unquoted)
-			return nil
-		}
-	case reflect.Struct:
-		var terminator string
-		switch tok.value {
-		case "{":
-			terminator = "}"
-		case "<":
-			terminator = ">"
-		default:
-			return p.errorf("expected '{' or '<', found %q", tok.value)
-		}
-		// TODO: Handle nested messages which implement encoding.TextUnmarshaler.
-		return p.readStruct(fv, terminator)
-	case reflect.Uint32:
-		if x, err := strconv.ParseUint(tok.value, 0, 32); err == nil {
-			fv.SetUint(uint64(x))
-			return nil
-		}
-	case reflect.Uint64:
-		if x, err := strconv.ParseUint(tok.value, 0, 64); err == nil {
-			fv.SetUint(x)
-			return nil
-		}
-	}
-	return p.errorf("invalid %v: %v", v.Type(), tok.value)
-}
-
-// UnmarshalText reads a protocol buffer in Text format. UnmarshalText resets pb
-// before starting to unmarshal, so any existing data in pb is always removed.
-// If a required field is not set and no other error occurs,
-// UnmarshalText returns *RequiredNotSetError.
-func UnmarshalText(s string, pb Message) error {
-	if um, ok := pb.(encoding.TextUnmarshaler); ok {
-		return um.UnmarshalText([]byte(s))
-	}
-	pb.Reset()
-	v := reflect.ValueOf(pb)
-	return newTextParser(s).readStruct(v.Elem(), "")
-}

vendor/github.com/golang/protobuf/proto/wire.go

@@ -0,0 +1,78 @@
+// Copyright 2019 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package proto
+
+import (
+	protoV2 "google.golang.org/protobuf/proto"
+	"google.golang.org/protobuf/runtime/protoiface"
+)
+
+// Size returns the size in bytes of the wire-format encoding of m.
+func Size(m Message) int {
+	if m == nil {
+		return 0
+	}
+	mi := MessageV2(m)
+	return protoV2.Size(mi)
+}
+
+// Marshal returns the wire-format encoding of m.
+func Marshal(m Message) ([]byte, error) {
+	b, err := marshalAppend(nil, m, false)
+	if b == nil {
+		b = zeroBytes
+	}
+	return b, err
+}
+
+var zeroBytes = make([]byte, 0, 0)
+
+func marshalAppend(buf []byte, m Message, deterministic bool) ([]byte, error) {
+	if m == nil {
+		return nil, ErrNil
+	}
+	mi := MessageV2(m)
+	nbuf, err := protoV2.MarshalOptions{
+		Deterministic: deterministic,
+		AllowPartial:  true,
+	}.MarshalAppend(buf, mi)
+	if err != nil {
+		return buf, err
+	}
+	if len(buf) == len(nbuf) {
+		if !mi.ProtoReflect().IsValid() {
+			return buf, ErrNil
+		}
+	}
+	return nbuf, checkRequiredNotSet(mi)
+}
+
+// Unmarshal parses a wire-format message in b and places the decoded results in m.
+//
+// Unmarshal resets m before starting to unmarshal, so any existing data in m is always
+// removed. Use UnmarshalMerge to preserve and append to existing data.
+func Unmarshal(b []byte, m Message) error {
+	m.Reset()
+	return UnmarshalMerge(b, m)
+}
+
+// UnmarshalMerge parses a wire-format message in b and places the decoded results in m.
+func UnmarshalMerge(b []byte, m Message) error {
+	mi := MessageV2(m)
+	out, err := protoV2.UnmarshalOptions{
+		AllowPartial: true,
+		Merge:        true,
+	}.UnmarshalState(protoiface.UnmarshalInput{
+		Buf:     b,
+		Message: mi.ProtoReflect(),
+	})
+	if err != nil {
+		return err
+	}
+	if out.Flags&protoiface.UnmarshalInitialized > 0 {
+		return nil
+	}
+	return checkRequiredNotSet(mi)
+}

vendor/github.com/golang/protobuf/proto/wrappers.go

@@ -0,0 +1,34 @@
+// Copyright 2019 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package proto
+
+// Bool stores v in a new bool value and returns a pointer to it.
+func Bool(v bool) *bool { return &v }
+
+// Int stores v in a new int32 value and returns a pointer to it.
+//
+// Deprecated: Use Int32 instead.
+func Int(v int) *int32 { return Int32(int32(v)) }
+
+// Int32 stores v in a new int32 value and returns a pointer to it.
+func Int32(v int32) *int32 { return &v }
+
+// Int64 stores v in a new int64 value and returns a pointer to it.
+func Int64(v int64) *int64 { return &v }
+
+// Uint32 stores v in a new uint32 value and returns a pointer to it.
+func Uint32(v uint32) *uint32 { return &v }
+
+// Uint64 stores v in a new uint64 value and returns a pointer to it.
+func Uint64(v uint64) *uint64 { return &v }
+
+// Float32 stores v in a new float32 value and returns a pointer to it.
+func Float32(v float32) *float32 { return &v }
+
+// Float64 stores v in a new float64 value and returns a pointer to it.
+func Float64(v float64) *float64 { return &v }
+
+// String stores v in a new string value and returns a pointer to it.
+func String(v string) *string { return &v }

vendor/github.com/golang/protobuf/ptypes/any.go

@@ -1,141 +1,165 @@
-// Go support for Protocol Buffers - Google's data interchange format
+// Copyright 2016 The Go Authors. All rights reserved.
-//
+// Use of this source code is governed by a BSD-style
-// Copyright 2016 The Go Authors.  All rights reserved.
+// license that can be found in the LICENSE file.
-// https://github.com/golang/protobuf
-//
-// Redistribution and use in source and binary forms, with or without
-// modification, are permitted provided that the following conditions are
-// met:
-//
-//     * Redistributions of source code must retain the above copyright
-// notice, this list of conditions and the following disclaimer.
-//     * Redistributions in binary form must reproduce the above
-// copyright notice, this list of conditions and the following disclaimer
-// in the documentation and/or other materials provided with the
-// distribution.
-//     * Neither the name of Google Inc. nor the names of its
-// contributors may be used to endorse or promote products derived from
-// this software without specific prior written permission.
-//
-// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 package ptypes
 
-// This file implements functions to marshal proto.Message to/from
-// google.protobuf.Any message.
-
 import (
 	"fmt"
-	"reflect"
 	"strings"
 
 	"github.com/golang/protobuf/proto"
-	"github.com/golang/protobuf/ptypes/any"
+	"google.golang.org/protobuf/reflect/protoreflect"
+	"google.golang.org/protobuf/reflect/protoregistry"
+
+	anypb "github.com/golang/protobuf/ptypes/any"
 )
 
-const googleApis = "type.googleapis.com/"
+const urlPrefix = "type.googleapis.com/"
 
-// AnyMessageName returns the name of the message contained in a google.protobuf.Any message.
+// AnyMessageName returns the message name contained in an anypb.Any message.
-//
+// Most type assertions should use the Is function instead.
-// Note that regular type assertions should be done using the Is
+func AnyMessageName(any *anypb.Any) (string, error) {
-// function. AnyMessageName is provided for less common use cases like filtering a
+	name, err := anyMessageName(any)
-// sequence of Any messages based on a set of allowed message type names.
+	return string(name), err
-func AnyMessageName(any *any.Any) (string, error) {
+}
+func anyMessageName(any *anypb.Any) (protoreflect.FullName, error) {
 	if any == nil {
 		return "", fmt.Errorf("message is nil")
 	}
-	slash := strings.LastIndex(any.TypeUrl, "/")
+	name := protoreflect.FullName(any.TypeUrl)
-	if slash < 0 {
+	if i := strings.LastIndex(any.TypeUrl, "/"); i >= 0 {
+		name = name[i+len("/"):]
+	}
+	if !name.IsValid() {
 		return "", fmt.Errorf("message type url %q is invalid", any.TypeUrl)
 	}
-	return any.TypeUrl[slash+1:], nil
+	return name, nil
 }
 
-// MarshalAny takes the protocol buffer and encodes it into google.protobuf.Any.
+// MarshalAny marshals the given message m into an anypb.Any message.
-func MarshalAny(pb proto.Message) (*any.Any, error) {
+func MarshalAny(m proto.Message) (*anypb.Any, error) {
-	value, err := proto.Marshal(pb)
+	switch dm := m.(type) {
+	case DynamicAny:
+		m = dm.Message
+	case *DynamicAny:
+		if dm == nil {
+			return nil, proto.ErrNil
+		}
+		m = dm.Message
+	}
+	b, err := proto.Marshal(m)
 	if err != nil {
 		return nil, err
 	}
-	return &any.Any{TypeUrl: googleApis + proto.MessageName(pb), Value: value}, nil
+	return &anypb.Any{TypeUrl: urlPrefix + proto.MessageName(m), Value: b}, nil
 }
 
-// DynamicAny is a value that can be passed to UnmarshalAny to automatically
+// Empty returns a new message of the type specified in an anypb.Any message.
-// allocate a proto.Message for the type specified in a google.protobuf.Any
+// It returns protoregistry.NotFound if the corresponding message type could not
-// message. The allocated message is stored in the embedded proto.Message.
+// be resolved in the global registry.
-//
+func Empty(any *anypb.Any) (proto.Message, error) {
-// Example:
+	name, err := anyMessageName(any)
-//
-//   var x ptypes.DynamicAny
-//   if err := ptypes.UnmarshalAny(a, &x); err != nil { ... }
-//   fmt.Printf("unmarshaled message: %v", x.Message)
-type DynamicAny struct {
-	proto.Message
-}
-
-// Empty returns a new proto.Message of the type specified in a
-// google.protobuf.Any message. It returns an error if corresponding message
-// type isn't linked in.
-func Empty(any *any.Any) (proto.Message, error) {
-	aname, err := AnyMessageName(any)
 	if err != nil {
 		return nil, err
 	}
-
+	mt, err := protoregistry.GlobalTypes.FindMessageByName(name)
-	t := proto.MessageType(aname)
+	if err != nil {
-	if t == nil {
+		return nil, err
-		return nil, fmt.Errorf("any: message type %q isn't linked in", aname)
 	}
-	return reflect.New(t.Elem()).Interface().(proto.Message), nil
+	return proto.MessageV1(mt.New().Interface()), nil
 }
 
-// UnmarshalAny parses the protocol buffer representation in a google.protobuf.Any
+// UnmarshalAny unmarshals the encoded value contained in the anypb.Any message
-// message and places the decoded result in pb. It returns an error if type of
+// into the provided message m. It returns an error if the target message
-// contents of Any message does not match type of pb message.
+// does not match the type in the Any message or if an unmarshal error occurs.
 //
-// pb can be a proto.Message, or a *DynamicAny.
+// The target message m may be a *DynamicAny message. If the underlying message
-func UnmarshalAny(any *any.Any, pb proto.Message) error {
+// type could not be resolved, then this returns protoregistry.NotFound.
-	if d, ok := pb.(*DynamicAny); ok {
+func UnmarshalAny(any *anypb.Any, m proto.Message) error {
-		if d.Message == nil {
+	if dm, ok := m.(*DynamicAny); ok {
+		if dm.Message == nil {
 			var err error
-			d.Message, err = Empty(any)
+			dm.Message, err = Empty(any)
 			if err != nil {
 				return err
 			}
 		}
-		return UnmarshalAny(any, d.Message)
+		m = dm.Message
 	}
 
-	aname, err := AnyMessageName(any)
+	anyName, err := AnyMessageName(any)
 	if err != nil {
 		return err
 	}
-
+	msgName := proto.MessageName(m)
-	mname := proto.MessageName(pb)
+	if anyName != msgName {
-	if aname != mname {
+		return fmt.Errorf("mismatched message type: got %q want %q", anyName, msgName)
-		return fmt.Errorf("mismatched message type: got %q want %q", aname, mname)
 	}
-	return proto.Unmarshal(any.Value, pb)
+	return proto.Unmarshal(any.Value, m)
 }
 
-// Is returns true if any value contains a given message type.
+// Is reports whether the Any message contains a message of the specified type.
-func Is(any *any.Any, pb proto.Message) bool {
+func Is(any *anypb.Any, m proto.Message) bool {
-	// The following is equivalent to AnyMessageName(any) == proto.MessageName(pb),
+	if any == nil || m == nil {
-	// but it avoids scanning TypeUrl for the slash.
-	if any == nil {
 		return false
 	}
-	name := proto.MessageName(pb)
+	name := proto.MessageName(m)
-	prefix := len(any.TypeUrl) - len(name)
+	if !strings.HasSuffix(any.TypeUrl, name) {
-	return prefix >= 1 && any.TypeUrl[prefix-1] == '/' && any.TypeUrl[prefix:] == name
+		return false
+	}
+	return len(any.TypeUrl) == len(name) || any.TypeUrl[len(any.TypeUrl)-len(name)-1] == '/'
+}
+
+// DynamicAny is a value that can be passed to UnmarshalAny to automatically
+// allocate a proto.Message for the type specified in an anypb.Any message.
+// The allocated message is stored in the embedded proto.Message.
+//
+// Example:
+//   var x ptypes.DynamicAny
+//   if err := ptypes.UnmarshalAny(a, &x); err != nil { ... }
+//   fmt.Printf("unmarshaled message: %v", x.Message)
+type DynamicAny struct{ proto.Message }
+
+func (m DynamicAny) String() string {
+	if m.Message == nil {
+		return "<nil>"
+	}
+	return m.Message.String()
+}
+func (m DynamicAny) Reset() {
+	if m.Message == nil {
+		return
+	}
+	m.Message.Reset()
+}
+func (m DynamicAny) ProtoMessage() {
+	return
+}
+func (m DynamicAny) ProtoReflect() protoreflect.Message {
+	if m.Message == nil {
+		return nil
+	}
+	return dynamicAny{proto.MessageReflect(m.Message)}
+}
+
+type dynamicAny struct{ protoreflect.Message }
+
+func (m dynamicAny) Type() protoreflect.MessageType {
+	return dynamicAnyType{m.Message.Type()}
+}
+func (m dynamicAny) New() protoreflect.Message {
+	return dynamicAnyType{m.Message.Type()}.New()
+}
+func (m dynamicAny) Interface() protoreflect.ProtoMessage {
+	return DynamicAny{proto.MessageV1(m.Message.Interface())}
+}
+
+type dynamicAnyType struct{ protoreflect.MessageType }
+
+func (t dynamicAnyType) New() protoreflect.Message {
+	return dynamicAny{t.MessageType.New()}
+}
+func (t dynamicAnyType) Zero() protoreflect.Message {
+	return dynamicAny{t.MessageType.Zero()}
 }

vendor/github.com/golang/protobuf/ptypes/any/any.pb.go

@@ -1,203 +1,62 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
-// source: google/protobuf/any.proto
+// source: github.com/golang/protobuf/ptypes/any/any.proto
 
 package any
 
 import (
-	fmt "fmt"
+	protoreflect "google.golang.org/protobuf/reflect/protoreflect"
-	proto "github.com/golang/protobuf/proto"
+	protoimpl "google.golang.org/protobuf/runtime/protoimpl"
-	math "math"
+	anypb "google.golang.org/protobuf/types/known/anypb"
+	reflect "reflect"
 )
 
-// Reference imports to suppress errors if they are not otherwise used.
+// Symbols defined in public import of google/protobuf/any.proto.
-var _ = proto.Marshal
-var _ = fmt.Errorf
-var _ = math.Inf
 
-// This is a compile-time assertion to ensure that this generated file
+type Any = anypb.Any
-// is compatible with the proto package it is being compiled against.
-// A compilation error at this line likely means your copy of the
-// proto package needs to be updated.
-const _ = proto.ProtoPackageIsVersion3 // please upgrade the proto package
 
-// `Any` contains an arbitrary serialized protocol buffer message along with a
+var File_github_com_golang_protobuf_ptypes_any_any_proto protoreflect.FileDescriptor
-// URL that describes the type of the serialized message.
+
-//
+var file_github_com_golang_protobuf_ptypes_any_any_proto_rawDesc = []byte{
-// Protobuf library provides support to pack/unpack Any values in the form
+	0x0a, 0x2f, 0x67, 0x69, 0x74, 0x68, 0x75, 0x62, 0x2e, 0x63, 0x6f, 0x6d, 0x2f, 0x67, 0x6f, 0x6c,
-// of utility functions or additional generated methods of the Any type.
+	0x61, 0x6e, 0x67, 0x2f, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x62, 0x75, 0x66, 0x2f, 0x70, 0x74, 0x79,
-//
+	0x70, 0x65, 0x73, 0x2f, 0x61, 0x6e, 0x79, 0x2f, 0x61, 0x6e, 0x79, 0x2e, 0x70, 0x72, 0x6f, 0x74,
-// Example 1: Pack and unpack a message in C++.
+	0x6f, 0x1a, 0x19, 0x67, 0x6f, 0x6f, 0x67, 0x6c, 0x65, 0x2f, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x62,
-//
+	0x75, 0x66, 0x2f, 0x61, 0x6e, 0x79, 0x2e, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x42, 0x2b, 0x5a, 0x29,
-//     Foo foo = ...;
+	0x67, 0x69, 0x74, 0x68, 0x75, 0x62, 0x2e, 0x63, 0x6f, 0x6d, 0x2f, 0x67, 0x6f, 0x6c, 0x61, 0x6e,
-//     Any any;
+	0x67, 0x2f, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x62, 0x75, 0x66, 0x2f, 0x70, 0x74, 0x79, 0x70, 0x65,
-//     any.PackFrom(foo);
+	0x73, 0x2f, 0x61, 0x6e, 0x79, 0x3b, 0x61, 0x6e, 0x79, 0x50, 0x00, 0x62, 0x06, 0x70, 0x72, 0x6f,
-//     ...
+	0x74, 0x6f, 0x33,
-//     if (any.UnpackTo(&foo)) {
-//       ...
-//     }
-//
-// Example 2: Pack and unpack a message in Java.
-//
-//     Foo foo = ...;
-//     Any any = Any.pack(foo);
-//     ...
-//     if (any.is(Foo.class)) {
-//       foo = any.unpack(Foo.class);
-//     }
-//
-//  Example 3: Pack and unpack a message in Python.
-//
-//     foo = Foo(...)
-//     any = Any()
-//     any.Pack(foo)
-//     ...
-//     if any.Is(Foo.DESCRIPTOR):
-//       any.Unpack(foo)
-//       ...
-//
-//  Example 4: Pack and unpack a message in Go
-//
-//      foo := &pb.Foo{...}
-//      any, err := ptypes.MarshalAny(foo)
-//      ...
-//      foo := &pb.Foo{}
-//      if err := ptypes.UnmarshalAny(any, foo); err != nil {
-//        ...
-//      }
-//
-// The pack methods provided by protobuf library will by default use
-// 'type.googleapis.com/full.type.name' as the type URL and the unpack
-// methods only use the fully qualified type name after the last '/'
-// in the type URL, for example "foo.bar.com/x/y.z" will yield type
-// name "y.z".
-//
-//
-// JSON
-// ====
-// The JSON representation of an `Any` value uses the regular
-// representation of the deserialized, embedded message, with an
-// additional field `@type` which contains the type URL. Example:
-//
-//     package google.profile;
-//     message Person {
-//       string first_name = 1;
-//       string last_name = 2;
-//     }
-//
-//     {
-//       "@type": "type.googleapis.com/google.profile.Person",
-//       "firstName": <string>,
-//       "lastName": <string>
-//     }
-//
-// If the embedded message type is well-known and has a custom JSON
-// representation, that representation will be embedded adding a field
-// `value` which holds the custom JSON in addition to the `@type`
-// field. Example (for message [google.protobuf.Duration][]):
-//
-//     {
-//       "@type": "type.googleapis.com/google.protobuf.Duration",
-//       "value": "1.212s"
-//     }
-//
-type Any struct {
-	// A URL/resource name that uniquely identifies the type of the serialized
-	// protocol buffer message. This string must contain at least
-	// one "/" character. The last segment of the URL's path must represent
-	// the fully qualified name of the type (as in
-	// `path/google.protobuf.Duration`). The name should be in a canonical form
-	// (e.g., leading "." is not accepted).
-	//
-	// In practice, teams usually precompile into the binary all types that they
-	// expect it to use in the context of Any. However, for URLs which use the
-	// scheme `http`, `https`, or no scheme, one can optionally set up a type
-	// server that maps type URLs to message definitions as follows:
-	//
-	// * If no scheme is provided, `https` is assumed.
-	// * An HTTP GET on the URL must yield a [google.protobuf.Type][]
-	//   value in binary format, or produce an error.
-	// * Applications are allowed to cache lookup results based on the
-	//   URL, or have them precompiled into a binary to avoid any
-	//   lookup. Therefore, binary compatibility needs to be preserved
-	//   on changes to types. (Use versioned type names to manage
-	//   breaking changes.)
-	//
-	// Note: this functionality is not currently available in the official
-	// protobuf release, and it is not used for type URLs beginning with
-	// type.googleapis.com.
-	//
-	// Schemes other than `http`, `https` (or the empty scheme) might be
-	// used with implementation specific semantics.
-	//
-	TypeUrl string `protobuf:"bytes,1,opt,name=type_url,json=typeUrl,proto3" json:"type_url,omitempty"`
-	// Must be a valid serialized protocol buffer of the above specified type.
-	Value                []byte   `protobuf:"bytes,2,opt,name=value,proto3" json:"value,omitempty"`
-	XXX_NoUnkeyedLiteral struct{} `json:"-"`
-	XXX_unrecognized     []byte   `json:"-"`
-	XXX_sizecache        int32    `json:"-"`
 }
 
-func (m *Any) Reset()         { *m = Any{} }
+var file_github_com_golang_protobuf_ptypes_any_any_proto_goTypes = []interface{}{}
-func (m *Any) String() string { return proto.CompactTextString(m) }
+var file_github_com_golang_protobuf_ptypes_any_any_proto_depIdxs = []int32{
-func (*Any) ProtoMessage()    {}
+	0, // [0:0] is the sub-list for method output_type
-func (*Any) Descriptor() ([]byte, []int) {
+	0, // [0:0] is the sub-list for method input_type
-	return fileDescriptor_b53526c13ae22eb4, []int{0}
+	0, // [0:0] is the sub-list for extension type_name
+	0, // [0:0] is the sub-list for extension extendee
+	0, // [0:0] is the sub-list for field type_name
 }
 
-func (*Any) XXX_WellKnownType() string { return "Any" }
+func init() { file_github_com_golang_protobuf_ptypes_any_any_proto_init() }
-
+func file_github_com_golang_protobuf_ptypes_any_any_proto_init() {
-func (m *Any) XXX_Unmarshal(b []byte) error {
+	if File_github_com_golang_protobuf_ptypes_any_any_proto != nil {
-	return xxx_messageInfo_Any.Unmarshal(m, b)
+		return
-}
-func (m *Any) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
-	return xxx_messageInfo_Any.Marshal(b, m, deterministic)
-}
-func (m *Any) XXX_Merge(src proto.Message) {
-	xxx_messageInfo_Any.Merge(m, src)
-}
-func (m *Any) XXX_Size() int {
-	return xxx_messageInfo_Any.Size(m)
-}
-func (m *Any) XXX_DiscardUnknown() {
-	xxx_messageInfo_Any.DiscardUnknown(m)
-}
-
-var xxx_messageInfo_Any proto.InternalMessageInfo
-
-func (m *Any) GetTypeUrl() string {
-	if m != nil {
-		return m.TypeUrl
 	}
-	return ""
+	type x struct{}
-}
+	out := protoimpl.TypeBuilder{
-
+		File: protoimpl.DescBuilder{
-func (m *Any) GetValue() []byte {
+			GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
-	if m != nil {
+			RawDescriptor: file_github_com_golang_protobuf_ptypes_any_any_proto_rawDesc,
-		return m.Value
+			NumEnums:      0,
-	}
+			NumMessages:   0,
-	return nil
+			NumExtensions: 0,
-}
+			NumServices:   0,
-
+		},
-func init() {
+		GoTypes:           file_github_com_golang_protobuf_ptypes_any_any_proto_goTypes,
-	proto.RegisterType((*Any)(nil), "google.protobuf.Any")
+		DependencyIndexes: file_github_com_golang_protobuf_ptypes_any_any_proto_depIdxs,
-}
+	}.Build()
-
+	File_github_com_golang_protobuf_ptypes_any_any_proto = out.File
-func init() {
+	file_github_com_golang_protobuf_ptypes_any_any_proto_rawDesc = nil
-	proto.RegisterFile("google/protobuf/any.proto", fileDescriptor_b53526c13ae22eb4)
+	file_github_com_golang_protobuf_ptypes_any_any_proto_goTypes = nil
-}
+	file_github_com_golang_protobuf_ptypes_any_any_proto_depIdxs = nil
-
-var fileDescriptor_b53526c13ae22eb4 = []byte{
-	// 185 bytes of a gzipped FileDescriptorProto
-	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xff, 0xe2, 0x92, 0x4c, 0xcf, 0xcf, 0x4f,
-	0xcf, 0x49, 0xd5, 0x2f, 0x28, 0xca, 0x2f, 0xc9, 0x4f, 0x2a, 0x4d, 0xd3, 0x4f, 0xcc, 0xab, 0xd4,
-	0x03, 0x73, 0x84, 0xf8, 0x21, 0x52, 0x7a, 0x30, 0x29, 0x25, 0x33, 0x2e, 0x66, 0xc7, 0xbc, 0x4a,
-	0x21, 0x49, 0x2e, 0x8e, 0x92, 0xca, 0x82, 0xd4, 0xf8, 0xd2, 0xa2, 0x1c, 0x09, 0x46, 0x05, 0x46,
-	0x0d, 0xce, 0x20, 0x76, 0x10, 0x3f, 0xb4, 0x28, 0x47, 0x48, 0x84, 0x8b, 0xb5, 0x2c, 0x31, 0xa7,
-	0x34, 0x55, 0x82, 0x49, 0x81, 0x51, 0x83, 0x27, 0x08, 0xc2, 0x71, 0xca, 0xe7, 0x12, 0x4e, 0xce,
-	0xcf, 0xd5, 0x43, 0x33, 0xce, 0x89, 0xc3, 0x31, 0xaf, 0x32, 0x00, 0xc4, 0x09, 0x60, 0x8c, 0x52,
-	0x4d, 0xcf, 0x2c, 0xc9, 0x28, 0x4d, 0xd2, 0x4b, 0xce, 0xcf, 0xd5, 0x4f, 0xcf, 0xcf, 0x49, 0xcc,
-	0x4b, 0x47, 0xb8, 0xa8, 0x00, 0x64, 0x7a, 0x31, 0xc8, 0x61, 0x8b, 0x98, 0x98, 0xdd, 0x03, 0x9c,
-	0x56, 0x31, 0xc9, 0xb9, 0x43, 0x8c, 0x0a, 0x80, 0x2a, 0xd1, 0x0b, 0x4f, 0xcd, 0xc9, 0xf1, 0xce,
-	0xcb, 0x2f, 0xcf, 0x0b, 0x01, 0x29, 0x4d, 0x62, 0x03, 0xeb, 0x35, 0x06, 0x04, 0x00, 0x00, 0xff,
-	0xff, 0x13, 0xf8, 0xe8, 0x42, 0xdd, 0x00, 0x00, 0x00,
 }

vendor/github.com/golang/protobuf/ptypes/any/any.proto

@@ -1,155 +0,0 @@
-// Protocol Buffers - Google's data interchange format
-// Copyright 2008 Google Inc.  All rights reserved.
-// https://developers.google.com/protocol-buffers/
-//
-// Redistribution and use in source and binary forms, with or without
-// modification, are permitted provided that the following conditions are
-// met:
-//
-//     * Redistributions of source code must retain the above copyright
-// notice, this list of conditions and the following disclaimer.
-//     * Redistributions in binary form must reproduce the above
-// copyright notice, this list of conditions and the following disclaimer
-// in the documentation and/or other materials provided with the
-// distribution.
-//     * Neither the name of Google Inc. nor the names of its
-// contributors may be used to endorse or promote products derived from
-// this software without specific prior written permission.
-//
-// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-syntax = "proto3";
-
-package google.protobuf;
-
-option csharp_namespace = "Google.Protobuf.WellKnownTypes";
-option go_package = "github.com/golang/protobuf/ptypes/any";
-option java_package = "com.google.protobuf";
-option java_outer_classname = "AnyProto";
-option java_multiple_files = true;
-option objc_class_prefix = "GPB";
-
-// `Any` contains an arbitrary serialized protocol buffer message along with a
-// URL that describes the type of the serialized message.
-//
-// Protobuf library provides support to pack/unpack Any values in the form
-// of utility functions or additional generated methods of the Any type.
-//
-// Example 1: Pack and unpack a message in C++.
-//
-//     Foo foo = ...;
-//     Any any;
-//     any.PackFrom(foo);
-//     ...
-//     if (any.UnpackTo(&foo)) {
-//       ...
-//     }
-//
-// Example 2: Pack and unpack a message in Java.
-//
-//     Foo foo = ...;
-//     Any any = Any.pack(foo);
-//     ...
-//     if (any.is(Foo.class)) {
-//       foo = any.unpack(Foo.class);
-//     }
-//
-//  Example 3: Pack and unpack a message in Python.
-//
-//     foo = Foo(...)
-//     any = Any()
-//     any.Pack(foo)
-//     ...
-//     if any.Is(Foo.DESCRIPTOR):
-//       any.Unpack(foo)
-//       ...
-//
-//  Example 4: Pack and unpack a message in Go
-//
-//      foo := &pb.Foo{...}
-//      any, err := ptypes.MarshalAny(foo)
-//      ...
-//      foo := &pb.Foo{}
-//      if err := ptypes.UnmarshalAny(any, foo); err != nil {
-//        ...
-//      }
-//
-// The pack methods provided by protobuf library will by default use
-// 'type.googleapis.com/full.type.name' as the type URL and the unpack
-// methods only use the fully qualified type name after the last '/'
-// in the type URL, for example "foo.bar.com/x/y.z" will yield type
-// name "y.z".
-//
-//
-// JSON
-// ====
-// The JSON representation of an `Any` value uses the regular
-// representation of the deserialized, embedded message, with an
-// additional field `@type` which contains the type URL. Example:
-//
-//     package google.profile;
-//     message Person {
-//       string first_name = 1;
-//       string last_name = 2;
-//     }
-//
-//     {
-//       "@type": "type.googleapis.com/google.profile.Person",
-//       "firstName": <string>,
-//       "lastName": <string>
-//     }
-//
-// If the embedded message type is well-known and has a custom JSON
-// representation, that representation will be embedded adding a field
-// `value` which holds the custom JSON in addition to the `@type`
-// field. Example (for message [google.protobuf.Duration][]):
-//
-//     {
-//       "@type": "type.googleapis.com/google.protobuf.Duration",
-//       "value": "1.212s"
-//     }
-//
-message Any {
-  // A URL/resource name that uniquely identifies the type of the serialized
-  // protocol buffer message. This string must contain at least
-  // one "/" character. The last segment of the URL's path must represent
-  // the fully qualified name of the type (as in
-  // `path/google.protobuf.Duration`). The name should be in a canonical form
-  // (e.g., leading "." is not accepted).
-  //
-  // In practice, teams usually precompile into the binary all types that they
-  // expect it to use in the context of Any. However, for URLs which use the
-  // scheme `http`, `https`, or no scheme, one can optionally set up a type
-  // server that maps type URLs to message definitions as follows:
-  //
-  // * If no scheme is provided, `https` is assumed.
-  // * An HTTP GET on the URL must yield a [google.protobuf.Type][]
-  //   value in binary format, or produce an error.
-  // * Applications are allowed to cache lookup results based on the
-  //   URL, or have them precompiled into a binary to avoid any
-  //   lookup. Therefore, binary compatibility needs to be preserved
-  //   on changes to types. (Use versioned type names to manage
-  //   breaking changes.)
-  //
-  // Note: this functionality is not currently available in the official
-  // protobuf release, and it is not used for type URLs beginning with
-  // type.googleapis.com.
-  //
-  // Schemes other than `http`, `https` (or the empty scheme) might be
-  // used with implementation specific semantics.
-  //
-  string type_url = 1;
-
-  // Must be a valid serialized protocol buffer of the above specified type.
-  bytes value = 2;
-}

vendor/github.com/golang/protobuf/ptypes/doc.go

@@ -1,35 +1,6 @@
-// Go support for Protocol Buffers - Google's data interchange format
+// Copyright 2016 The Go Authors. All rights reserved.
-//
+// Use of this source code is governed by a BSD-style
-// Copyright 2016 The Go Authors.  All rights reserved.
+// license that can be found in the LICENSE file.
-// https://github.com/golang/protobuf
-//
-// Redistribution and use in source and binary forms, with or without
-// modification, are permitted provided that the following conditions are
-// met:
-//
-//     * Redistributions of source code must retain the above copyright
-// notice, this list of conditions and the following disclaimer.
-//     * Redistributions in binary form must reproduce the above
-// copyright notice, this list of conditions and the following disclaimer
-// in the documentation and/or other materials provided with the
-// distribution.
-//     * Neither the name of Google Inc. nor the names of its
-// contributors may be used to endorse or promote products derived from
-// this software without specific prior written permission.
-//
-// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
-/*
+// Package ptypes provides functionality for interacting with well-known types.
-Package ptypes contains code for interacting with well-known types.
-*/
 package ptypes

vendor/github.com/golang/protobuf/ptypes/duration.go

@@ -1,102 +1,72 @@
-// Go support for Protocol Buffers - Google's data interchange format
+// Copyright 2016 The Go Authors. All rights reserved.
-//
+// Use of this source code is governed by a BSD-style
-// Copyright 2016 The Go Authors.  All rights reserved.
+// license that can be found in the LICENSE file.
-// https://github.com/golang/protobuf
-//
-// Redistribution and use in source and binary forms, with or without
-// modification, are permitted provided that the following conditions are
-// met:
-//
-//     * Redistributions of source code must retain the above copyright
-// notice, this list of conditions and the following disclaimer.
-//     * Redistributions in binary form must reproduce the above
-// copyright notice, this list of conditions and the following disclaimer
-// in the documentation and/or other materials provided with the
-// distribution.
-//     * Neither the name of Google Inc. nor the names of its
-// contributors may be used to endorse or promote products derived from
-// this software without specific prior written permission.
-//
-// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 package ptypes
 
-// This file implements conversions between google.protobuf.Duration
-// and time.Duration.
-
 import (
 	"errors"
 	"fmt"
 	"time"
 
-	durpb "github.com/golang/protobuf/ptypes/duration"
+	durationpb "github.com/golang/protobuf/ptypes/duration"
 )
 
+// Range of google.protobuf.Duration as specified in duration.proto.
+// This is about 10,000 years in seconds.
 const (
-	// Range of a durpb.Duration in seconds, as specified in
-	// google/protobuf/duration.proto. This is about 10,000 years in seconds.
 	maxSeconds = int64(10000 * 365.25 * 24 * 60 * 60)
 	minSeconds = -maxSeconds
 )
 
-// validateDuration determines whether the durpb.Duration is valid according to the
+// Duration converts a durationpb.Duration to a time.Duration.
-// definition in google/protobuf/duration.proto. A valid durpb.Duration
+// Duration returns an error if dur is invalid or overflows a time.Duration.
-// may still be too large to fit into a time.Duration (the range of durpb.Duration
+func Duration(dur *durationpb.Duration) (time.Duration, error) {
-// is about 10,000 years, and the range of time.Duration is about 290).
+	if err := validateDuration(dur); err != nil {
-func validateDuration(d *durpb.Duration) error {
-	if d == nil {
-		return errors.New("duration: nil Duration")
-	}
-	if d.Seconds < minSeconds || d.Seconds > maxSeconds {
-		return fmt.Errorf("duration: %v: seconds out of range", d)
-	}
-	if d.Nanos <= -1e9 || d.Nanos >= 1e9 {
-		return fmt.Errorf("duration: %v: nanos out of range", d)
-	}
-	// Seconds and Nanos must have the same sign, unless d.Nanos is zero.
-	if (d.Seconds < 0 && d.Nanos > 0) || (d.Seconds > 0 && d.Nanos < 0) {
-		return fmt.Errorf("duration: %v: seconds and nanos have different signs", d)
-	}
-	return nil
-}
-
-// Duration converts a durpb.Duration to a time.Duration. Duration
-// returns an error if the durpb.Duration is invalid or is too large to be
-// represented in a time.Duration.
-func Duration(p *durpb.Duration) (time.Duration, error) {
-	if err := validateDuration(p); err != nil {
 		return 0, err
 	}
-	d := time.Duration(p.Seconds) * time.Second
+	d := time.Duration(dur.Seconds) * time.Second
-	if int64(d/time.Second) != p.Seconds {
+	if int64(d/time.Second) != dur.Seconds {
-		return 0, fmt.Errorf("duration: %v is out of range for time.Duration", p)
+		return 0, fmt.Errorf("duration: %v is out of range for time.Duration", dur)
 	}
-	if p.Nanos != 0 {
+	if dur.Nanos != 0 {
-		d += time.Duration(p.Nanos) * time.Nanosecond
+		d += time.Duration(dur.Nanos) * time.Nanosecond
-		if (d < 0) != (p.Nanos < 0) {
+		if (d < 0) != (dur.Nanos < 0) {
-			return 0, fmt.Errorf("duration: %v is out of range for time.Duration", p)
+			return 0, fmt.Errorf("duration: %v is out of range for time.Duration", dur)
 		}
 	}
 	return d, nil
 }
 
-// DurationProto converts a time.Duration to a durpb.Duration.
+// DurationProto converts a time.Duration to a durationpb.Duration.
-func DurationProto(d time.Duration) *durpb.Duration {
+func DurationProto(d time.Duration) *durationpb.Duration {
 	nanos := d.Nanoseconds()
 	secs := nanos / 1e9
 	nanos -= secs * 1e9
-	return &durpb.Duration{
+	return &durationpb.Duration{
-		Seconds: secs,
+		Seconds: int64(secs),
 		Nanos:   int32(nanos),
 	}
 }
+
+// validateDuration determines whether the durationpb.Duration is valid
+// according to the definition in google/protobuf/duration.proto.
+// A valid durpb.Duration may still be too large to fit into a time.Duration
+// Note that the range of durationpb.Duration is about 10,000 years,
+// while the range of time.Duration is about 290 years.
+func validateDuration(dur *durationpb.Duration) error {
+	if dur == nil {
+		return errors.New("duration: nil Duration")
+	}
+	if dur.Seconds < minSeconds || dur.Seconds > maxSeconds {
+		return fmt.Errorf("duration: %v: seconds out of range", dur)
+	}
+	if dur.Nanos <= -1e9 || dur.Nanos >= 1e9 {
+		return fmt.Errorf("duration: %v: nanos out of range", dur)
+	}
+	// Seconds and Nanos must have the same sign, unless d.Nanos is zero.
+	if (dur.Seconds < 0 && dur.Nanos > 0) || (dur.Seconds > 0 && dur.Nanos < 0) {
+		return fmt.Errorf("duration: %v: seconds and nanos have different signs", dur)
+	}
+	return nil
+}

vendor/github.com/golang/protobuf/ptypes/duration/duration.pb.go

@@ -1,163 +1,63 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
-// source: google/protobuf/duration.proto
+// source: github.com/golang/protobuf/ptypes/duration/duration.proto
 
 package duration
 
 import (
-	fmt "fmt"
+	protoreflect "google.golang.org/protobuf/reflect/protoreflect"
-	proto "github.com/golang/protobuf/proto"
+	protoimpl "google.golang.org/protobuf/runtime/protoimpl"
-	math "math"
+	durationpb "google.golang.org/protobuf/types/known/durationpb"
+	reflect "reflect"
 )
 
-// Reference imports to suppress errors if they are not otherwise used.
+// Symbols defined in public import of google/protobuf/duration.proto.
-var _ = proto.Marshal
-var _ = fmt.Errorf
-var _ = math.Inf
 
-// This is a compile-time assertion to ensure that this generated file
+type Duration = durationpb.Duration
-// is compatible with the proto package it is being compiled against.
-// A compilation error at this line likely means your copy of the
-// proto package needs to be updated.
-const _ = proto.ProtoPackageIsVersion3 // please upgrade the proto package
 
-// A Duration represents a signed, fixed-length span of time represented
+var File_github_com_golang_protobuf_ptypes_duration_duration_proto protoreflect.FileDescriptor
-// as a count of seconds and fractions of seconds at nanosecond
+
-// resolution. It is independent of any calendar and concepts like "day"
+var file_github_com_golang_protobuf_ptypes_duration_duration_proto_rawDesc = []byte{
-// or "month". It is related to Timestamp in that the difference between
+	0x0a, 0x39, 0x67, 0x69, 0x74, 0x68, 0x75, 0x62, 0x2e, 0x63, 0x6f, 0x6d, 0x2f, 0x67, 0x6f, 0x6c,
-// two Timestamp values is a Duration and it can be added or subtracted
+	0x61, 0x6e, 0x67, 0x2f, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x62, 0x75, 0x66, 0x2f, 0x70, 0x74, 0x79,
-// from a Timestamp. Range is approximately +-10,000 years.
+	0x70, 0x65, 0x73, 0x2f, 0x64, 0x75, 0x72, 0x61, 0x74, 0x69, 0x6f, 0x6e, 0x2f, 0x64, 0x75, 0x72,
-//
+	0x61, 0x74, 0x69, 0x6f, 0x6e, 0x2e, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x1a, 0x1e, 0x67, 0x6f, 0x6f,
-// # Examples
+	0x67, 0x6c, 0x65, 0x2f, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x62, 0x75, 0x66, 0x2f, 0x64, 0x75, 0x72,
-//
+	0x61, 0x74, 0x69, 0x6f, 0x6e, 0x2e, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x42, 0x35, 0x5a, 0x33, 0x67,
-// Example 1: Compute Duration from two Timestamps in pseudo code.
+	0x69, 0x74, 0x68, 0x75, 0x62, 0x2e, 0x63, 0x6f, 0x6d, 0x2f, 0x67, 0x6f, 0x6c, 0x61, 0x6e, 0x67,
-//
+	0x2f, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x62, 0x75, 0x66, 0x2f, 0x70, 0x74, 0x79, 0x70, 0x65, 0x73,
-//     Timestamp start = ...;
+	0x2f, 0x64, 0x75, 0x72, 0x61, 0x74, 0x69, 0x6f, 0x6e, 0x3b, 0x64, 0x75, 0x72, 0x61, 0x74, 0x69,
-//     Timestamp end = ...;
+	0x6f, 0x6e, 0x50, 0x00, 0x62, 0x06, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x33,
-//     Duration duration = ...;
-//
-//     duration.seconds = end.seconds - start.seconds;
-//     duration.nanos = end.nanos - start.nanos;
-//
-//     if (duration.seconds < 0 && duration.nanos > 0) {
-//       duration.seconds += 1;
-//       duration.nanos -= 1000000000;
-//     } else if (duration.seconds > 0 && duration.nanos < 0) {
-//       duration.seconds -= 1;
-//       duration.nanos += 1000000000;
-//     }
-//
-// Example 2: Compute Timestamp from Timestamp + Duration in pseudo code.
-//
-//     Timestamp start = ...;
-//     Duration duration = ...;
-//     Timestamp end = ...;
-//
-//     end.seconds = start.seconds + duration.seconds;
-//     end.nanos = start.nanos + duration.nanos;
-//
-//     if (end.nanos < 0) {
-//       end.seconds -= 1;
-//       end.nanos += 1000000000;
-//     } else if (end.nanos >= 1000000000) {
-//       end.seconds += 1;
-//       end.nanos -= 1000000000;
-//     }
-//
-// Example 3: Compute Duration from datetime.timedelta in Python.
-//
-//     td = datetime.timedelta(days=3, minutes=10)
-//     duration = Duration()
-//     duration.FromTimedelta(td)
-//
-// # JSON Mapping
-//
-// In JSON format, the Duration type is encoded as a string rather than an
-// object, where the string ends in the suffix "s" (indicating seconds) and
-// is preceded by the number of seconds, with nanoseconds expressed as
-// fractional seconds. For example, 3 seconds with 0 nanoseconds should be
-// encoded in JSON format as "3s", while 3 seconds and 1 nanosecond should
-// be expressed in JSON format as "3.000000001s", and 3 seconds and 1
-// microsecond should be expressed in JSON format as "3.000001s".
-//
-//
-type Duration struct {
-	// Signed seconds of the span of time. Must be from -315,576,000,000
-	// to +315,576,000,000 inclusive. Note: these bounds are computed from:
-	// 60 sec/min * 60 min/hr * 24 hr/day * 365.25 days/year * 10000 years
-	Seconds int64 `protobuf:"varint,1,opt,name=seconds,proto3" json:"seconds,omitempty"`
-	// Signed fractions of a second at nanosecond resolution of the span
-	// of time. Durations less than one second are represented with a 0
-	// `seconds` field and a positive or negative `nanos` field. For durations
-	// of one second or more, a non-zero value for the `nanos` field must be
-	// of the same sign as the `seconds` field. Must be from -999,999,999
-	// to +999,999,999 inclusive.
-	Nanos                int32    `protobuf:"varint,2,opt,name=nanos,proto3" json:"nanos,omitempty"`
-	XXX_NoUnkeyedLiteral struct{} `json:"-"`
-	XXX_unrecognized     []byte   `json:"-"`
-	XXX_sizecache        int32    `json:"-"`
 }
 
-func (m *Duration) Reset()         { *m = Duration{} }
+var file_github_com_golang_protobuf_ptypes_duration_duration_proto_goTypes = []interface{}{}
-func (m *Duration) String() string { return proto.CompactTextString(m) }
+var file_github_com_golang_protobuf_ptypes_duration_duration_proto_depIdxs = []int32{
-func (*Duration) ProtoMessage()    {}
+	0, // [0:0] is the sub-list for method output_type
-func (*Duration) Descriptor() ([]byte, []int) {
+	0, // [0:0] is the sub-list for method input_type
-	return fileDescriptor_23597b2ebd7ac6c5, []int{0}
+	0, // [0:0] is the sub-list for extension type_name
+	0, // [0:0] is the sub-list for extension extendee
+	0, // [0:0] is the sub-list for field type_name
 }
 
-func (*Duration) XXX_WellKnownType() string { return "Duration" }
+func init() { file_github_com_golang_protobuf_ptypes_duration_duration_proto_init() }
-
+func file_github_com_golang_protobuf_ptypes_duration_duration_proto_init() {
-func (m *Duration) XXX_Unmarshal(b []byte) error {
+	if File_github_com_golang_protobuf_ptypes_duration_duration_proto != nil {
-	return xxx_messageInfo_Duration.Unmarshal(m, b)
+		return
-}
-func (m *Duration) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
-	return xxx_messageInfo_Duration.Marshal(b, m, deterministic)
-}
-func (m *Duration) XXX_Merge(src proto.Message) {
-	xxx_messageInfo_Duration.Merge(m, src)
-}
-func (m *Duration) XXX_Size() int {
-	return xxx_messageInfo_Duration.Size(m)
-}
-func (m *Duration) XXX_DiscardUnknown() {
-	xxx_messageInfo_Duration.DiscardUnknown(m)
-}
-
-var xxx_messageInfo_Duration proto.InternalMessageInfo
-
-func (m *Duration) GetSeconds() int64 {
-	if m != nil {
-		return m.Seconds
 	}
-	return 0
+	type x struct{}
-}
+	out := protoimpl.TypeBuilder{
-
+		File: protoimpl.DescBuilder{
-func (m *Duration) GetNanos() int32 {
+			GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
-	if m != nil {
+			RawDescriptor: file_github_com_golang_protobuf_ptypes_duration_duration_proto_rawDesc,
-		return m.Nanos
+			NumEnums:      0,
-	}
+			NumMessages:   0,
-	return 0
+			NumExtensions: 0,
-}
+			NumServices:   0,
-
+		},
-func init() {
+		GoTypes:           file_github_com_golang_protobuf_ptypes_duration_duration_proto_goTypes,
-	proto.RegisterType((*Duration)(nil), "google.protobuf.Duration")
+		DependencyIndexes: file_github_com_golang_protobuf_ptypes_duration_duration_proto_depIdxs,
-}
+	}.Build()
-
+	File_github_com_golang_protobuf_ptypes_duration_duration_proto = out.File
-func init() {
+	file_github_com_golang_protobuf_ptypes_duration_duration_proto_rawDesc = nil
-	proto.RegisterFile("google/protobuf/duration.proto", fileDescriptor_23597b2ebd7ac6c5)
+	file_github_com_golang_protobuf_ptypes_duration_duration_proto_goTypes = nil
-}
+	file_github_com_golang_protobuf_ptypes_duration_duration_proto_depIdxs = nil
-
-var fileDescriptor_23597b2ebd7ac6c5 = []byte{
-	// 190 bytes of a gzipped FileDescriptorProto
-	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xff, 0xe2, 0x92, 0x4b, 0xcf, 0xcf, 0x4f,
-	0xcf, 0x49, 0xd5, 0x2f, 0x28, 0xca, 0x2f, 0xc9, 0x4f, 0x2a, 0x4d, 0xd3, 0x4f, 0x29, 0x2d, 0x4a,
-	0x2c, 0xc9, 0xcc, 0xcf, 0xd3, 0x03, 0x8b, 0x08, 0xf1, 0x43, 0xe4, 0xf5, 0x60, 0xf2, 0x4a, 0x56,
-	0x5c, 0x1c, 0x2e, 0x50, 0x25, 0x42, 0x12, 0x5c, 0xec, 0xc5, 0xa9, 0xc9, 0xf9, 0x79, 0x29, 0xc5,
-	0x12, 0x8c, 0x0a, 0x8c, 0x1a, 0xcc, 0x41, 0x30, 0xae, 0x90, 0x08, 0x17, 0x6b, 0x5e, 0x62, 0x5e,
-	0x7e, 0xb1, 0x04, 0x93, 0x02, 0xa3, 0x06, 0x6b, 0x10, 0x84, 0xe3, 0x54, 0xc3, 0x25, 0x9c, 0x9c,
-	0x9f, 0xab, 0x87, 0x66, 0xa4, 0x13, 0x2f, 0xcc, 0xc0, 0x00, 0x90, 0x48, 0x00, 0x63, 0x94, 0x56,
-	0x7a, 0x66, 0x49, 0x46, 0x69, 0x92, 0x5e, 0x72, 0x7e, 0xae, 0x7e, 0x7a, 0x7e, 0x4e, 0x62, 0x5e,
-	0x3a, 0xc2, 0x7d, 0x05, 0x25, 0x95, 0x05, 0xa9, 0xc5, 0x70, 0x67, 0xfe, 0x60, 0x64, 0x5c, 0xc4,
-	0xc4, 0xec, 0x1e, 0xe0, 0xb4, 0x8a, 0x49, 0xce, 0x1d, 0x62, 0x6e, 0x00, 0x54, 0xa9, 0x5e, 0x78,
-	0x6a, 0x4e, 0x8e, 0x77, 0x5e, 0x7e, 0x79, 0x5e, 0x08, 0x48, 0x4b, 0x12, 0x1b, 0xd8, 0x0c, 0x63,
-	0x40, 0x00, 0x00, 0x00, 0xff, 0xff, 0xdc, 0x84, 0x30, 0xff, 0xf3, 0x00, 0x00, 0x00,
 }

vendor/github.com/golang/protobuf/ptypes/duration/duration.proto

@@ -1,116 +0,0 @@
-// Protocol Buffers - Google's data interchange format
-// Copyright 2008 Google Inc.  All rights reserved.
-// https://developers.google.com/protocol-buffers/
-//
-// Redistribution and use in source and binary forms, with or without
-// modification, are permitted provided that the following conditions are
-// met:
-//
-//     * Redistributions of source code must retain the above copyright
-// notice, this list of conditions and the following disclaimer.
-//     * Redistributions in binary form must reproduce the above
-// copyright notice, this list of conditions and the following disclaimer
-// in the documentation and/or other materials provided with the
-// distribution.
-//     * Neither the name of Google Inc. nor the names of its
-// contributors may be used to endorse or promote products derived from
-// this software without specific prior written permission.
-//
-// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-syntax = "proto3";
-
-package google.protobuf;
-
-option csharp_namespace = "Google.Protobuf.WellKnownTypes";
-option cc_enable_arenas = true;
-option go_package = "github.com/golang/protobuf/ptypes/duration";
-option java_package = "com.google.protobuf";
-option java_outer_classname = "DurationProto";
-option java_multiple_files = true;
-option objc_class_prefix = "GPB";
-
-// A Duration represents a signed, fixed-length span of time represented
-// as a count of seconds and fractions of seconds at nanosecond
-// resolution. It is independent of any calendar and concepts like "day"
-// or "month". It is related to Timestamp in that the difference between
-// two Timestamp values is a Duration and it can be added or subtracted
-// from a Timestamp. Range is approximately +-10,000 years.
-//
-// # Examples
-//
-// Example 1: Compute Duration from two Timestamps in pseudo code.
-//
-//     Timestamp start = ...;
-//     Timestamp end = ...;
-//     Duration duration = ...;
-//
-//     duration.seconds = end.seconds - start.seconds;
-//     duration.nanos = end.nanos - start.nanos;
-//
-//     if (duration.seconds < 0 && duration.nanos > 0) {
-//       duration.seconds += 1;
-//       duration.nanos -= 1000000000;
-//     } else if (duration.seconds > 0 && duration.nanos < 0) {
-//       duration.seconds -= 1;
-//       duration.nanos += 1000000000;
-//     }
-//
-// Example 2: Compute Timestamp from Timestamp + Duration in pseudo code.
-//
-//     Timestamp start = ...;
-//     Duration duration = ...;
-//     Timestamp end = ...;
-//
-//     end.seconds = start.seconds + duration.seconds;
-//     end.nanos = start.nanos + duration.nanos;
-//
-//     if (end.nanos < 0) {
-//       end.seconds -= 1;
-//       end.nanos += 1000000000;
-//     } else if (end.nanos >= 1000000000) {
-//       end.seconds += 1;
-//       end.nanos -= 1000000000;
-//     }
-//
-// Example 3: Compute Duration from datetime.timedelta in Python.
-//
-//     td = datetime.timedelta(days=3, minutes=10)
-//     duration = Duration()
-//     duration.FromTimedelta(td)
-//
-// # JSON Mapping
-//
-// In JSON format, the Duration type is encoded as a string rather than an
-// object, where the string ends in the suffix "s" (indicating seconds) and
-// is preceded by the number of seconds, with nanoseconds expressed as
-// fractional seconds. For example, 3 seconds with 0 nanoseconds should be
-// encoded in JSON format as "3s", while 3 seconds and 1 nanosecond should
-// be expressed in JSON format as "3.000000001s", and 3 seconds and 1
-// microsecond should be expressed in JSON format as "3.000001s".
-//
-//
-message Duration {
-  // Signed seconds of the span of time. Must be from -315,576,000,000
-  // to +315,576,000,000 inclusive. Note: these bounds are computed from:
-  // 60 sec/min * 60 min/hr * 24 hr/day * 365.25 days/year * 10000 years
-  int64 seconds = 1;
-
-  // Signed fractions of a second at nanosecond resolution of the span
-  // of time. Durations less than one second are represented with a 0
-  // `seconds` field and a positive or negative `nanos` field. For durations
-  // of one second or more, a non-zero value for the `nanos` field must be
-  // of the same sign as the `seconds` field. Must be from -999,999,999
-  // to +999,999,999 inclusive.
-  int32 nanos = 2;
-}

vendor/github.com/golang/protobuf/ptypes/timestamp.go

@@ -1,46 +1,18 @@
-// Go support for Protocol Buffers - Google's data interchange format
+// Copyright 2016 The Go Authors. All rights reserved.
-//
+// Use of this source code is governed by a BSD-style
-// Copyright 2016 The Go Authors.  All rights reserved.
+// license that can be found in the LICENSE file.
-// https://github.com/golang/protobuf
-//
-// Redistribution and use in source and binary forms, with or without
-// modification, are permitted provided that the following conditions are
-// met:
-//
-//     * Redistributions of source code must retain the above copyright
-// notice, this list of conditions and the following disclaimer.
-//     * Redistributions in binary form must reproduce the above
-// copyright notice, this list of conditions and the following disclaimer
-// in the documentation and/or other materials provided with the
-// distribution.
-//     * Neither the name of Google Inc. nor the names of its
-// contributors may be used to endorse or promote products derived from
-// this software without specific prior written permission.
-//
-// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 package ptypes
 
-// This file implements operations on google.protobuf.Timestamp.
-
 import (
 	"errors"
 	"fmt"
 	"time"
 
-	tspb "github.com/golang/protobuf/ptypes/timestamp"
+	timestamppb "github.com/golang/protobuf/ptypes/timestamp"
 )
 
+// Range of google.protobuf.Duration as specified in timestamp.proto.
 const (
 	// Seconds field of the earliest valid Timestamp.
 	// This is time.Date(1, 1, 1, 0, 0, 0, 0, time.UTC).Unix().
@@ -50,17 +22,71 @@ const (
 	maxValidSeconds = 253402300800
 )
 
+// Timestamp converts a timestamppb.Timestamp to a time.Time.
+// It returns an error if the argument is invalid.
+//
+// Unlike most Go functions, if Timestamp returns an error, the first return
+// value is not the zero time.Time. Instead, it is the value obtained from the
+// time.Unix function when passed the contents of the Timestamp, in the UTC
+// locale. This may or may not be a meaningful time; many invalid Timestamps
+// do map to valid time.Times.
+//
+// A nil Timestamp returns an error. The first return value in that case is
+// undefined.
+func Timestamp(ts *timestamppb.Timestamp) (time.Time, error) {
+	// Don't return the zero value on error, because corresponds to a valid
+	// timestamp. Instead return whatever time.Unix gives us.
+	var t time.Time
+	if ts == nil {
+		t = time.Unix(0, 0).UTC() // treat nil like the empty Timestamp
+	} else {
+		t = time.Unix(ts.Seconds, int64(ts.Nanos)).UTC()
+	}
+	return t, validateTimestamp(ts)
+}
+
+// TimestampNow returns a google.protobuf.Timestamp for the current time.
+func TimestampNow() *timestamppb.Timestamp {
+	ts, err := TimestampProto(time.Now())
+	if err != nil {
+		panic("ptypes: time.Now() out of Timestamp range")
+	}
+	return ts
+}
+
+// TimestampProto converts the time.Time to a google.protobuf.Timestamp proto.
+// It returns an error if the resulting Timestamp is invalid.
+func TimestampProto(t time.Time) (*timestamppb.Timestamp, error) {
+	ts := &timestamppb.Timestamp{
+		Seconds: t.Unix(),
+		Nanos:   int32(t.Nanosecond()),
+	}
+	if err := validateTimestamp(ts); err != nil {
+		return nil, err
+	}
+	return ts, nil
+}
+
+// TimestampString returns the RFC 3339 string for valid Timestamps.
+// For invalid Timestamps, it returns an error message in parentheses.
+func TimestampString(ts *timestamppb.Timestamp) string {
+	t, err := Timestamp(ts)
+	if err != nil {
+		return fmt.Sprintf("(%v)", err)
+	}
+	return t.Format(time.RFC3339Nano)
+}
+
 // validateTimestamp determines whether a Timestamp is valid.
-// A valid timestamp represents a time in the range
+// A valid timestamp represents a time in the range [0001-01-01, 10000-01-01)
-// [0001-01-01, 10000-01-01) and has a Nanos field
+// and has a Nanos field in the range [0, 1e9).
-// in the range [0, 1e9).
 //
 // If the Timestamp is valid, validateTimestamp returns nil.
-// Otherwise, it returns an error that describes
+// Otherwise, it returns an error that describes the problem.
-// the problem.
 //
-// Every valid Timestamp can be represented by a time.Time, but the converse is not true.
+// Every valid Timestamp can be represented by a time.Time,
-func validateTimestamp(ts *tspb.Timestamp) error {
+// but the converse is not true.
+func validateTimestamp(ts *timestamppb.Timestamp) error {
 	if ts == nil {
 		return errors.New("timestamp: nil Timestamp")
 	}
@@ -75,58 +101,3 @@ func validateTimestamp(ts *tspb.Timestamp) error {
 	}
 	return nil
 }
-
-// Timestamp converts a google.protobuf.Timestamp proto to a time.Time.
-// It returns an error if the argument is invalid.
-//
-// Unlike most Go functions, if Timestamp returns an error, the first return value
-// is not the zero time.Time. Instead, it is the value obtained from the
-// time.Unix function when passed the contents of the Timestamp, in the UTC
-// locale. This may or may not be a meaningful time; many invalid Timestamps
-// do map to valid time.Times.
-//
-// A nil Timestamp returns an error. The first return value in that case is
-// undefined.
-func Timestamp(ts *tspb.Timestamp) (time.Time, error) {
-	// Don't return the zero value on error, because corresponds to a valid
-	// timestamp. Instead return whatever time.Unix gives us.
-	var t time.Time
-	if ts == nil {
-		t = time.Unix(0, 0).UTC() // treat nil like the empty Timestamp
-	} else {
-		t = time.Unix(ts.Seconds, int64(ts.Nanos)).UTC()
-	}
-	return t, validateTimestamp(ts)
-}
-
-// TimestampNow returns a google.protobuf.Timestamp for the current time.
-func TimestampNow() *tspb.Timestamp {
-	ts, err := TimestampProto(time.Now())
-	if err != nil {
-		panic("ptypes: time.Now() out of Timestamp range")
-	}
-	return ts
-}
-
-// TimestampProto converts the time.Time to a google.protobuf.Timestamp proto.
-// It returns an error if the resulting Timestamp is invalid.
-func TimestampProto(t time.Time) (*tspb.Timestamp, error) {
-	ts := &tspb.Timestamp{
-		Seconds: t.Unix(),
-		Nanos:   int32(t.Nanosecond()),
-	}
-	if err := validateTimestamp(ts); err != nil {
-		return nil, err
-	}
-	return ts, nil
-}
-
-// TimestampString returns the RFC 3339 string for valid Timestamps. For invalid
-// Timestamps, it returns an error message in parentheses.
-func TimestampString(ts *tspb.Timestamp) string {
-	t, err := Timestamp(ts)
-	if err != nil {
-		return fmt.Sprintf("(%v)", err)
-	}
-	return t.Format(time.RFC3339Nano)
-}

vendor/github.com/golang/protobuf/ptypes/timestamp/timestamp.pb.go

@@ -1,185 +1,64 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
-// source: google/protobuf/timestamp.proto
+// source: github.com/golang/protobuf/ptypes/timestamp/timestamp.proto
 
 package timestamp
 
 import (
-	fmt "fmt"
+	protoreflect "google.golang.org/protobuf/reflect/protoreflect"
-	proto "github.com/golang/protobuf/proto"
+	protoimpl "google.golang.org/protobuf/runtime/protoimpl"
-	math "math"
+	timestamppb "google.golang.org/protobuf/types/known/timestamppb"
+	reflect "reflect"
 )
 
-// Reference imports to suppress errors if they are not otherwise used.
+// Symbols defined in public import of google/protobuf/timestamp.proto.
-var _ = proto.Marshal
-var _ = fmt.Errorf
-var _ = math.Inf
 
-// This is a compile-time assertion to ensure that this generated file
+type Timestamp = timestamppb.Timestamp
-// is compatible with the proto package it is being compiled against.
-// A compilation error at this line likely means your copy of the
-// proto package needs to be updated.
-const _ = proto.ProtoPackageIsVersion3 // please upgrade the proto package
 
-// A Timestamp represents a point in time independent of any time zone or local
+var File_github_com_golang_protobuf_ptypes_timestamp_timestamp_proto protoreflect.FileDescriptor
-// calendar, encoded as a count of seconds and fractions of seconds at
+
-// nanosecond resolution. The count is relative to an epoch at UTC midnight on
+var file_github_com_golang_protobuf_ptypes_timestamp_timestamp_proto_rawDesc = []byte{
-// January 1, 1970, in the proleptic Gregorian calendar which extends the
+	0x0a, 0x3b, 0x67, 0x69, 0x74, 0x68, 0x75, 0x62, 0x2e, 0x63, 0x6f, 0x6d, 0x2f, 0x67, 0x6f, 0x6c,
-// Gregorian calendar backwards to year one.
+	0x61, 0x6e, 0x67, 0x2f, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x62, 0x75, 0x66, 0x2f, 0x70, 0x74, 0x79,
-//
+	0x70, 0x65, 0x73, 0x2f, 0x74, 0x69, 0x6d, 0x65, 0x73, 0x74, 0x61, 0x6d, 0x70, 0x2f, 0x74, 0x69,
-// All minutes are 60 seconds long. Leap seconds are "smeared" so that no leap
+	0x6d, 0x65, 0x73, 0x74, 0x61, 0x6d, 0x70, 0x2e, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x1a, 0x1f, 0x67,
-// second table is needed for interpretation, using a [24-hour linear
+	0x6f, 0x6f, 0x67, 0x6c, 0x65, 0x2f, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x62, 0x75, 0x66, 0x2f, 0x74,
-// smear](https://developers.google.com/time/smear).
+	0x69, 0x6d, 0x65, 0x73, 0x74, 0x61, 0x6d, 0x70, 0x2e, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x42, 0x37,
-//
+	0x5a, 0x35, 0x67, 0x69, 0x74, 0x68, 0x75, 0x62, 0x2e, 0x63, 0x6f, 0x6d, 0x2f, 0x67, 0x6f, 0x6c,
-// The range is from 0001-01-01T00:00:00Z to 9999-12-31T23:59:59.999999999Z. By
+	0x61, 0x6e, 0x67, 0x2f, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x62, 0x75, 0x66, 0x2f, 0x70, 0x74, 0x79,
-// restricting to that range, we ensure that we can convert to and from [RFC
+	0x70, 0x65, 0x73, 0x2f, 0x74, 0x69, 0x6d, 0x65, 0x73, 0x74, 0x61, 0x6d, 0x70, 0x3b, 0x74, 0x69,
-// 3339](https://www.ietf.org/rfc/rfc3339.txt) date strings.
+	0x6d, 0x65, 0x73, 0x74, 0x61, 0x6d, 0x70, 0x50, 0x00, 0x62, 0x06, 0x70, 0x72, 0x6f, 0x74, 0x6f,
-//
+	0x33,
-// # Examples
-//
-// Example 1: Compute Timestamp from POSIX `time()`.
-//
-//     Timestamp timestamp;
-//     timestamp.set_seconds(time(NULL));
-//     timestamp.set_nanos(0);
-//
-// Example 2: Compute Timestamp from POSIX `gettimeofday()`.
-//
-//     struct timeval tv;
-//     gettimeofday(&tv, NULL);
-//
-//     Timestamp timestamp;
-//     timestamp.set_seconds(tv.tv_sec);
-//     timestamp.set_nanos(tv.tv_usec * 1000);
-//
-// Example 3: Compute Timestamp from Win32 `GetSystemTimeAsFileTime()`.
-//
-//     FILETIME ft;
-//     GetSystemTimeAsFileTime(&ft);
-//     UINT64 ticks = (((UINT64)ft.dwHighDateTime) << 32) | ft.dwLowDateTime;
-//
-//     // A Windows tick is 100 nanoseconds. Windows epoch 1601-01-01T00:00:00Z
-//     // is 11644473600 seconds before Unix epoch 1970-01-01T00:00:00Z.
-//     Timestamp timestamp;
-//     timestamp.set_seconds((INT64) ((ticks / 10000000) - 11644473600LL));
-//     timestamp.set_nanos((INT32) ((ticks % 10000000) * 100));
-//
-// Example 4: Compute Timestamp from Java `System.currentTimeMillis()`.
-//
-//     long millis = System.currentTimeMillis();
-//
-//     Timestamp timestamp = Timestamp.newBuilder().setSeconds(millis / 1000)
-//         .setNanos((int) ((millis % 1000) * 1000000)).build();
-//
-//
-// Example 5: Compute Timestamp from current time in Python.
-//
-//     timestamp = Timestamp()
-//     timestamp.GetCurrentTime()
-//
-// # JSON Mapping
-//
-// In JSON format, the Timestamp type is encoded as a string in the
-// [RFC 3339](https://www.ietf.org/rfc/rfc3339.txt) format. That is, the
-// format is "{year}-{month}-{day}T{hour}:{min}:{sec}[.{frac_sec}]Z"
-// where {year} is always expressed using four digits while {month}, {day},
-// {hour}, {min}, and {sec} are zero-padded to two digits each. The fractional
-// seconds, which can go up to 9 digits (i.e. up to 1 nanosecond resolution),
-// are optional. The "Z" suffix indicates the timezone ("UTC"); the timezone
-// is required. A proto3 JSON serializer should always use UTC (as indicated by
-// "Z") when printing the Timestamp type and a proto3 JSON parser should be
-// able to accept both UTC and other timezones (as indicated by an offset).
-//
-// For example, "2017-01-15T01:30:15.01Z" encodes 15.01 seconds past
-// 01:30 UTC on January 15, 2017.
-//
-// In JavaScript, one can convert a Date object to this format using the
-// standard
-// [toISOString()](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Date/toISOString)
-// method. In Python, a standard `datetime.datetime` object can be converted
-// to this format using
-// [`strftime`](https://docs.python.org/2/library/time.html#time.strftime) with
-// the time format spec '%Y-%m-%dT%H:%M:%S.%fZ'. Likewise, in Java, one can use
-// the Joda Time's [`ISODateTimeFormat.dateTime()`](
-// http://www.joda.org/joda-time/apidocs/org/joda/time/format/ISODateTimeFormat.html#dateTime%2D%2D
-// ) to obtain a formatter capable of generating timestamps in this format.
-//
-//
-type Timestamp struct {
-	// Represents seconds of UTC time since Unix epoch
-	// 1970-01-01T00:00:00Z. Must be from 0001-01-01T00:00:00Z to
-	// 9999-12-31T23:59:59Z inclusive.
-	Seconds int64 `protobuf:"varint,1,opt,name=seconds,proto3" json:"seconds,omitempty"`
-	// Non-negative fractions of a second at nanosecond resolution. Negative
-	// second values with fractions must still have non-negative nanos values
-	// that count forward in time. Must be from 0 to 999,999,999
-	// inclusive.
-	Nanos                int32    `protobuf:"varint,2,opt,name=nanos,proto3" json:"nanos,omitempty"`
-	XXX_NoUnkeyedLiteral struct{} `json:"-"`
-	XXX_unrecognized     []byte   `json:"-"`
-	XXX_sizecache        int32    `json:"-"`
 }
 
-func (m *Timestamp) Reset()         { *m = Timestamp{} }
+var file_github_com_golang_protobuf_ptypes_timestamp_timestamp_proto_goTypes = []interface{}{}
-func (m *Timestamp) String() string { return proto.CompactTextString(m) }
+var file_github_com_golang_protobuf_ptypes_timestamp_timestamp_proto_depIdxs = []int32{
-func (*Timestamp) ProtoMessage()    {}
+	0, // [0:0] is the sub-list for method output_type
-func (*Timestamp) Descriptor() ([]byte, []int) {
+	0, // [0:0] is the sub-list for method input_type
-	return fileDescriptor_292007bbfe81227e, []int{0}
+	0, // [0:0] is the sub-list for extension type_name
+	0, // [0:0] is the sub-list for extension extendee
+	0, // [0:0] is the sub-list for field type_name
 }
 
-func (*Timestamp) XXX_WellKnownType() string { return "Timestamp" }
+func init() { file_github_com_golang_protobuf_ptypes_timestamp_timestamp_proto_init() }
-
+func file_github_com_golang_protobuf_ptypes_timestamp_timestamp_proto_init() {
-func (m *Timestamp) XXX_Unmarshal(b []byte) error {
+	if File_github_com_golang_protobuf_ptypes_timestamp_timestamp_proto != nil {
-	return xxx_messageInfo_Timestamp.Unmarshal(m, b)
+		return
-}
-func (m *Timestamp) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
-	return xxx_messageInfo_Timestamp.Marshal(b, m, deterministic)
-}
-func (m *Timestamp) XXX_Merge(src proto.Message) {
-	xxx_messageInfo_Timestamp.Merge(m, src)
-}
-func (m *Timestamp) XXX_Size() int {
-	return xxx_messageInfo_Timestamp.Size(m)
-}
-func (m *Timestamp) XXX_DiscardUnknown() {
-	xxx_messageInfo_Timestamp.DiscardUnknown(m)
-}
-
-var xxx_messageInfo_Timestamp proto.InternalMessageInfo
-
-func (m *Timestamp) GetSeconds() int64 {
-	if m != nil {
-		return m.Seconds
 	}
-	return 0
+	type x struct{}
-}
+	out := protoimpl.TypeBuilder{
-
+		File: protoimpl.DescBuilder{
-func (m *Timestamp) GetNanos() int32 {
+			GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
-	if m != nil {
+			RawDescriptor: file_github_com_golang_protobuf_ptypes_timestamp_timestamp_proto_rawDesc,
-		return m.Nanos
+			NumEnums:      0,
-	}
+			NumMessages:   0,
-	return 0
+			NumExtensions: 0,
-}
+			NumServices:   0,
-
+		},
-func init() {
+		GoTypes:           file_github_com_golang_protobuf_ptypes_timestamp_timestamp_proto_goTypes,
-	proto.RegisterType((*Timestamp)(nil), "google.protobuf.Timestamp")
+		DependencyIndexes: file_github_com_golang_protobuf_ptypes_timestamp_timestamp_proto_depIdxs,
-}
+	}.Build()
-
+	File_github_com_golang_protobuf_ptypes_timestamp_timestamp_proto = out.File
-func init() {
+	file_github_com_golang_protobuf_ptypes_timestamp_timestamp_proto_rawDesc = nil
-	proto.RegisterFile("google/protobuf/timestamp.proto", fileDescriptor_292007bbfe81227e)
+	file_github_com_golang_protobuf_ptypes_timestamp_timestamp_proto_goTypes = nil
-}
+	file_github_com_golang_protobuf_ptypes_timestamp_timestamp_proto_depIdxs = nil
-
-var fileDescriptor_292007bbfe81227e = []byte{
-	// 191 bytes of a gzipped FileDescriptorProto
-	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xff, 0xe2, 0x92, 0x4f, 0xcf, 0xcf, 0x4f,
-	0xcf, 0x49, 0xd5, 0x2f, 0x28, 0xca, 0x2f, 0xc9, 0x4f, 0x2a, 0x4d, 0xd3, 0x2f, 0xc9, 0xcc, 0x4d,
-	0x2d, 0x2e, 0x49, 0xcc, 0x2d, 0xd0, 0x03, 0x0b, 0x09, 0xf1, 0x43, 0x14, 0xe8, 0xc1, 0x14, 0x28,
-	0x59, 0x73, 0x71, 0x86, 0xc0, 0xd4, 0x08, 0x49, 0x70, 0xb1, 0x17, 0xa7, 0x26, 0xe7, 0xe7, 0xa5,
-	0x14, 0x4b, 0x30, 0x2a, 0x30, 0x6a, 0x30, 0x07, 0xc1, 0xb8, 0x42, 0x22, 0x5c, 0xac, 0x79, 0x89,
-	0x79, 0xf9, 0xc5, 0x12, 0x4c, 0x0a, 0x8c, 0x1a, 0xac, 0x41, 0x10, 0x8e, 0x53, 0x1d, 0x97, 0x70,
-	0x72, 0x7e, 0xae, 0x1e, 0x9a, 0x99, 0x4e, 0x7c, 0x70, 0x13, 0x03, 0x40, 0x42, 0x01, 0x8c, 0x51,
-	0xda, 0xe9, 0x99, 0x25, 0x19, 0xa5, 0x49, 0x7a, 0xc9, 0xf9, 0xb9, 0xfa, 0xe9, 0xf9, 0x39, 0x89,
-	0x79, 0xe9, 0x08, 0x27, 0x16, 0x94, 0x54, 0x16, 0xa4, 0x16, 0x23, 0x5c, 0xfa, 0x83, 0x91, 0x71,
-	0x11, 0x13, 0xb3, 0x7b, 0x80, 0xd3, 0x2a, 0x26, 0x39, 0x77, 0x88, 0xc9, 0x01, 0x50, 0xb5, 0x7a,
-	0xe1, 0xa9, 0x39, 0x39, 0xde, 0x79, 0xf9, 0xe5, 0x79, 0x21, 0x20, 0x3d, 0x49, 0x6c, 0x60, 0x43,
-	0x8c, 0x01, 0x01, 0x00, 0x00, 0xff, 0xff, 0xbc, 0x77, 0x4a, 0x07, 0xf7, 0x00, 0x00, 0x00,
 }

vendor/github.com/golang/protobuf/ptypes/timestamp/timestamp.proto

@@ -1,138 +0,0 @@
-// Protocol Buffers - Google's data interchange format
-// Copyright 2008 Google Inc.  All rights reserved.
-// https://developers.google.com/protocol-buffers/
-//
-// Redistribution and use in source and binary forms, with or without
-// modification, are permitted provided that the following conditions are
-// met:
-//
-//     * Redistributions of source code must retain the above copyright
-// notice, this list of conditions and the following disclaimer.
-//     * Redistributions in binary form must reproduce the above
-// copyright notice, this list of conditions and the following disclaimer
-// in the documentation and/or other materials provided with the
-// distribution.
-//     * Neither the name of Google Inc. nor the names of its
-// contributors may be used to endorse or promote products derived from
-// this software without specific prior written permission.
-//
-// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-syntax = "proto3";
-
-package google.protobuf;
-
-option csharp_namespace = "Google.Protobuf.WellKnownTypes";
-option cc_enable_arenas = true;
-option go_package = "github.com/golang/protobuf/ptypes/timestamp";
-option java_package = "com.google.protobuf";
-option java_outer_classname = "TimestampProto";
-option java_multiple_files = true;
-option objc_class_prefix = "GPB";
-
-// A Timestamp represents a point in time independent of any time zone or local
-// calendar, encoded as a count of seconds and fractions of seconds at
-// nanosecond resolution. The count is relative to an epoch at UTC midnight on
-// January 1, 1970, in the proleptic Gregorian calendar which extends the
-// Gregorian calendar backwards to year one.
-//
-// All minutes are 60 seconds long. Leap seconds are "smeared" so that no leap
-// second table is needed for interpretation, using a [24-hour linear
-// smear](https://developers.google.com/time/smear).
-//
-// The range is from 0001-01-01T00:00:00Z to 9999-12-31T23:59:59.999999999Z. By
-// restricting to that range, we ensure that we can convert to and from [RFC
-// 3339](https://www.ietf.org/rfc/rfc3339.txt) date strings.
-//
-// # Examples
-//
-// Example 1: Compute Timestamp from POSIX `time()`.
-//
-//     Timestamp timestamp;
-//     timestamp.set_seconds(time(NULL));
-//     timestamp.set_nanos(0);
-//
-// Example 2: Compute Timestamp from POSIX `gettimeofday()`.
-//
-//     struct timeval tv;
-//     gettimeofday(&tv, NULL);
-//
-//     Timestamp timestamp;
-//     timestamp.set_seconds(tv.tv_sec);
-//     timestamp.set_nanos(tv.tv_usec * 1000);
-//
-// Example 3: Compute Timestamp from Win32 `GetSystemTimeAsFileTime()`.
-//
-//     FILETIME ft;
-//     GetSystemTimeAsFileTime(&ft);
-//     UINT64 ticks = (((UINT64)ft.dwHighDateTime) << 32) | ft.dwLowDateTime;
-//
-//     // A Windows tick is 100 nanoseconds. Windows epoch 1601-01-01T00:00:00Z
-//     // is 11644473600 seconds before Unix epoch 1970-01-01T00:00:00Z.
-//     Timestamp timestamp;
-//     timestamp.set_seconds((INT64) ((ticks / 10000000) - 11644473600LL));
-//     timestamp.set_nanos((INT32) ((ticks % 10000000) * 100));
-//
-// Example 4: Compute Timestamp from Java `System.currentTimeMillis()`.
-//
-//     long millis = System.currentTimeMillis();
-//
-//     Timestamp timestamp = Timestamp.newBuilder().setSeconds(millis / 1000)
-//         .setNanos((int) ((millis % 1000) * 1000000)).build();
-//
-//
-// Example 5: Compute Timestamp from current time in Python.
-//
-//     timestamp = Timestamp()
-//     timestamp.GetCurrentTime()
-//
-// # JSON Mapping
-//
-// In JSON format, the Timestamp type is encoded as a string in the
-// [RFC 3339](https://www.ietf.org/rfc/rfc3339.txt) format. That is, the
-// format is "{year}-{month}-{day}T{hour}:{min}:{sec}[.{frac_sec}]Z"
-// where {year} is always expressed using four digits while {month}, {day},
-// {hour}, {min}, and {sec} are zero-padded to two digits each. The fractional
-// seconds, which can go up to 9 digits (i.e. up to 1 nanosecond resolution),
-// are optional. The "Z" suffix indicates the timezone ("UTC"); the timezone
-// is required. A proto3 JSON serializer should always use UTC (as indicated by
-// "Z") when printing the Timestamp type and a proto3 JSON parser should be
-// able to accept both UTC and other timezones (as indicated by an offset).
-//
-// For example, "2017-01-15T01:30:15.01Z" encodes 15.01 seconds past
-// 01:30 UTC on January 15, 2017.
-//
-// In JavaScript, one can convert a Date object to this format using the
-// standard
-// [toISOString()](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Date/toISOString)
-// method. In Python, a standard `datetime.datetime` object can be converted
-// to this format using
-// [`strftime`](https://docs.python.org/2/library/time.html#time.strftime) with
-// the time format spec '%Y-%m-%dT%H:%M:%S.%fZ'. Likewise, in Java, one can use
-// the Joda Time's [`ISODateTimeFormat.dateTime()`](
-// http://www.joda.org/joda-time/apidocs/org/joda/time/format/ISODateTimeFormat.html#dateTime%2D%2D
-// ) to obtain a formatter capable of generating timestamps in this format.
-//
-//
-message Timestamp {
-  // Represents seconds of UTC time since Unix epoch
-  // 1970-01-01T00:00:00Z. Must be from 0001-01-01T00:00:00Z to
-  // 9999-12-31T23:59:59Z inclusive.
-  int64 seconds = 1;
-
-  // Non-negative fractions of a second at nanosecond resolution. Negative
-  // second values with fractions must still have non-negative nanos values
-  // that count forward in time. Must be from 0 to 999,999,999
-  // inclusive.
-  int32 nanos = 2;
-}

vendor/google.golang.org/protobuf/AUTHORS

@@ -0,0 +1,3 @@
+# This source code refers to The Go Authors for copyright purposes.
+# The master list of authors is in the main Go distribution,
+# visible at https://tip.golang.org/AUTHORS.

vendor/google.golang.org/protobuf/CONTRIBUTORS

@@ -0,0 +1,3 @@
+# This source code was written by the Go contributors.
+# The master list of contributors is in the main Go distribution,
+# visible at https://tip.golang.org/CONTRIBUTORS.

vendor/google.golang.org/protobuf/LICENSE

@@ -0,0 +1,27 @@
+Copyright (c) 2018 The Go Authors. All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are
+met:
+
+   * Redistributions of source code must retain the above copyright
+notice, this list of conditions and the following disclaimer.
+   * Redistributions in binary form must reproduce the above
+copyright notice, this list of conditions and the following disclaimer
+in the documentation and/or other materials provided with the
+distribution.
+   * Neither the name of Google Inc. nor the names of its
+contributors may be used to endorse or promote products derived from
+this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

vendor/google.golang.org/protobuf/PATENTS

@@ -0,0 +1,22 @@
+Additional IP Rights Grant (Patents)
+
+"This implementation" means the copyrightable works distributed by
+Google as part of the Go project.
+
+Google hereby grants to You a perpetual, worldwide, non-exclusive,
+no-charge, royalty-free, irrevocable (except as stated in this section)
+patent license to make, have made, use, offer to sell, sell, import,
+transfer and otherwise run, modify and propagate the contents of this
+implementation of Go, where such license applies only to those patent
+claims, both currently owned or controlled by Google and acquired in
+the future, licensable by Google that are necessarily infringed by this
+implementation of Go.  This grant does not include claims that would be
+infringed only as a consequence of further modification of this
+implementation.  If you or your agent or exclusive licensee institute or
+order or agree to the institution of patent litigation against any
+entity (including a cross-claim or counterclaim in a lawsuit) alleging
+that this implementation of Go or any code incorporated within this
+implementation of Go constitutes direct or contributory patent
+infringement, or inducement of patent infringement, then any patent
+rights granted to you under this License for this implementation of Go
+shall terminate as of the date such litigation is filed.

vendor/google.golang.org/protobuf/encoding/prototext/decode.go

@@ -0,0 +1,789 @@
+// Copyright 2018 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package prototext
+
+import (
+	"fmt"
+	"strings"
+	"unicode/utf8"
+
+	"google.golang.org/protobuf/internal/encoding/messageset"
+	"google.golang.org/protobuf/internal/encoding/text"
+	"google.golang.org/protobuf/internal/errors"
+	"google.golang.org/protobuf/internal/fieldnum"
+	"google.golang.org/protobuf/internal/flags"
+	"google.golang.org/protobuf/internal/pragma"
+	"google.golang.org/protobuf/internal/set"
+	"google.golang.org/protobuf/internal/strs"
+	"google.golang.org/protobuf/proto"
+	pref "google.golang.org/protobuf/reflect/protoreflect"
+	"google.golang.org/protobuf/reflect/protoregistry"
+)
+
+// Unmarshal reads the given []byte into the given proto.Message.
+func Unmarshal(b []byte, m proto.Message) error {
+	return UnmarshalOptions{}.Unmarshal(b, m)
+}
+
+// UnmarshalOptions is a configurable textproto format unmarshaler.
+type UnmarshalOptions struct {
+	pragma.NoUnkeyedLiterals
+
+	// AllowPartial accepts input for messages that will result in missing
+	// required fields. If AllowPartial is false (the default), Unmarshal will
+	// return error if there are any missing required fields.
+	AllowPartial bool
+
+	// DiscardUnknown specifies whether to ignore unknown fields when parsing.
+	// An unknown field is any field whose field name or field number does not
+	// resolve to any known or extension field in the message.
+	// By default, unmarshal rejects unknown fields as an error.
+	DiscardUnknown bool
+
+	// Resolver is used for looking up types when unmarshaling
+	// google.protobuf.Any messages or extension fields.
+	// If nil, this defaults to using protoregistry.GlobalTypes.
+	Resolver interface {
+		protoregistry.MessageTypeResolver
+		protoregistry.ExtensionTypeResolver
+	}
+}
+
+// Unmarshal reads the given []byte and populates the given proto.Message using options in
+// UnmarshalOptions object.
+func (o UnmarshalOptions) Unmarshal(b []byte, m proto.Message) error {
+	proto.Reset(m)
+
+	if o.Resolver == nil {
+		o.Resolver = protoregistry.GlobalTypes
+	}
+
+	dec := decoder{text.NewDecoder(b), o}
+	if err := dec.unmarshalMessage(m.ProtoReflect(), false); err != nil {
+		return err
+	}
+	if o.AllowPartial {
+		return nil
+	}
+	return proto.CheckInitialized(m)
+}
+
+type decoder struct {
+	*text.Decoder
+	opts UnmarshalOptions
+}
+
+// newError returns an error object with position info.
+func (d decoder) newError(pos int, f string, x ...interface{}) error {
+	line, column := d.Position(pos)
+	head := fmt.Sprintf("(line %d:%d): ", line, column)
+	return errors.New(head+f, x...)
+}
+
+// unexpectedTokenError returns a syntax error for the given unexpected token.
+func (d decoder) unexpectedTokenError(tok text.Token) error {
+	return d.syntaxError(tok.Pos(), "unexpected token: %s", tok.RawString())
+}
+
+// syntaxError returns a syntax error for given position.
+func (d decoder) syntaxError(pos int, f string, x ...interface{}) error {
+	line, column := d.Position(pos)
+	head := fmt.Sprintf("syntax error (line %d:%d): ", line, column)
+	return errors.New(head+f, x...)
+}
+
+// unmarshalMessage unmarshals into the given protoreflect.Message.
+func (d decoder) unmarshalMessage(m pref.Message, checkDelims bool) error {
+	messageDesc := m.Descriptor()
+	if !flags.ProtoLegacy && messageset.IsMessageSet(messageDesc) {
+		return errors.New("no support for proto1 MessageSets")
+	}
+
+	if messageDesc.FullName() == "google.protobuf.Any" {
+		return d.unmarshalAny(m, checkDelims)
+	}
+
+	if checkDelims {
+		tok, err := d.Read()
+		if err != nil {
+			return err
+		}
+
+		if tok.Kind() != text.MessageOpen {
+			return d.unexpectedTokenError(tok)
+		}
+	}
+
+	var seenNums set.Ints
+	var seenOneofs set.Ints
+	fieldDescs := messageDesc.Fields()
+
+	for {
+		// Read field name.
+		tok, err := d.Read()
+		if err != nil {
+			return err
+		}
+		switch typ := tok.Kind(); typ {
+		case text.Name:
+			// Continue below.
+		case text.EOF:
+			if checkDelims {
+				return text.ErrUnexpectedEOF
+			}
+			return nil
+		default:
+			if checkDelims && typ == text.MessageClose {
+				return nil
+			}
+			return d.unexpectedTokenError(tok)
+		}
+
+		// Resolve the field descriptor.
+		var name pref.Name
+		var fd pref.FieldDescriptor
+		var xt pref.ExtensionType
+		var xtErr error
+		var isFieldNumberName bool
+
+		switch tok.NameKind() {
+		case text.IdentName:
+			name = pref.Name(tok.IdentName())
+			fd = fieldDescs.ByName(name)
+			if fd == nil {
+				// The proto name of a group field is in all lowercase,
+				// while the textproto field name is the group message name.
+				gd := fieldDescs.ByName(pref.Name(strings.ToLower(string(name))))
+				if gd != nil && gd.Kind() == pref.GroupKind && gd.Message().Name() == name {
+					fd = gd
+				}
+			} else if fd.Kind() == pref.GroupKind && fd.Message().Name() != name {
+				fd = nil // reset since field name is actually the message name
+			}
+
+		case text.TypeName:
+			// Handle extensions only. This code path is not for Any.
+			xt, xtErr = d.findExtension(pref.FullName(tok.TypeName()))
+
+		case text.FieldNumber:
+			isFieldNumberName = true
+			num := pref.FieldNumber(tok.FieldNumber())
+			if !num.IsValid() {
+				return d.newError(tok.Pos(), "invalid field number: %d", num)
+			}
+			fd = fieldDescs.ByNumber(num)
+			if fd == nil {
+				xt, xtErr = d.opts.Resolver.FindExtensionByNumber(messageDesc.FullName(), num)
+			}
+		}
+
+		if xt != nil {
+			fd = xt.TypeDescriptor()
+			if !messageDesc.ExtensionRanges().Has(fd.Number()) || fd.ContainingMessage().FullName() != messageDesc.FullName() {
+				return d.newError(tok.Pos(), "message %v cannot be extended by %v", messageDesc.FullName(), fd.FullName())
+			}
+		} else if xtErr != nil && xtErr != protoregistry.NotFound {
+			return d.newError(tok.Pos(), "unable to resolve [%s]: %v", tok.RawString(), xtErr)
+		}
+		if flags.ProtoLegacy {
+			if fd != nil && fd.IsWeak() && fd.Message().IsPlaceholder() {
+				fd = nil // reset since the weak reference is not linked in
+			}
+		}
+
+		// Handle unknown fields.
+		if fd == nil {
+			if d.opts.DiscardUnknown || messageDesc.ReservedNames().Has(name) {
+				d.skipValue()
+				continue
+			}
+			return d.newError(tok.Pos(), "unknown field: %v", tok.RawString())
+		}
+
+		// Handle fields identified by field number.
+		if isFieldNumberName {
+			// TODO: Add an option to permit parsing field numbers.
+			//
+			// This requires careful thought as the MarshalOptions.EmitUnknown
+			// option allows formatting unknown fields as the field number and the
+			// best-effort textual representation of the field value.  In that case,
+			// it may not be possible to unmarshal the value from a parser that does
+			// have information about the unknown field.
+			return d.newError(tok.Pos(), "cannot specify field by number: %v", tok.RawString())
+		}
+
+		switch {
+		case fd.IsList():
+			kind := fd.Kind()
+			if kind != pref.MessageKind && kind != pref.GroupKind && !tok.HasSeparator() {
+				return d.syntaxError(tok.Pos(), "missing field separator :")
+			}
+
+			list := m.Mutable(fd).List()
+			if err := d.unmarshalList(fd, list); err != nil {
+				return err
+			}
+
+		case fd.IsMap():
+			mmap := m.Mutable(fd).Map()
+			if err := d.unmarshalMap(fd, mmap); err != nil {
+				return err
+			}
+
+		default:
+			kind := fd.Kind()
+			if kind != pref.MessageKind && kind != pref.GroupKind && !tok.HasSeparator() {
+				return d.syntaxError(tok.Pos(), "missing field separator :")
+			}
+
+			// If field is a oneof, check if it has already been set.
+			if od := fd.ContainingOneof(); od != nil {
+				idx := uint64(od.Index())
+				if seenOneofs.Has(idx) {
+					return d.newError(tok.Pos(), "error parsing %q, oneof %v is already set", tok.RawString(), od.FullName())
+				}
+				seenOneofs.Set(idx)
+			}
+
+			num := uint64(fd.Number())
+			if seenNums.Has(num) {
+				return d.newError(tok.Pos(), "non-repeated field %q is repeated", tok.RawString())
+			}
+
+			if err := d.unmarshalSingular(fd, m); err != nil {
+				return err
+			}
+			seenNums.Set(num)
+		}
+	}
+
+	return nil
+}
+
+// findExtension returns protoreflect.ExtensionType from the Resolver if found.
+func (d decoder) findExtension(xtName pref.FullName) (pref.ExtensionType, error) {
+	xt, err := d.opts.Resolver.FindExtensionByName(xtName)
+	if err == nil {
+		return xt, nil
+	}
+	return messageset.FindMessageSetExtension(d.opts.Resolver, xtName)
+}
+
+// unmarshalSingular unmarshals a non-repeated field value specified by the
+// given FieldDescriptor.
+func (d decoder) unmarshalSingular(fd pref.FieldDescriptor, m pref.Message) error {
+	var val pref.Value
+	var err error
+	switch fd.Kind() {
+	case pref.MessageKind, pref.GroupKind:
+		val = m.NewField(fd)
+		err = d.unmarshalMessage(val.Message(), true)
+	default:
+		val, err = d.unmarshalScalar(fd)
+	}
+	if err == nil {
+		m.Set(fd, val)
+	}
+	return err
+}
+
+// unmarshalScalar unmarshals a scalar/enum protoreflect.Value specified by the
+// given FieldDescriptor.
+func (d decoder) unmarshalScalar(fd pref.FieldDescriptor) (pref.Value, error) {
+	tok, err := d.Read()
+	if err != nil {
+		return pref.Value{}, err
+	}
+
+	if tok.Kind() != text.Scalar {
+		return pref.Value{}, d.unexpectedTokenError(tok)
+	}
+
+	kind := fd.Kind()
+	switch kind {
+	case pref.BoolKind:
+		if b, ok := tok.Bool(); ok {
+			return pref.ValueOfBool(b), nil
+		}
+
+	case pref.Int32Kind, pref.Sint32Kind, pref.Sfixed32Kind:
+		if n, ok := tok.Int32(); ok {
+			return pref.ValueOfInt32(n), nil
+		}
+
+	case pref.Int64Kind, pref.Sint64Kind, pref.Sfixed64Kind:
+		if n, ok := tok.Int64(); ok {
+			return pref.ValueOfInt64(n), nil
+		}
+
+	case pref.Uint32Kind, pref.Fixed32Kind:
+		if n, ok := tok.Uint32(); ok {
+			return pref.ValueOfUint32(n), nil
+		}
+
+	case pref.Uint64Kind, pref.Fixed64Kind:
+		if n, ok := tok.Uint64(); ok {
+			return pref.ValueOfUint64(n), nil
+		}
+
+	case pref.FloatKind:
+		if n, ok := tok.Float32(); ok {
+			return pref.ValueOfFloat32(n), nil
+		}
+
+	case pref.DoubleKind:
+		if n, ok := tok.Float64(); ok {
+			return pref.ValueOfFloat64(n), nil
+		}
+
+	case pref.StringKind:
+		if s, ok := tok.String(); ok {
+			if strs.EnforceUTF8(fd) && !utf8.ValidString(s) {
+				return pref.Value{}, d.newError(tok.Pos(), "contains invalid UTF-8")
+			}
+			return pref.ValueOfString(s), nil
+		}
+
+	case pref.BytesKind:
+		if b, ok := tok.String(); ok {
+			return pref.ValueOfBytes([]byte(b)), nil
+		}
+
+	case pref.EnumKind:
+		if lit, ok := tok.Enum(); ok {
+			// Lookup EnumNumber based on name.
+			if enumVal := fd.Enum().Values().ByName(pref.Name(lit)); enumVal != nil {
+				return pref.ValueOfEnum(enumVal.Number()), nil
+			}
+		}
+		if num, ok := tok.Int32(); ok {
+			return pref.ValueOfEnum(pref.EnumNumber(num)), nil
+		}
+
+	default:
+		panic(fmt.Sprintf("invalid scalar kind %v", kind))
+	}
+
+	return pref.Value{}, d.newError(tok.Pos(), "invalid value for %v type: %v", kind, tok.RawString())
+}
+
+// unmarshalList unmarshals into given protoreflect.List. A list value can
+// either be in [] syntax or simply just a single scalar/message value.
+func (d decoder) unmarshalList(fd pref.FieldDescriptor, list pref.List) error {
+	tok, err := d.Peek()
+	if err != nil {
+		return err
+	}
+
+	switch fd.Kind() {
+	case pref.MessageKind, pref.GroupKind:
+		switch tok.Kind() {
+		case text.ListOpen:
+			d.Read()
+			for {
+				tok, err := d.Peek()
+				if err != nil {
+					return err
+				}
+
+				switch tok.Kind() {
+				case text.ListClose:
+					d.Read()
+					return nil
+				case text.MessageOpen:
+					pval := list.NewElement()
+					if err := d.unmarshalMessage(pval.Message(), true); err != nil {
+						return err
+					}
+					list.Append(pval)
+				default:
+					return d.unexpectedTokenError(tok)
+				}
+			}
+
+		case text.MessageOpen:
+			pval := list.NewElement()
+			if err := d.unmarshalMessage(pval.Message(), true); err != nil {
+				return err
+			}
+			list.Append(pval)
+			return nil
+		}
+
+	default:
+		switch tok.Kind() {
+		case text.ListOpen:
+			d.Read()
+			for {
+				tok, err := d.Peek()
+				if err != nil {
+					return err
+				}
+
+				switch tok.Kind() {
+				case text.ListClose:
+					d.Read()
+					return nil
+				case text.Scalar:
+					pval, err := d.unmarshalScalar(fd)
+					if err != nil {
+						return err
+					}
+					list.Append(pval)
+				default:
+					return d.unexpectedTokenError(tok)
+				}
+			}
+
+		case text.Scalar:
+			pval, err := d.unmarshalScalar(fd)
+			if err != nil {
+				return err
+			}
+			list.Append(pval)
+			return nil
+		}
+	}
+
+	return d.unexpectedTokenError(tok)
+}
+
+// unmarshalMap unmarshals into given protoreflect.Map. A map value is a
+// textproto message containing {key: <kvalue>, value: <mvalue>}.
+func (d decoder) unmarshalMap(fd pref.FieldDescriptor, mmap pref.Map) error {
+	// Determine ahead whether map entry is a scalar type or a message type in
+	// order to call the appropriate unmarshalMapValue func inside
+	// unmarshalMapEntry.
+	var unmarshalMapValue func() (pref.Value, error)
+	switch fd.MapValue().Kind() {
+	case pref.MessageKind, pref.GroupKind:
+		unmarshalMapValue = func() (pref.Value, error) {
+			pval := mmap.NewValue()
+			if err := d.unmarshalMessage(pval.Message(), true); err != nil {
+				return pref.Value{}, err
+			}
+			return pval, nil
+		}
+	default:
+		unmarshalMapValue = func() (pref.Value, error) {
+			return d.unmarshalScalar(fd.MapValue())
+		}
+	}
+
+	tok, err := d.Read()
+	if err != nil {
+		return err
+	}
+	switch tok.Kind() {
+	case text.MessageOpen:
+		return d.unmarshalMapEntry(fd, mmap, unmarshalMapValue)
+
+	case text.ListOpen:
+		for {
+			tok, err := d.Read()
+			if err != nil {
+				return err
+			}
+			switch tok.Kind() {
+			case text.ListClose:
+				return nil
+			case text.MessageOpen:
+				if err := d.unmarshalMapEntry(fd, mmap, unmarshalMapValue); err != nil {
+					return err
+				}
+			default:
+				return d.unexpectedTokenError(tok)
+			}
+		}
+
+	default:
+		return d.unexpectedTokenError(tok)
+	}
+}
+
+// unmarshalMap unmarshals into given protoreflect.Map. A map value is a
+// textproto message containing {key: <kvalue>, value: <mvalue>}.
+func (d decoder) unmarshalMapEntry(fd pref.FieldDescriptor, mmap pref.Map, unmarshalMapValue func() (pref.Value, error)) error {
+	var key pref.MapKey
+	var pval pref.Value
+Loop:
+	for {
+		// Read field name.
+		tok, err := d.Read()
+		if err != nil {
+			return err
+		}
+		switch tok.Kind() {
+		case text.Name:
+			if tok.NameKind() != text.IdentName {
+				if !d.opts.DiscardUnknown {
+					return d.newError(tok.Pos(), "unknown map entry field %q", tok.RawString())
+				}
+				d.skipValue()
+				continue Loop
+			}
+			// Continue below.
+		case text.MessageClose:
+			break Loop
+		default:
+			return d.unexpectedTokenError(tok)
+		}
+
+		name := tok.IdentName()
+		switch name {
+		case "key":
+			if !tok.HasSeparator() {
+				return d.syntaxError(tok.Pos(), "missing field separator :")
+			}
+			if key.IsValid() {
+				return d.newError(tok.Pos(), `map entry "key" cannot be repeated`)
+			}
+			val, err := d.unmarshalScalar(fd.MapKey())
+			if err != nil {
+				return err
+			}
+			key = val.MapKey()
+
+		case "value":
+			if kind := fd.MapValue().Kind(); (kind != pref.MessageKind) && (kind != pref.GroupKind) {
+				if !tok.HasSeparator() {
+					return d.syntaxError(tok.Pos(), "missing field separator :")
+				}
+			}
+			if pval.IsValid() {
+				return d.newError(tok.Pos(), `map entry "value" cannot be repeated`)
+			}
+			pval, err = unmarshalMapValue()
+			if err != nil {
+				return err
+			}
+
+		default:
+			if !d.opts.DiscardUnknown {
+				return d.newError(tok.Pos(), "unknown map entry field %q", name)
+			}
+			d.skipValue()
+		}
+	}
+
+	if !key.IsValid() {
+		key = fd.MapKey().Default().MapKey()
+	}
+	if !pval.IsValid() {
+		switch fd.MapValue().Kind() {
+		case pref.MessageKind, pref.GroupKind:
+			// If value field is not set for message/group types, construct an
+			// empty one as default.
+			pval = mmap.NewValue()
+		default:
+			pval = fd.MapValue().Default()
+		}
+	}
+	mmap.Set(key, pval)
+	return nil
+}
+
+// unmarshalAny unmarshals an Any textproto. It can either be in expanded form
+// or non-expanded form.
+func (d decoder) unmarshalAny(m pref.Message, checkDelims bool) error {
+	var typeURL string
+	var bValue []byte
+
+	// hasFields tracks which valid fields have been seen in the loop below in
+	// order to flag an error if there are duplicates or conflicts. It may
+	// contain the strings "type_url", "value" and "expanded".  The literal
+	// "expanded" is used to indicate that the expanded form has been
+	// encountered already.
+	hasFields := map[string]bool{}
+
+	if checkDelims {
+		tok, err := d.Read()
+		if err != nil {
+			return err
+		}
+
+		if tok.Kind() != text.MessageOpen {
+			return d.unexpectedTokenError(tok)
+		}
+	}
+
+Loop:
+	for {
+		// Read field name. Can only have 3 possible field names, i.e. type_url,
+		// value and type URL name inside [].
+		tok, err := d.Read()
+		if err != nil {
+			return err
+		}
+		if typ := tok.Kind(); typ != text.Name {
+			if checkDelims {
+				if typ == text.MessageClose {
+					break Loop
+				}
+			} else if typ == text.EOF {
+				break Loop
+			}
+			return d.unexpectedTokenError(tok)
+		}
+
+		switch tok.NameKind() {
+		case text.IdentName:
+			// Both type_url and value fields require field separator :.
+			if !tok.HasSeparator() {
+				return d.syntaxError(tok.Pos(), "missing field separator :")
+			}
+
+			switch tok.IdentName() {
+			case "type_url":
+				if hasFields["type_url"] {
+					return d.newError(tok.Pos(), "duplicate Any type_url field")
+				}
+				if hasFields["expanded"] {
+					return d.newError(tok.Pos(), "conflict with [%s] field", typeURL)
+				}
+				tok, err := d.Read()
+				if err != nil {
+					return err
+				}
+				var ok bool
+				typeURL, ok = tok.String()
+				if !ok {
+					return d.newError(tok.Pos(), "invalid Any type_url: %v", tok.RawString())
+				}
+				hasFields["type_url"] = true
+
+			case "value":
+				if hasFields["value"] {
+					return d.newError(tok.Pos(), "duplicate Any value field")
+				}
+				if hasFields["expanded"] {
+					return d.newError(tok.Pos(), "conflict with [%s] field", typeURL)
+				}
+				tok, err := d.Read()
+				if err != nil {
+					return err
+				}
+				s, ok := tok.String()
+				if !ok {
+					return d.newError(tok.Pos(), "invalid Any value: %v", tok.RawString())
+				}
+				bValue = []byte(s)
+				hasFields["value"] = true
+
+			default:
+				if !d.opts.DiscardUnknown {
+					return d.newError(tok.Pos(), "invalid field name %q in google.protobuf.Any message", tok.RawString())
+				}
+			}
+
+		case text.TypeName:
+			if hasFields["expanded"] {
+				return d.newError(tok.Pos(), "cannot have more than one type")
+			}
+			if hasFields["type_url"] {
+				return d.newError(tok.Pos(), "conflict with type_url field")
+			}
+			typeURL = tok.TypeName()
+			var err error
+			bValue, err = d.unmarshalExpandedAny(typeURL, tok.Pos())
+			if err != nil {
+				return err
+			}
+			hasFields["expanded"] = true
+
+		default:
+			if !d.opts.DiscardUnknown {
+				return d.newError(tok.Pos(), "invalid field name %q in google.protobuf.Any message", tok.RawString())
+			}
+		}
+	}
+
+	fds := m.Descriptor().Fields()
+	if len(typeURL) > 0 {
+		m.Set(fds.ByNumber(fieldnum.Any_TypeUrl), pref.ValueOfString(typeURL))
+	}
+	if len(bValue) > 0 {
+		m.Set(fds.ByNumber(fieldnum.Any_Value), pref.ValueOfBytes(bValue))
+	}
+	return nil
+}
+
+func (d decoder) unmarshalExpandedAny(typeURL string, pos int) ([]byte, error) {
+	mt, err := d.opts.Resolver.FindMessageByURL(typeURL)
+	if err != nil {
+		return nil, d.newError(pos, "unable to resolve message [%v]: %v", typeURL, err)
+	}
+	// Create new message for the embedded message type and unmarshal the value
+	// field into it.
+	m := mt.New()
+	if err := d.unmarshalMessage(m, true); err != nil {
+		return nil, err
+	}
+	// Serialize the embedded message and return the resulting bytes.
+	b, err := proto.MarshalOptions{
+		AllowPartial:  true, // Never check required fields inside an Any.
+		Deterministic: true,
+	}.Marshal(m.Interface())
+	if err != nil {
+		return nil, d.newError(pos, "error in marshaling message into Any.value: %v", err)
+	}
+	return b, nil
+}
+
+// skipValue makes the decoder parse a field value in order to advance the read
+// to the next field. It relies on Read returning an error if the types are not
+// in valid sequence.
+func (d decoder) skipValue() error {
+	tok, err := d.Read()
+	if err != nil {
+		return err
+	}
+	// Only need to continue reading for messages and lists.
+	switch tok.Kind() {
+	case text.MessageOpen:
+		return d.skipMessageValue()
+
+	case text.ListOpen:
+		for {
+			tok, err := d.Read()
+			if err != nil {
+				return err
+			}
+			switch tok.Kind() {
+			case text.ListClose:
+				return nil
+			case text.MessageOpen:
+				return d.skipMessageValue()
+			default:
+				// Skip items. This will not validate whether skipped values are
+				// of the same type or not, same behavior as C++
+				// TextFormat::Parser::AllowUnknownField(true) version 3.8.0.
+				if err := d.skipValue(); err != nil {
+					return err
+				}
+			}
+		}
+	}
+	return nil
+}
+
+// skipMessageValue makes the decoder parse and skip over all fields in a
+// message. It assumes that the previous read type is MessageOpen.
+func (d decoder) skipMessageValue() error {
+	for {
+		tok, err := d.Read()
+		if err != nil {
+			return err
+		}
+		switch tok.Kind() {
+		case text.MessageClose:
+			return nil
+		case text.Name:
+			if err := d.skipValue(); err != nil {
+				return err
+			}
+		}
+	}
+}

vendor/google.golang.org/protobuf/encoding/prototext/doc.go

@@ -0,0 +1,7 @@
+// Copyright 2019 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// Package prototext marshals and unmarshals protocol buffer messages as the
+// textproto format.
+package prototext

vendor/google.golang.org/protobuf/encoding/prototext/encode.go

@@ -0,0 +1,426 @@
+// Copyright 2018 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package prototext
+
+import (
+	"fmt"
+	"sort"
+	"strconv"
+	"unicode/utf8"
+
+	"google.golang.org/protobuf/encoding/protowire"
+	"google.golang.org/protobuf/internal/encoding/messageset"
+	"google.golang.org/protobuf/internal/encoding/text"
+	"google.golang.org/protobuf/internal/errors"
+	"google.golang.org/protobuf/internal/fieldnum"
+	"google.golang.org/protobuf/internal/flags"
+	"google.golang.org/protobuf/internal/mapsort"
+	"google.golang.org/protobuf/internal/pragma"
+	"google.golang.org/protobuf/internal/strs"
+	"google.golang.org/protobuf/proto"
+	pref "google.golang.org/protobuf/reflect/protoreflect"
+	"google.golang.org/protobuf/reflect/protoregistry"
+)
+
+const defaultIndent = "  "
+
+// Format formats the message as a multiline string.
+// This function is only intended for human consumption and ignores errors.
+// Do not depend on the output being stable. It may change over time across
+// different versions of the program.
+func Format(m proto.Message) string {
+	return MarshalOptions{Multiline: true}.Format(m)
+}
+
+// Marshal writes the given proto.Message in textproto format using default
+// options. Do not depend on the output being stable. It may change over time
+// across different versions of the program.
+func Marshal(m proto.Message) ([]byte, error) {
+	return MarshalOptions{}.Marshal(m)
+}
+
+// MarshalOptions is a configurable text format marshaler.
+type MarshalOptions struct {
+	pragma.NoUnkeyedLiterals
+
+	// Multiline specifies whether the marshaler should format the output in
+	// indented-form with every textual element on a new line.
+	// If Indent is an empty string, then an arbitrary indent is chosen.
+	Multiline bool
+
+	// Indent specifies the set of indentation characters to use in a multiline
+	// formatted output such that every entry is preceded by Indent and
+	// terminated by a newline. If non-empty, then Multiline is treated as true.
+	// Indent can only be composed of space or tab characters.
+	Indent string
+
+	// EmitASCII specifies whether to format strings and bytes as ASCII only
+	// as opposed to using UTF-8 encoding when possible.
+	EmitASCII bool
+
+	// allowInvalidUTF8 specifies whether to permit the encoding of strings
+	// with invalid UTF-8. This is unexported as it is intended to only
+	// be specified by the Format method.
+	allowInvalidUTF8 bool
+
+	// AllowPartial allows messages that have missing required fields to marshal
+	// without returning an error. If AllowPartial is false (the default),
+	// Marshal will return error if there are any missing required fields.
+	AllowPartial bool
+
+	// EmitUnknown specifies whether to emit unknown fields in the output.
+	// If specified, the unmarshaler may be unable to parse the output.
+	// The default is to exclude unknown fields.
+	EmitUnknown bool
+
+	// Resolver is used for looking up types when expanding google.protobuf.Any
+	// messages. If nil, this defaults to using protoregistry.GlobalTypes.
+	Resolver interface {
+		protoregistry.ExtensionTypeResolver
+		protoregistry.MessageTypeResolver
+	}
+}
+
+// Format formats the message as a string.
+// This method is only intended for human consumption and ignores errors.
+// Do not depend on the output being stable. It may change over time across
+// different versions of the program.
+func (o MarshalOptions) Format(m proto.Message) string {
+	if m == nil || !m.ProtoReflect().IsValid() {
+		return "<nil>" // invalid syntax, but okay since this is for debugging
+	}
+	o.allowInvalidUTF8 = true
+	o.AllowPartial = true
+	o.EmitUnknown = true
+	b, _ := o.Marshal(m)
+	return string(b)
+}
+
+// Marshal writes the given proto.Message in textproto format using options in
+// MarshalOptions object. Do not depend on the output being stable. It may
+// change over time across different versions of the program.
+func (o MarshalOptions) Marshal(m proto.Message) ([]byte, error) {
+	var delims = [2]byte{'{', '}'}
+
+	if o.Multiline && o.Indent == "" {
+		o.Indent = defaultIndent
+	}
+	if o.Resolver == nil {
+		o.Resolver = protoregistry.GlobalTypes
+	}
+
+	internalEnc, err := text.NewEncoder(o.Indent, delims, o.EmitASCII)
+	if err != nil {
+		return nil, err
+	}
+
+	// Treat nil message interface as an empty message,
+	// in which case there is nothing to output.
+	if m == nil {
+		return []byte{}, nil
+	}
+
+	enc := encoder{internalEnc, o}
+	err = enc.marshalMessage(m.ProtoReflect(), false)
+	if err != nil {
+		return nil, err
+	}
+	out := enc.Bytes()
+	if len(o.Indent) > 0 && len(out) > 0 {
+		out = append(out, '\n')
+	}
+	if o.AllowPartial {
+		return out, nil
+	}
+	return out, proto.CheckInitialized(m)
+}
+
+type encoder struct {
+	*text.Encoder
+	opts MarshalOptions
+}
+
+// marshalMessage marshals the given protoreflect.Message.
+func (e encoder) marshalMessage(m pref.Message, inclDelims bool) error {
+	messageDesc := m.Descriptor()
+	if !flags.ProtoLegacy && messageset.IsMessageSet(messageDesc) {
+		return errors.New("no support for proto1 MessageSets")
+	}
+
+	if inclDelims {
+		e.StartMessage()
+		defer e.EndMessage()
+	}
+
+	// Handle Any expansion.
+	if messageDesc.FullName() == "google.protobuf.Any" {
+		if e.marshalAny(m) {
+			return nil
+		}
+		// If unable to expand, continue on to marshal Any as a regular message.
+	}
+
+	// Marshal known fields.
+	fieldDescs := messageDesc.Fields()
+	size := fieldDescs.Len()
+	for i := 0; i < size; {
+		fd := fieldDescs.Get(i)
+		if od := fd.ContainingOneof(); od != nil {
+			fd = m.WhichOneof(od)
+			i += od.Fields().Len()
+		} else {
+			i++
+		}
+
+		if fd == nil || !m.Has(fd) {
+			continue
+		}
+
+		name := fd.Name()
+		// Use type name for group field name.
+		if fd.Kind() == pref.GroupKind {
+			name = fd.Message().Name()
+		}
+		val := m.Get(fd)
+		if err := e.marshalField(string(name), val, fd); err != nil {
+			return err
+		}
+	}
+
+	// Marshal extensions.
+	if err := e.marshalExtensions(m); err != nil {
+		return err
+	}
+
+	// Marshal unknown fields.
+	if e.opts.EmitUnknown {
+		e.marshalUnknown(m.GetUnknown())
+	}
+
+	return nil
+}
+
+// marshalField marshals the given field with protoreflect.Value.
+func (e encoder) marshalField(name string, val pref.Value, fd pref.FieldDescriptor) error {
+	switch {
+	case fd.IsList():
+		return e.marshalList(name, val.List(), fd)
+	case fd.IsMap():
+		return e.marshalMap(name, val.Map(), fd)
+	default:
+		e.WriteName(name)
+		return e.marshalSingular(val, fd)
+	}
+}
+
+// marshalSingular marshals the given non-repeated field value. This includes
+// all scalar types, enums, messages, and groups.
+func (e encoder) marshalSingular(val pref.Value, fd pref.FieldDescriptor) error {
+	kind := fd.Kind()
+	switch kind {
+	case pref.BoolKind:
+		e.WriteBool(val.Bool())
+
+	case pref.StringKind:
+		s := val.String()
+		if !e.opts.allowInvalidUTF8 && strs.EnforceUTF8(fd) && !utf8.ValidString(s) {
+			return errors.InvalidUTF8(string(fd.FullName()))
+		}
+		e.WriteString(s)
+
+	case pref.Int32Kind, pref.Int64Kind,
+		pref.Sint32Kind, pref.Sint64Kind,
+		pref.Sfixed32Kind, pref.Sfixed64Kind:
+		e.WriteInt(val.Int())
+
+	case pref.Uint32Kind, pref.Uint64Kind,
+		pref.Fixed32Kind, pref.Fixed64Kind:
+		e.WriteUint(val.Uint())
+
+	case pref.FloatKind:
+		// Encoder.WriteFloat handles the special numbers NaN and infinites.
+		e.WriteFloat(val.Float(), 32)
+
+	case pref.DoubleKind:
+		// Encoder.WriteFloat handles the special numbers NaN and infinites.
+		e.WriteFloat(val.Float(), 64)
+
+	case pref.BytesKind:
+		e.WriteString(string(val.Bytes()))
+
+	case pref.EnumKind:
+		num := val.Enum()
+		if desc := fd.Enum().Values().ByNumber(num); desc != nil {
+			e.WriteLiteral(string(desc.Name()))
+		} else {
+			// Use numeric value if there is no enum description.
+			e.WriteInt(int64(num))
+		}
+
+	case pref.MessageKind, pref.GroupKind:
+		return e.marshalMessage(val.Message(), true)
+
+	default:
+		panic(fmt.Sprintf("%v has unknown kind: %v", fd.FullName(), kind))
+	}
+	return nil
+}
+
+// marshalList marshals the given protoreflect.List as multiple name-value fields.
+func (e encoder) marshalList(name string, list pref.List, fd pref.FieldDescriptor) error {
+	size := list.Len()
+	for i := 0; i < size; i++ {
+		e.WriteName(name)
+		if err := e.marshalSingular(list.Get(i), fd); err != nil {
+			return err
+		}
+	}
+	return nil
+}
+
+// marshalMap marshals the given protoreflect.Map as multiple name-value fields.
+func (e encoder) marshalMap(name string, mmap pref.Map, fd pref.FieldDescriptor) error {
+	var err error
+	mapsort.Range(mmap, fd.MapKey().Kind(), func(key pref.MapKey, val pref.Value) bool {
+		e.WriteName(name)
+		e.StartMessage()
+		defer e.EndMessage()
+
+		e.WriteName("key")
+		err = e.marshalSingular(key.Value(), fd.MapKey())
+		if err != nil {
+			return false
+		}
+
+		e.WriteName("value")
+		err = e.marshalSingular(val, fd.MapValue())
+		if err != nil {
+			return false
+		}
+		return true
+	})
+	return err
+}
+
+// marshalExtensions marshals extension fields.
+func (e encoder) marshalExtensions(m pref.Message) error {
+	type entry struct {
+		key   string
+		value pref.Value
+		desc  pref.FieldDescriptor
+	}
+
+	// Get a sorted list based on field key first.
+	var entries []entry
+	m.Range(func(fd pref.FieldDescriptor, v pref.Value) bool {
+		if !fd.IsExtension() {
+			return true
+		}
+		// For MessageSet extensions, the name used is the parent message.
+		name := fd.FullName()
+		if messageset.IsMessageSetExtension(fd) {
+			name = name.Parent()
+		}
+		entries = append(entries, entry{
+			key:   string(name),
+			value: v,
+			desc:  fd,
+		})
+		return true
+	})
+	// Sort extensions lexicographically.
+	sort.Slice(entries, func(i, j int) bool {
+		return entries[i].key < entries[j].key
+	})
+
+	// Write out sorted list.
+	for _, entry := range entries {
+		// Extension field name is the proto field name enclosed in [].
+		name := "[" + entry.key + "]"
+		if err := e.marshalField(name, entry.value, entry.desc); err != nil {
+			return err
+		}
+	}
+	return nil
+}
+
+// marshalUnknown parses the given []byte and marshals fields out.
+// This function assumes proper encoding in the given []byte.
+func (e encoder) marshalUnknown(b []byte) {
+	const dec = 10
+	const hex = 16
+	for len(b) > 0 {
+		num, wtype, n := protowire.ConsumeTag(b)
+		b = b[n:]
+		e.WriteName(strconv.FormatInt(int64(num), dec))
+
+		switch wtype {
+		case protowire.VarintType:
+			var v uint64
+			v, n = protowire.ConsumeVarint(b)
+			e.WriteUint(v)
+		case protowire.Fixed32Type:
+			var v uint32
+			v, n = protowire.ConsumeFixed32(b)
+			e.WriteLiteral("0x" + strconv.FormatUint(uint64(v), hex))
+		case protowire.Fixed64Type:
+			var v uint64
+			v, n = protowire.ConsumeFixed64(b)
+			e.WriteLiteral("0x" + strconv.FormatUint(v, hex))
+		case protowire.BytesType:
+			var v []byte
+			v, n = protowire.ConsumeBytes(b)
+			e.WriteString(string(v))
+		case protowire.StartGroupType:
+			e.StartMessage()
+			var v []byte
+			v, n = protowire.ConsumeGroup(num, b)
+			e.marshalUnknown(v)
+			e.EndMessage()
+		default:
+			panic(fmt.Sprintf("prototext: error parsing unknown field wire type: %v", wtype))
+		}
+
+		b = b[n:]
+	}
+}
+
+// marshalAny marshals the given google.protobuf.Any message in expanded form.
+// It returns true if it was able to marshal, else false.
+func (e encoder) marshalAny(any pref.Message) bool {
+	// Construct the embedded message.
+	fds := any.Descriptor().Fields()
+	fdType := fds.ByNumber(fieldnum.Any_TypeUrl)
+	typeURL := any.Get(fdType).String()
+	mt, err := e.opts.Resolver.FindMessageByURL(typeURL)
+	if err != nil {
+		return false
+	}
+	m := mt.New().Interface()
+
+	// Unmarshal bytes into embedded message.
+	fdValue := fds.ByNumber(fieldnum.Any_Value)
+	value := any.Get(fdValue)
+	err = proto.UnmarshalOptions{
+		AllowPartial: true,
+		Resolver:     e.opts.Resolver,
+	}.Unmarshal(value.Bytes(), m)
+	if err != nil {
+		return false
+	}
+
+	// Get current encoder position. If marshaling fails, reset encoder output
+	// back to this position.
+	pos := e.Snapshot()
+
+	// Field name is the proto field name enclosed in [].
+	e.WriteName("[" + typeURL + "]")
+	err = e.marshalMessage(m.ProtoReflect(), true)
+	if err != nil {
+		e.Reset(pos)
+		return false
+	}
+	return true
+}

vendor/google.golang.org/protobuf/encoding/protowire/wire.go

@@ -0,0 +1,538 @@
+// Copyright 2018 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// Package protowire parses and formats the raw wire encoding.
+// See https://developers.google.com/protocol-buffers/docs/encoding.
+//
+// For marshaling and unmarshaling entire protobuf messages,
+// use the "google.golang.org/protobuf/proto" package instead.
+package protowire
+
+import (
+	"io"
+	"math"
+	"math/bits"
+
+	"google.golang.org/protobuf/internal/errors"
+)
+
+// Number represents the field number.
+type Number int32
+
+const (
+	MinValidNumber      Number = 1
+	FirstReservedNumber Number = 19000
+	LastReservedNumber  Number = 19999
+	MaxValidNumber      Number = 1<<29 - 1
+)
+
+// IsValid reports whether the field number is semantically valid.
+//
+// Note that while numbers within the reserved range are semantically invalid,
+// they are syntactically valid in the wire format.
+// Implementations may treat records with reserved field numbers as unknown.
+func (n Number) IsValid() bool {
+	return MinValidNumber <= n && n < FirstReservedNumber || LastReservedNumber < n && n <= MaxValidNumber
+}
+
+// Type represents the wire type.
+type Type int8
+
+const (
+	VarintType     Type = 0
+	Fixed32Type    Type = 5
+	Fixed64Type    Type = 1
+	BytesType      Type = 2
+	StartGroupType Type = 3
+	EndGroupType   Type = 4
+)
+
+const (
+	_ = -iota
+	errCodeTruncated
+	errCodeFieldNumber
+	errCodeOverflow
+	errCodeReserved
+	errCodeEndGroup
+)
+
+var (
+	errFieldNumber = errors.New("invalid field number")
+	errOverflow    = errors.New("variable length integer overflow")
+	errReserved    = errors.New("cannot parse reserved wire type")
+	errEndGroup    = errors.New("mismatching end group marker")
+	errParse       = errors.New("parse error")
+)
+
+// ParseError converts an error code into an error value.
+// This returns nil if n is a non-negative number.
+func ParseError(n int) error {
+	if n >= 0 {
+		return nil
+	}
+	switch n {
+	case errCodeTruncated:
+		return io.ErrUnexpectedEOF
+	case errCodeFieldNumber:
+		return errFieldNumber
+	case errCodeOverflow:
+		return errOverflow
+	case errCodeReserved:
+		return errReserved
+	case errCodeEndGroup:
+		return errEndGroup
+	default:
+		return errParse
+	}
+}
+
+// ConsumeField parses an entire field record (both tag and value) and returns
+// the field number, the wire type, and the total length.
+// This returns a negative length upon an error (see ParseError).
+//
+// The total length includes the tag header and the end group marker (if the
+// field is a group).
+func ConsumeField(b []byte) (Number, Type, int) {
+	num, typ, n := ConsumeTag(b)
+	if n < 0 {
+		return 0, 0, n // forward error code
+	}
+	m := ConsumeFieldValue(num, typ, b[n:])
+	if m < 0 {
+		return 0, 0, m // forward error code
+	}
+	return num, typ, n + m
+}
+
+// ConsumeFieldValue parses a field value and returns its length.
+// This assumes that the field Number and wire Type have already been parsed.
+// This returns a negative length upon an error (see ParseError).
+//
+// When parsing a group, the length includes the end group marker and
+// the end group is verified to match the starting field number.
+func ConsumeFieldValue(num Number, typ Type, b []byte) (n int) {
+	switch typ {
+	case VarintType:
+		_, n = ConsumeVarint(b)
+		return n
+	case Fixed32Type:
+		_, n = ConsumeFixed32(b)
+		return n
+	case Fixed64Type:
+		_, n = ConsumeFixed64(b)
+		return n
+	case BytesType:
+		_, n = ConsumeBytes(b)
+		return n
+	case StartGroupType:
+		n0 := len(b)
+		for {
+			num2, typ2, n := ConsumeTag(b)
+			if n < 0 {
+				return n // forward error code
+			}
+			b = b[n:]
+			if typ2 == EndGroupType {
+				if num != num2 {
+					return errCodeEndGroup
+				}
+				return n0 - len(b)
+			}
+
+			n = ConsumeFieldValue(num2, typ2, b)
+			if n < 0 {
+				return n // forward error code
+			}
+			b = b[n:]
+		}
+	case EndGroupType:
+		return errCodeEndGroup
+	default:
+		return errCodeReserved
+	}
+}
+
+// AppendTag encodes num and typ as a varint-encoded tag and appends it to b.
+func AppendTag(b []byte, num Number, typ Type) []byte {
+	return AppendVarint(b, EncodeTag(num, typ))
+}
+
+// ConsumeTag parses b as a varint-encoded tag, reporting its length.
+// This returns a negative length upon an error (see ParseError).
+func ConsumeTag(b []byte) (Number, Type, int) {
+	v, n := ConsumeVarint(b)
+	if n < 0 {
+		return 0, 0, n // forward error code
+	}
+	num, typ := DecodeTag(v)
+	if num < MinValidNumber {
+		return 0, 0, errCodeFieldNumber
+	}
+	return num, typ, n
+}
+
+func SizeTag(num Number) int {
+	return SizeVarint(EncodeTag(num, 0)) // wire type has no effect on size
+}
+
+// AppendVarint appends v to b as a varint-encoded uint64.
+func AppendVarint(b []byte, v uint64) []byte {
+	switch {
+	case v < 1<<7:
+		b = append(b, byte(v))
+	case v < 1<<14:
+		b = append(b,
+			byte((v>>0)&0x7f|0x80),
+			byte(v>>7))
+	case v < 1<<21:
+		b = append(b,
+			byte((v>>0)&0x7f|0x80),
+			byte((v>>7)&0x7f|0x80),
+			byte(v>>14))
+	case v < 1<<28:
+		b = append(b,
+			byte((v>>0)&0x7f|0x80),
+			byte((v>>7)&0x7f|0x80),
+			byte((v>>14)&0x7f|0x80),
+			byte(v>>21))
+	case v < 1<<35:
+		b = append(b,
+			byte((v>>0)&0x7f|0x80),
+			byte((v>>7)&0x7f|0x80),
+			byte((v>>14)&0x7f|0x80),
+			byte((v>>21)&0x7f|0x80),
+			byte(v>>28))
+	case v < 1<<42:
+		b = append(b,
+			byte((v>>0)&0x7f|0x80),
+			byte((v>>7)&0x7f|0x80),
+			byte((v>>14)&0x7f|0x80),
+			byte((v>>21)&0x7f|0x80),
+			byte((v>>28)&0x7f|0x80),
+			byte(v>>35))
+	case v < 1<<49:
+		b = append(b,
+			byte((v>>0)&0x7f|0x80),
+			byte((v>>7)&0x7f|0x80),
+			byte((v>>14)&0x7f|0x80),
+			byte((v>>21)&0x7f|0x80),
+			byte((v>>28)&0x7f|0x80),
+			byte((v>>35)&0x7f|0x80),
+			byte(v>>42))
+	case v < 1<<56:
+		b = append(b,
+			byte((v>>0)&0x7f|0x80),
+			byte((v>>7)&0x7f|0x80),
+			byte((v>>14)&0x7f|0x80),
+			byte((v>>21)&0x7f|0x80),
+			byte((v>>28)&0x7f|0x80),
+			byte((v>>35)&0x7f|0x80),
+			byte((v>>42)&0x7f|0x80),
+			byte(v>>49))
+	case v < 1<<63:
+		b = append(b,
+			byte((v>>0)&0x7f|0x80),
+			byte((v>>7)&0x7f|0x80),
+			byte((v>>14)&0x7f|0x80),
+			byte((v>>21)&0x7f|0x80),
+			byte((v>>28)&0x7f|0x80),
+			byte((v>>35)&0x7f|0x80),
+			byte((v>>42)&0x7f|0x80),
+			byte((v>>49)&0x7f|0x80),
+			byte(v>>56))
+	default:
+		b = append(b,
+			byte((v>>0)&0x7f|0x80),
+			byte((v>>7)&0x7f|0x80),
+			byte((v>>14)&0x7f|0x80),
+			byte((v>>21)&0x7f|0x80),
+			byte((v>>28)&0x7f|0x80),
+			byte((v>>35)&0x7f|0x80),
+			byte((v>>42)&0x7f|0x80),
+			byte((v>>49)&0x7f|0x80),
+			byte((v>>56)&0x7f|0x80),
+			1)
+	}
+	return b
+}
+
+// ConsumeVarint parses b as a varint-encoded uint64, reporting its length.
+// This returns a negative length upon an error (see ParseError).
+func ConsumeVarint(b []byte) (v uint64, n int) {
+	var y uint64
+	if len(b) <= 0 {
+		return 0, errCodeTruncated
+	}
+	v = uint64(b[0])
+	if v < 0x80 {
+		return v, 1
+	}
+	v -= 0x80
+
+	if len(b) <= 1 {
+		return 0, errCodeTruncated
+	}
+	y = uint64(b[1])
+	v += y << 7
+	if y < 0x80 {
+		return v, 2
+	}
+	v -= 0x80 << 7
+
+	if len(b) <= 2 {
+		return 0, errCodeTruncated
+	}
+	y = uint64(b[2])
+	v += y << 14
+	if y < 0x80 {
+		return v, 3
+	}
+	v -= 0x80 << 14
+
+	if len(b) <= 3 {
+		return 0, errCodeTruncated
+	}
+	y = uint64(b[3])
+	v += y << 21
+	if y < 0x80 {
+		return v, 4
+	}
+	v -= 0x80 << 21
+
+	if len(b) <= 4 {
+		return 0, errCodeTruncated
+	}
+	y = uint64(b[4])
+	v += y << 28
+	if y < 0x80 {
+		return v, 5
+	}
+	v -= 0x80 << 28
+
+	if len(b) <= 5 {
+		return 0, errCodeTruncated
+	}
+	y = uint64(b[5])
+	v += y << 35
+	if y < 0x80 {
+		return v, 6
+	}
+	v -= 0x80 << 35
+
+	if len(b) <= 6 {
+		return 0, errCodeTruncated
+	}
+	y = uint64(b[6])
+	v += y << 42
+	if y < 0x80 {
+		return v, 7
+	}
+	v -= 0x80 << 42
+
+	if len(b) <= 7 {
+		return 0, errCodeTruncated
+	}
+	y = uint64(b[7])
+	v += y << 49
+	if y < 0x80 {
+		return v, 8
+	}
+	v -= 0x80 << 49
+
+	if len(b) <= 8 {
+		return 0, errCodeTruncated
+	}
+	y = uint64(b[8])
+	v += y << 56
+	if y < 0x80 {
+		return v, 9
+	}
+	v -= 0x80 << 56
+
+	if len(b) <= 9 {
+		return 0, errCodeTruncated
+	}
+	y = uint64(b[9])
+	v += y << 63
+	if y < 2 {
+		return v, 10
+	}
+	return 0, errCodeOverflow
+}
+
+// SizeVarint returns the encoded size of a varint.
+// The size is guaranteed to be within 1 and 10, inclusive.
+func SizeVarint(v uint64) int {
+	// This computes 1 + (bits.Len64(v)-1)/7.
+	// 9/64 is a good enough approximation of 1/7
+	return int(9*uint32(bits.Len64(v))+64) / 64
+}
+
+// AppendFixed32 appends v to b as a little-endian uint32.
+func AppendFixed32(b []byte, v uint32) []byte {
+	return append(b,
+		byte(v>>0),
+		byte(v>>8),
+		byte(v>>16),
+		byte(v>>24))
+}
+
+// ConsumeFixed32 parses b as a little-endian uint32, reporting its length.
+// This returns a negative length upon an error (see ParseError).
+func ConsumeFixed32(b []byte) (v uint32, n int) {
+	if len(b) < 4 {
+		return 0, errCodeTruncated
+	}
+	v = uint32(b[0])<<0 | uint32(b[1])<<8 | uint32(b[2])<<16 | uint32(b[3])<<24
+	return v, 4
+}
+
+// SizeFixed32 returns the encoded size of a fixed32; which is always 4.
+func SizeFixed32() int {
+	return 4
+}
+
+// AppendFixed64 appends v to b as a little-endian uint64.
+func AppendFixed64(b []byte, v uint64) []byte {
+	return append(b,
+		byte(v>>0),
+		byte(v>>8),
+		byte(v>>16),
+		byte(v>>24),
+		byte(v>>32),
+		byte(v>>40),
+		byte(v>>48),
+		byte(v>>56))
+}
+
+// ConsumeFixed64 parses b as a little-endian uint64, reporting its length.
+// This returns a negative length upon an error (see ParseError).
+func ConsumeFixed64(b []byte) (v uint64, n int) {
+	if len(b) < 8 {
+		return 0, errCodeTruncated
+	}
+	v = uint64(b[0])<<0 | uint64(b[1])<<8 | uint64(b[2])<<16 | uint64(b[3])<<24 | uint64(b[4])<<32 | uint64(b[5])<<40 | uint64(b[6])<<48 | uint64(b[7])<<56
+	return v, 8
+}
+
+// SizeFixed64 returns the encoded size of a fixed64; which is always 8.
+func SizeFixed64() int {
+	return 8
+}
+
+// AppendBytes appends v to b as a length-prefixed bytes value.
+func AppendBytes(b []byte, v []byte) []byte {
+	return append(AppendVarint(b, uint64(len(v))), v...)
+}
+
+// ConsumeBytes parses b as a length-prefixed bytes value, reporting its length.
+// This returns a negative length upon an error (see ParseError).
+func ConsumeBytes(b []byte) (v []byte, n int) {
+	m, n := ConsumeVarint(b)
+	if n < 0 {
+		return nil, n // forward error code
+	}
+	if m > uint64(len(b[n:])) {
+		return nil, errCodeTruncated
+	}
+	return b[n:][:m], n + int(m)
+}
+
+// SizeBytes returns the encoded size of a length-prefixed bytes value,
+// given only the length.
+func SizeBytes(n int) int {
+	return SizeVarint(uint64(n)) + n
+}
+
+// AppendString appends v to b as a length-prefixed bytes value.
+func AppendString(b []byte, v string) []byte {
+	return append(AppendVarint(b, uint64(len(v))), v...)
+}
+
+// ConsumeString parses b as a length-prefixed bytes value, reporting its length.
+// This returns a negative length upon an error (see ParseError).
+func ConsumeString(b []byte) (v string, n int) {
+	bb, n := ConsumeBytes(b)
+	return string(bb), n
+}
+
+// AppendGroup appends v to b as group value, with a trailing end group marker.
+// The value v must not contain the end marker.
+func AppendGroup(b []byte, num Number, v []byte) []byte {
+	return AppendVarint(append(b, v...), EncodeTag(num, EndGroupType))
+}
+
+// ConsumeGroup parses b as a group value until the trailing end group marker,
+// and verifies that the end marker matches the provided num. The value v
+// does not contain the end marker, while the length does contain the end marker.
+// This returns a negative length upon an error (see ParseError).
+func ConsumeGroup(num Number, b []byte) (v []byte, n int) {
+	n = ConsumeFieldValue(num, StartGroupType, b)
+	if n < 0 {
+		return nil, n // forward error code
+	}
+	b = b[:n]
+
+	// Truncate off end group marker, but need to handle denormalized varints.
+	// Assuming end marker is never 0 (which is always the case since
+	// EndGroupType is non-zero), we can truncate all trailing bytes where the
+	// lower 7 bits are all zero (implying that the varint is denormalized).
+	for len(b) > 0 && b[len(b)-1]&0x7f == 0 {
+		b = b[:len(b)-1]
+	}
+	b = b[:len(b)-SizeTag(num)]
+	return b, n
+}
+
+// SizeGroup returns the encoded size of a group, given only the length.
+func SizeGroup(num Number, n int) int {
+	return n + SizeTag(num)
+}
+
+// DecodeTag decodes the field Number and wire Type from its unified form.
+// The Number is -1 if the decoded field number overflows int32.
+// Other than overflow, this does not check for field number validity.
+func DecodeTag(x uint64) (Number, Type) {
+	// NOTE: MessageSet allows for larger field numbers than normal.
+	if x>>3 > uint64(math.MaxInt32) {
+		return -1, 0
+	}
+	return Number(x >> 3), Type(x & 7)
+}
+
+// EncodeTag encodes the field Number and wire Type into its unified form.
+func EncodeTag(num Number, typ Type) uint64 {
+	return uint64(num)<<3 | uint64(typ&7)
+}
+
+// DecodeZigZag decodes a zig-zag-encoded uint64 as an int64.
+//	Input:  {…,  5,  3,  1,  0,  2,  4,  6, …}
+//	Output: {…, -3, -2, -1,  0, +1, +2, +3, …}
+func DecodeZigZag(x uint64) int64 {
+	return int64(x>>1) ^ int64(x)<<63>>63
+}
+
+// EncodeZigZag encodes an int64 as a zig-zag-encoded uint64.
+//	Input:  {…, -3, -2, -1,  0, +1, +2, +3, …}
+//	Output: {…,  5,  3,  1,  0,  2,  4,  6, …}
+func EncodeZigZag(x int64) uint64 {
+	return uint64(x<<1) ^ uint64(x>>63)
+}
+
+// DecodeBool decodes a uint64 as a bool.
+//	Input:  {    0,    1,    2, …}
+//	Output: {false, true, true, …}
+func DecodeBool(x uint64) bool {
+	return x != 0
+}
+
+// EncodeBool encodes a bool as a uint64.
+//	Input:  {false, true}
+//	Output: {    0,    1}
+func EncodeBool(x bool) uint64 {
+	if x {
+		return 1
+	}
+	return 0
+}

vendor/google.golang.org/protobuf/internal/descfmt/stringer.go

@@ -0,0 +1,316 @@
+// Copyright 2018 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// Package descfmt provides functionality to format descriptors.
+package descfmt
+
+import (
+	"fmt"
+	"io"
+	"reflect"
+	"strconv"
+	"strings"
+
+	"google.golang.org/protobuf/internal/detrand"
+	"google.golang.org/protobuf/internal/pragma"
+	pref "google.golang.org/protobuf/reflect/protoreflect"
+)
+
+type list interface {
+	Len() int
+	pragma.DoNotImplement
+}
+
+func FormatList(s fmt.State, r rune, vs list) {
+	io.WriteString(s, formatListOpt(vs, true, r == 'v' && (s.Flag('+') || s.Flag('#'))))
+}
+func formatListOpt(vs list, isRoot, allowMulti bool) string {
+	start, end := "[", "]"
+	if isRoot {
+		var name string
+		switch vs.(type) {
+		case pref.Names:
+			name = "Names"
+		case pref.FieldNumbers:
+			name = "FieldNumbers"
+		case pref.FieldRanges:
+			name = "FieldRanges"
+		case pref.EnumRanges:
+			name = "EnumRanges"
+		case pref.FileImports:
+			name = "FileImports"
+		case pref.Descriptor:
+			name = reflect.ValueOf(vs).MethodByName("Get").Type().Out(0).Name() + "s"
+		}
+		start, end = name+"{", "}"
+	}
+
+	var ss []string
+	switch vs := vs.(type) {
+	case pref.Names:
+		for i := 0; i < vs.Len(); i++ {
+			ss = append(ss, fmt.Sprint(vs.Get(i)))
+		}
+		return start + joinStrings(ss, false) + end
+	case pref.FieldNumbers:
+		for i := 0; i < vs.Len(); i++ {
+			ss = append(ss, fmt.Sprint(vs.Get(i)))
+		}
+		return start + joinStrings(ss, false) + end
+	case pref.FieldRanges:
+		for i := 0; i < vs.Len(); i++ {
+			r := vs.Get(i)
+			if r[0]+1 == r[1] {
+				ss = append(ss, fmt.Sprintf("%d", r[0]))
+			} else {
+				ss = append(ss, fmt.Sprintf("%d:%d", r[0], r[1])) // enum ranges are end exclusive
+			}
+		}
+		return start + joinStrings(ss, false) + end
+	case pref.EnumRanges:
+		for i := 0; i < vs.Len(); i++ {
+			r := vs.Get(i)
+			if r[0] == r[1] {
+				ss = append(ss, fmt.Sprintf("%d", r[0]))
+			} else {
+				ss = append(ss, fmt.Sprintf("%d:%d", r[0], int64(r[1])+1)) // enum ranges are end inclusive
+			}
+		}
+		return start + joinStrings(ss, false) + end
+	case pref.FileImports:
+		for i := 0; i < vs.Len(); i++ {
+			var rs records
+			rs.Append(reflect.ValueOf(vs.Get(i)), "Path", "Package", "IsPublic", "IsWeak")
+			ss = append(ss, "{"+rs.Join()+"}")
+		}
+		return start + joinStrings(ss, allowMulti) + end
+	default:
+		_, isEnumValue := vs.(pref.EnumValueDescriptors)
+		for i := 0; i < vs.Len(); i++ {
+			m := reflect.ValueOf(vs).MethodByName("Get")
+			v := m.Call([]reflect.Value{reflect.ValueOf(i)})[0].Interface()
+			ss = append(ss, formatDescOpt(v.(pref.Descriptor), false, allowMulti && !isEnumValue))
+		}
+		return start + joinStrings(ss, allowMulti && isEnumValue) + end
+	}
+}
+
+// descriptorAccessors is a list of accessors to print for each descriptor.
+//
+// Do not print all accessors since some contain redundant information,
+// while others are pointers that we do not want to follow since the descriptor
+// is actually a cyclic graph.
+//
+// Using a list allows us to print the accessors in a sensible order.
+var descriptorAccessors = map[reflect.Type][]string{
+	reflect.TypeOf((*pref.FileDescriptor)(nil)).Elem():      {"Path", "Package", "Imports", "Messages", "Enums", "Extensions", "Services"},
+	reflect.TypeOf((*pref.MessageDescriptor)(nil)).Elem():   {"IsMapEntry", "Fields", "Oneofs", "ReservedNames", "ReservedRanges", "RequiredNumbers", "ExtensionRanges", "Messages", "Enums", "Extensions"},
+	reflect.TypeOf((*pref.FieldDescriptor)(nil)).Elem():     {"Number", "Cardinality", "Kind", "HasJSONName", "JSONName", "HasPresence", "IsExtension", "IsPacked", "IsWeak", "IsList", "IsMap", "MapKey", "MapValue", "HasDefault", "Default", "ContainingOneof", "ContainingMessage", "Message", "Enum"},
+	reflect.TypeOf((*pref.OneofDescriptor)(nil)).Elem():     {"Fields"}, // not directly used; must keep in sync with formatDescOpt
+	reflect.TypeOf((*pref.EnumDescriptor)(nil)).Elem():      {"Values", "ReservedNames", "ReservedRanges"},
+	reflect.TypeOf((*pref.EnumValueDescriptor)(nil)).Elem(): {"Number"},
+	reflect.TypeOf((*pref.ServiceDescriptor)(nil)).Elem():   {"Methods"},
+	reflect.TypeOf((*pref.MethodDescriptor)(nil)).Elem():    {"Input", "Output", "IsStreamingClient", "IsStreamingServer"},
+}
+
+func FormatDesc(s fmt.State, r rune, t pref.Descriptor) {
+	io.WriteString(s, formatDescOpt(t, true, r == 'v' && (s.Flag('+') || s.Flag('#'))))
+}
+func formatDescOpt(t pref.Descriptor, isRoot, allowMulti bool) string {
+	rv := reflect.ValueOf(t)
+	rt := rv.MethodByName("ProtoType").Type().In(0)
+
+	start, end := "{", "}"
+	if isRoot {
+		start = rt.Name() + "{"
+	}
+
+	_, isFile := t.(pref.FileDescriptor)
+	rs := records{allowMulti: allowMulti}
+	if t.IsPlaceholder() {
+		if isFile {
+			rs.Append(rv, "Path", "Package", "IsPlaceholder")
+		} else {
+			rs.Append(rv, "FullName", "IsPlaceholder")
+		}
+	} else {
+		switch {
+		case isFile:
+			rs.Append(rv, "Syntax")
+		case isRoot:
+			rs.Append(rv, "Syntax", "FullName")
+		default:
+			rs.Append(rv, "Name")
+		}
+		switch t := t.(type) {
+		case pref.FieldDescriptor:
+			for _, s := range descriptorAccessors[rt] {
+				switch s {
+				case "MapKey":
+					if k := t.MapKey(); k != nil {
+						rs.recs = append(rs.recs, [2]string{"MapKey", k.Kind().String()})
+					}
+				case "MapValue":
+					if v := t.MapValue(); v != nil {
+						switch v.Kind() {
+						case pref.EnumKind:
+							rs.recs = append(rs.recs, [2]string{"MapValue", string(v.Enum().FullName())})
+						case pref.MessageKind, pref.GroupKind:
+							rs.recs = append(rs.recs, [2]string{"MapValue", string(v.Message().FullName())})
+						default:
+							rs.recs = append(rs.recs, [2]string{"MapValue", v.Kind().String()})
+						}
+					}
+				case "ContainingOneof":
+					if od := t.ContainingOneof(); od != nil {
+						rs.recs = append(rs.recs, [2]string{"Oneof", string(od.Name())})
+					}
+				case "ContainingMessage":
+					if t.IsExtension() {
+						rs.recs = append(rs.recs, [2]string{"Extendee", string(t.ContainingMessage().FullName())})
+					}
+				case "Message":
+					if !t.IsMap() {
+						rs.Append(rv, s)
+					}
+				default:
+					rs.Append(rv, s)
+				}
+			}
+		case pref.OneofDescriptor:
+			var ss []string
+			fs := t.Fields()
+			for i := 0; i < fs.Len(); i++ {
+				ss = append(ss, string(fs.Get(i).Name()))
+			}
+			if len(ss) > 0 {
+				rs.recs = append(rs.recs, [2]string{"Fields", "[" + joinStrings(ss, false) + "]"})
+			}
+		default:
+			rs.Append(rv, descriptorAccessors[rt]...)
+		}
+		if rv.MethodByName("GoType").IsValid() {
+			rs.Append(rv, "GoType")
+		}
+	}
+	return start + rs.Join() + end
+}
+
+type records struct {
+	recs       [][2]string
+	allowMulti bool
+}
+
+func (rs *records) Append(v reflect.Value, accessors ...string) {
+	for _, a := range accessors {
+		var rv reflect.Value
+		if m := v.MethodByName(a); m.IsValid() {
+			rv = m.Call(nil)[0]
+		}
+		if v.Kind() == reflect.Struct && !rv.IsValid() {
+			rv = v.FieldByName(a)
+		}
+		if !rv.IsValid() {
+			panic(fmt.Sprintf("unknown accessor: %v.%s", v.Type(), a))
+		}
+		if _, ok := rv.Interface().(pref.Value); ok {
+			rv = rv.MethodByName("Interface").Call(nil)[0]
+			if !rv.IsNil() {
+				rv = rv.Elem()
+			}
+		}
+
+		// Ignore zero values.
+		var isZero bool
+		switch rv.Kind() {
+		case reflect.Interface, reflect.Slice:
+			isZero = rv.IsNil()
+		case reflect.Bool:
+			isZero = rv.Bool() == false
+		case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
+			isZero = rv.Int() == 0
+		case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64:
+			isZero = rv.Uint() == 0
+		case reflect.String:
+			isZero = rv.String() == ""
+		}
+		if n, ok := rv.Interface().(list); ok {
+			isZero = n.Len() == 0
+		}
+		if isZero {
+			continue
+		}
+
+		// Format the value.
+		var s string
+		v := rv.Interface()
+		switch v := v.(type) {
+		case list:
+			s = formatListOpt(v, false, rs.allowMulti)
+		case pref.FieldDescriptor, pref.OneofDescriptor, pref.EnumValueDescriptor, pref.MethodDescriptor:
+			s = string(v.(pref.Descriptor).Name())
+		case pref.Descriptor:
+			s = string(v.FullName())
+		case string:
+			s = strconv.Quote(v)
+		case []byte:
+			s = fmt.Sprintf("%q", v)
+		default:
+			s = fmt.Sprint(v)
+		}
+		rs.recs = append(rs.recs, [2]string{a, s})
+	}
+}
+
+func (rs *records) Join() string {
+	var ss []string
+
+	// In single line mode, simply join all records with commas.
+	if !rs.allowMulti {
+		for _, r := range rs.recs {
+			ss = append(ss, r[0]+formatColon(0)+r[1])
+		}
+		return joinStrings(ss, false)
+	}
+
+	// In allowMulti line mode, align single line records for more readable output.
+	var maxLen int
+	flush := func(i int) {
+		for _, r := range rs.recs[len(ss):i] {
+			ss = append(ss, r[0]+formatColon(maxLen-len(r[0]))+r[1])
+		}
+		maxLen = 0
+	}
+	for i, r := range rs.recs {
+		if isMulti := strings.Contains(r[1], "\n"); isMulti {
+			flush(i)
+			ss = append(ss, r[0]+formatColon(0)+strings.Join(strings.Split(r[1], "\n"), "\n\t"))
+		} else if maxLen < len(r[0]) {
+			maxLen = len(r[0])
+		}
+	}
+	flush(len(rs.recs))
+	return joinStrings(ss, true)
+}
+
+func formatColon(padding int) string {
+	// Deliberately introduce instability into the debug output to
+	// discourage users from performing string comparisons.
+	// This provides us flexibility to change the output in the future.
+	if detrand.Bool() {
+		return ":" + strings.Repeat(" ", 1+padding) // use non-breaking spaces (U+00a0)
+	} else {
+		return ":" + strings.Repeat(" ", 1+padding) // use regular spaces (U+0020)
+	}
+}
+
+func joinStrings(ss []string, isMulti bool) string {
+	if len(ss) == 0 {
+		return ""
+	}
+	if isMulti {
+		return "\n\t" + strings.Join(ss, "\n\t") + "\n"
+	}
+	return strings.Join(ss, ", ")
+}

vendor/google.golang.org/protobuf/internal/descopts/options.go

@@ -0,0 +1,29 @@
+// Copyright 2019 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// Package descopts contains the nil pointers to concrete descriptor options.
+//
+// This package exists as a form of reverse dependency injection so that certain
+// packages (e.g., internal/filedesc and internal/filetype can avoid a direct
+// dependency on the descriptor proto package).
+package descopts
+
+import pref "google.golang.org/protobuf/reflect/protoreflect"
+
+// These variables are set by the init function in descriptor.pb.go via logic
+// in internal/filetype. In other words, so long as the descriptor proto package
+// is linked in, these variables will be populated.
+//
+// Each variable is populated with a nil pointer to the options struct.
+var (
+	File           pref.ProtoMessage
+	Enum           pref.ProtoMessage
+	EnumValue      pref.ProtoMessage
+	Message        pref.ProtoMessage
+	Field          pref.ProtoMessage
+	Oneof          pref.ProtoMessage
+	ExtensionRange pref.ProtoMessage
+	Service        pref.ProtoMessage
+	Method         pref.ProtoMessage
+)

vendor/google.golang.org/protobuf/internal/detrand/rand.go

@@ -0,0 +1,61 @@
+// Copyright 2018 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// Package detrand provides deterministically random functionality.
+//
+// The pseudo-randomness of these functions is seeded by the program binary
+// itself and guarantees that the output does not change within a program,
+// while ensuring that the output is unstable across different builds.
+package detrand
+
+import (
+	"encoding/binary"
+	"hash/fnv"
+	"os"
+)
+
+// Disable disables detrand such that all functions returns the zero value.
+// This function is not concurrent-safe and must be called during program init.
+func Disable() {
+	randSeed = 0
+}
+
+// Bool returns a deterministically random boolean.
+func Bool() bool {
+	return randSeed%2 == 1
+}
+
+// randSeed is a best-effort at an approximate hash of the Go binary.
+var randSeed = binaryHash()
+
+func binaryHash() uint64 {
+	// Open the Go binary.
+	s, err := os.Executable()
+	if err != nil {
+		return 0
+	}
+	f, err := os.Open(s)
+	if err != nil {
+		return 0
+	}
+	defer f.Close()
+
+	// Hash the size and several samples of the Go binary.
+	const numSamples = 8
+	var buf [64]byte
+	h := fnv.New64()
+	fi, err := f.Stat()
+	if err != nil {
+		return 0
+	}
+	binary.LittleEndian.PutUint64(buf[:8], uint64(fi.Size()))
+	h.Write(buf[:8])
+	for i := int64(0); i < numSamples; i++ {
+		if _, err := f.ReadAt(buf[:], i*fi.Size()/numSamples); err != nil {
+			return 0
+		}
+		h.Write(buf[:])
+	}
+	return h.Sum64()
+}

vendor/google.golang.org/protobuf/internal/encoding/defval/default.go

@@ -0,0 +1,213 @@
+// Copyright 2018 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// Package defval marshals and unmarshals textual forms of default values.
+//
+// This package handles both the form historically used in Go struct field tags
+// and also the form used by google.protobuf.FieldDescriptorProto.default_value
+// since they differ in superficial ways.
+package defval
+
+import (
+	"fmt"
+	"math"
+	"strconv"
+
+	ptext "google.golang.org/protobuf/internal/encoding/text"
+	errors "google.golang.org/protobuf/internal/errors"
+	pref "google.golang.org/protobuf/reflect/protoreflect"
+)
+
+// Format is the serialization format used to represent the default value.
+type Format int
+
+const (
+	_ Format = iota
+
+	// Descriptor uses the serialization format that protoc uses with the
+	// google.protobuf.FieldDescriptorProto.default_value field.
+	Descriptor
+
+	// GoTag uses the historical serialization format in Go struct field tags.
+	GoTag
+)
+
+// Unmarshal deserializes the default string s according to the given kind k.
+// When k is an enum, a list of enum value descriptors must be provided.
+func Unmarshal(s string, k pref.Kind, evs pref.EnumValueDescriptors, f Format) (pref.Value, pref.EnumValueDescriptor, error) {
+	switch k {
+	case pref.BoolKind:
+		if f == GoTag {
+			switch s {
+			case "1":
+				return pref.ValueOfBool(true), nil, nil
+			case "0":
+				return pref.ValueOfBool(false), nil, nil
+			}
+		} else {
+			switch s {
+			case "true":
+				return pref.ValueOfBool(true), nil, nil
+			case "false":
+				return pref.ValueOfBool(false), nil, nil
+			}
+		}
+	case pref.EnumKind:
+		if f == GoTag {
+			// Go tags use the numeric form of the enum value.
+			if n, err := strconv.ParseInt(s, 10, 32); err == nil {
+				if ev := evs.ByNumber(pref.EnumNumber(n)); ev != nil {
+					return pref.ValueOfEnum(ev.Number()), ev, nil
+				}
+			}
+		} else {
+			// Descriptor default_value use the enum identifier.
+			ev := evs.ByName(pref.Name(s))
+			if ev != nil {
+				return pref.ValueOfEnum(ev.Number()), ev, nil
+			}
+		}
+	case pref.Int32Kind, pref.Sint32Kind, pref.Sfixed32Kind:
+		if v, err := strconv.ParseInt(s, 10, 32); err == nil {
+			return pref.ValueOfInt32(int32(v)), nil, nil
+		}
+	case pref.Int64Kind, pref.Sint64Kind, pref.Sfixed64Kind:
+		if v, err := strconv.ParseInt(s, 10, 64); err == nil {
+			return pref.ValueOfInt64(int64(v)), nil, nil
+		}
+	case pref.Uint32Kind, pref.Fixed32Kind:
+		if v, err := strconv.ParseUint(s, 10, 32); err == nil {
+			return pref.ValueOfUint32(uint32(v)), nil, nil
+		}
+	case pref.Uint64Kind, pref.Fixed64Kind:
+		if v, err := strconv.ParseUint(s, 10, 64); err == nil {
+			return pref.ValueOfUint64(uint64(v)), nil, nil
+		}
+	case pref.FloatKind, pref.DoubleKind:
+		var v float64
+		var err error
+		switch s {
+		case "-inf":
+			v = math.Inf(-1)
+		case "inf":
+			v = math.Inf(+1)
+		case "nan":
+			v = math.NaN()
+		default:
+			v, err = strconv.ParseFloat(s, 64)
+		}
+		if err == nil {
+			if k == pref.FloatKind {
+				return pref.ValueOfFloat32(float32(v)), nil, nil
+			} else {
+				return pref.ValueOfFloat64(float64(v)), nil, nil
+			}
+		}
+	case pref.StringKind:
+		// String values are already unescaped and can be used as is.
+		return pref.ValueOfString(s), nil, nil
+	case pref.BytesKind:
+		if b, ok := unmarshalBytes(s); ok {
+			return pref.ValueOfBytes(b), nil, nil
+		}
+	}
+	return pref.Value{}, nil, errors.New("could not parse value for %v: %q", k, s)
+}
+
+// Marshal serializes v as the default string according to the given kind k.
+// When specifying the Descriptor format for an enum kind, the associated
+// enum value descriptor must be provided.
+func Marshal(v pref.Value, ev pref.EnumValueDescriptor, k pref.Kind, f Format) (string, error) {
+	switch k {
+	case pref.BoolKind:
+		if f == GoTag {
+			if v.Bool() {
+				return "1", nil
+			} else {
+				return "0", nil
+			}
+		} else {
+			if v.Bool() {
+				return "true", nil
+			} else {
+				return "false", nil
+			}
+		}
+	case pref.EnumKind:
+		if f == GoTag {
+			return strconv.FormatInt(int64(v.Enum()), 10), nil
+		} else {
+			return string(ev.Name()), nil
+		}
+	case pref.Int32Kind, pref.Sint32Kind, pref.Sfixed32Kind, pref.Int64Kind, pref.Sint64Kind, pref.Sfixed64Kind:
+		return strconv.FormatInt(v.Int(), 10), nil
+	case pref.Uint32Kind, pref.Fixed32Kind, pref.Uint64Kind, pref.Fixed64Kind:
+		return strconv.FormatUint(v.Uint(), 10), nil
+	case pref.FloatKind, pref.DoubleKind:
+		f := v.Float()
+		switch {
+		case math.IsInf(f, -1):
+			return "-inf", nil
+		case math.IsInf(f, +1):
+			return "inf", nil
+		case math.IsNaN(f):
+			return "nan", nil
+		default:
+			if k == pref.FloatKind {
+				return strconv.FormatFloat(f, 'g', -1, 32), nil
+			} else {
+				return strconv.FormatFloat(f, 'g', -1, 64), nil
+			}
+		}
+	case pref.StringKind:
+		// String values are serialized as is without any escaping.
+		return v.String(), nil
+	case pref.BytesKind:
+		if s, ok := marshalBytes(v.Bytes()); ok {
+			return s, nil
+		}
+	}
+	return "", errors.New("could not format value for %v: %v", k, v)
+}
+
+// unmarshalBytes deserializes bytes by applying C unescaping.
+func unmarshalBytes(s string) ([]byte, bool) {
+	// Bytes values use the same escaping as the text format,
+	// however they lack the surrounding double quotes.
+	v, err := ptext.UnmarshalString(`"` + s + `"`)
+	if err != nil {
+		return nil, false
+	}
+	return []byte(v), true
+}
+
+// marshalBytes serializes bytes by using C escaping.
+// To match the exact output of protoc, this is identical to the
+// CEscape function in strutil.cc of the protoc source code.
+func marshalBytes(b []byte) (string, bool) {
+	var s []byte
+	for _, c := range b {
+		switch c {
+		case '\n':
+			s = append(s, `\n`...)
+		case '\r':
+			s = append(s, `\r`...)
+		case '\t':
+			s = append(s, `\t`...)
+		case '"':
+			s = append(s, `\"`...)
+		case '\'':
+			s = append(s, `\'`...)
+		case '\\':
+			s = append(s, `\\`...)
+		default:
+			if printableASCII := c >= 0x20 && c <= 0x7e; printableASCII {
+				s = append(s, c)
+			} else {
+				s = append(s, fmt.Sprintf(`\%03o`, c)...)
+			}
+		}
+	}
+	return string(s), true
+}

vendor/google.golang.org/protobuf/internal/encoding/messageset/messageset.go

@@ -0,0 +1,258 @@
+// Copyright 2019 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// Package messageset encodes and decodes the obsolete MessageSet wire format.
+package messageset
+
+import (
+	"math"
+
+	"google.golang.org/protobuf/encoding/protowire"
+	"google.golang.org/protobuf/internal/errors"
+	pref "google.golang.org/protobuf/reflect/protoreflect"
+	preg "google.golang.org/protobuf/reflect/protoregistry"
+)
+
+// The MessageSet wire format is equivalent to a message defiend as follows,
+// where each Item defines an extension field with a field number of 'type_id'
+// and content of 'message'. MessageSet extensions must be non-repeated message
+// fields.
+//
+//	message MessageSet {
+//		repeated group Item = 1 {
+//			required int32 type_id = 2;
+//			required string message = 3;
+//		}
+//	}
+const (
+	FieldItem    = protowire.Number(1)
+	FieldTypeID  = protowire.Number(2)
+	FieldMessage = protowire.Number(3)
+)
+
+// ExtensionName is the field name for extensions of MessageSet.
+//
+// A valid MessageSet extension must be of the form:
+//	message MyMessage {
+//		extend proto2.bridge.MessageSet {
+//			optional MyMessage message_set_extension = 1234;
+//		}
+//		...
+//	}
+const ExtensionName = "message_set_extension"
+
+// IsMessageSet returns whether the message uses the MessageSet wire format.
+func IsMessageSet(md pref.MessageDescriptor) bool {
+	xmd, ok := md.(interface{ IsMessageSet() bool })
+	return ok && xmd.IsMessageSet()
+}
+
+// IsMessageSetExtension reports this field extends a MessageSet.
+func IsMessageSetExtension(fd pref.FieldDescriptor) bool {
+	if fd.Name() != ExtensionName {
+		return false
+	}
+	if fd.FullName().Parent() != fd.Message().FullName() {
+		return false
+	}
+	return IsMessageSet(fd.ContainingMessage())
+}
+
+// FindMessageSetExtension locates a MessageSet extension field by name.
+// In text and JSON formats, the extension name used is the message itself.
+// The extension field name is derived by appending ExtensionName.
+func FindMessageSetExtension(r preg.ExtensionTypeResolver, s pref.FullName) (pref.ExtensionType, error) {
+	name := s.Append(ExtensionName)
+	xt, err := r.FindExtensionByName(name)
+	if err != nil {
+		if err == preg.NotFound {
+			return nil, err
+		}
+		return nil, errors.Wrap(err, "%q", name)
+	}
+	if !IsMessageSetExtension(xt.TypeDescriptor()) {
+		return nil, preg.NotFound
+	}
+	return xt, nil
+}
+
+// SizeField returns the size of a MessageSet item field containing an extension
+// with the given field number, not counting the contents of the message subfield.
+func SizeField(num protowire.Number) int {
+	return 2*protowire.SizeTag(FieldItem) + protowire.SizeTag(FieldTypeID) + protowire.SizeVarint(uint64(num))
+}
+
+// Unmarshal parses a MessageSet.
+//
+// It calls fn with the type ID and value of each item in the MessageSet.
+// Unknown fields are discarded.
+//
+// If wantLen is true, the item values include the varint length prefix.
+// This is ugly, but simplifies the fast-path decoder in internal/impl.
+func Unmarshal(b []byte, wantLen bool, fn func(typeID protowire.Number, value []byte) error) error {
+	for len(b) > 0 {
+		num, wtyp, n := protowire.ConsumeTag(b)
+		if n < 0 {
+			return protowire.ParseError(n)
+		}
+		b = b[n:]
+		if num != FieldItem || wtyp != protowire.StartGroupType {
+			n := protowire.ConsumeFieldValue(num, wtyp, b)
+			if n < 0 {
+				return protowire.ParseError(n)
+			}
+			b = b[n:]
+			continue
+		}
+		typeID, value, n, err := ConsumeFieldValue(b, wantLen)
+		if err != nil {
+			return err
+		}
+		b = b[n:]
+		if typeID == 0 {
+			continue
+		}
+		if err := fn(typeID, value); err != nil {
+			return err
+		}
+	}
+	return nil
+}
+
+// ConsumeFieldValue parses b as a MessageSet item field value until and including
+// the trailing end group marker. It assumes the start group tag has already been parsed.
+// It returns the contents of the type_id and message subfields and the total
+// item length.
+//
+// If wantLen is true, the returned message value includes the length prefix.
+func ConsumeFieldValue(b []byte, wantLen bool) (typeid protowire.Number, message []byte, n int, err error) {
+	ilen := len(b)
+	for {
+		num, wtyp, n := protowire.ConsumeTag(b)
+		if n < 0 {
+			return 0, nil, 0, protowire.ParseError(n)
+		}
+		b = b[n:]
+		switch {
+		case num == FieldItem && wtyp == protowire.EndGroupType:
+			if wantLen && len(message) == 0 {
+				// The message field was missing, which should never happen.
+				// Be prepared for this case anyway.
+				message = protowire.AppendVarint(message, 0)
+			}
+			return typeid, message, ilen - len(b), nil
+		case num == FieldTypeID && wtyp == protowire.VarintType:
+			v, n := protowire.ConsumeVarint(b)
+			if n < 0 {
+				return 0, nil, 0, protowire.ParseError(n)
+			}
+			b = b[n:]
+			if v < 1 || v > math.MaxInt32 {
+				return 0, nil, 0, errors.New("invalid type_id in message set")
+			}
+			typeid = protowire.Number(v)
+		case num == FieldMessage && wtyp == protowire.BytesType:
+			m, n := protowire.ConsumeBytes(b)
+			if n < 0 {
+				return 0, nil, 0, protowire.ParseError(n)
+			}
+			if message == nil {
+				if wantLen {
+					message = b[:n:n]
+				} else {
+					message = m[:len(m):len(m)]
+				}
+			} else {
+				// This case should never happen in practice, but handle it for
+				// correctness: The MessageSet item contains multiple message
+				// fields, which need to be merged.
+				//
+				// In the case where we're returning the length, this becomes
+				// quite inefficient since we need to strip the length off
+				// the existing data and reconstruct it with the combined length.
+				if wantLen {
+					_, nn := protowire.ConsumeVarint(message)
+					m0 := message[nn:]
+					message = nil
+					message = protowire.AppendVarint(message, uint64(len(m0)+len(m)))
+					message = append(message, m0...)
+					message = append(message, m...)
+				} else {
+					message = append(message, m...)
+				}
+			}
+			b = b[n:]
+		default:
+			// We have no place to put it, so we just ignore unknown fields.
+			n := protowire.ConsumeFieldValue(num, wtyp, b)
+			if n < 0 {
+				return 0, nil, 0, protowire.ParseError(n)
+			}
+			b = b[n:]
+		}
+	}
+}
+
+// AppendFieldStart appends the start of a MessageSet item field containing
+// an extension with the given number. The caller must add the message
+// subfield (including the tag).
+func AppendFieldStart(b []byte, num protowire.Number) []byte {
+	b = protowire.AppendTag(b, FieldItem, protowire.StartGroupType)
+	b = protowire.AppendTag(b, FieldTypeID, protowire.VarintType)
+	b = protowire.AppendVarint(b, uint64(num))
+	return b
+}
+
+// AppendFieldEnd appends the trailing end group marker for a MessageSet item field.
+func AppendFieldEnd(b []byte) []byte {
+	return protowire.AppendTag(b, FieldItem, protowire.EndGroupType)
+}
+
+// SizeUnknown returns the size of an unknown fields section in MessageSet format.
+//
+// See AppendUnknown.
+func SizeUnknown(unknown []byte) (size int) {
+	for len(unknown) > 0 {
+		num, typ, n := protowire.ConsumeTag(unknown)
+		if n < 0 || typ != protowire.BytesType {
+			return 0
+		}
+		unknown = unknown[n:]
+		_, n = protowire.ConsumeBytes(unknown)
+		if n < 0 {
+			return 0
+		}
+		unknown = unknown[n:]
+		size += SizeField(num) + protowire.SizeTag(FieldMessage) + n
+	}
+	return size
+}
+
+// AppendUnknown appends unknown fields to b in MessageSet format.
+//
+// For historic reasons, unresolved items in a MessageSet are stored in a
+// message's unknown fields section in non-MessageSet format. That is, an
+// unknown item with typeID T and value V appears in the unknown fields as
+// a field with number T and value V.
+//
+// This function converts the unknown fields back into MessageSet form.
+func AppendUnknown(b, unknown []byte) ([]byte, error) {
+	for len(unknown) > 0 {
+		num, typ, n := protowire.ConsumeTag(unknown)
+		if n < 0 || typ != protowire.BytesType {
+			return nil, errors.New("invalid data in message set unknown fields")
+		}
+		unknown = unknown[n:]
+		_, n = protowire.ConsumeBytes(unknown)
+		if n < 0 {
+			return nil, errors.New("invalid data in message set unknown fields")
+		}
+		b = AppendFieldStart(b, num)
+		b = protowire.AppendTag(b, FieldMessage, protowire.BytesType)
+		b = append(b, unknown[:n]...)
+		b = AppendFieldEnd(b)
+		unknown = unknown[n:]
+	}
+	return b, nil
+}

vendor/google.golang.org/protobuf/internal/encoding/tag/tag.go

@@ -0,0 +1,207 @@
+// Copyright 2018 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// Package tag marshals and unmarshals the legacy struct tags as generated
+// by historical versions of protoc-gen-go.
+package tag
+
+import (
+	"reflect"
+	"strconv"
+	"strings"
+
+	defval "google.golang.org/protobuf/internal/encoding/defval"
+	fdesc "google.golang.org/protobuf/internal/filedesc"
+	"google.golang.org/protobuf/internal/strs"
+	pref "google.golang.org/protobuf/reflect/protoreflect"
+)
+
+var byteType = reflect.TypeOf(byte(0))
+
+// Unmarshal decodes the tag into a prototype.Field.
+//
+// The goType is needed to determine the original protoreflect.Kind since the
+// tag does not record sufficient information to determine that.
+// The type is the underlying field type (e.g., a repeated field may be
+// represented by []T, but the Go type passed in is just T).
+// A list of enum value descriptors must be provided for enum fields.
+// This does not populate the Enum or Message (except for weak message).
+//
+// This function is a best effort attempt; parsing errors are ignored.
+func Unmarshal(tag string, goType reflect.Type, evs pref.EnumValueDescriptors) pref.FieldDescriptor {
+	f := new(fdesc.Field)
+	f.L0.ParentFile = fdesc.SurrogateProto2
+	for len(tag) > 0 {
+		i := strings.IndexByte(tag, ',')
+		if i < 0 {
+			i = len(tag)
+		}
+		switch s := tag[:i]; {
+		case strings.HasPrefix(s, "name="):
+			f.L0.FullName = pref.FullName(s[len("name="):])
+		case strings.Trim(s, "0123456789") == "":
+			n, _ := strconv.ParseUint(s, 10, 32)
+			f.L1.Number = pref.FieldNumber(n)
+		case s == "opt":
+			f.L1.Cardinality = pref.Optional
+		case s == "req":
+			f.L1.Cardinality = pref.Required
+		case s == "rep":
+			f.L1.Cardinality = pref.Repeated
+		case s == "varint":
+			switch goType.Kind() {
+			case reflect.Bool:
+				f.L1.Kind = pref.BoolKind
+			case reflect.Int32:
+				f.L1.Kind = pref.Int32Kind
+			case reflect.Int64:
+				f.L1.Kind = pref.Int64Kind
+			case reflect.Uint32:
+				f.L1.Kind = pref.Uint32Kind
+			case reflect.Uint64:
+				f.L1.Kind = pref.Uint64Kind
+			}
+		case s == "zigzag32":
+			if goType.Kind() == reflect.Int32 {
+				f.L1.Kind = pref.Sint32Kind
+			}
+		case s == "zigzag64":
+			if goType.Kind() == reflect.Int64 {
+				f.L1.Kind = pref.Sint64Kind
+			}
+		case s == "fixed32":
+			switch goType.Kind() {
+			case reflect.Int32:
+				f.L1.Kind = pref.Sfixed32Kind
+			case reflect.Uint32:
+				f.L1.Kind = pref.Fixed32Kind
+			case reflect.Float32:
+				f.L1.Kind = pref.FloatKind
+			}
+		case s == "fixed64":
+			switch goType.Kind() {
+			case reflect.Int64:
+				f.L1.Kind = pref.Sfixed64Kind
+			case reflect.Uint64:
+				f.L1.Kind = pref.Fixed64Kind
+			case reflect.Float64:
+				f.L1.Kind = pref.DoubleKind
+			}
+		case s == "bytes":
+			switch {
+			case goType.Kind() == reflect.String:
+				f.L1.Kind = pref.StringKind
+			case goType.Kind() == reflect.Slice && goType.Elem() == byteType:
+				f.L1.Kind = pref.BytesKind
+			default:
+				f.L1.Kind = pref.MessageKind
+			}
+		case s == "group":
+			f.L1.Kind = pref.GroupKind
+		case strings.HasPrefix(s, "enum="):
+			f.L1.Kind = pref.EnumKind
+		case strings.HasPrefix(s, "json="):
+			jsonName := s[len("json="):]
+			if jsonName != strs.JSONCamelCase(string(f.L0.FullName.Name())) {
+				f.L1.JSONName.Init(jsonName)
+			}
+		case s == "packed":
+			f.L1.HasPacked = true
+			f.L1.IsPacked = true
+		case strings.HasPrefix(s, "weak="):
+			f.L1.IsWeak = true
+			f.L1.Message = fdesc.PlaceholderMessage(pref.FullName(s[len("weak="):]))
+		case strings.HasPrefix(s, "def="):
+			// The default tag is special in that everything afterwards is the
+			// default regardless of the presence of commas.
+			s, i = tag[len("def="):], len(tag)
+			v, ev, _ := defval.Unmarshal(s, f.L1.Kind, evs, defval.GoTag)
+			f.L1.Default = fdesc.DefaultValue(v, ev)
+		case s == "proto3":
+			f.L0.ParentFile = fdesc.SurrogateProto3
+		}
+		tag = strings.TrimPrefix(tag[i:], ",")
+	}
+
+	// The generator uses the group message name instead of the field name.
+	// We obtain the real field name by lowercasing the group name.
+	if f.L1.Kind == pref.GroupKind {
+		f.L0.FullName = pref.FullName(strings.ToLower(string(f.L0.FullName)))
+	}
+	return f
+}
+
+// Marshal encodes the protoreflect.FieldDescriptor as a tag.
+//
+// The enumName must be provided if the kind is an enum.
+// Historically, the formulation of the enum "name" was the proto package
+// dot-concatenated with the generated Go identifier for the enum type.
+// Depending on the context on how Marshal is called, there are different ways
+// through which that information is determined. As such it is the caller's
+// responsibility to provide a function to obtain that information.
+func Marshal(fd pref.FieldDescriptor, enumName string) string {
+	var tag []string
+	switch fd.Kind() {
+	case pref.BoolKind, pref.EnumKind, pref.Int32Kind, pref.Uint32Kind, pref.Int64Kind, pref.Uint64Kind:
+		tag = append(tag, "varint")
+	case pref.Sint32Kind:
+		tag = append(tag, "zigzag32")
+	case pref.Sint64Kind:
+		tag = append(tag, "zigzag64")
+	case pref.Sfixed32Kind, pref.Fixed32Kind, pref.FloatKind:
+		tag = append(tag, "fixed32")
+	case pref.Sfixed64Kind, pref.Fixed64Kind, pref.DoubleKind:
+		tag = append(tag, "fixed64")
+	case pref.StringKind, pref.BytesKind, pref.MessageKind:
+		tag = append(tag, "bytes")
+	case pref.GroupKind:
+		tag = append(tag, "group")
+	}
+	tag = append(tag, strconv.Itoa(int(fd.Number())))
+	switch fd.Cardinality() {
+	case pref.Optional:
+		tag = append(tag, "opt")
+	case pref.Required:
+		tag = append(tag, "req")
+	case pref.Repeated:
+		tag = append(tag, "rep")
+	}
+	if fd.IsPacked() {
+		tag = append(tag, "packed")
+	}
+	name := string(fd.Name())
+	if fd.Kind() == pref.GroupKind {
+		// The name of the FieldDescriptor for a group field is
+		// lowercased. To find the original capitalization, we
+		// look in the field's MessageType.
+		name = string(fd.Message().Name())
+	}
+	tag = append(tag, "name="+name)
+	if jsonName := fd.JSONName(); jsonName != "" && jsonName != name && !fd.IsExtension() {
+		// NOTE: The jsonName != name condition is suspect, but it preserve
+		// the exact same semantics from the previous generator.
+		tag = append(tag, "json="+jsonName)
+	}
+	if fd.IsWeak() {
+		tag = append(tag, "weak="+string(fd.Message().FullName()))
+	}
+	// The previous implementation does not tag extension fields as proto3,
+	// even when the field is defined in a proto3 file. Match that behavior
+	// for consistency.
+	if fd.Syntax() == pref.Proto3 && !fd.IsExtension() {
+		tag = append(tag, "proto3")
+	}
+	if fd.Kind() == pref.EnumKind && enumName != "" {
+		tag = append(tag, "enum="+enumName)
+	}
+	if fd.ContainingOneof() != nil {
+		tag = append(tag, "oneof")
+	}
+	// This must appear last in the tag, since commas in strings aren't escaped.
+	if fd.HasDefault() {
+		def, _ := defval.Marshal(fd.Default(), fd.DefaultEnumValue(), fd.Kind(), defval.GoTag)
+		tag = append(tag, "def="+def)
+	}
+	return strings.Join(tag, ",")
+}

vendor/google.golang.org/protobuf/internal/encoding/text/decode.go

@@ -0,0 +1,665 @@
+// Copyright 2018 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package text
+
+import (
+	"bytes"
+	"fmt"
+	"io"
+	"regexp"
+	"strconv"
+	"unicode/utf8"
+
+	"google.golang.org/protobuf/internal/errors"
+)
+
+// Decoder is a token-based textproto decoder.
+type Decoder struct {
+	// lastCall is last method called, either readCall or peekCall.
+	// Initial value is readCall.
+	lastCall call
+
+	// lastToken contains the last read token.
+	lastToken Token
+
+	// lastErr contains the last read error.
+	lastErr error
+
+	// openStack is a stack containing the byte characters for MessageOpen and
+	// ListOpen kinds. The top of stack represents the message or the list that
+	// the current token is nested in. An empty stack means the current token is
+	// at the top level message. The characters '{' and '<' both represent the
+	// MessageOpen kind.
+	openStack []byte
+
+	// orig is used in reporting line and column.
+	orig []byte
+	// in contains the unconsumed input.
+	in []byte
+}
+
+// NewDecoder returns a Decoder to read the given []byte.
+func NewDecoder(b []byte) *Decoder {
+	return &Decoder{orig: b, in: b}
+}
+
+// ErrUnexpectedEOF means that EOF was encountered in the middle of the input.
+var ErrUnexpectedEOF = errors.New("%v", io.ErrUnexpectedEOF)
+
+// call specifies which Decoder method was invoked.
+type call uint8
+
+const (
+	readCall call = iota
+	peekCall
+)
+
+// Peek looks ahead and returns the next token and error without advancing a read.
+func (d *Decoder) Peek() (Token, error) {
+	defer func() { d.lastCall = peekCall }()
+	if d.lastCall == readCall {
+		d.lastToken, d.lastErr = d.Read()
+	}
+	return d.lastToken, d.lastErr
+}
+
+// Read returns the next token.
+// It will return an error if there is no valid token.
+func (d *Decoder) Read() (Token, error) {
+	defer func() { d.lastCall = readCall }()
+	if d.lastCall == peekCall {
+		return d.lastToken, d.lastErr
+	}
+
+	tok, err := d.parseNext(d.lastToken.kind)
+	if err != nil {
+		return Token{}, err
+	}
+
+	switch tok.kind {
+	case comma, semicolon:
+		tok, err = d.parseNext(tok.kind)
+		if err != nil {
+			return Token{}, err
+		}
+	}
+	d.lastToken = tok
+	return tok, nil
+}
+
+const (
+	mismatchedFmt = "mismatched close character %q"
+	unexpectedFmt = "unexpected character %q"
+)
+
+// parseNext parses the next Token based on given last kind.
+func (d *Decoder) parseNext(lastKind Kind) (Token, error) {
+	// Trim leading spaces.
+	d.consume(0)
+	isEOF := false
+	if len(d.in) == 0 {
+		isEOF = true
+	}
+
+	switch lastKind {
+	case EOF:
+		return d.consumeToken(EOF, 0, 0), nil
+
+	case bof:
+		// Start of top level message. Next token can be EOF or Name.
+		if isEOF {
+			return d.consumeToken(EOF, 0, 0), nil
+		}
+		return d.parseFieldName()
+
+	case Name:
+		// Next token can be MessageOpen, ListOpen or Scalar.
+		if isEOF {
+			return Token{}, ErrUnexpectedEOF
+		}
+		switch ch := d.in[0]; ch {
+		case '{', '<':
+			d.pushOpenStack(ch)
+			return d.consumeToken(MessageOpen, 1, 0), nil
+		case '[':
+			d.pushOpenStack(ch)
+			return d.consumeToken(ListOpen, 1, 0), nil
+		default:
+			return d.parseScalar()
+		}
+
+	case Scalar:
+		openKind, closeCh := d.currentOpenKind()
+		switch openKind {
+		case bof:
+			// Top level message.
+			// 	Next token can be EOF, comma, semicolon or Name.
+			if isEOF {
+				return d.consumeToken(EOF, 0, 0), nil
+			}
+			switch d.in[0] {
+			case ',':
+				return d.consumeToken(comma, 1, 0), nil
+			case ';':
+				return d.consumeToken(semicolon, 1, 0), nil
+			default:
+				return d.parseFieldName()
+			}
+
+		case MessageOpen:
+			// Next token can be MessageClose, comma, semicolon or Name.
+			if isEOF {
+				return Token{}, ErrUnexpectedEOF
+			}
+			switch ch := d.in[0]; ch {
+			case closeCh:
+				d.popOpenStack()
+				return d.consumeToken(MessageClose, 1, 0), nil
+			case otherCloseChar[closeCh]:
+				return Token{}, d.newSyntaxError(mismatchedFmt, ch)
+			case ',':
+				return d.consumeToken(comma, 1, 0), nil
+			case ';':
+				return d.consumeToken(semicolon, 1, 0), nil
+			default:
+				return d.parseFieldName()
+			}
+
+		case ListOpen:
+			// Next token can be ListClose or comma.
+			if isEOF {
+				return Token{}, ErrUnexpectedEOF
+			}
+			switch ch := d.in[0]; ch {
+			case ']':
+				d.popOpenStack()
+				return d.consumeToken(ListClose, 1, 0), nil
+			case ',':
+				return d.consumeToken(comma, 1, 0), nil
+			default:
+				return Token{}, d.newSyntaxError(unexpectedFmt, ch)
+			}
+		}
+
+	case MessageOpen:
+		// Next token can be MessageClose or Name.
+		if isEOF {
+			return Token{}, ErrUnexpectedEOF
+		}
+		_, closeCh := d.currentOpenKind()
+		switch ch := d.in[0]; ch {
+		case closeCh:
+			d.popOpenStack()
+			return d.consumeToken(MessageClose, 1, 0), nil
+		case otherCloseChar[closeCh]:
+			return Token{}, d.newSyntaxError(mismatchedFmt, ch)
+		default:
+			return d.parseFieldName()
+		}
+
+	case MessageClose:
+		openKind, closeCh := d.currentOpenKind()
+		switch openKind {
+		case bof:
+			// Top level message.
+			// Next token can be EOF, comma, semicolon or Name.
+			if isEOF {
+				return d.consumeToken(EOF, 0, 0), nil
+			}
+			switch ch := d.in[0]; ch {
+			case ',':
+				return d.consumeToken(comma, 1, 0), nil
+			case ';':
+				return d.consumeToken(semicolon, 1, 0), nil
+			default:
+				return d.parseFieldName()
+			}
+
+		case MessageOpen:
+			// Next token can be MessageClose, comma, semicolon or Name.
+			if isEOF {
+				return Token{}, ErrUnexpectedEOF
+			}
+			switch ch := d.in[0]; ch {
+			case closeCh:
+				d.popOpenStack()
+				return d.consumeToken(MessageClose, 1, 0), nil
+			case otherCloseChar[closeCh]:
+				return Token{}, d.newSyntaxError(mismatchedFmt, ch)
+			case ',':
+				return d.consumeToken(comma, 1, 0), nil
+			case ';':
+				return d.consumeToken(semicolon, 1, 0), nil
+			default:
+				return d.parseFieldName()
+			}
+
+		case ListOpen:
+			// Next token can be ListClose or comma
+			if isEOF {
+				return Token{}, ErrUnexpectedEOF
+			}
+			switch ch := d.in[0]; ch {
+			case closeCh:
+				d.popOpenStack()
+				return d.consumeToken(ListClose, 1, 0), nil
+			case ',':
+				return d.consumeToken(comma, 1, 0), nil
+			default:
+				return Token{}, d.newSyntaxError(unexpectedFmt, ch)
+			}
+		}
+
+	case ListOpen:
+		// Next token can be ListClose, MessageStart or Scalar.
+		if isEOF {
+			return Token{}, ErrUnexpectedEOF
+		}
+		switch ch := d.in[0]; ch {
+		case ']':
+			d.popOpenStack()
+			return d.consumeToken(ListClose, 1, 0), nil
+		case '{', '<':
+			d.pushOpenStack(ch)
+			return d.consumeToken(MessageOpen, 1, 0), nil
+		default:
+			return d.parseScalar()
+		}
+
+	case ListClose:
+		openKind, closeCh := d.currentOpenKind()
+		switch openKind {
+		case bof:
+			// Top level message.
+			// Next token can be EOF, comma, semicolon or Name.
+			if isEOF {
+				return d.consumeToken(EOF, 0, 0), nil
+			}
+			switch ch := d.in[0]; ch {
+			case ',':
+				return d.consumeToken(comma, 1, 0), nil
+			case ';':
+				return d.consumeToken(semicolon, 1, 0), nil
+			default:
+				return d.parseFieldName()
+			}
+
+		case MessageOpen:
+			// Next token can be MessageClose, comma, semicolon or Name.
+			if isEOF {
+				return Token{}, ErrUnexpectedEOF
+			}
+			switch ch := d.in[0]; ch {
+			case closeCh:
+				d.popOpenStack()
+				return d.consumeToken(MessageClose, 1, 0), nil
+			case otherCloseChar[closeCh]:
+				return Token{}, d.newSyntaxError(mismatchedFmt, ch)
+			case ',':
+				return d.consumeToken(comma, 1, 0), nil
+			case ';':
+				return d.consumeToken(semicolon, 1, 0), nil
+			default:
+				return d.parseFieldName()
+			}
+
+		default:
+			// It is not possible to have this case. Let it panic below.
+		}
+
+	case comma, semicolon:
+		openKind, closeCh := d.currentOpenKind()
+		switch openKind {
+		case bof:
+			// Top level message. Next token can be EOF or Name.
+			if isEOF {
+				return d.consumeToken(EOF, 0, 0), nil
+			}
+			return d.parseFieldName()
+
+		case MessageOpen:
+			// Next token can be MessageClose or Name.
+			if isEOF {
+				return Token{}, ErrUnexpectedEOF
+			}
+			switch ch := d.in[0]; ch {
+			case closeCh:
+				d.popOpenStack()
+				return d.consumeToken(MessageClose, 1, 0), nil
+			case otherCloseChar[closeCh]:
+				return Token{}, d.newSyntaxError(mismatchedFmt, ch)
+			default:
+				return d.parseFieldName()
+			}
+
+		case ListOpen:
+			if lastKind == semicolon {
+				// It is not be possible to have this case as logic here
+				// should not have produced a semicolon Token when inside a
+				// list. Let it panic below.
+				break
+			}
+			// Next token can be MessageOpen or Scalar.
+			if isEOF {
+				return Token{}, ErrUnexpectedEOF
+			}
+			switch ch := d.in[0]; ch {
+			case '{', '<':
+				d.pushOpenStack(ch)
+				return d.consumeToken(MessageOpen, 1, 0), nil
+			default:
+				return d.parseScalar()
+			}
+		}
+	}
+
+	line, column := d.Position(len(d.orig) - len(d.in))
+	panic(fmt.Sprintf("Decoder.parseNext: bug at handling line %d:%d with lastKind=%v", line, column, lastKind))
+}
+
+var otherCloseChar = map[byte]byte{
+	'}': '>',
+	'>': '}',
+}
+
+// currentOpenKind indicates whether current position is inside a message, list
+// or top-level message by returning MessageOpen, ListOpen or bof respectively.
+// If the returned kind is either a MessageOpen or ListOpen, it also returns the
+// corresponding closing character.
+func (d *Decoder) currentOpenKind() (Kind, byte) {
+	if len(d.openStack) == 0 {
+		return bof, 0
+	}
+	openCh := d.openStack[len(d.openStack)-1]
+	switch openCh {
+	case '{':
+		return MessageOpen, '}'
+	case '<':
+		return MessageOpen, '>'
+	case '[':
+		return ListOpen, ']'
+	}
+	panic(fmt.Sprintf("Decoder: openStack contains invalid byte %s", string(openCh)))
+}
+
+func (d *Decoder) pushOpenStack(ch byte) {
+	d.openStack = append(d.openStack, ch)
+}
+
+func (d *Decoder) popOpenStack() {
+	d.openStack = d.openStack[:len(d.openStack)-1]
+}
+
+// parseFieldName parses field name and separator.
+func (d *Decoder) parseFieldName() (tok Token, err error) {
+	defer func() {
+		if err == nil && d.tryConsumeChar(':') {
+			tok.attrs |= hasSeparator
+		}
+	}()
+
+	// Extension or Any type URL.
+	if d.in[0] == '[' {
+		return d.parseTypeName()
+	}
+
+	// Identifier.
+	if size := parseIdent(d.in, false); size > 0 {
+		return d.consumeToken(Name, size, uint8(IdentName)), nil
+	}
+
+	// Field number. Identify if input is a valid number that is not negative
+	// and is decimal integer within 32-bit range.
+	if num := parseNumber(d.in); num.size > 0 {
+		if !num.neg && num.kind == numDec {
+			if _, err := strconv.ParseInt(string(d.in[:num.size]), 10, 32); err == nil {
+				return d.consumeToken(Name, num.size, uint8(FieldNumber)), nil
+			}
+		}
+		return Token{}, d.newSyntaxError("invalid field number: %s", d.in[:num.size])
+	}
+
+	return Token{}, d.newSyntaxError("invalid field name: %s", errRegexp.Find(d.in))
+}
+
+// parseTypeName parses Any type URL or extension field name. The name is
+// enclosed in [ and ] characters. The C++ parser does not handle many legal URL
+// strings. This implementation is more liberal and allows for the pattern
+// ^[-_a-zA-Z0-9]+([./][-_a-zA-Z0-9]+)*`). Whitespaces and comments are allowed
+// in between [ ], '.', '/' and the sub names.
+func (d *Decoder) parseTypeName() (Token, error) {
+	startPos := len(d.orig) - len(d.in)
+	// Use alias s to advance first in order to use d.in for error handling.
+	// Caller already checks for [ as first character.
+	s := consume(d.in[1:], 0)
+	if len(s) == 0 {
+		return Token{}, ErrUnexpectedEOF
+	}
+
+	var name []byte
+	for len(s) > 0 && isTypeNameChar(s[0]) {
+		name = append(name, s[0])
+		s = s[1:]
+	}
+	s = consume(s, 0)
+
+	var closed bool
+	for len(s) > 0 && !closed {
+		switch {
+		case s[0] == ']':
+			s = s[1:]
+			closed = true
+
+		case s[0] == '/', s[0] == '.':
+			if len(name) > 0 && (name[len(name)-1] == '/' || name[len(name)-1] == '.') {
+				return Token{}, d.newSyntaxError("invalid type URL/extension field name: %s",
+					d.orig[startPos:len(d.orig)-len(s)+1])
+			}
+			name = append(name, s[0])
+			s = s[1:]
+			s = consume(s, 0)
+			for len(s) > 0 && isTypeNameChar(s[0]) {
+				name = append(name, s[0])
+				s = s[1:]
+			}
+			s = consume(s, 0)
+
+		default:
+			return Token{}, d.newSyntaxError(
+				"invalid type URL/extension field name: %s", d.orig[startPos:len(d.orig)-len(s)+1])
+		}
+	}
+
+	if !closed {
+		return Token{}, ErrUnexpectedEOF
+	}
+
+	// First character cannot be '.'. Last character cannot be '.' or '/'.
+	size := len(name)
+	if size == 0 || name[0] == '.' || name[size-1] == '.' || name[size-1] == '/' {
+		return Token{}, d.newSyntaxError("invalid type URL/extension field name: %s",
+			d.orig[startPos:len(d.orig)-len(s)])
+	}
+
+	d.in = s
+	endPos := len(d.orig) - len(d.in)
+	d.consume(0)
+
+	return Token{
+		kind:  Name,
+		attrs: uint8(TypeName),
+		pos:   startPos,
+		raw:   d.orig[startPos:endPos],
+		str:   string(name),
+	}, nil
+}
+
+func isTypeNameChar(b byte) bool {
+	return (b == '-' || b == '_' ||
+		('0' <= b && b <= '9') ||
+		('a' <= b && b <= 'z') ||
+		('A' <= b && b <= 'Z'))
+}
+
+func isWhiteSpace(b byte) bool {
+	switch b {
+	case ' ', '\n', '\r', '\t':
+		return true
+	default:
+		return false
+	}
+}
+
+// parseIdent parses an unquoted proto identifier and returns size.
+// If allowNeg is true, it allows '-' to be the first character in the
+// identifier. This is used when parsing literal values like -infinity, etc.
+// Regular expression matches an identifier: `^[_a-zA-Z][_a-zA-Z0-9]*`
+func parseIdent(input []byte, allowNeg bool) int {
+	var size int
+
+	s := input
+	if len(s) == 0 {
+		return 0
+	}
+
+	if allowNeg && s[0] == '-' {
+		s = s[1:]
+		size++
+		if len(s) == 0 {
+			return 0
+		}
+	}
+
+	switch {
+	case s[0] == '_',
+		'a' <= s[0] && s[0] <= 'z',
+		'A' <= s[0] && s[0] <= 'Z':
+		s = s[1:]
+		size++
+	default:
+		return 0
+	}
+
+	for len(s) > 0 && (s[0] == '_' ||
+		'a' <= s[0] && s[0] <= 'z' ||
+		'A' <= s[0] && s[0] <= 'Z' ||
+		'0' <= s[0] && s[0] <= '9') {
+		s = s[1:]
+		size++
+	}
+
+	if len(s) > 0 && !isDelim(s[0]) {
+		return 0
+	}
+
+	return size
+}
+
+// parseScalar parses for a string, literal or number value.
+func (d *Decoder) parseScalar() (Token, error) {
+	if d.in[0] == '"' || d.in[0] == '\'' {
+		return d.parseStringValue()
+	}
+
+	if tok, ok := d.parseLiteralValue(); ok {
+		return tok, nil
+	}
+
+	if tok, ok := d.parseNumberValue(); ok {
+		return tok, nil
+	}
+
+	return Token{}, d.newSyntaxError("invalid scalar value: %s", errRegexp.Find(d.in))
+}
+
+// parseLiteralValue parses a literal value. A literal value is used for
+// bools, special floats and enums. This function simply identifies that the
+// field value is a literal.
+func (d *Decoder) parseLiteralValue() (Token, bool) {
+	size := parseIdent(d.in, true)
+	if size == 0 {
+		return Token{}, false
+	}
+	return d.consumeToken(Scalar, size, literalValue), true
+}
+
+// consumeToken constructs a Token for given Kind from d.in and consumes given
+// size-length from it.
+func (d *Decoder) consumeToken(kind Kind, size int, attrs uint8) Token {
+	// Important to compute raw and pos before consuming.
+	tok := Token{
+		kind:  kind,
+		attrs: attrs,
+		pos:   len(d.orig) - len(d.in),
+		raw:   d.in[:size],
+	}
+	d.consume(size)
+	return tok
+}
+
+// newSyntaxError returns a syntax error with line and column information for
+// current position.
+func (d *Decoder) newSyntaxError(f string, x ...interface{}) error {
+	e := errors.New(f, x...)
+	line, column := d.Position(len(d.orig) - len(d.in))
+	return errors.New("syntax error (line %d:%d): %v", line, column, e)
+}
+
+// Position returns line and column number of given index of the original input.
+// It will panic if index is out of range.
+func (d *Decoder) Position(idx int) (line int, column int) {
+	b := d.orig[:idx]
+	line = bytes.Count(b, []byte("\n")) + 1
+	if i := bytes.LastIndexByte(b, '\n'); i >= 0 {
+		b = b[i+1:]
+	}
+	column = utf8.RuneCount(b) + 1 // ignore multi-rune characters
+	return line, column
+}
+
+func (d *Decoder) tryConsumeChar(c byte) bool {
+	if len(d.in) > 0 && d.in[0] == c {
+		d.consume(1)
+		return true
+	}
+	return false
+}
+
+// consume consumes n bytes of input and any subsequent whitespace or comments.
+func (d *Decoder) consume(n int) {
+	d.in = consume(d.in, n)
+	return
+}
+
+// consume consumes n bytes of input and any subsequent whitespace or comments.
+func consume(b []byte, n int) []byte {
+	b = b[n:]
+	for len(b) > 0 {
+		switch b[0] {
+		case ' ', '\n', '\r', '\t':
+			b = b[1:]
+		case '#':
+			if i := bytes.IndexByte(b, '\n'); i >= 0 {
+				b = b[i+len("\n"):]
+			} else {
+				b = nil
+			}
+		default:
+			return b
+		}
+	}
+	return b
+}
+
+// Any sequence that looks like a non-delimiter (for error reporting).
+var errRegexp = regexp.MustCompile(`^([-+._a-zA-Z0-9\/]+|.)`)
+
+// isDelim returns true if given byte is a delimiter character.
+func isDelim(c byte) bool {
+	return !(c == '-' || c == '+' || c == '.' || c == '_' ||
+		('a' <= c && c <= 'z') ||
+		('A' <= c && c <= 'Z') ||
+		('0' <= c && c <= '9'))
+}

vendor/google.golang.org/protobuf/internal/encoding/text/decode_number.go

@@ -0,0 +1,190 @@
+// Copyright 2018 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package text
+
+// parseNumberValue parses a number from the input and returns a Token object.
+func (d *Decoder) parseNumberValue() (Token, bool) {
+	in := d.in
+	num := parseNumber(in)
+	if num.size == 0 {
+		return Token{}, false
+	}
+	numAttrs := num.kind
+	if num.neg {
+		numAttrs |= isNegative
+	}
+	strSize := num.size
+	last := num.size - 1
+	if num.kind == numFloat && (d.in[last] == 'f' || d.in[last] == 'F') {
+		strSize = last
+	}
+	tok := Token{
+		kind:     Scalar,
+		attrs:    numberValue,
+		pos:      len(d.orig) - len(d.in),
+		raw:      d.in[:num.size],
+		str:      string(d.in[:strSize]),
+		numAttrs: numAttrs,
+	}
+	d.consume(num.size)
+	return tok, true
+}
+
+const (
+	numDec uint8 = (1 << iota) / 2
+	numHex
+	numOct
+	numFloat
+)
+
+// number is the result of parsing out a valid number from parseNumber. It
+// contains data for doing float or integer conversion via the strconv package
+// in conjunction with the input bytes.
+type number struct {
+	kind uint8
+	neg  bool
+	size int
+}
+
+// parseNumber constructs a number object from given input. It allows for the
+// following patterns:
+//   integer: ^-?([1-9][0-9]*|0[xX][0-9a-fA-F]+|0[0-7]*)
+//   float: ^-?((0|[1-9][0-9]*)?([.][0-9]*)?([eE][+-]?[0-9]+)?[fF]?)
+// It also returns the number of parsed bytes for the given number, 0 if it is
+// not a number.
+func parseNumber(input []byte) number {
+	kind := numDec
+	var size int
+	var neg bool
+
+	s := input
+	if len(s) == 0 {
+		return number{}
+	}
+
+	// Optional -
+	if s[0] == '-' {
+		neg = true
+		s = s[1:]
+		size++
+		if len(s) == 0 {
+			return number{}
+		}
+	}
+
+	// C++ allows for whitespace and comments in between the negative sign and
+	// the rest of the number. This logic currently does not but is consistent
+	// with v1.
+
+	switch {
+	case s[0] == '0':
+		if len(s) > 1 {
+			switch {
+			case s[1] == 'x' || s[1] == 'X':
+				// Parse as hex number.
+				kind = numHex
+				n := 2
+				s = s[2:]
+				for len(s) > 0 && (('0' <= s[0] && s[0] <= '9') ||
+					('a' <= s[0] && s[0] <= 'f') ||
+					('A' <= s[0] && s[0] <= 'F')) {
+					s = s[1:]
+					n++
+				}
+				if n == 2 {
+					return number{}
+				}
+				size += n
+
+			case '0' <= s[1] && s[1] <= '7':
+				// Parse as octal number.
+				kind = numOct
+				n := 2
+				s = s[2:]
+				for len(s) > 0 && '0' <= s[0] && s[0] <= '7' {
+					s = s[1:]
+					n++
+				}
+				size += n
+			}
+
+			if kind&(numHex|numOct) > 0 {
+				if len(s) > 0 && !isDelim(s[0]) {
+					return number{}
+				}
+				return number{kind: kind, neg: neg, size: size}
+			}
+		}
+		s = s[1:]
+		size++
+
+	case '1' <= s[0] && s[0] <= '9':
+		n := 1
+		s = s[1:]
+		for len(s) > 0 && '0' <= s[0] && s[0] <= '9' {
+			s = s[1:]
+			n++
+		}
+		size += n
+
+	case s[0] == '.':
+		// Set kind to numFloat to signify the intent to parse as float. And
+		// that it needs to have other digits after '.'.
+		kind = numFloat
+
+	default:
+		return number{}
+	}
+
+	// . followed by 0 or more digits.
+	if len(s) > 0 && s[0] == '.' {
+		n := 1
+		s = s[1:]
+		// If decimal point was before any digits, it should be followed by
+		// other digits.
+		if len(s) == 0 && kind == numFloat {
+			return number{}
+		}
+		for len(s) > 0 && '0' <= s[0] && s[0] <= '9' {
+			s = s[1:]
+			n++
+		}
+		size += n
+		kind = numFloat
+	}
+
+	// e or E followed by an optional - or + and 1 or more digits.
+	if len(s) >= 2 && (s[0] == 'e' || s[0] == 'E') {
+		kind = numFloat
+		s = s[1:]
+		n := 1
+		if s[0] == '+' || s[0] == '-' {
+			s = s[1:]
+			n++
+			if len(s) == 0 {
+				return number{}
+			}
+		}
+		for len(s) > 0 && '0' <= s[0] && s[0] <= '9' {
+			s = s[1:]
+			n++
+		}
+		size += n
+	}
+
+	// Optional suffix f or F for floats.
+	if len(s) > 0 && (s[0] == 'f' || s[0] == 'F') {
+		kind = numFloat
+		s = s[1:]
+		size++
+	}
+
+	// Check that next byte is a delimiter or it is at the end.
+	if len(s) > 0 && !isDelim(s[0]) {
+		return number{}
+	}
+
+	return number{kind: kind, neg: neg, size: size}
+}

vendor/google.golang.org/protobuf/internal/encoding/text/decode_string.go

@@ -0,0 +1,161 @@
+// Copyright 2018 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package text
+
+import (
+	"bytes"
+	"strconv"
+	"strings"
+	"unicode"
+	"unicode/utf16"
+	"unicode/utf8"
+
+	"google.golang.org/protobuf/internal/strs"
+)
+
+// parseStringValue parses string field token.
+// This differs from parseString since the text format allows
+// multiple back-to-back string literals where they are semantically treated
+// as a single large string with all values concatenated.
+//
+// E.g., `"foo" "bar" "baz"` => "foobarbaz"
+func (d *Decoder) parseStringValue() (Token, error) {
+	// Note that the ending quote is sufficient to unambiguously mark the end
+	// of a string. Thus, the text grammar does not require intervening
+	// whitespace or control characters in-between strings.
+	// Thus, the following is valid:
+	//	`"foo"'bar'"baz"` => "foobarbaz"
+	in0 := d.in
+	var ss []string
+	for len(d.in) > 0 && (d.in[0] == '"' || d.in[0] == '\'') {
+		s, err := d.parseString()
+		if err != nil {
+			return Token{}, err
+		}
+		ss = append(ss, s)
+	}
+	// d.in already points to the end of the value at this point.
+	return Token{
+		kind:  Scalar,
+		attrs: stringValue,
+		pos:   len(d.orig) - len(in0),
+		raw:   in0[:len(in0)-len(d.in)],
+		str:   strings.Join(ss, ""),
+	}, nil
+}
+
+// parseString parses a string value enclosed in " or '.
+func (d *Decoder) parseString() (string, error) {
+	in := d.in
+	if len(in) == 0 {
+		return "", ErrUnexpectedEOF
+	}
+	quote := in[0]
+	in = in[1:]
+	i := indexNeedEscapeInBytes(in)
+	in, out := in[i:], in[:i:i] // set cap to prevent mutations
+	for len(in) > 0 {
+		switch r, n := utf8.DecodeRune(in); {
+		case r == utf8.RuneError && n == 1:
+			return "", d.newSyntaxError("invalid UTF-8 detected")
+		case r == 0 || r == '\n':
+			return "", d.newSyntaxError("invalid character %q in string", r)
+		case r == rune(quote):
+			in = in[1:]
+			d.consume(len(d.in) - len(in))
+			return string(out), nil
+		case r == '\\':
+			if len(in) < 2 {
+				return "", ErrUnexpectedEOF
+			}
+			switch r := in[1]; r {
+			case '"', '\'', '\\', '?':
+				in, out = in[2:], append(out, r)
+			case 'a':
+				in, out = in[2:], append(out, '\a')
+			case 'b':
+				in, out = in[2:], append(out, '\b')
+			case 'n':
+				in, out = in[2:], append(out, '\n')
+			case 'r':
+				in, out = in[2:], append(out, '\r')
+			case 't':
+				in, out = in[2:], append(out, '\t')
+			case 'v':
+				in, out = in[2:], append(out, '\v')
+			case 'f':
+				in, out = in[2:], append(out, '\f')
+			case '0', '1', '2', '3', '4', '5', '6', '7':
+				// One, two, or three octal characters.
+				n := len(in[1:]) - len(bytes.TrimLeft(in[1:], "01234567"))
+				if n > 3 {
+					n = 3
+				}
+				v, err := strconv.ParseUint(string(in[1:1+n]), 8, 8)
+				if err != nil {
+					return "", d.newSyntaxError("invalid octal escape code %q in string", in[:1+n])
+				}
+				in, out = in[1+n:], append(out, byte(v))
+			case 'x':
+				// One or two hexadecimal characters.
+				n := len(in[2:]) - len(bytes.TrimLeft(in[2:], "0123456789abcdefABCDEF"))
+				if n > 2 {
+					n = 2
+				}
+				v, err := strconv.ParseUint(string(in[2:2+n]), 16, 8)
+				if err != nil {
+					return "", d.newSyntaxError("invalid hex escape code %q in string", in[:2+n])
+				}
+				in, out = in[2+n:], append(out, byte(v))
+			case 'u', 'U':
+				// Four or eight hexadecimal characters
+				n := 6
+				if r == 'U' {
+					n = 10
+				}
+				if len(in) < n {
+					return "", ErrUnexpectedEOF
+				}
+				v, err := strconv.ParseUint(string(in[2:n]), 16, 32)
+				if utf8.MaxRune < v || err != nil {
+					return "", d.newSyntaxError("invalid Unicode escape code %q in string", in[:n])
+				}
+				in = in[n:]
+
+				r := rune(v)
+				if utf16.IsSurrogate(r) {
+					if len(in) < 6 {
+						return "", ErrUnexpectedEOF
+					}
+					v, err := strconv.ParseUint(string(in[2:6]), 16, 16)
+					r = utf16.DecodeRune(r, rune(v))
+					if in[0] != '\\' || in[1] != 'u' || r == unicode.ReplacementChar || err != nil {
+						return "", d.newSyntaxError("invalid Unicode escape code %q in string", in[:6])
+					}
+					in = in[6:]
+				}
+				out = append(out, string(r)...)
+			default:
+				return "", d.newSyntaxError("invalid escape code %q in string", in[:2])
+			}
+		default:
+			i := indexNeedEscapeInBytes(in[n:])
+			in, out = in[n+i:], append(out, in[:n+i]...)
+		}
+	}
+	return "", ErrUnexpectedEOF
+}
+
+// indexNeedEscapeInString returns the index of the character that needs
+// escaping. If no characters need escaping, this returns the input length.
+func indexNeedEscapeInBytes(b []byte) int { return indexNeedEscapeInString(strs.UnsafeString(b)) }
+
+// UnmarshalString returns an unescaped string given a textproto string value.
+// String value needs to contain single or double quotes. This is only used by
+// internal/encoding/defval package for unmarshaling bytes.
+func UnmarshalString(s string) (string, error) {
+	d := NewDecoder([]byte(s))
+	return d.parseString()
+}

vendor/google.golang.org/protobuf/internal/encoding/text/decode_token.go

@@ -0,0 +1,373 @@
+// Copyright 2018 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package text
+
+import (
+	"bytes"
+	"fmt"
+	"math"
+	"strconv"
+	"strings"
+
+	"google.golang.org/protobuf/internal/flags"
+)
+
+// Kind represents a token kind expressible in the textproto format.
+type Kind uint8
+
+// Kind values.
+const (
+	Invalid Kind = iota
+	EOF
+	Name   // Name indicates the field name.
+	Scalar // Scalar are scalar values, e.g. "string", 47, ENUM_LITERAL, true.
+	MessageOpen
+	MessageClose
+	ListOpen
+	ListClose
+
+	// comma and semi-colon are only for parsing in between values and should not be exposed.
+	comma
+	semicolon
+
+	// bof indicates beginning of file, which is the default token
+	// kind at the beginning of parsing.
+	bof = Invalid
+)
+
+func (t Kind) String() string {
+	switch t {
+	case Invalid:
+		return "<invalid>"
+	case EOF:
+		return "eof"
+	case Scalar:
+		return "scalar"
+	case Name:
+		return "name"
+	case MessageOpen:
+		return "{"
+	case MessageClose:
+		return "}"
+	case ListOpen:
+		return "["
+	case ListClose:
+		return "]"
+	case comma:
+		return ","
+	case semicolon:
+		return ";"
+	default:
+		return fmt.Sprintf("<invalid:%v>", uint8(t))
+	}
+}
+
+// NameKind represents different types of field names.
+type NameKind uint8
+
+// NameKind values.
+const (
+	IdentName NameKind = iota + 1
+	TypeName
+	FieldNumber
+)
+
+func (t NameKind) String() string {
+	switch t {
+	case IdentName:
+		return "IdentName"
+	case TypeName:
+		return "TypeName"
+	case FieldNumber:
+		return "FieldNumber"
+	default:
+		return fmt.Sprintf("<invalid:%v>", uint8(t))
+	}
+}
+
+// Bit mask in Token.attrs to indicate if a Name token is followed by the
+// separator char ':'. The field name separator char is optional for message
+// field or repeated message field, but required for all other types. Decoder
+// simply indicates whether a Name token is followed by separator or not.  It is
+// up to the prototext package to validate.
+const hasSeparator = 1 << 7
+
+// Scalar value types.
+const (
+	numberValue = iota + 1
+	stringValue
+	literalValue
+)
+
+// Bit mask in Token.numAttrs to indicate that the number is a negative.
+const isNegative = 1 << 7
+
+// Token provides a parsed token kind and value. Values are provided by the
+// different accessor methods.
+type Token struct {
+	// Kind of the Token object.
+	kind Kind
+	// attrs contains metadata for the following Kinds:
+	// Name: hasSeparator bit and one of NameKind.
+	// Scalar: one of numberValue, stringValue, literalValue.
+	attrs uint8
+	// numAttrs contains metadata for numberValue:
+	// - highest bit is whether negative or positive.
+	// - lower bits indicate one of numDec, numHex, numOct, numFloat.
+	numAttrs uint8
+	// pos provides the position of the token in the original input.
+	pos int
+	// raw bytes of the serialized token.
+	// This is a subslice into the original input.
+	raw []byte
+	// str contains parsed string for the following:
+	// - stringValue of Scalar kind
+	// - numberValue of Scalar kind
+	// - TypeName of Name kind
+	str string
+}
+
+// Kind returns the token kind.
+func (t Token) Kind() Kind {
+	return t.kind
+}
+
+// RawString returns the read value in string.
+func (t Token) RawString() string {
+	return string(t.raw)
+}
+
+// Pos returns the token position from the input.
+func (t Token) Pos() int {
+	return t.pos
+}
+
+// NameKind returns IdentName, TypeName or FieldNumber.
+// It panics if type is not Name.
+func (t Token) NameKind() NameKind {
+	if t.kind == Name {
+		return NameKind(t.attrs &^ hasSeparator)
+	}
+	panic(fmt.Sprintf("Token is not a Name type: %s", t.kind))
+}
+
+// HasSeparator returns true if the field name is followed by the separator char
+// ':', else false. It panics if type is not Name.
+func (t Token) HasSeparator() bool {
+	if t.kind == Name {
+		return t.attrs&hasSeparator != 0
+	}
+	panic(fmt.Sprintf("Token is not a Name type: %s", t.kind))
+}
+
+// IdentName returns the value for IdentName type.
+func (t Token) IdentName() string {
+	if t.kind == Name && t.attrs&uint8(IdentName) != 0 {
+		return string(t.raw)
+	}
+	panic(fmt.Sprintf("Token is not an IdentName: %s:%s", t.kind, NameKind(t.attrs&^hasSeparator)))
+}
+
+// TypeName returns the value for TypeName type.
+func (t Token) TypeName() string {
+	if t.kind == Name && t.attrs&uint8(TypeName) != 0 {
+		return t.str
+	}
+	panic(fmt.Sprintf("Token is not a TypeName: %s:%s", t.kind, NameKind(t.attrs&^hasSeparator)))
+}
+
+// FieldNumber returns the value for FieldNumber type. It returns a
+// non-negative int32 value. Caller will still need to validate for the correct
+// field number range.
+func (t Token) FieldNumber() int32 {
+	if t.kind != Name || t.attrs&uint8(FieldNumber) == 0 {
+		panic(fmt.Sprintf("Token is not a FieldNumber: %s:%s", t.kind, NameKind(t.attrs&^hasSeparator)))
+	}
+	// Following should not return an error as it had already been called right
+	// before this Token was constructed.
+	num, _ := strconv.ParseInt(string(t.raw), 10, 32)
+	return int32(num)
+}
+
+// String returns the string value for a Scalar type.
+func (t Token) String() (string, bool) {
+	if t.kind != Scalar || t.attrs != stringValue {
+		return "", false
+	}
+	return t.str, true
+}
+
+// Enum returns the literal value for a Scalar type for use as enum literals.
+func (t Token) Enum() (string, bool) {
+	if t.kind != Scalar || t.attrs != literalValue || (len(t.raw) > 0 && t.raw[0] == '-') {
+		return "", false
+	}
+	return string(t.raw), true
+}
+
+// Bool returns the bool value for a Scalar type.
+func (t Token) Bool() (bool, bool) {
+	if t.kind != Scalar {
+		return false, false
+	}
+	switch t.attrs {
+	case literalValue:
+		if b, ok := boolLits[string(t.raw)]; ok {
+			return b, true
+		}
+	case numberValue:
+		// Unsigned integer representation of 0 or 1 is permitted: 00, 0x0, 01,
+		// 0x1, etc.
+		n, err := strconv.ParseUint(t.str, 0, 64)
+		if err == nil {
+			switch n {
+			case 0:
+				return false, true
+			case 1:
+				return true, true
+			}
+		}
+	}
+	return false, false
+}
+
+// These exact boolean literals are the ones supported in C++.
+var boolLits = map[string]bool{
+	"t":     true,
+	"true":  true,
+	"True":  true,
+	"f":     false,
+	"false": false,
+	"False": false,
+}
+
+// Uint64 returns the uint64 value for a Scalar type.
+func (t Token) Uint64() (uint64, bool) {
+	if t.kind != Scalar || t.attrs != numberValue ||
+		t.numAttrs&isNegative > 0 || t.numAttrs&numFloat > 0 {
+		return 0, false
+	}
+	n, err := strconv.ParseUint(t.str, 0, 64)
+	if err != nil {
+		return 0, false
+	}
+	return n, true
+}
+
+// Uint32 returns the uint32 value for a Scalar type.
+func (t Token) Uint32() (uint32, bool) {
+	if t.kind != Scalar || t.attrs != numberValue ||
+		t.numAttrs&isNegative > 0 || t.numAttrs&numFloat > 0 {
+		return 0, false
+	}
+	n, err := strconv.ParseUint(t.str, 0, 32)
+	if err != nil {
+		return 0, false
+	}
+	return uint32(n), true
+}
+
+// Int64 returns the int64 value for a Scalar type.
+func (t Token) Int64() (int64, bool) {
+	if t.kind != Scalar || t.attrs != numberValue || t.numAttrs&numFloat > 0 {
+		return 0, false
+	}
+	if n, err := strconv.ParseInt(t.str, 0, 64); err == nil {
+		return n, true
+	}
+	// C++ accepts large positive hex numbers as negative values.
+	// This feature is here for proto1 backwards compatibility purposes.
+	if flags.ProtoLegacy && (t.numAttrs == numHex) {
+		if n, err := strconv.ParseUint(t.str, 0, 64); err == nil {
+			return int64(n), true
+		}
+	}
+	return 0, false
+}
+
+// Int32 returns the int32 value for a Scalar type.
+func (t Token) Int32() (int32, bool) {
+	if t.kind != Scalar || t.attrs != numberValue || t.numAttrs&numFloat > 0 {
+		return 0, false
+	}
+	if n, err := strconv.ParseInt(t.str, 0, 32); err == nil {
+		return int32(n), true
+	}
+	// C++ accepts large positive hex numbers as negative values.
+	// This feature is here for proto1 backwards compatibility purposes.
+	if flags.ProtoLegacy && (t.numAttrs == numHex) {
+		if n, err := strconv.ParseUint(t.str, 0, 32); err == nil {
+			return int32(n), true
+		}
+	}
+	return 0, false
+}
+
+// Float64 returns the float64 value for a Scalar type.
+func (t Token) Float64() (float64, bool) {
+	if t.kind != Scalar {
+		return 0, false
+	}
+	switch t.attrs {
+	case literalValue:
+		if f, ok := floatLits[strings.ToLower(string(t.raw))]; ok {
+			return f, true
+		}
+	case numberValue:
+		n, err := strconv.ParseFloat(t.str, 64)
+		if err == nil {
+			return n, true
+		}
+		nerr := err.(*strconv.NumError)
+		if nerr.Err == strconv.ErrRange {
+			return n, true
+		}
+	}
+	return 0, false
+}
+
+// Float32 returns the float32 value for a Scalar type.
+func (t Token) Float32() (float32, bool) {
+	if t.kind != Scalar {
+		return 0, false
+	}
+	switch t.attrs {
+	case literalValue:
+		if f, ok := floatLits[strings.ToLower(string(t.raw))]; ok {
+			return float32(f), true
+		}
+	case numberValue:
+		n, err := strconv.ParseFloat(t.str, 64)
+		if err == nil {
+			// Overflows are treated as (-)infinity.
+			return float32(n), true
+		}
+		nerr := err.(*strconv.NumError)
+		if nerr.Err == strconv.ErrRange {
+			return float32(n), true
+		}
+	}
+	return 0, false
+}
+
+// These are the supported float literals which C++ permits case-insensitive
+// variants of these.
+var floatLits = map[string]float64{
+	"nan":       math.NaN(),
+	"inf":       math.Inf(1),
+	"infinity":  math.Inf(1),
+	"-inf":      math.Inf(-1),
+	"-infinity": math.Inf(-1),
+}
+
+// TokenEquals returns true if given Tokens are equal, else false.
+func TokenEquals(x, y Token) bool {
+	return x.kind == y.kind &&
+		x.attrs == y.attrs &&
+		x.numAttrs == y.numAttrs &&
+		x.pos == y.pos &&
+		bytes.Equal(x.raw, y.raw) &&
+		x.str == y.str
+}

vendor/google.golang.org/protobuf/internal/encoding/text/doc.go

@@ -0,0 +1,29 @@
+// Copyright 2018 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// Package text implements the text format for protocol buffers.
+// This package has no semantic understanding for protocol buffers and is only
+// a parser and composer for the format.
+//
+// There is no formal specification for the protobuf text format, as such the
+// C++ implementation (see google::protobuf::TextFormat) is the reference
+// implementation of the text format.
+//
+// This package is neither a superset nor a subset of the C++ implementation.
+// This implementation permits a more liberal grammar in some cases to be
+// backwards compatible with the historical Go implementation.
+// Future parsings unique to Go should not be added.
+// Some grammars allowed by the C++ implementation are deliberately
+// not implemented here because they are considered a bug by the protobuf team
+// and should not be replicated.
+//
+// The Go implementation should implement a sufficient amount of the C++
+// grammar such that the default text serialization by C++ can be parsed by Go.
+// However, just because the C++ parser accepts some input does not mean that
+// the Go implementation should as well.
+//
+// The text format is almost a superset of JSON except:
+//	* message keys are not quoted strings, but identifiers
+//	* the top-level value must be a message without the delimiters
+package text

vendor/google.golang.org/protobuf/internal/encoding/text/encode.go

@@ -0,0 +1,267 @@
+// Copyright 2018 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package text
+
+import (
+	"math"
+	"math/bits"
+	"strconv"
+	"strings"
+	"unicode/utf8"
+
+	"google.golang.org/protobuf/internal/detrand"
+	"google.golang.org/protobuf/internal/errors"
+)
+
+// encType represents an encoding type.
+type encType uint8
+
+const (
+	_ encType = (1 << iota) / 2
+	name
+	scalar
+	messageOpen
+	messageClose
+)
+
+// Encoder provides methods to write out textproto constructs and values. The user is
+// responsible for producing valid sequences of constructs and values.
+type Encoder struct {
+	encoderState
+
+	indent      string
+	newline     string // set to "\n" if len(indent) > 0
+	delims      [2]byte
+	outputASCII bool
+}
+
+type encoderState struct {
+	lastType encType
+	indents  []byte
+	out      []byte
+}
+
+// NewEncoder returns an Encoder.
+//
+// If indent is a non-empty string, it causes every entry in a List or Message
+// to be preceded by the indent and trailed by a newline.
+//
+// If delims is not the zero value, it controls the delimiter characters used
+// for messages (e.g., "{}" vs "<>").
+//
+// If outputASCII is true, strings will be serialized in such a way that
+// multi-byte UTF-8 sequences are escaped. This property ensures that the
+// overall output is ASCII (as opposed to UTF-8).
+func NewEncoder(indent string, delims [2]byte, outputASCII bool) (*Encoder, error) {
+	e := &Encoder{}
+	if len(indent) > 0 {
+		if strings.Trim(indent, " \t") != "" {
+			return nil, errors.New("indent may only be composed of space and tab characters")
+		}
+		e.indent = indent
+		e.newline = "\n"
+	}
+	switch delims {
+	case [2]byte{0, 0}:
+		e.delims = [2]byte{'{', '}'}
+	case [2]byte{'{', '}'}, [2]byte{'<', '>'}:
+		e.delims = delims
+	default:
+		return nil, errors.New("delimiters may only be \"{}\" or \"<>\"")
+	}
+	e.outputASCII = outputASCII
+
+	return e, nil
+}
+
+// Bytes returns the content of the written bytes.
+func (e *Encoder) Bytes() []byte {
+	return e.out
+}
+
+// StartMessage writes out the '{' or '<' symbol.
+func (e *Encoder) StartMessage() {
+	e.prepareNext(messageOpen)
+	e.out = append(e.out, e.delims[0])
+}
+
+// EndMessage writes out the '}' or '>' symbol.
+func (e *Encoder) EndMessage() {
+	e.prepareNext(messageClose)
+	e.out = append(e.out, e.delims[1])
+}
+
+// WriteName writes out the field name and the separator ':'.
+func (e *Encoder) WriteName(s string) {
+	e.prepareNext(name)
+	e.out = append(e.out, s...)
+	e.out = append(e.out, ':')
+}
+
+// WriteBool writes out the given boolean value.
+func (e *Encoder) WriteBool(b bool) {
+	if b {
+		e.WriteLiteral("true")
+	} else {
+		e.WriteLiteral("false")
+	}
+}
+
+// WriteString writes out the given string value.
+func (e *Encoder) WriteString(s string) {
+	e.prepareNext(scalar)
+	e.out = appendString(e.out, s, e.outputASCII)
+}
+
+func appendString(out []byte, in string, outputASCII bool) []byte {
+	out = append(out, '"')
+	i := indexNeedEscapeInString(in)
+	in, out = in[i:], append(out, in[:i]...)
+	for len(in) > 0 {
+		switch r, n := utf8.DecodeRuneInString(in); {
+		case r == utf8.RuneError && n == 1:
+			// We do not report invalid UTF-8 because strings in the text format
+			// are used to represent both the proto string and bytes type.
+			r = rune(in[0])
+			fallthrough
+		case r < ' ' || r == '"' || r == '\\':
+			out = append(out, '\\')
+			switch r {
+			case '"', '\\':
+				out = append(out, byte(r))
+			case '\n':
+				out = append(out, 'n')
+			case '\r':
+				out = append(out, 'r')
+			case '\t':
+				out = append(out, 't')
+			default:
+				out = append(out, 'x')
+				out = append(out, "00"[1+(bits.Len32(uint32(r))-1)/4:]...)
+				out = strconv.AppendUint(out, uint64(r), 16)
+			}
+			in = in[n:]
+		case outputASCII && r >= utf8.RuneSelf:
+			out = append(out, '\\')
+			if r <= math.MaxUint16 {
+				out = append(out, 'u')
+				out = append(out, "0000"[1+(bits.Len32(uint32(r))-1)/4:]...)
+				out = strconv.AppendUint(out, uint64(r), 16)
+			} else {
+				out = append(out, 'U')
+				out = append(out, "00000000"[1+(bits.Len32(uint32(r))-1)/4:]...)
+				out = strconv.AppendUint(out, uint64(r), 16)
+			}
+			in = in[n:]
+		default:
+			i := indexNeedEscapeInString(in[n:])
+			in, out = in[n+i:], append(out, in[:n+i]...)
+		}
+	}
+	out = append(out, '"')
+	return out
+}
+
+// indexNeedEscapeInString returns the index of the character that needs
+// escaping. If no characters need escaping, this returns the input length.
+func indexNeedEscapeInString(s string) int {
+	for i := 0; i < len(s); i++ {
+		if c := s[i]; c < ' ' || c == '"' || c == '\'' || c == '\\' || c >= utf8.RuneSelf {
+			return i
+		}
+	}
+	return len(s)
+}
+
+// WriteFloat writes out the given float value for given bitSize.
+func (e *Encoder) WriteFloat(n float64, bitSize int) {
+	e.prepareNext(scalar)
+	e.out = appendFloat(e.out, n, bitSize)
+}
+
+func appendFloat(out []byte, n float64, bitSize int) []byte {
+	switch {
+	case math.IsNaN(n):
+		return append(out, "nan"...)
+	case math.IsInf(n, +1):
+		return append(out, "inf"...)
+	case math.IsInf(n, -1):
+		return append(out, "-inf"...)
+	default:
+		return strconv.AppendFloat(out, n, 'g', -1, bitSize)
+	}
+}
+
+// WriteInt writes out the given signed integer value.
+func (e *Encoder) WriteInt(n int64) {
+	e.prepareNext(scalar)
+	e.out = append(e.out, strconv.FormatInt(n, 10)...)
+}
+
+// WriteUint writes out the given unsigned integer value.
+func (e *Encoder) WriteUint(n uint64) {
+	e.prepareNext(scalar)
+	e.out = append(e.out, strconv.FormatUint(n, 10)...)
+}
+
+// WriteLiteral writes out the given string as a literal value without quotes.
+// This is used for writing enum literal strings.
+func (e *Encoder) WriteLiteral(s string) {
+	e.prepareNext(scalar)
+	e.out = append(e.out, s...)
+}
+
+// prepareNext adds possible space and indentation for the next value based
+// on last encType and indent option. It also updates e.lastType to next.
+func (e *Encoder) prepareNext(next encType) {
+	defer func() {
+		e.lastType = next
+	}()
+
+	// Single line.
+	if len(e.indent) == 0 {
+		// Add space after each field before the next one.
+		if e.lastType&(scalar|messageClose) != 0 && next == name {
+			e.out = append(e.out, ' ')
+			// Add a random extra space to make output unstable.
+			if detrand.Bool() {
+				e.out = append(e.out, ' ')
+			}
+		}
+		return
+	}
+
+	// Multi-line.
+	switch {
+	case e.lastType == name:
+		e.out = append(e.out, ' ')
+		// Add a random extra space after name: to make output unstable.
+		if detrand.Bool() {
+			e.out = append(e.out, ' ')
+		}
+
+	case e.lastType == messageOpen && next != messageClose:
+		e.indents = append(e.indents, e.indent...)
+		e.out = append(e.out, '\n')
+		e.out = append(e.out, e.indents...)
+
+	case e.lastType&(scalar|messageClose) != 0:
+		if next == messageClose {
+			e.indents = e.indents[:len(e.indents)-len(e.indent)]
+		}
+		e.out = append(e.out, '\n')
+		e.out = append(e.out, e.indents...)
+	}
+}
+
+// Snapshot returns the current snapshot for use in Reset.
+func (e *Encoder) Snapshot() encoderState {
+	return e.encoderState
+}
+
+// Reset resets the Encoder to the given encoderState from a Snapshot.
+func (e *Encoder) Reset(es encoderState) {
+	e.encoderState = es
+}

vendor/google.golang.org/protobuf/internal/errors/errors.go

@@ -0,0 +1,89 @@
+// Copyright 2018 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// Package errors implements functions to manipulate errors.
+package errors
+
+import (
+	"errors"
+	"fmt"
+
+	"google.golang.org/protobuf/internal/detrand"
+)
+
+// Error is a sentinel matching all errors produced by this package.
+var Error = errors.New("protobuf error")
+
+// New formats a string according to the format specifier and arguments and
+// returns an error that has a "proto" prefix.
+func New(f string, x ...interface{}) error {
+	return &prefixError{s: format(f, x...)}
+}
+
+type prefixError struct{ s string }
+
+var prefix = func() string {
+	// Deliberately introduce instability into the error message string to
+	// discourage users from performing error string comparisons.
+	if detrand.Bool() {
+		return "proto: " // use non-breaking spaces (U+00a0)
+	} else {
+		return "proto: " // use regular spaces (U+0020)
+	}
+}()
+
+func (e *prefixError) Error() string {
+	return prefix + e.s
+}
+
+func (e *prefixError) Unwrap() error {
+	return Error
+}
+
+// Wrap returns an error that has a "proto" prefix, the formatted string described
+// by the format specifier and arguments, and a suffix of err. The error wraps err.
+func Wrap(err error, f string, x ...interface{}) error {
+	return &wrapError{
+		s:   format(f, x...),
+		err: err,
+	}
+}
+
+type wrapError struct {
+	s   string
+	err error
+}
+
+func (e *wrapError) Error() string {
+	return format("%v%v: %v", prefix, e.s, e.err)
+}
+
+func (e *wrapError) Unwrap() error {
+	return e.err
+}
+
+func (e *wrapError) Is(target error) bool {
+	return target == Error
+}
+
+func format(f string, x ...interface{}) string {
+	// avoid "proto: " prefix when chaining
+	for i := 0; i < len(x); i++ {
+		switch e := x[i].(type) {
+		case *prefixError:
+			x[i] = e.s
+		case *wrapError:
+			x[i] = format("%v: %v", e.s, e.err)
+		}
+	}
+	return fmt.Sprintf(f, x...)
+}
+
+func InvalidUTF8(name string) error {
+	return New("field %v contains invalid UTF-8", name)
+}
+
+func RequiredNotSet(name string) error {
+	return New("required field %v not set", name)
+}

vendor/google.golang.org/protobuf/internal/errors/is_go112.go

@@ -0,0 +1,39 @@
+// Copyright 2020 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build !go1.13
+
+package errors
+
+import "reflect"
+
+// Is is a copy of Go 1.13's errors.Is for use with older Go versions.
+func Is(err, target error) bool {
+	if target == nil {
+		return err == target
+	}
+
+	isComparable := reflect.TypeOf(target).Comparable()
+	for {
+		if isComparable && err == target {
+			return true
+		}
+		if x, ok := err.(interface{ Is(error) bool }); ok && x.Is(target) {
+			return true
+		}
+		if err = unwrap(err); err == nil {
+			return false
+		}
+	}
+}
+
+func unwrap(err error) error {
+	u, ok := err.(interface {
+		Unwrap() error
+	})
+	if !ok {
+		return nil
+	}
+	return u.Unwrap()
+}

vendor/google.golang.org/protobuf/internal/errors/is_go113.go

@@ -0,0 +1,12 @@
+// Copyright 2020 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build go1.13
+
+package errors
+
+import "errors"
+
+// Is is errors.Is.
+func Is(err, target error) bool { return errors.Is(err, target) }

vendor/google.golang.org/protobuf/internal/fieldnum/any_gen.go

@@ -0,0 +1,13 @@
+// Copyright 2019 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// Code generated by generate-protos. DO NOT EDIT.
+
+package fieldnum
+
+// Field numbers for google.protobuf.Any.
+const (
+	Any_TypeUrl = 1 // optional string
+	Any_Value   = 2 // optional bytes
+)

vendor/google.golang.org/protobuf/internal/fieldnum/api_gen.go

@@ -0,0 +1,35 @@
+// Copyright 2019 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// Code generated by generate-protos. DO NOT EDIT.
+
+package fieldnum
+
+// Field numbers for google.protobuf.Api.
+const (
+	Api_Name          = 1 // optional string
+	Api_Methods       = 2 // repeated google.protobuf.Method
+	Api_Options       = 3 // repeated google.protobuf.Option
+	Api_Version       = 4 // optional string
+	Api_SourceContext = 5 // optional google.protobuf.SourceContext
+	Api_Mixins        = 6 // repeated google.protobuf.Mixin
+	Api_Syntax        = 7 // optional google.protobuf.Syntax
+)
+
+// Field numbers for google.protobuf.Method.
+const (
+	Method_Name              = 1 // optional string
+	Method_RequestTypeUrl    = 2 // optional string
+	Method_RequestStreaming  = 3 // optional bool
+	Method_ResponseTypeUrl   = 4 // optional string
+	Method_ResponseStreaming = 5 // optional bool
+	Method_Options           = 6 // repeated google.protobuf.Option
+	Method_Syntax            = 7 // optional google.protobuf.Syntax
+)
+
+// Field numbers for google.protobuf.Mixin.
+const (
+	Mixin_Name = 1 // optional string
+	Mixin_Root = 2 // optional string
+)

vendor/google.golang.org/protobuf/internal/fieldnum/descriptor_gen.go

@@ -0,0 +1,240 @@
+// Copyright 2019 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// Code generated by generate-protos. DO NOT EDIT.
+
+package fieldnum
+
+// Field numbers for google.protobuf.FileDescriptorSet.
+const (
+	FileDescriptorSet_File = 1 // repeated google.protobuf.FileDescriptorProto
+)
+
+// Field numbers for google.protobuf.FileDescriptorProto.
+const (
+	FileDescriptorProto_Name             = 1  // optional string
+	FileDescriptorProto_Package          = 2  // optional string
+	FileDescriptorProto_Dependency       = 3  // repeated string
+	FileDescriptorProto_PublicDependency = 10 // repeated int32
+	FileDescriptorProto_WeakDependency   = 11 // repeated int32
+	FileDescriptorProto_MessageType      = 4  // repeated google.protobuf.DescriptorProto
+	FileDescriptorProto_EnumType         = 5  // repeated google.protobuf.EnumDescriptorProto
+	FileDescriptorProto_Service          = 6  // repeated google.protobuf.ServiceDescriptorProto
+	FileDescriptorProto_Extension        = 7  // repeated google.protobuf.FieldDescriptorProto
+	FileDescriptorProto_Options          = 8  // optional google.protobuf.FileOptions
+	FileDescriptorProto_SourceCodeInfo   = 9  // optional google.protobuf.SourceCodeInfo
+	FileDescriptorProto_Syntax           = 12 // optional string
+)
+
+// Field numbers for google.protobuf.DescriptorProto.
+const (
+	DescriptorProto_Name           = 1  // optional string
+	DescriptorProto_Field          = 2  // repeated google.protobuf.FieldDescriptorProto
+	DescriptorProto_Extension      = 6  // repeated google.protobuf.FieldDescriptorProto
+	DescriptorProto_NestedType     = 3  // repeated google.protobuf.DescriptorProto
+	DescriptorProto_EnumType       = 4  // repeated google.protobuf.EnumDescriptorProto
+	DescriptorProto_ExtensionRange = 5  // repeated google.protobuf.DescriptorProto.ExtensionRange
+	DescriptorProto_OneofDecl      = 8  // repeated google.protobuf.OneofDescriptorProto
+	DescriptorProto_Options        = 7  // optional google.protobuf.MessageOptions
+	DescriptorProto_ReservedRange  = 9  // repeated google.protobuf.DescriptorProto.ReservedRange
+	DescriptorProto_ReservedName   = 10 // repeated string
+)
+
+// Field numbers for google.protobuf.DescriptorProto.ExtensionRange.
+const (
+	DescriptorProto_ExtensionRange_Start   = 1 // optional int32
+	DescriptorProto_ExtensionRange_End     = 2 // optional int32
+	DescriptorProto_ExtensionRange_Options = 3 // optional google.protobuf.ExtensionRangeOptions
+)
+
+// Field numbers for google.protobuf.DescriptorProto.ReservedRange.
+const (
+	DescriptorProto_ReservedRange_Start = 1 // optional int32
+	DescriptorProto_ReservedRange_End   = 2 // optional int32
+)
+
+// Field numbers for google.protobuf.ExtensionRangeOptions.
+const (
+	ExtensionRangeOptions_UninterpretedOption = 999 // repeated google.protobuf.UninterpretedOption
+)
+
+// Field numbers for google.protobuf.FieldDescriptorProto.
+const (
+	FieldDescriptorProto_Name           = 1  // optional string
+	FieldDescriptorProto_Number         = 3  // optional int32
+	FieldDescriptorProto_Label          = 4  // optional google.protobuf.FieldDescriptorProto.Label
+	FieldDescriptorProto_Type           = 5  // optional google.protobuf.FieldDescriptorProto.Type
+	FieldDescriptorProto_TypeName       = 6  // optional string
+	FieldDescriptorProto_Extendee       = 2  // optional string
+	FieldDescriptorProto_DefaultValue   = 7  // optional string
+	FieldDescriptorProto_OneofIndex     = 9  // optional int32
+	FieldDescriptorProto_JsonName       = 10 // optional string
+	FieldDescriptorProto_Options        = 8  // optional google.protobuf.FieldOptions
+	FieldDescriptorProto_Proto3Optional = 17 // optional bool
+)
+
+// Field numbers for google.protobuf.OneofDescriptorProto.
+const (
+	OneofDescriptorProto_Name    = 1 // optional string
+	OneofDescriptorProto_Options = 2 // optional google.protobuf.OneofOptions
+)
+
+// Field numbers for google.protobuf.EnumDescriptorProto.
+const (
+	EnumDescriptorProto_Name          = 1 // optional string
+	EnumDescriptorProto_Value         = 2 // repeated google.protobuf.EnumValueDescriptorProto
+	EnumDescriptorProto_Options       = 3 // optional google.protobuf.EnumOptions
+	EnumDescriptorProto_ReservedRange = 4 // repeated google.protobuf.EnumDescriptorProto.EnumReservedRange
+	EnumDescriptorProto_ReservedName  = 5 // repeated string
+)
+
+// Field numbers for google.protobuf.EnumDescriptorProto.EnumReservedRange.
+const (
+	EnumDescriptorProto_EnumReservedRange_Start = 1 // optional int32
+	EnumDescriptorProto_EnumReservedRange_End   = 2 // optional int32
+)
+
+// Field numbers for google.protobuf.EnumValueDescriptorProto.
+const (
+	EnumValueDescriptorProto_Name    = 1 // optional string
+	EnumValueDescriptorProto_Number  = 2 // optional int32
+	EnumValueDescriptorProto_Options = 3 // optional google.protobuf.EnumValueOptions
+)
+
+// Field numbers for google.protobuf.ServiceDescriptorProto.
+const (
+	ServiceDescriptorProto_Name    = 1 // optional string
+	ServiceDescriptorProto_Method  = 2 // repeated google.protobuf.MethodDescriptorProto
+	ServiceDescriptorProto_Options = 3 // optional google.protobuf.ServiceOptions
+)
+
+// Field numbers for google.protobuf.MethodDescriptorProto.
+const (
+	MethodDescriptorProto_Name            = 1 // optional string
+	MethodDescriptorProto_InputType       = 2 // optional string
+	MethodDescriptorProto_OutputType      = 3 // optional string
+	MethodDescriptorProto_Options         = 4 // optional google.protobuf.MethodOptions
+	MethodDescriptorProto_ClientStreaming = 5 // optional bool
+	MethodDescriptorProto_ServerStreaming = 6 // optional bool
+)
+
+// Field numbers for google.protobuf.FileOptions.
+const (
+	FileOptions_JavaPackage               = 1   // optional string
+	FileOptions_JavaOuterClassname        = 8   // optional string
+	FileOptions_JavaMultipleFiles         = 10  // optional bool
+	FileOptions_JavaGenerateEqualsAndHash = 20  // optional bool
+	FileOptions_JavaStringCheckUtf8       = 27  // optional bool
+	FileOptions_OptimizeFor               = 9   // optional google.protobuf.FileOptions.OptimizeMode
+	FileOptions_GoPackage                 = 11  // optional string
+	FileOptions_CcGenericServices         = 16  // optional bool
+	FileOptions_JavaGenericServices       = 17  // optional bool
+	FileOptions_PyGenericServices         = 18  // optional bool
+	FileOptions_PhpGenericServices        = 42  // optional bool
+	FileOptions_Deprecated                = 23  // optional bool
+	FileOptions_CcEnableArenas            = 31  // optional bool
+	FileOptions_ObjcClassPrefix           = 36  // optional string
+	FileOptions_CsharpNamespace           = 37  // optional string
+	FileOptions_SwiftPrefix               = 39  // optional string
+	FileOptions_PhpClassPrefix            = 40  // optional string
+	FileOptions_PhpNamespace              = 41  // optional string
+	FileOptions_PhpMetadataNamespace      = 44  // optional string
+	FileOptions_RubyPackage               = 45  // optional string
+	FileOptions_UninterpretedOption       = 999 // repeated google.protobuf.UninterpretedOption
+)
+
+// Field numbers for google.protobuf.MessageOptions.
+const (
+	MessageOptions_MessageSetWireFormat         = 1   // optional bool
+	MessageOptions_NoStandardDescriptorAccessor = 2   // optional bool
+	MessageOptions_Deprecated                   = 3   // optional bool
+	MessageOptions_MapEntry                     = 7   // optional bool
+	MessageOptions_UninterpretedOption          = 999 // repeated google.protobuf.UninterpretedOption
+)
+
+// Field numbers for google.protobuf.FieldOptions.
+const (
+	FieldOptions_Ctype               = 1   // optional google.protobuf.FieldOptions.CType
+	FieldOptions_Packed              = 2   // optional bool
+	FieldOptions_Jstype              = 6   // optional google.protobuf.FieldOptions.JSType
+	FieldOptions_Lazy                = 5   // optional bool
+	FieldOptions_Deprecated          = 3   // optional bool
+	FieldOptions_Weak                = 10  // optional bool
+	FieldOptions_UninterpretedOption = 999 // repeated google.protobuf.UninterpretedOption
+)
+
+// Field numbers for google.protobuf.OneofOptions.
+const (
+	OneofOptions_UninterpretedOption = 999 // repeated google.protobuf.UninterpretedOption
+)
+
+// Field numbers for google.protobuf.EnumOptions.
+const (
+	EnumOptions_AllowAlias          = 2   // optional bool
+	EnumOptions_Deprecated          = 3   // optional bool
+	EnumOptions_UninterpretedOption = 999 // repeated google.protobuf.UninterpretedOption
+)
+
+// Field numbers for google.protobuf.EnumValueOptions.
+const (
+	EnumValueOptions_Deprecated          = 1   // optional bool
+	EnumValueOptions_UninterpretedOption = 999 // repeated google.protobuf.UninterpretedOption
+)
+
+// Field numbers for google.protobuf.ServiceOptions.
+const (
+	ServiceOptions_Deprecated          = 33  // optional bool
+	ServiceOptions_UninterpretedOption = 999 // repeated google.protobuf.UninterpretedOption
+)
+
+// Field numbers for google.protobuf.MethodOptions.
+const (
+	MethodOptions_Deprecated          = 33  // optional bool
+	MethodOptions_IdempotencyLevel    = 34  // optional google.protobuf.MethodOptions.IdempotencyLevel
+	MethodOptions_UninterpretedOption = 999 // repeated google.protobuf.UninterpretedOption
+)
+
+// Field numbers for google.protobuf.UninterpretedOption.
+const (
+	UninterpretedOption_Name             = 2 // repeated google.protobuf.UninterpretedOption.NamePart
+	UninterpretedOption_IdentifierValue  = 3 // optional string
+	UninterpretedOption_PositiveIntValue = 4 // optional uint64
+	UninterpretedOption_NegativeIntValue = 5 // optional int64
+	UninterpretedOption_DoubleValue      = 6 // optional double
+	UninterpretedOption_StringValue      = 7 // optional bytes
+	UninterpretedOption_AggregateValue   = 8 // optional string
+)
+
+// Field numbers for google.protobuf.UninterpretedOption.NamePart.
+const (
+	UninterpretedOption_NamePart_NamePart    = 1 // required string
+	UninterpretedOption_NamePart_IsExtension = 2 // required bool
+)
+
+// Field numbers for google.protobuf.SourceCodeInfo.
+const (
+	SourceCodeInfo_Location = 1 // repeated google.protobuf.SourceCodeInfo.Location
+)
+
+// Field numbers for google.protobuf.SourceCodeInfo.Location.
+const (
+	SourceCodeInfo_Location_Path                    = 1 // repeated int32
+	SourceCodeInfo_Location_Span                    = 2 // repeated int32
+	SourceCodeInfo_Location_LeadingComments         = 3 // optional string
+	SourceCodeInfo_Location_TrailingComments        = 4 // optional string
+	SourceCodeInfo_Location_LeadingDetachedComments = 6 // repeated string
+)
+
+// Field numbers for google.protobuf.GeneratedCodeInfo.
+const (
+	GeneratedCodeInfo_Annotation = 1 // repeated google.protobuf.GeneratedCodeInfo.Annotation
+)
+
+// Field numbers for google.protobuf.GeneratedCodeInfo.Annotation.
+const (
+	GeneratedCodeInfo_Annotation_Path       = 1 // repeated int32
+	GeneratedCodeInfo_Annotation_SourceFile = 2 // optional string
+	GeneratedCodeInfo_Annotation_Begin      = 3 // optional int32
+	GeneratedCodeInfo_Annotation_End        = 4 // optional int32
+)

vendor/google.golang.org/protobuf/internal/fieldnum/doc.go

@@ -0,0 +1,7 @@
+// Copyright 2019 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// Package fieldnum contains constants for field numbers of fields in messages
+// declared in descriptor.proto and any of the well-known types.
+package fieldnum

vendor/google.golang.org/protobuf/internal/fieldnum/duration_gen.go

@@ -0,0 +1,13 @@
+// Copyright 2019 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// Code generated by generate-protos. DO NOT EDIT.
+
+package fieldnum
+
+// Field numbers for google.protobuf.Duration.
+const (
+	Duration_Seconds = 1 // optional int64
+	Duration_Nanos   = 2 // optional int32
+)

vendor/google.golang.org/protobuf/internal/fieldnum/empty_gen.go

@@ -0,0 +1,10 @@
+// Copyright 2019 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// Code generated by generate-protos. DO NOT EDIT.
+
+package fieldnum
+
+// Field numbers for google.protobuf.Empty.
+const ()

vendor/google.golang.org/protobuf/internal/fieldnum/field_mask_gen.go

@@ -0,0 +1,12 @@
+// Copyright 2019 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// Code generated by generate-protos. DO NOT EDIT.
+
+package fieldnum
+
+// Field numbers for google.protobuf.FieldMask.
+const (
+	FieldMask_Paths = 1 // repeated string
+)

vendor/google.golang.org/protobuf/internal/fieldnum/source_context_gen.go

@@ -0,0 +1,12 @@
+// Copyright 2019 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// Code generated by generate-protos. DO NOT EDIT.
+
+package fieldnum
+
+// Field numbers for google.protobuf.SourceContext.
+const (
+	SourceContext_FileName = 1 // optional string
+)

vendor/google.golang.org/protobuf/internal/fieldnum/struct_gen.go

@@ -0,0 +1,33 @@
+// Copyright 2019 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// Code generated by generate-protos. DO NOT EDIT.
+
+package fieldnum
+
+// Field numbers for google.protobuf.Struct.
+const (
+	Struct_Fields = 1 // repeated google.protobuf.Struct.FieldsEntry
+)
+
+// Field numbers for google.protobuf.Struct.FieldsEntry.
+const (
+	Struct_FieldsEntry_Key   = 1 // optional string
+	Struct_FieldsEntry_Value = 2 // optional google.protobuf.Value
+)
+
+// Field numbers for google.protobuf.Value.
+const (
+	Value_NullValue   = 1 // optional google.protobuf.NullValue
+	Value_NumberValue = 2 // optional double
+	Value_StringValue = 3 // optional string
+	Value_BoolValue   = 4 // optional bool
+	Value_StructValue = 5 // optional google.protobuf.Struct
+	Value_ListValue   = 6 // optional google.protobuf.ListValue
+)
+
+// Field numbers for google.protobuf.ListValue.
+const (
+	ListValue_Values = 1 // repeated google.protobuf.Value
+)

vendor/google.golang.org/protobuf/internal/fieldnum/timestamp_gen.go

@@ -0,0 +1,13 @@
+// Copyright 2019 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// Code generated by generate-protos. DO NOT EDIT.
+
+package fieldnum
+
+// Field numbers for google.protobuf.Timestamp.
+const (
+	Timestamp_Seconds = 1 // optional int64
+	Timestamp_Nanos   = 2 // optional int32
+)

vendor/google.golang.org/protobuf/internal/fieldnum/type_gen.go

@@ -0,0 +1,53 @@
+// Copyright 2019 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// Code generated by generate-protos. DO NOT EDIT.
+
+package fieldnum
+
+// Field numbers for google.protobuf.Type.
+const (
+	Type_Name          = 1 // optional string
+	Type_Fields        = 2 // repeated google.protobuf.Field
+	Type_Oneofs        = 3 // repeated string
+	Type_Options       = 4 // repeated google.protobuf.Option
+	Type_SourceContext = 5 // optional google.protobuf.SourceContext
+	Type_Syntax        = 6 // optional google.protobuf.Syntax
+)
+
+// Field numbers for google.protobuf.Field.
+const (
+	Field_Kind         = 1  // optional google.protobuf.Field.Kind
+	Field_Cardinality  = 2  // optional google.protobuf.Field.Cardinality
+	Field_Number       = 3  // optional int32
+	Field_Name         = 4  // optional string
+	Field_TypeUrl      = 6  // optional string
+	Field_OneofIndex   = 7  // optional int32
+	Field_Packed       = 8  // optional bool
+	Field_Options      = 9  // repeated google.protobuf.Option
+	Field_JsonName     = 10 // optional string
+	Field_DefaultValue = 11 // optional string
+)
+
+// Field numbers for google.protobuf.Enum.
+const (
+	Enum_Name          = 1 // optional string
+	Enum_Enumvalue     = 2 // repeated google.protobuf.EnumValue
+	Enum_Options       = 3 // repeated google.protobuf.Option
+	Enum_SourceContext = 4 // optional google.protobuf.SourceContext
+	Enum_Syntax        = 5 // optional google.protobuf.Syntax
+)
+
+// Field numbers for google.protobuf.EnumValue.
+const (
+	EnumValue_Name    = 1 // optional string
+	EnumValue_Number  = 2 // optional int32
+	EnumValue_Options = 3 // repeated google.protobuf.Option
+)
+
+// Field numbers for google.protobuf.Option.
+const (
+	Option_Name  = 1 // optional string
+	Option_Value = 2 // optional google.protobuf.Any
+)

vendor/google.golang.org/protobuf/internal/fieldnum/wrappers_gen.go

@@ -0,0 +1,52 @@
+// Copyright 2019 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// Code generated by generate-protos. DO NOT EDIT.
+
+package fieldnum
+
+// Field numbers for google.protobuf.DoubleValue.
+const (
+	DoubleValue_Value = 1 // optional double
+)
+
+// Field numbers for google.protobuf.FloatValue.
+const (
+	FloatValue_Value = 1 // optional float
+)
+
+// Field numbers for google.protobuf.Int64Value.
+const (
+	Int64Value_Value = 1 // optional int64
+)
+
+// Field numbers for google.protobuf.UInt64Value.
+const (
+	UInt64Value_Value = 1 // optional uint64
+)
+
+// Field numbers for google.protobuf.Int32Value.
+const (
+	Int32Value_Value = 1 // optional int32
+)
+
+// Field numbers for google.protobuf.UInt32Value.
+const (
+	UInt32Value_Value = 1 // optional uint32
+)
+
+// Field numbers for google.protobuf.BoolValue.
+const (
+	BoolValue_Value = 1 // optional bool
+)
+
+// Field numbers for google.protobuf.StringValue.
+const (
+	StringValue_Value = 1 // optional string
+)
+
+// Field numbers for google.protobuf.BytesValue.
+const (
+	BytesValue_Value = 1 // optional bytes
+)

vendor/google.golang.org/protobuf/internal/fieldsort/fieldsort.go

@@ -0,0 +1,40 @@
+// Copyright 2019 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// Package fieldsort defines an ordering of fields.
+//
+// The ordering defined by this package matches the historic behavior of the proto
+// package, placing extensions first and oneofs last.
+//
+// There is no guarantee about stability of the wire encoding, and users should not
+// depend on the order defined in this package as it is subject to change without
+// notice.
+package fieldsort
+
+import (
+	"google.golang.org/protobuf/reflect/protoreflect"
+)
+
+// Less returns true if field a comes before field j in ordered wire marshal output.
+func Less(a, b protoreflect.FieldDescriptor) bool {
+	ea := a.IsExtension()
+	eb := b.IsExtension()
+	oa := a.ContainingOneof()
+	ob := b.ContainingOneof()
+	switch {
+	case ea != eb:
+		return ea
+	case oa != nil && ob != nil:
+		if oa == ob {
+			return a.Number() < b.Number()
+		}
+		return oa.Index() < ob.Index()
+	case oa != nil && !oa.IsSynthetic():
+		return false
+	case ob != nil && !ob.IsSynthetic():
+		return true
+	default:
+		return a.Number() < b.Number()
+	}
+}

vendor/google.golang.org/protobuf/internal/filedesc/build.go

@@ -0,0 +1,155 @@
+// Copyright 2019 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// Package filedesc provides functionality for constructing descriptors.
+package filedesc
+
+import (
+	"google.golang.org/protobuf/encoding/protowire"
+	"google.golang.org/protobuf/internal/fieldnum"
+	"google.golang.org/protobuf/reflect/protoreflect"
+	pref "google.golang.org/protobuf/reflect/protoreflect"
+	preg "google.golang.org/protobuf/reflect/protoregistry"
+)
+
+// Builder construct a protoreflect.FileDescriptor from the raw descriptor.
+type Builder struct {
+	// GoPackagePath is the Go package path that is invoking this builder.
+	GoPackagePath string
+
+	// RawDescriptor is the wire-encoded bytes of FileDescriptorProto
+	// and must be populated.
+	RawDescriptor []byte
+
+	// NumEnums is the total number of enums declared in the file.
+	NumEnums int32
+	// NumMessages is the total number of messages declared in the file.
+	// It includes the implicit message declarations for map entries.
+	NumMessages int32
+	// NumExtensions is the total number of extensions declared in the file.
+	NumExtensions int32
+	// NumServices is the total number of services declared in the file.
+	NumServices int32
+
+	// TypeResolver resolves extension field types for descriptor options.
+	// If nil, it uses protoregistry.GlobalTypes.
+	TypeResolver interface {
+		preg.ExtensionTypeResolver
+	}
+
+	// FileRegistry is use to lookup file, enum, and message dependencies.
+	// Once constructed, the file descriptor is registered here.
+	// If nil, it uses protoregistry.GlobalFiles.
+	FileRegistry interface {
+		FindFileByPath(string) (protoreflect.FileDescriptor, error)
+		FindDescriptorByName(pref.FullName) (pref.Descriptor, error)
+		RegisterFile(pref.FileDescriptor) error
+	}
+}
+
+// resolverByIndex is an interface Builder.FileRegistry may implement.
+// If so, it permits looking up an enum or message dependency based on the
+// sub-list and element index into filetype.Builder.DependencyIndexes.
+type resolverByIndex interface {
+	FindEnumByIndex(int32, int32, []Enum, []Message) pref.EnumDescriptor
+	FindMessageByIndex(int32, int32, []Enum, []Message) pref.MessageDescriptor
+}
+
+// Indexes of each sub-list in filetype.Builder.DependencyIndexes.
+const (
+	listFieldDeps int32 = iota
+	listExtTargets
+	listExtDeps
+	listMethInDeps
+	listMethOutDeps
+)
+
+// Out is the output of the Builder.
+type Out struct {
+	File pref.FileDescriptor
+
+	// Enums is all enum descriptors in "flattened ordering".
+	Enums []Enum
+	// Messages is all message descriptors in "flattened ordering".
+	// It includes the implicit message declarations for map entries.
+	Messages []Message
+	// Extensions is all extension descriptors in "flattened ordering".
+	Extensions []Extension
+	// Service is all service descriptors in "flattened ordering".
+	Services []Service
+}
+
+// Build constructs a FileDescriptor given the parameters set in Builder.
+// It assumes that the inputs are well-formed and panics if any inconsistencies
+// are encountered.
+//
+// If NumEnums+NumMessages+NumExtensions+NumServices is zero,
+// then Build automatically derives them from the raw descriptor.
+func (db Builder) Build() (out Out) {
+	// Populate the counts if uninitialized.
+	if db.NumEnums+db.NumMessages+db.NumExtensions+db.NumServices == 0 {
+		db.unmarshalCounts(db.RawDescriptor, true)
+	}
+
+	// Initialize resolvers and registries if unpopulated.
+	if db.TypeResolver == nil {
+		db.TypeResolver = preg.GlobalTypes
+	}
+	if db.FileRegistry == nil {
+		db.FileRegistry = preg.GlobalFiles
+	}
+
+	fd := newRawFile(db)
+	out.File = fd
+	out.Enums = fd.allEnums
+	out.Messages = fd.allMessages
+	out.Extensions = fd.allExtensions
+	out.Services = fd.allServices
+
+	if err := db.FileRegistry.RegisterFile(fd); err != nil {
+		panic(err)
+	}
+	return out
+}
+
+// unmarshalCounts counts the number of enum, message, extension, and service
+// declarations in the raw message, which is either a FileDescriptorProto
+// or a MessageDescriptorProto depending on whether isFile is set.
+func (db *Builder) unmarshalCounts(b []byte, isFile bool) {
+	for len(b) > 0 {
+		num, typ, n := protowire.ConsumeTag(b)
+		b = b[n:]
+		switch typ {
+		case protowire.BytesType:
+			v, m := protowire.ConsumeBytes(b)
+			b = b[m:]
+			if isFile {
+				switch num {
+				case fieldnum.FileDescriptorProto_EnumType:
+					db.NumEnums++
+				case fieldnum.FileDescriptorProto_MessageType:
+					db.unmarshalCounts(v, false)
+					db.NumMessages++
+				case fieldnum.FileDescriptorProto_Extension:
+					db.NumExtensions++
+				case fieldnum.FileDescriptorProto_Service:
+					db.NumServices++
+				}
+			} else {
+				switch num {
+				case fieldnum.DescriptorProto_EnumType:
+					db.NumEnums++
+				case fieldnum.DescriptorProto_NestedType:
+					db.unmarshalCounts(v, false)
+					db.NumMessages++
+				case fieldnum.DescriptorProto_Extension:
+					db.NumExtensions++
+				}
+			}
+		default:
+			m := protowire.ConsumeFieldValue(num, typ, b)
+			b = b[m:]
+		}
+	}
+}

vendor/google.golang.org/protobuf/internal/filedesc/desc.go

@@ -0,0 +1,613 @@
+// Copyright 2019 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package filedesc
+
+import (
+	"bytes"
+	"fmt"
+	"sync"
+	"sync/atomic"
+
+	"google.golang.org/protobuf/internal/descfmt"
+	"google.golang.org/protobuf/internal/descopts"
+	"google.golang.org/protobuf/internal/encoding/defval"
+	"google.golang.org/protobuf/internal/pragma"
+	"google.golang.org/protobuf/internal/strs"
+	pref "google.golang.org/protobuf/reflect/protoreflect"
+	"google.golang.org/protobuf/reflect/protoregistry"
+)
+
+// The types in this file may have a suffix:
+//	• L0: Contains fields common to all descriptors (except File) and
+//	must be initialized up front.
+//	• L1: Contains fields specific to a descriptor and
+//	must be initialized up front.
+//	• L2: Contains fields that are lazily initialized when constructing
+//	from the raw file descriptor. When constructing as a literal, the L2
+//	fields must be initialized up front.
+//
+// The types are exported so that packages like reflect/protodesc can
+// directly construct descriptors.
+
+type (
+	File struct {
+		fileRaw
+		L1 FileL1
+
+		once uint32     // atomically set if L2 is valid
+		mu   sync.Mutex // protects L2
+		L2   *FileL2
+	}
+	FileL1 struct {
+		Syntax  pref.Syntax
+		Path    string
+		Package pref.FullName
+
+		Enums      Enums
+		Messages   Messages
+		Extensions Extensions
+		Services   Services
+	}
+	FileL2 struct {
+		Options   func() pref.ProtoMessage
+		Imports   FileImports
+		Locations SourceLocations
+	}
+)
+
+func (fd *File) ParentFile() pref.FileDescriptor { return fd }
+func (fd *File) Parent() pref.Descriptor         { return nil }
+func (fd *File) Index() int                      { return 0 }
+func (fd *File) Syntax() pref.Syntax             { return fd.L1.Syntax }
+func (fd *File) Name() pref.Name                 { return fd.L1.Package.Name() }
+func (fd *File) FullName() pref.FullName         { return fd.L1.Package }
+func (fd *File) IsPlaceholder() bool             { return false }
+func (fd *File) Options() pref.ProtoMessage {
+	if f := fd.lazyInit().Options; f != nil {
+		return f()
+	}
+	return descopts.File
+}
+func (fd *File) Path() string                          { return fd.L1.Path }
+func (fd *File) Package() pref.FullName                { return fd.L1.Package }
+func (fd *File) Imports() pref.FileImports             { return &fd.lazyInit().Imports }
+func (fd *File) Enums() pref.EnumDescriptors           { return &fd.L1.Enums }
+func (fd *File) Messages() pref.MessageDescriptors     { return &fd.L1.Messages }
+func (fd *File) Extensions() pref.ExtensionDescriptors { return &fd.L1.Extensions }
+func (fd *File) Services() pref.ServiceDescriptors     { return &fd.L1.Services }
+func (fd *File) SourceLocations() pref.SourceLocations { return &fd.lazyInit().Locations }
+func (fd *File) Format(s fmt.State, r rune)            { descfmt.FormatDesc(s, r, fd) }
+func (fd *File) ProtoType(pref.FileDescriptor)         {}
+func (fd *File) ProtoInternal(pragma.DoNotImplement)   {}
+
+func (fd *File) lazyInit() *FileL2 {
+	if atomic.LoadUint32(&fd.once) == 0 {
+		fd.lazyInitOnce()
+	}
+	return fd.L2
+}
+
+func (fd *File) lazyInitOnce() {
+	fd.mu.Lock()
+	if fd.L2 == nil {
+		fd.lazyRawInit() // recursively initializes all L2 structures
+	}
+	atomic.StoreUint32(&fd.once, 1)
+	fd.mu.Unlock()
+}
+
+// ProtoLegacyRawDesc is a pseudo-internal API for allowing the v1 code
+// to be able to retrieve the raw descriptor.
+//
+// WARNING: This method is exempt from the compatibility promise and may be
+// removed in the future without warning.
+func (fd *File) ProtoLegacyRawDesc() []byte {
+	return fd.builder.RawDescriptor
+}
+
+// GoPackagePath is a pseudo-internal API for determining the Go package path
+// that this file descriptor is declared in.
+//
+// WARNING: This method is exempt from the compatibility promise and may be
+// removed in the future without warning.
+func (fd *File) GoPackagePath() string {
+	return fd.builder.GoPackagePath
+}
+
+type (
+	Enum struct {
+		Base
+		L1 EnumL1
+		L2 *EnumL2 // protected by fileDesc.once
+	}
+	EnumL1 struct {
+		eagerValues bool // controls whether EnumL2.Values is already populated
+	}
+	EnumL2 struct {
+		Options        func() pref.ProtoMessage
+		Values         EnumValues
+		ReservedNames  Names
+		ReservedRanges EnumRanges
+	}
+
+	EnumValue struct {
+		Base
+		L1 EnumValueL1
+	}
+	EnumValueL1 struct {
+		Options func() pref.ProtoMessage
+		Number  pref.EnumNumber
+	}
+)
+
+func (ed *Enum) Options() pref.ProtoMessage {
+	if f := ed.lazyInit().Options; f != nil {
+		return f()
+	}
+	return descopts.Enum
+}
+func (ed *Enum) Values() pref.EnumValueDescriptors {
+	if ed.L1.eagerValues {
+		return &ed.L2.Values
+	}
+	return &ed.lazyInit().Values
+}
+func (ed *Enum) ReservedNames() pref.Names       { return &ed.lazyInit().ReservedNames }
+func (ed *Enum) ReservedRanges() pref.EnumRanges { return &ed.lazyInit().ReservedRanges }
+func (ed *Enum) Format(s fmt.State, r rune)      { descfmt.FormatDesc(s, r, ed) }
+func (ed *Enum) ProtoType(pref.EnumDescriptor)   {}
+func (ed *Enum) lazyInit() *EnumL2 {
+	ed.L0.ParentFile.lazyInit() // implicitly initializes L2
+	return ed.L2
+}
+
+func (ed *EnumValue) Options() pref.ProtoMessage {
+	if f := ed.L1.Options; f != nil {
+		return f()
+	}
+	return descopts.EnumValue
+}
+func (ed *EnumValue) Number() pref.EnumNumber            { return ed.L1.Number }
+func (ed *EnumValue) Format(s fmt.State, r rune)         { descfmt.FormatDesc(s, r, ed) }
+func (ed *EnumValue) ProtoType(pref.EnumValueDescriptor) {}
+
+type (
+	Message struct {
+		Base
+		L1 MessageL1
+		L2 *MessageL2 // protected by fileDesc.once
+	}
+	MessageL1 struct {
+		Enums        Enums
+		Messages     Messages
+		Extensions   Extensions
+		IsMapEntry   bool // promoted from google.protobuf.MessageOptions
+		IsMessageSet bool // promoted from google.protobuf.MessageOptions
+	}
+	MessageL2 struct {
+		Options               func() pref.ProtoMessage
+		Fields                Fields
+		Oneofs                Oneofs
+		ReservedNames         Names
+		ReservedRanges        FieldRanges
+		RequiredNumbers       FieldNumbers // must be consistent with Fields.Cardinality
+		ExtensionRanges       FieldRanges
+		ExtensionRangeOptions []func() pref.ProtoMessage // must be same length as ExtensionRanges
+	}
+
+	Field struct {
+		Base
+		L1 FieldL1
+	}
+	FieldL1 struct {
+		Options          func() pref.ProtoMessage
+		Number           pref.FieldNumber
+		Cardinality      pref.Cardinality // must be consistent with Message.RequiredNumbers
+		Kind             pref.Kind
+		JSONName         jsonName
+		IsProto3Optional bool // promoted from google.protobuf.FieldDescriptorProto
+		IsWeak           bool // promoted from google.protobuf.FieldOptions
+		HasPacked        bool // promoted from google.protobuf.FieldOptions
+		IsPacked         bool // promoted from google.protobuf.FieldOptions
+		HasEnforceUTF8   bool // promoted from google.protobuf.FieldOptions
+		EnforceUTF8      bool // promoted from google.protobuf.FieldOptions
+		Default          defaultValue
+		ContainingOneof  pref.OneofDescriptor // must be consistent with Message.Oneofs.Fields
+		Enum             pref.EnumDescriptor
+		Message          pref.MessageDescriptor
+	}
+
+	Oneof struct {
+		Base
+		L1 OneofL1
+	}
+	OneofL1 struct {
+		Options func() pref.ProtoMessage
+		Fields  OneofFields // must be consistent with Message.Fields.ContainingOneof
+	}
+)
+
+func (md *Message) Options() pref.ProtoMessage {
+	if f := md.lazyInit().Options; f != nil {
+		return f()
+	}
+	return descopts.Message
+}
+func (md *Message) IsMapEntry() bool                   { return md.L1.IsMapEntry }
+func (md *Message) Fields() pref.FieldDescriptors      { return &md.lazyInit().Fields }
+func (md *Message) Oneofs() pref.OneofDescriptors      { return &md.lazyInit().Oneofs }
+func (md *Message) ReservedNames() pref.Names          { return &md.lazyInit().ReservedNames }
+func (md *Message) ReservedRanges() pref.FieldRanges   { return &md.lazyInit().ReservedRanges }
+func (md *Message) RequiredNumbers() pref.FieldNumbers { return &md.lazyInit().RequiredNumbers }
+func (md *Message) ExtensionRanges() pref.FieldRanges  { return &md.lazyInit().ExtensionRanges }
+func (md *Message) ExtensionRangeOptions(i int) pref.ProtoMessage {
+	if f := md.lazyInit().ExtensionRangeOptions[i]; f != nil {
+		return f()
+	}
+	return descopts.ExtensionRange
+}
+func (md *Message) Enums() pref.EnumDescriptors           { return &md.L1.Enums }
+func (md *Message) Messages() pref.MessageDescriptors     { return &md.L1.Messages }
+func (md *Message) Extensions() pref.ExtensionDescriptors { return &md.L1.Extensions }
+func (md *Message) ProtoType(pref.MessageDescriptor)      {}
+func (md *Message) Format(s fmt.State, r rune)            { descfmt.FormatDesc(s, r, md) }
+func (md *Message) lazyInit() *MessageL2 {
+	md.L0.ParentFile.lazyInit() // implicitly initializes L2
+	return md.L2
+}
+
+// IsMessageSet is a pseudo-internal API for checking whether a message
+// should serialize in the proto1 message format.
+//
+// WARNING: This method is exempt from the compatibility promise and may be
+// removed in the future without warning.
+func (md *Message) IsMessageSet() bool {
+	return md.L1.IsMessageSet
+}
+
+func (fd *Field) Options() pref.ProtoMessage {
+	if f := fd.L1.Options; f != nil {
+		return f()
+	}
+	return descopts.Field
+}
+func (fd *Field) Number() pref.FieldNumber      { return fd.L1.Number }
+func (fd *Field) Cardinality() pref.Cardinality { return fd.L1.Cardinality }
+func (fd *Field) Kind() pref.Kind               { return fd.L1.Kind }
+func (fd *Field) HasJSONName() bool             { return fd.L1.JSONName.has }
+func (fd *Field) JSONName() string              { return fd.L1.JSONName.get(fd) }
+func (fd *Field) HasPresence() bool {
+	return fd.L1.Cardinality != pref.Repeated && (fd.L0.ParentFile.L1.Syntax == pref.Proto2 || fd.L1.Message != nil || fd.L1.ContainingOneof != nil)
+}
+func (fd *Field) HasOptionalKeyword() bool {
+	return (fd.L0.ParentFile.L1.Syntax == pref.Proto2 && fd.L1.Cardinality == pref.Optional && fd.L1.ContainingOneof == nil) || fd.L1.IsProto3Optional
+}
+func (fd *Field) IsPacked() bool {
+	if !fd.L1.HasPacked && fd.L0.ParentFile.L1.Syntax != pref.Proto2 && fd.L1.Cardinality == pref.Repeated {
+		switch fd.L1.Kind {
+		case pref.StringKind, pref.BytesKind, pref.MessageKind, pref.GroupKind:
+		default:
+			return true
+		}
+	}
+	return fd.L1.IsPacked
+}
+func (fd *Field) IsExtension() bool { return false }
+func (fd *Field) IsWeak() bool      { return fd.L1.IsWeak }
+func (fd *Field) IsList() bool      { return fd.Cardinality() == pref.Repeated && !fd.IsMap() }
+func (fd *Field) IsMap() bool       { return fd.Message() != nil && fd.Message().IsMapEntry() }
+func (fd *Field) MapKey() pref.FieldDescriptor {
+	if !fd.IsMap() {
+		return nil
+	}
+	return fd.Message().Fields().ByNumber(1)
+}
+func (fd *Field) MapValue() pref.FieldDescriptor {
+	if !fd.IsMap() {
+		return nil
+	}
+	return fd.Message().Fields().ByNumber(2)
+}
+func (fd *Field) HasDefault() bool                           { return fd.L1.Default.has }
+func (fd *Field) Default() pref.Value                        { return fd.L1.Default.get(fd) }
+func (fd *Field) DefaultEnumValue() pref.EnumValueDescriptor { return fd.L1.Default.enum }
+func (fd *Field) ContainingOneof() pref.OneofDescriptor      { return fd.L1.ContainingOneof }
+func (fd *Field) ContainingMessage() pref.MessageDescriptor {
+	return fd.L0.Parent.(pref.MessageDescriptor)
+}
+func (fd *Field) Enum() pref.EnumDescriptor {
+	return fd.L1.Enum
+}
+func (fd *Field) Message() pref.MessageDescriptor {
+	if fd.L1.IsWeak {
+		if d, _ := protoregistry.GlobalFiles.FindDescriptorByName(fd.L1.Message.FullName()); d != nil {
+			return d.(pref.MessageDescriptor)
+		}
+	}
+	return fd.L1.Message
+}
+func (fd *Field) Format(s fmt.State, r rune)     { descfmt.FormatDesc(s, r, fd) }
+func (fd *Field) ProtoType(pref.FieldDescriptor) {}
+
+// EnforceUTF8 is a pseudo-internal API to determine whether to enforce UTF-8
+// validation for the string field. This exists for Google-internal use only
+// since proto3 did not enforce UTF-8 validity prior to the open-source release.
+// If this method does not exist, the default is to enforce valid UTF-8.
+//
+// WARNING: This method is exempt from the compatibility promise and may be
+// removed in the future without warning.
+func (fd *Field) EnforceUTF8() bool {
+	if fd.L1.HasEnforceUTF8 {
+		return fd.L1.EnforceUTF8
+	}
+	return fd.L0.ParentFile.L1.Syntax == pref.Proto3
+}
+
+func (od *Oneof) IsSynthetic() bool {
+	return od.L0.ParentFile.L1.Syntax == pref.Proto3 && len(od.L1.Fields.List) == 1 && od.L1.Fields.List[0].HasOptionalKeyword()
+}
+func (od *Oneof) Options() pref.ProtoMessage {
+	if f := od.L1.Options; f != nil {
+		return f()
+	}
+	return descopts.Oneof
+}
+func (od *Oneof) Fields() pref.FieldDescriptors  { return &od.L1.Fields }
+func (od *Oneof) Format(s fmt.State, r rune)     { descfmt.FormatDesc(s, r, od) }
+func (od *Oneof) ProtoType(pref.OneofDescriptor) {}
+
+type (
+	Extension struct {
+		Base
+		L1 ExtensionL1
+		L2 *ExtensionL2 // protected by fileDesc.once
+	}
+	ExtensionL1 struct {
+		Number      pref.FieldNumber
+		Extendee    pref.MessageDescriptor
+		Cardinality pref.Cardinality
+		Kind        pref.Kind
+	}
+	ExtensionL2 struct {
+		Options          func() pref.ProtoMessage
+		JSONName         jsonName
+		IsProto3Optional bool // promoted from google.protobuf.FieldDescriptorProto
+		IsPacked         bool // promoted from google.protobuf.FieldOptions
+		Default          defaultValue
+		Enum             pref.EnumDescriptor
+		Message          pref.MessageDescriptor
+	}
+)
+
+func (xd *Extension) Options() pref.ProtoMessage {
+	if f := xd.lazyInit().Options; f != nil {
+		return f()
+	}
+	return descopts.Field
+}
+func (xd *Extension) Number() pref.FieldNumber      { return xd.L1.Number }
+func (xd *Extension) Cardinality() pref.Cardinality { return xd.L1.Cardinality }
+func (xd *Extension) Kind() pref.Kind               { return xd.L1.Kind }
+func (xd *Extension) HasJSONName() bool             { return xd.lazyInit().JSONName.has }
+func (xd *Extension) JSONName() string              { return xd.lazyInit().JSONName.get(xd) }
+func (xd *Extension) HasPresence() bool             { return xd.L1.Cardinality != pref.Repeated }
+func (xd *Extension) HasOptionalKeyword() bool {
+	return (xd.L0.ParentFile.L1.Syntax == pref.Proto2 && xd.L1.Cardinality == pref.Optional) || xd.lazyInit().IsProto3Optional
+}
+func (xd *Extension) IsPacked() bool                             { return xd.lazyInit().IsPacked }
+func (xd *Extension) IsExtension() bool                          { return true }
+func (xd *Extension) IsWeak() bool                               { return false }
+func (xd *Extension) IsList() bool                               { return xd.Cardinality() == pref.Repeated }
+func (xd *Extension) IsMap() bool                                { return false }
+func (xd *Extension) MapKey() pref.FieldDescriptor               { return nil }
+func (xd *Extension) MapValue() pref.FieldDescriptor             { return nil }
+func (xd *Extension) HasDefault() bool                           { return xd.lazyInit().Default.has }
+func (xd *Extension) Default() pref.Value                        { return xd.lazyInit().Default.get(xd) }
+func (xd *Extension) DefaultEnumValue() pref.EnumValueDescriptor { return xd.lazyInit().Default.enum }
+func (xd *Extension) ContainingOneof() pref.OneofDescriptor      { return nil }
+func (xd *Extension) ContainingMessage() pref.MessageDescriptor  { return xd.L1.Extendee }
+func (xd *Extension) Enum() pref.EnumDescriptor                  { return xd.lazyInit().Enum }
+func (xd *Extension) Message() pref.MessageDescriptor            { return xd.lazyInit().Message }
+func (xd *Extension) Format(s fmt.State, r rune)                 { descfmt.FormatDesc(s, r, xd) }
+func (xd *Extension) ProtoType(pref.FieldDescriptor)             {}
+func (xd *Extension) ProtoInternal(pragma.DoNotImplement)        {}
+func (xd *Extension) lazyInit() *ExtensionL2 {
+	xd.L0.ParentFile.lazyInit() // implicitly initializes L2
+	return xd.L2
+}
+
+type (
+	Service struct {
+		Base
+		L1 ServiceL1
+		L2 *ServiceL2 // protected by fileDesc.once
+	}
+	ServiceL1 struct{}
+	ServiceL2 struct {
+		Options func() pref.ProtoMessage
+		Methods Methods
+	}
+
+	Method struct {
+		Base
+		L1 MethodL1
+	}
+	MethodL1 struct {
+		Options           func() pref.ProtoMessage
+		Input             pref.MessageDescriptor
+		Output            pref.MessageDescriptor
+		IsStreamingClient bool
+		IsStreamingServer bool
+	}
+)
+
+func (sd *Service) Options() pref.ProtoMessage {
+	if f := sd.lazyInit().Options; f != nil {
+		return f()
+	}
+	return descopts.Service
+}
+func (sd *Service) Methods() pref.MethodDescriptors     { return &sd.lazyInit().Methods }
+func (sd *Service) Format(s fmt.State, r rune)          { descfmt.FormatDesc(s, r, sd) }
+func (sd *Service) ProtoType(pref.ServiceDescriptor)    {}
+func (sd *Service) ProtoInternal(pragma.DoNotImplement) {}
+func (sd *Service) lazyInit() *ServiceL2 {
+	sd.L0.ParentFile.lazyInit() // implicitly initializes L2
+	return sd.L2
+}
+
+func (md *Method) Options() pref.ProtoMessage {
+	if f := md.L1.Options; f != nil {
+		return f()
+	}
+	return descopts.Method
+}
+func (md *Method) Input() pref.MessageDescriptor       { return md.L1.Input }
+func (md *Method) Output() pref.MessageDescriptor      { return md.L1.Output }
+func (md *Method) IsStreamingClient() bool             { return md.L1.IsStreamingClient }
+func (md *Method) IsStreamingServer() bool             { return md.L1.IsStreamingServer }
+func (md *Method) Format(s fmt.State, r rune)          { descfmt.FormatDesc(s, r, md) }
+func (md *Method) ProtoType(pref.MethodDescriptor)     {}
+func (md *Method) ProtoInternal(pragma.DoNotImplement) {}
+
+// Surrogate files are can be used to create standalone descriptors
+// where the syntax is only information derived from the parent file.
+var (
+	SurrogateProto2 = &File{L1: FileL1{Syntax: pref.Proto2}, L2: &FileL2{}}
+	SurrogateProto3 = &File{L1: FileL1{Syntax: pref.Proto3}, L2: &FileL2{}}
+)
+
+type (
+	Base struct {
+		L0 BaseL0
+	}
+	BaseL0 struct {
+		FullName   pref.FullName // must be populated
+		ParentFile *File         // must be populated
+		Parent     pref.Descriptor
+		Index      int
+	}
+)
+
+func (d *Base) Name() pref.Name         { return d.L0.FullName.Name() }
+func (d *Base) FullName() pref.FullName { return d.L0.FullName }
+func (d *Base) ParentFile() pref.FileDescriptor {
+	if d.L0.ParentFile == SurrogateProto2 || d.L0.ParentFile == SurrogateProto3 {
+		return nil // surrogate files are not real parents
+	}
+	return d.L0.ParentFile
+}
+func (d *Base) Parent() pref.Descriptor             { return d.L0.Parent }
+func (d *Base) Index() int                          { return d.L0.Index }
+func (d *Base) Syntax() pref.Syntax                 { return d.L0.ParentFile.Syntax() }
+func (d *Base) IsPlaceholder() bool                 { return false }
+func (d *Base) ProtoInternal(pragma.DoNotImplement) {}
+
+type jsonName struct {
+	has  bool
+	once sync.Once
+	name string
+}
+
+// Init initializes the name. It is exported for use by other internal packages.
+func (js *jsonName) Init(s string) {
+	js.has = true
+	js.name = s
+}
+
+func (js *jsonName) get(fd pref.FieldDescriptor) string {
+	if !js.has {
+		js.once.Do(func() {
+			js.name = strs.JSONCamelCase(string(fd.Name()))
+		})
+	}
+	return js.name
+}
+
+func DefaultValue(v pref.Value, ev pref.EnumValueDescriptor) defaultValue {
+	dv := defaultValue{has: v.IsValid(), val: v, enum: ev}
+	if b, ok := v.Interface().([]byte); ok {
+		// Store a copy of the default bytes, so that we can detect
+		// accidental mutations of the original value.
+		dv.bytes = append([]byte(nil), b...)
+	}
+	return dv
+}
+
+func unmarshalDefault(b []byte, k pref.Kind, pf *File, ed pref.EnumDescriptor) defaultValue {
+	var evs pref.EnumValueDescriptors
+	if k == pref.EnumKind {
+		// If the enum is declared within the same file, be careful not to
+		// blindly call the Values method, lest we bind ourselves in a deadlock.
+		if e, ok := ed.(*Enum); ok && e.L0.ParentFile == pf {
+			evs = &e.L2.Values
+		} else {
+			evs = ed.Values()
+		}
+
+		// If we are unable to resolve the enum dependency, use a placeholder
+		// enum value since we will not be able to parse the default value.
+		if ed.IsPlaceholder() && pref.Name(b).IsValid() {
+			v := pref.ValueOfEnum(0)
+			ev := PlaceholderEnumValue(ed.FullName().Parent().Append(pref.Name(b)))
+			return DefaultValue(v, ev)
+		}
+	}
+
+	v, ev, err := defval.Unmarshal(string(b), k, evs, defval.Descriptor)
+	if err != nil {
+		panic(err)
+	}
+	return DefaultValue(v, ev)
+}
+
+type defaultValue struct {
+	has   bool
+	val   pref.Value
+	enum  pref.EnumValueDescriptor
+	bytes []byte
+}
+
+func (dv *defaultValue) get(fd pref.FieldDescriptor) pref.Value {
+	// Return the zero value as the default if unpopulated.
+	if !dv.has {
+		if fd.Cardinality() == pref.Repeated {
+			return pref.Value{}
+		}
+		switch fd.Kind() {
+		case pref.BoolKind:
+			return pref.ValueOfBool(false)
+		case pref.Int32Kind, pref.Sint32Kind, pref.Sfixed32Kind:
+			return pref.ValueOfInt32(0)
+		case pref.Int64Kind, pref.Sint64Kind, pref.Sfixed64Kind:
+			return pref.ValueOfInt64(0)
+		case pref.Uint32Kind, pref.Fixed32Kind:
+			return pref.ValueOfUint32(0)
+		case pref.Uint64Kind, pref.Fixed64Kind:
+			return pref.ValueOfUint64(0)
+		case pref.FloatKind:
+			return pref.ValueOfFloat32(0)
+		case pref.DoubleKind:
+			return pref.ValueOfFloat64(0)
+		case pref.StringKind:
+			return pref.ValueOfString("")
+		case pref.BytesKind:
+			return pref.ValueOfBytes(nil)
+		case pref.EnumKind:
+			if evs := fd.Enum().Values(); evs.Len() > 0 {
+				return pref.ValueOfEnum(evs.Get(0).Number())
+			}
+			return pref.ValueOfEnum(0)
+		}
+	}
+
+	if len(dv.bytes) > 0 && !bytes.Equal(dv.bytes, dv.val.Bytes()) {
+		// TODO: Avoid panic if we're running with the race detector
+		// and instead spawn a goroutine that periodically resets
+		// this value back to the original to induce a race.
+		panic(fmt.Sprintf("detected mutation on the default bytes for %v", fd.FullName()))
+	}
+	return dv.val
+}

vendor/google.golang.org/protobuf/internal/filedesc/desc_init.go

@@ -0,0 +1,471 @@
+// Copyright 2019 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package filedesc
+
+import (
+	"sync"
+
+	"google.golang.org/protobuf/encoding/protowire"
+	"google.golang.org/protobuf/internal/fieldnum"
+	"google.golang.org/protobuf/internal/strs"
+	pref "google.golang.org/protobuf/reflect/protoreflect"
+)
+
+// fileRaw is a data struct used when initializing a file descriptor from
+// a raw FileDescriptorProto.
+type fileRaw struct {
+	builder       Builder
+	allEnums      []Enum
+	allMessages   []Message
+	allExtensions []Extension
+	allServices   []Service
+}
+
+func newRawFile(db Builder) *File {
+	fd := &File{fileRaw: fileRaw{builder: db}}
+	fd.initDecls(db.NumEnums, db.NumMessages, db.NumExtensions, db.NumServices)
+	fd.unmarshalSeed(db.RawDescriptor)
+
+	// Extended message targets are eagerly resolved since registration
+	// needs this information at program init time.
+	for i := range fd.allExtensions {
+		xd := &fd.allExtensions[i]
+		xd.L1.Extendee = fd.resolveMessageDependency(xd.L1.Extendee, listExtTargets, int32(i))
+	}
+
+	fd.checkDecls()
+	return fd
+}
+
+// initDecls pre-allocates slices for the exact number of enums, messages
+// (including map entries), extensions, and services declared in the proto file.
+// This is done to avoid regrowing the slice, which would change the address
+// for any previously seen declaration.
+//
+// The alloc methods "allocates" slices by pulling from the capacity.
+func (fd *File) initDecls(numEnums, numMessages, numExtensions, numServices int32) {
+	fd.allEnums = make([]Enum, 0, numEnums)
+	fd.allMessages = make([]Message, 0, numMessages)
+	fd.allExtensions = make([]Extension, 0, numExtensions)
+	fd.allServices = make([]Service, 0, numServices)
+}
+
+func (fd *File) allocEnums(n int) []Enum {
+	total := len(fd.allEnums)
+	es := fd.allEnums[total : total+n]
+	fd.allEnums = fd.allEnums[:total+n]
+	return es
+}
+func (fd *File) allocMessages(n int) []Message {
+	total := len(fd.allMessages)
+	ms := fd.allMessages[total : total+n]
+	fd.allMessages = fd.allMessages[:total+n]
+	return ms
+}
+func (fd *File) allocExtensions(n int) []Extension {
+	total := len(fd.allExtensions)
+	xs := fd.allExtensions[total : total+n]
+	fd.allExtensions = fd.allExtensions[:total+n]
+	return xs
+}
+func (fd *File) allocServices(n int) []Service {
+	total := len(fd.allServices)
+	xs := fd.allServices[total : total+n]
+	fd.allServices = fd.allServices[:total+n]
+	return xs
+}
+
+// checkDecls performs a sanity check that the expected number of expected
+// declarations matches the number that were found in the descriptor proto.
+func (fd *File) checkDecls() {
+	switch {
+	case len(fd.allEnums) != cap(fd.allEnums):
+	case len(fd.allMessages) != cap(fd.allMessages):
+	case len(fd.allExtensions) != cap(fd.allExtensions):
+	case len(fd.allServices) != cap(fd.allServices):
+	default:
+		return
+	}
+	panic("mismatching cardinality")
+}
+
+func (fd *File) unmarshalSeed(b []byte) {
+	sb := getBuilder()
+	defer putBuilder(sb)
+
+	var prevField pref.FieldNumber
+	var numEnums, numMessages, numExtensions, numServices int
+	var posEnums, posMessages, posExtensions, posServices int
+	b0 := b
+	for len(b) > 0 {
+		num, typ, n := protowire.ConsumeTag(b)
+		b = b[n:]
+		switch typ {
+		case protowire.BytesType:
+			v, m := protowire.ConsumeBytes(b)
+			b = b[m:]
+			switch num {
+			case fieldnum.FileDescriptorProto_Syntax:
+				switch string(v) {
+				case "proto2":
+					fd.L1.Syntax = pref.Proto2
+				case "proto3":
+					fd.L1.Syntax = pref.Proto3
+				default:
+					panic("invalid syntax")
+				}
+			case fieldnum.FileDescriptorProto_Name:
+				fd.L1.Path = sb.MakeString(v)
+			case fieldnum.FileDescriptorProto_Package:
+				fd.L1.Package = pref.FullName(sb.MakeString(v))
+			case fieldnum.FileDescriptorProto_EnumType:
+				if prevField != fieldnum.FileDescriptorProto_EnumType {
+					if numEnums > 0 {
+						panic("non-contiguous repeated field")
+					}
+					posEnums = len(b0) - len(b) - n - m
+				}
+				numEnums++
+			case fieldnum.FileDescriptorProto_MessageType:
+				if prevField != fieldnum.FileDescriptorProto_MessageType {
+					if numMessages > 0 {
+						panic("non-contiguous repeated field")
+					}
+					posMessages = len(b0) - len(b) - n - m
+				}
+				numMessages++
+			case fieldnum.FileDescriptorProto_Extension:
+				if prevField != fieldnum.FileDescriptorProto_Extension {
+					if numExtensions > 0 {
+						panic("non-contiguous repeated field")
+					}
+					posExtensions = len(b0) - len(b) - n - m
+				}
+				numExtensions++
+			case fieldnum.FileDescriptorProto_Service:
+				if prevField != fieldnum.FileDescriptorProto_Service {
+					if numServices > 0 {
+						panic("non-contiguous repeated field")
+					}
+					posServices = len(b0) - len(b) - n - m
+				}
+				numServices++
+			}
+			prevField = num
+		default:
+			m := protowire.ConsumeFieldValue(num, typ, b)
+			b = b[m:]
+			prevField = -1 // ignore known field numbers of unknown wire type
+		}
+	}
+
+	// If syntax is missing, it is assumed to be proto2.
+	if fd.L1.Syntax == 0 {
+		fd.L1.Syntax = pref.Proto2
+	}
+
+	// Must allocate all declarations before parsing each descriptor type
+	// to ensure we handled all descriptors in "flattened ordering".
+	if numEnums > 0 {
+		fd.L1.Enums.List = fd.allocEnums(numEnums)
+	}
+	if numMessages > 0 {
+		fd.L1.Messages.List = fd.allocMessages(numMessages)
+	}
+	if numExtensions > 0 {
+		fd.L1.Extensions.List = fd.allocExtensions(numExtensions)
+	}
+	if numServices > 0 {
+		fd.L1.Services.List = fd.allocServices(numServices)
+	}
+
+	if numEnums > 0 {
+		b := b0[posEnums:]
+		for i := range fd.L1.Enums.List {
+			_, n := protowire.ConsumeVarint(b)
+			v, m := protowire.ConsumeBytes(b[n:])
+			fd.L1.Enums.List[i].unmarshalSeed(v, sb, fd, fd, i)
+			b = b[n+m:]
+		}
+	}
+	if numMessages > 0 {
+		b := b0[posMessages:]
+		for i := range fd.L1.Messages.List {
+			_, n := protowire.ConsumeVarint(b)
+			v, m := protowire.ConsumeBytes(b[n:])
+			fd.L1.Messages.List[i].unmarshalSeed(v, sb, fd, fd, i)
+			b = b[n+m:]
+		}
+	}
+	if numExtensions > 0 {
+		b := b0[posExtensions:]
+		for i := range fd.L1.Extensions.List {
+			_, n := protowire.ConsumeVarint(b)
+			v, m := protowire.ConsumeBytes(b[n:])
+			fd.L1.Extensions.List[i].unmarshalSeed(v, sb, fd, fd, i)
+			b = b[n+m:]
+		}
+	}
+	if numServices > 0 {
+		b := b0[posServices:]
+		for i := range fd.L1.Services.List {
+			_, n := protowire.ConsumeVarint(b)
+			v, m := protowire.ConsumeBytes(b[n:])
+			fd.L1.Services.List[i].unmarshalSeed(v, sb, fd, fd, i)
+			b = b[n+m:]
+		}
+	}
+}
+
+func (ed *Enum) unmarshalSeed(b []byte, sb *strs.Builder, pf *File, pd pref.Descriptor, i int) {
+	ed.L0.ParentFile = pf
+	ed.L0.Parent = pd
+	ed.L0.Index = i
+
+	var numValues int
+	for b := b; len(b) > 0; {
+		num, typ, n := protowire.ConsumeTag(b)
+		b = b[n:]
+		switch typ {
+		case protowire.BytesType:
+			v, m := protowire.ConsumeBytes(b)
+			b = b[m:]
+			switch num {
+			case fieldnum.EnumDescriptorProto_Name:
+				ed.L0.FullName = appendFullName(sb, pd.FullName(), v)
+			case fieldnum.EnumDescriptorProto_Value:
+				numValues++
+			}
+		default:
+			m := protowire.ConsumeFieldValue(num, typ, b)
+			b = b[m:]
+		}
+	}
+
+	// Only construct enum value descriptors for top-level enums since
+	// they are needed for registration.
+	if pd != pf {
+		return
+	}
+	ed.L1.eagerValues = true
+	ed.L2 = new(EnumL2)
+	ed.L2.Values.List = make([]EnumValue, numValues)
+	for i := 0; len(b) > 0; {
+		num, typ, n := protowire.ConsumeTag(b)
+		b = b[n:]
+		switch typ {
+		case protowire.BytesType:
+			v, m := protowire.ConsumeBytes(b)
+			b = b[m:]
+			switch num {
+			case fieldnum.EnumDescriptorProto_Value:
+				ed.L2.Values.List[i].unmarshalFull(v, sb, pf, ed, i)
+				i++
+			}
+		default:
+			m := protowire.ConsumeFieldValue(num, typ, b)
+			b = b[m:]
+		}
+	}
+}
+
+func (md *Message) unmarshalSeed(b []byte, sb *strs.Builder, pf *File, pd pref.Descriptor, i int) {
+	md.L0.ParentFile = pf
+	md.L0.Parent = pd
+	md.L0.Index = i
+
+	var prevField pref.FieldNumber
+	var numEnums, numMessages, numExtensions int
+	var posEnums, posMessages, posExtensions int
+	b0 := b
+	for len(b) > 0 {
+		num, typ, n := protowire.ConsumeTag(b)
+		b = b[n:]
+		switch typ {
+		case protowire.BytesType:
+			v, m := protowire.ConsumeBytes(b)
+			b = b[m:]
+			switch num {
+			case fieldnum.DescriptorProto_Name:
+				md.L0.FullName = appendFullName(sb, pd.FullName(), v)
+			case fieldnum.DescriptorProto_EnumType:
+				if prevField != fieldnum.DescriptorProto_EnumType {
+					if numEnums > 0 {
+						panic("non-contiguous repeated field")
+					}
+					posEnums = len(b0) - len(b) - n - m
+				}
+				numEnums++
+			case fieldnum.DescriptorProto_NestedType:
+				if prevField != fieldnum.DescriptorProto_NestedType {
+					if numMessages > 0 {
+						panic("non-contiguous repeated field")
+					}
+					posMessages = len(b0) - len(b) - n - m
+				}
+				numMessages++
+			case fieldnum.DescriptorProto_Extension:
+				if prevField != fieldnum.DescriptorProto_Extension {
+					if numExtensions > 0 {
+						panic("non-contiguous repeated field")
+					}
+					posExtensions = len(b0) - len(b) - n - m
+				}
+				numExtensions++
+			case fieldnum.DescriptorProto_Options:
+				md.unmarshalSeedOptions(v)
+			}
+			prevField = num
+		default:
+			m := protowire.ConsumeFieldValue(num, typ, b)
+			b = b[m:]
+			prevField = -1 // ignore known field numbers of unknown wire type
+		}
+	}
+
+	// Must allocate all declarations before parsing each descriptor type
+	// to ensure we handled all descriptors in "flattened ordering".
+	if numEnums > 0 {
+		md.L1.Enums.List = pf.allocEnums(numEnums)
+	}
+	if numMessages > 0 {
+		md.L1.Messages.List = pf.allocMessages(numMessages)
+	}
+	if numExtensions > 0 {
+		md.L1.Extensions.List = pf.allocExtensions(numExtensions)
+	}
+
+	if numEnums > 0 {
+		b := b0[posEnums:]
+		for i := range md.L1.Enums.List {
+			_, n := protowire.ConsumeVarint(b)
+			v, m := protowire.ConsumeBytes(b[n:])
+			md.L1.Enums.List[i].unmarshalSeed(v, sb, pf, md, i)
+			b = b[n+m:]
+		}
+	}
+	if numMessages > 0 {
+		b := b0[posMessages:]
+		for i := range md.L1.Messages.List {
+			_, n := protowire.ConsumeVarint(b)
+			v, m := protowire.ConsumeBytes(b[n:])
+			md.L1.Messages.List[i].unmarshalSeed(v, sb, pf, md, i)
+			b = b[n+m:]
+		}
+	}
+	if numExtensions > 0 {
+		b := b0[posExtensions:]
+		for i := range md.L1.Extensions.List {
+			_, n := protowire.ConsumeVarint(b)
+			v, m := protowire.ConsumeBytes(b[n:])
+			md.L1.Extensions.List[i].unmarshalSeed(v, sb, pf, md, i)
+			b = b[n+m:]
+		}
+	}
+}
+
+func (md *Message) unmarshalSeedOptions(b []byte) {
+	for len(b) > 0 {
+		num, typ, n := protowire.ConsumeTag(b)
+		b = b[n:]
+		switch typ {
+		case protowire.VarintType:
+			v, m := protowire.ConsumeVarint(b)
+			b = b[m:]
+			switch num {
+			case fieldnum.MessageOptions_MapEntry:
+				md.L1.IsMapEntry = protowire.DecodeBool(v)
+			case fieldnum.MessageOptions_MessageSetWireFormat:
+				md.L1.IsMessageSet = protowire.DecodeBool(v)
+			}
+		default:
+			m := protowire.ConsumeFieldValue(num, typ, b)
+			b = b[m:]
+		}
+	}
+}
+
+func (xd *Extension) unmarshalSeed(b []byte, sb *strs.Builder, pf *File, pd pref.Descriptor, i int) {
+	xd.L0.ParentFile = pf
+	xd.L0.Parent = pd
+	xd.L0.Index = i
+
+	for len(b) > 0 {
+		num, typ, n := protowire.ConsumeTag(b)
+		b = b[n:]
+		switch typ {
+		case protowire.VarintType:
+			v, m := protowire.ConsumeVarint(b)
+			b = b[m:]
+			switch num {
+			case fieldnum.FieldDescriptorProto_Number:
+				xd.L1.Number = pref.FieldNumber(v)
+			case fieldnum.FieldDescriptorProto_Label:
+				xd.L1.Cardinality = pref.Cardinality(v)
+			case fieldnum.FieldDescriptorProto_Type:
+				xd.L1.Kind = pref.Kind(v)
+			}
+		case protowire.BytesType:
+			v, m := protowire.ConsumeBytes(b)
+			b = b[m:]
+			switch num {
+			case fieldnum.FieldDescriptorProto_Name:
+				xd.L0.FullName = appendFullName(sb, pd.FullName(), v)
+			case fieldnum.FieldDescriptorProto_Extendee:
+				xd.L1.Extendee = PlaceholderMessage(makeFullName(sb, v))
+			}
+		default:
+			m := protowire.ConsumeFieldValue(num, typ, b)
+			b = b[m:]
+		}
+	}
+}
+
+func (sd *Service) unmarshalSeed(b []byte, sb *strs.Builder, pf *File, pd pref.Descriptor, i int) {
+	sd.L0.ParentFile = pf
+	sd.L0.Parent = pd
+	sd.L0.Index = i
+
+	for len(b) > 0 {
+		num, typ, n := protowire.ConsumeTag(b)
+		b = b[n:]
+		switch typ {
+		case protowire.BytesType:
+			v, m := protowire.ConsumeBytes(b)
+			b = b[m:]
+			switch num {
+			case fieldnum.ServiceDescriptorProto_Name:
+				sd.L0.FullName = appendFullName(sb, pd.FullName(), v)
+			}
+		default:
+			m := protowire.ConsumeFieldValue(num, typ, b)
+			b = b[m:]
+		}
+	}
+}
+
+var nameBuilderPool = sync.Pool{
+	New: func() interface{} { return new(strs.Builder) },
+}
+
+func getBuilder() *strs.Builder {
+	return nameBuilderPool.Get().(*strs.Builder)
+}
+func putBuilder(b *strs.Builder) {
+	nameBuilderPool.Put(b)
+}
+
+// makeFullName converts b to a protoreflect.FullName,
+// where b must start with a leading dot.
+func makeFullName(sb *strs.Builder, b []byte) pref.FullName {
+	if len(b) == 0 || b[0] != '.' {
+		panic("name reference must be fully qualified")
+	}
+	return pref.FullName(sb.MakeString(b[1:]))
+}
+
+func appendFullName(sb *strs.Builder, prefix pref.FullName, suffix []byte) pref.FullName {
+	return sb.AppendFullName(prefix, pref.Name(strs.UnsafeString(suffix)))
+}

vendor/google.golang.org/protobuf/internal/filedesc/desc_lazy.go

@@ -0,0 +1,704 @@
+// Copyright 2019 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package filedesc
+
+import (
+	"reflect"
+	"sync"
+
+	"google.golang.org/protobuf/encoding/protowire"
+	"google.golang.org/protobuf/internal/descopts"
+	"google.golang.org/protobuf/internal/fieldnum"
+	"google.golang.org/protobuf/internal/strs"
+	"google.golang.org/protobuf/proto"
+	pref "google.golang.org/protobuf/reflect/protoreflect"
+)
+
+func (fd *File) lazyRawInit() {
+	fd.unmarshalFull(fd.builder.RawDescriptor)
+	fd.resolveMessages()
+	fd.resolveExtensions()
+	fd.resolveServices()
+}
+
+func (file *File) resolveMessages() {
+	var depIdx int32
+	for i := range file.allMessages {
+		md := &file.allMessages[i]
+
+		// Resolve message field dependencies.
+		for j := range md.L2.Fields.List {
+			fd := &md.L2.Fields.List[j]
+
+			// Weak fields are resolved upon actual use.
+			if fd.L1.IsWeak {
+				continue
+			}
+
+			// Resolve message field dependency.
+			switch fd.L1.Kind {
+			case pref.EnumKind:
+				fd.L1.Enum = file.resolveEnumDependency(fd.L1.Enum, listFieldDeps, depIdx)
+				depIdx++
+			case pref.MessageKind, pref.GroupKind:
+				fd.L1.Message = file.resolveMessageDependency(fd.L1.Message, listFieldDeps, depIdx)
+				depIdx++
+			}
+
+			// Default is resolved here since it depends on Enum being resolved.
+			if v := fd.L1.Default.val; v.IsValid() {
+				fd.L1.Default = unmarshalDefault(v.Bytes(), fd.L1.Kind, file, fd.L1.Enum)
+			}
+		}
+	}
+}
+
+func (file *File) resolveExtensions() {
+	var depIdx int32
+	for i := range file.allExtensions {
+		xd := &file.allExtensions[i]
+
+		// Resolve extension field dependency.
+		switch xd.L1.Kind {
+		case pref.EnumKind:
+			xd.L2.Enum = file.resolveEnumDependency(xd.L2.Enum, listExtDeps, depIdx)
+			depIdx++
+		case pref.MessageKind, pref.GroupKind:
+			xd.L2.Message = file.resolveMessageDependency(xd.L2.Message, listExtDeps, depIdx)
+			depIdx++
+		}
+
+		// Default is resolved here since it depends on Enum being resolved.
+		if v := xd.L2.Default.val; v.IsValid() {
+			xd.L2.Default = unmarshalDefault(v.Bytes(), xd.L1.Kind, file, xd.L2.Enum)
+		}
+	}
+}
+
+func (file *File) resolveServices() {
+	var depIdx int32
+	for i := range file.allServices {
+		sd := &file.allServices[i]
+
+		// Resolve method dependencies.
+		for j := range sd.L2.Methods.List {
+			md := &sd.L2.Methods.List[j]
+			md.L1.Input = file.resolveMessageDependency(md.L1.Input, listMethInDeps, depIdx)
+			md.L1.Output = file.resolveMessageDependency(md.L1.Output, listMethOutDeps, depIdx)
+			depIdx++
+		}
+	}
+}
+
+func (file *File) resolveEnumDependency(ed pref.EnumDescriptor, i, j int32) pref.EnumDescriptor {
+	r := file.builder.FileRegistry
+	if r, ok := r.(resolverByIndex); ok {
+		if ed2 := r.FindEnumByIndex(i, j, file.allEnums, file.allMessages); ed2 != nil {
+			return ed2
+		}
+	}
+	for i := range file.allEnums {
+		if ed2 := &file.allEnums[i]; ed2.L0.FullName == ed.FullName() {
+			return ed2
+		}
+	}
+	if d, _ := r.FindDescriptorByName(ed.FullName()); d != nil {
+		return d.(pref.EnumDescriptor)
+	}
+	return ed
+}
+
+func (file *File) resolveMessageDependency(md pref.MessageDescriptor, i, j int32) pref.MessageDescriptor {
+	r := file.builder.FileRegistry
+	if r, ok := r.(resolverByIndex); ok {
+		if md2 := r.FindMessageByIndex(i, j, file.allEnums, file.allMessages); md2 != nil {
+			return md2
+		}
+	}
+	for i := range file.allMessages {
+		if md2 := &file.allMessages[i]; md2.L0.FullName == md.FullName() {
+			return md2
+		}
+	}
+	if d, _ := r.FindDescriptorByName(md.FullName()); d != nil {
+		return d.(pref.MessageDescriptor)
+	}
+	return md
+}
+
+func (fd *File) unmarshalFull(b []byte) {
+	sb := getBuilder()
+	defer putBuilder(sb)
+
+	var enumIdx, messageIdx, extensionIdx, serviceIdx int
+	var rawOptions []byte
+	fd.L2 = new(FileL2)
+	for len(b) > 0 {
+		num, typ, n := protowire.ConsumeTag(b)
+		b = b[n:]
+		switch typ {
+		case protowire.VarintType:
+			v, m := protowire.ConsumeVarint(b)
+			b = b[m:]
+			switch num {
+			case fieldnum.FileDescriptorProto_PublicDependency:
+				fd.L2.Imports[v].IsPublic = true
+			case fieldnum.FileDescriptorProto_WeakDependency:
+				fd.L2.Imports[v].IsWeak = true
+			}
+		case protowire.BytesType:
+			v, m := protowire.ConsumeBytes(b)
+			b = b[m:]
+			switch num {
+			case fieldnum.FileDescriptorProto_Dependency:
+				path := sb.MakeString(v)
+				imp, _ := fd.builder.FileRegistry.FindFileByPath(path)
+				if imp == nil {
+					imp = PlaceholderFile(path)
+				}
+				fd.L2.Imports = append(fd.L2.Imports, pref.FileImport{FileDescriptor: imp})
+			case fieldnum.FileDescriptorProto_EnumType:
+				fd.L1.Enums.List[enumIdx].unmarshalFull(v, sb)
+				enumIdx++
+			case fieldnum.FileDescriptorProto_MessageType:
+				fd.L1.Messages.List[messageIdx].unmarshalFull(v, sb)
+				messageIdx++
+			case fieldnum.FileDescriptorProto_Extension:
+				fd.L1.Extensions.List[extensionIdx].unmarshalFull(v, sb)
+				extensionIdx++
+			case fieldnum.FileDescriptorProto_Service:
+				fd.L1.Services.List[serviceIdx].unmarshalFull(v, sb)
+				serviceIdx++
+			case fieldnum.FileDescriptorProto_Options:
+				rawOptions = appendOptions(rawOptions, v)
+			}
+		default:
+			m := protowire.ConsumeFieldValue(num, typ, b)
+			b = b[m:]
+		}
+	}
+	fd.L2.Options = fd.builder.optionsUnmarshaler(&descopts.File, rawOptions)
+}
+
+func (ed *Enum) unmarshalFull(b []byte, sb *strs.Builder) {
+	var rawValues [][]byte
+	var rawOptions []byte
+	if !ed.L1.eagerValues {
+		ed.L2 = new(EnumL2)
+	}
+	for len(b) > 0 {
+		num, typ, n := protowire.ConsumeTag(b)
+		b = b[n:]
+		switch typ {
+		case protowire.BytesType:
+			v, m := protowire.ConsumeBytes(b)
+			b = b[m:]
+			switch num {
+			case fieldnum.EnumDescriptorProto_Value:
+				rawValues = append(rawValues, v)
+			case fieldnum.EnumDescriptorProto_ReservedName:
+				ed.L2.ReservedNames.List = append(ed.L2.ReservedNames.List, pref.Name(sb.MakeString(v)))
+			case fieldnum.EnumDescriptorProto_ReservedRange:
+				ed.L2.ReservedRanges.List = append(ed.L2.ReservedRanges.List, unmarshalEnumReservedRange(v))
+			case fieldnum.EnumDescriptorProto_Options:
+				rawOptions = appendOptions(rawOptions, v)
+			}
+		default:
+			m := protowire.ConsumeFieldValue(num, typ, b)
+			b = b[m:]
+		}
+	}
+	if !ed.L1.eagerValues && len(rawValues) > 0 {
+		ed.L2.Values.List = make([]EnumValue, len(rawValues))
+		for i, b := range rawValues {
+			ed.L2.Values.List[i].unmarshalFull(b, sb, ed.L0.ParentFile, ed, i)
+		}
+	}
+	ed.L2.Options = ed.L0.ParentFile.builder.optionsUnmarshaler(&descopts.Enum, rawOptions)
+}
+
+func unmarshalEnumReservedRange(b []byte) (r [2]pref.EnumNumber) {
+	for len(b) > 0 {
+		num, typ, n := protowire.ConsumeTag(b)
+		b = b[n:]
+		switch typ {
+		case protowire.VarintType:
+			v, m := protowire.ConsumeVarint(b)
+			b = b[m:]
+			switch num {
+			case fieldnum.EnumDescriptorProto_EnumReservedRange_Start:
+				r[0] = pref.EnumNumber(v)
+			case fieldnum.EnumDescriptorProto_EnumReservedRange_End:
+				r[1] = pref.EnumNumber(v)
+			}
+		default:
+			m := protowire.ConsumeFieldValue(num, typ, b)
+			b = b[m:]
+		}
+	}
+	return r
+}
+
+func (vd *EnumValue) unmarshalFull(b []byte, sb *strs.Builder, pf *File, pd pref.Descriptor, i int) {
+	vd.L0.ParentFile = pf
+	vd.L0.Parent = pd
+	vd.L0.Index = i
+
+	var rawOptions []byte
+	for len(b) > 0 {
+		num, typ, n := protowire.ConsumeTag(b)
+		b = b[n:]
+		switch typ {
+		case protowire.VarintType:
+			v, m := protowire.ConsumeVarint(b)
+			b = b[m:]
+			switch num {
+			case fieldnum.EnumValueDescriptorProto_Number:
+				vd.L1.Number = pref.EnumNumber(v)
+			}
+		case protowire.BytesType:
+			v, m := protowire.ConsumeBytes(b)
+			b = b[m:]
+			switch num {
+			case fieldnum.EnumValueDescriptorProto_Name:
+				// NOTE: Enum values are in the same scope as the enum parent.
+				vd.L0.FullName = appendFullName(sb, pd.Parent().FullName(), v)
+			case fieldnum.EnumValueDescriptorProto_Options:
+				rawOptions = appendOptions(rawOptions, v)
+			}
+		default:
+			m := protowire.ConsumeFieldValue(num, typ, b)
+			b = b[m:]
+		}
+	}
+	vd.L1.Options = pf.builder.optionsUnmarshaler(&descopts.EnumValue, rawOptions)
+}
+
+func (md *Message) unmarshalFull(b []byte, sb *strs.Builder) {
+	var rawFields, rawOneofs [][]byte
+	var enumIdx, messageIdx, extensionIdx int
+	var rawOptions []byte
+	md.L2 = new(MessageL2)
+	for len(b) > 0 {
+		num, typ, n := protowire.ConsumeTag(b)
+		b = b[n:]
+		switch typ {
+		case protowire.BytesType:
+			v, m := protowire.ConsumeBytes(b)
+			b = b[m:]
+			switch num {
+			case fieldnum.DescriptorProto_Field:
+				rawFields = append(rawFields, v)
+			case fieldnum.DescriptorProto_OneofDecl:
+				rawOneofs = append(rawOneofs, v)
+			case fieldnum.DescriptorProto_ReservedName:
+				md.L2.ReservedNames.List = append(md.L2.ReservedNames.List, pref.Name(sb.MakeString(v)))
+			case fieldnum.DescriptorProto_ReservedRange:
+				md.L2.ReservedRanges.List = append(md.L2.ReservedRanges.List, unmarshalMessageReservedRange(v))
+			case fieldnum.DescriptorProto_ExtensionRange:
+				r, rawOptions := unmarshalMessageExtensionRange(v)
+				opts := md.L0.ParentFile.builder.optionsUnmarshaler(&descopts.ExtensionRange, rawOptions)
+				md.L2.ExtensionRanges.List = append(md.L2.ExtensionRanges.List, r)
+				md.L2.ExtensionRangeOptions = append(md.L2.ExtensionRangeOptions, opts)
+			case fieldnum.DescriptorProto_EnumType:
+				md.L1.Enums.List[enumIdx].unmarshalFull(v, sb)
+				enumIdx++
+			case fieldnum.DescriptorProto_NestedType:
+				md.L1.Messages.List[messageIdx].unmarshalFull(v, sb)
+				messageIdx++
+			case fieldnum.DescriptorProto_Extension:
+				md.L1.Extensions.List[extensionIdx].unmarshalFull(v, sb)
+				extensionIdx++
+			case fieldnum.DescriptorProto_Options:
+				md.unmarshalOptions(v)
+				rawOptions = appendOptions(rawOptions, v)
+			}
+		default:
+			m := protowire.ConsumeFieldValue(num, typ, b)
+			b = b[m:]
+		}
+	}
+	if len(rawFields) > 0 || len(rawOneofs) > 0 {
+		md.L2.Fields.List = make([]Field, len(rawFields))
+		md.L2.Oneofs.List = make([]Oneof, len(rawOneofs))
+		for i, b := range rawFields {
+			fd := &md.L2.Fields.List[i]
+			fd.unmarshalFull(b, sb, md.L0.ParentFile, md, i)
+			if fd.L1.Cardinality == pref.Required {
+				md.L2.RequiredNumbers.List = append(md.L2.RequiredNumbers.List, fd.L1.Number)
+			}
+		}
+		for i, b := range rawOneofs {
+			od := &md.L2.Oneofs.List[i]
+			od.unmarshalFull(b, sb, md.L0.ParentFile, md, i)
+		}
+	}
+	md.L2.Options = md.L0.ParentFile.builder.optionsUnmarshaler(&descopts.Message, rawOptions)
+}
+
+func (md *Message) unmarshalOptions(b []byte) {
+	for len(b) > 0 {
+		num, typ, n := protowire.ConsumeTag(b)
+		b = b[n:]
+		switch typ {
+		case protowire.VarintType:
+			v, m := protowire.ConsumeVarint(b)
+			b = b[m:]
+			switch num {
+			case fieldnum.MessageOptions_MapEntry:
+				md.L1.IsMapEntry = protowire.DecodeBool(v)
+			case fieldnum.MessageOptions_MessageSetWireFormat:
+				md.L1.IsMessageSet = protowire.DecodeBool(v)
+			}
+		default:
+			m := protowire.ConsumeFieldValue(num, typ, b)
+			b = b[m:]
+		}
+	}
+}
+
+func unmarshalMessageReservedRange(b []byte) (r [2]pref.FieldNumber) {
+	for len(b) > 0 {
+		num, typ, n := protowire.ConsumeTag(b)
+		b = b[n:]
+		switch typ {
+		case protowire.VarintType:
+			v, m := protowire.ConsumeVarint(b)
+			b = b[m:]
+			switch num {
+			case fieldnum.DescriptorProto_ReservedRange_Start:
+				r[0] = pref.FieldNumber(v)
+			case fieldnum.DescriptorProto_ReservedRange_End:
+				r[1] = pref.FieldNumber(v)
+			}
+		default:
+			m := protowire.ConsumeFieldValue(num, typ, b)
+			b = b[m:]
+		}
+	}
+	return r
+}
+
+func unmarshalMessageExtensionRange(b []byte) (r [2]pref.FieldNumber, rawOptions []byte) {
+	for len(b) > 0 {
+		num, typ, n := protowire.ConsumeTag(b)
+		b = b[n:]
+		switch typ {
+		case protowire.VarintType:
+			v, m := protowire.ConsumeVarint(b)
+			b = b[m:]
+			switch num {
+			case fieldnum.DescriptorProto_ExtensionRange_Start:
+				r[0] = pref.FieldNumber(v)
+			case fieldnum.DescriptorProto_ExtensionRange_End:
+				r[1] = pref.FieldNumber(v)
+			}
+		case protowire.BytesType:
+			v, m := protowire.ConsumeBytes(b)
+			b = b[m:]
+			switch num {
+			case fieldnum.DescriptorProto_ExtensionRange_Options:
+				rawOptions = appendOptions(rawOptions, v)
+			}
+		default:
+			m := protowire.ConsumeFieldValue(num, typ, b)
+			b = b[m:]
+		}
+	}
+	return r, rawOptions
+}
+
+func (fd *Field) unmarshalFull(b []byte, sb *strs.Builder, pf *File, pd pref.Descriptor, i int) {
+	fd.L0.ParentFile = pf
+	fd.L0.Parent = pd
+	fd.L0.Index = i
+
+	var rawTypeName []byte
+	var rawOptions []byte
+	for len(b) > 0 {
+		num, typ, n := protowire.ConsumeTag(b)
+		b = b[n:]
+		switch typ {
+		case protowire.VarintType:
+			v, m := protowire.ConsumeVarint(b)
+			b = b[m:]
+			switch num {
+			case fieldnum.FieldDescriptorProto_Number:
+				fd.L1.Number = pref.FieldNumber(v)
+			case fieldnum.FieldDescriptorProto_Label:
+				fd.L1.Cardinality = pref.Cardinality(v)
+			case fieldnum.FieldDescriptorProto_Type:
+				fd.L1.Kind = pref.Kind(v)
+			case fieldnum.FieldDescriptorProto_OneofIndex:
+				// In Message.unmarshalFull, we allocate slices for both
+				// the field and oneof descriptors before unmarshaling either
+				// of them. This ensures pointers to slice elements are stable.
+				od := &pd.(*Message).L2.Oneofs.List[v]
+				od.L1.Fields.List = append(od.L1.Fields.List, fd)
+				if fd.L1.ContainingOneof != nil {
+					panic("oneof type already set")
+				}
+				fd.L1.ContainingOneof = od
+			case fieldnum.FieldDescriptorProto_Proto3Optional:
+				fd.L1.IsProto3Optional = protowire.DecodeBool(v)
+			}
+		case protowire.BytesType:
+			v, m := protowire.ConsumeBytes(b)
+			b = b[m:]
+			switch num {
+			case fieldnum.FieldDescriptorProto_Name:
+				fd.L0.FullName = appendFullName(sb, pd.FullName(), v)
+			case fieldnum.FieldDescriptorProto_JsonName:
+				fd.L1.JSONName.Init(sb.MakeString(v))
+			case fieldnum.FieldDescriptorProto_DefaultValue:
+				fd.L1.Default.val = pref.ValueOfBytes(v) // temporarily store as bytes; later resolved in resolveMessages
+			case fieldnum.FieldDescriptorProto_TypeName:
+				rawTypeName = v
+			case fieldnum.FieldDescriptorProto_Options:
+				fd.unmarshalOptions(v)
+				rawOptions = appendOptions(rawOptions, v)
+			}
+		default:
+			m := protowire.ConsumeFieldValue(num, typ, b)
+			b = b[m:]
+		}
+	}
+	if rawTypeName != nil {
+		name := makeFullName(sb, rawTypeName)
+		switch fd.L1.Kind {
+		case pref.EnumKind:
+			fd.L1.Enum = PlaceholderEnum(name)
+		case pref.MessageKind, pref.GroupKind:
+			fd.L1.Message = PlaceholderMessage(name)
+		}
+	}
+	fd.L1.Options = pf.builder.optionsUnmarshaler(&descopts.Field, rawOptions)
+}
+
+func (fd *Field) unmarshalOptions(b []byte) {
+	const FieldOptions_EnforceUTF8 = 13
+
+	for len(b) > 0 {
+		num, typ, n := protowire.ConsumeTag(b)
+		b = b[n:]
+		switch typ {
+		case protowire.VarintType:
+			v, m := protowire.ConsumeVarint(b)
+			b = b[m:]
+			switch num {
+			case fieldnum.FieldOptions_Packed:
+				fd.L1.HasPacked = true
+				fd.L1.IsPacked = protowire.DecodeBool(v)
+			case fieldnum.FieldOptions_Weak:
+				fd.L1.IsWeak = protowire.DecodeBool(v)
+			case FieldOptions_EnforceUTF8:
+				fd.L1.HasEnforceUTF8 = true
+				fd.L1.EnforceUTF8 = protowire.DecodeBool(v)
+			}
+		default:
+			m := protowire.ConsumeFieldValue(num, typ, b)
+			b = b[m:]
+		}
+	}
+}
+
+func (od *Oneof) unmarshalFull(b []byte, sb *strs.Builder, pf *File, pd pref.Descriptor, i int) {
+	od.L0.ParentFile = pf
+	od.L0.Parent = pd
+	od.L0.Index = i
+
+	var rawOptions []byte
+	for len(b) > 0 {
+		num, typ, n := protowire.ConsumeTag(b)
+		b = b[n:]
+		switch typ {
+		case protowire.BytesType:
+			v, m := protowire.ConsumeBytes(b)
+			b = b[m:]
+			switch num {
+			case fieldnum.OneofDescriptorProto_Name:
+				od.L0.FullName = appendFullName(sb, pd.FullName(), v)
+			case fieldnum.OneofDescriptorProto_Options:
+				rawOptions = appendOptions(rawOptions, v)
+			}
+		default:
+			m := protowire.ConsumeFieldValue(num, typ, b)
+			b = b[m:]
+		}
+	}
+	od.L1.Options = pf.builder.optionsUnmarshaler(&descopts.Oneof, rawOptions)
+}
+
+func (xd *Extension) unmarshalFull(b []byte, sb *strs.Builder) {
+	var rawTypeName []byte
+	var rawOptions []byte
+	xd.L2 = new(ExtensionL2)
+	for len(b) > 0 {
+		num, typ, n := protowire.ConsumeTag(b)
+		b = b[n:]
+		switch typ {
+		case protowire.VarintType:
+			v, m := protowire.ConsumeVarint(b)
+			b = b[m:]
+			switch num {
+			case fieldnum.FieldDescriptorProto_Proto3Optional:
+				xd.L2.IsProto3Optional = protowire.DecodeBool(v)
+			}
+		case protowire.BytesType:
+			v, m := protowire.ConsumeBytes(b)
+			b = b[m:]
+			switch num {
+			case fieldnum.FieldDescriptorProto_JsonName:
+				xd.L2.JSONName.Init(sb.MakeString(v))
+			case fieldnum.FieldDescriptorProto_DefaultValue:
+				xd.L2.Default.val = pref.ValueOfBytes(v) // temporarily store as bytes; later resolved in resolveExtensions
+			case fieldnum.FieldDescriptorProto_TypeName:
+				rawTypeName = v
+			case fieldnum.FieldDescriptorProto_Options:
+				xd.unmarshalOptions(v)
+				rawOptions = appendOptions(rawOptions, v)
+			}
+		default:
+			m := protowire.ConsumeFieldValue(num, typ, b)
+			b = b[m:]
+		}
+	}
+	if rawTypeName != nil {
+		name := makeFullName(sb, rawTypeName)
+		switch xd.L1.Kind {
+		case pref.EnumKind:
+			xd.L2.Enum = PlaceholderEnum(name)
+		case pref.MessageKind, pref.GroupKind:
+			xd.L2.Message = PlaceholderMessage(name)
+		}
+	}
+	xd.L2.Options = xd.L0.ParentFile.builder.optionsUnmarshaler(&descopts.Field, rawOptions)
+}
+
+func (xd *Extension) unmarshalOptions(b []byte) {
+	for len(b) > 0 {
+		num, typ, n := protowire.ConsumeTag(b)
+		b = b[n:]
+		switch typ {
+		case protowire.VarintType:
+			v, m := protowire.ConsumeVarint(b)
+			b = b[m:]
+			switch num {
+			case fieldnum.FieldOptions_Packed:
+				xd.L2.IsPacked = protowire.DecodeBool(v)
+			}
+		default:
+			m := protowire.ConsumeFieldValue(num, typ, b)
+			b = b[m:]
+		}
+	}
+}
+
+func (sd *Service) unmarshalFull(b []byte, sb *strs.Builder) {
+	var rawMethods [][]byte
+	var rawOptions []byte
+	sd.L2 = new(ServiceL2)
+	for len(b) > 0 {
+		num, typ, n := protowire.ConsumeTag(b)
+		b = b[n:]
+		switch typ {
+		case protowire.BytesType:
+			v, m := protowire.ConsumeBytes(b)
+			b = b[m:]
+			switch num {
+			case fieldnum.ServiceDescriptorProto_Method:
+				rawMethods = append(rawMethods, v)
+			case fieldnum.ServiceDescriptorProto_Options:
+				rawOptions = appendOptions(rawOptions, v)
+			}
+		default:
+			m := protowire.ConsumeFieldValue(num, typ, b)
+			b = b[m:]
+		}
+	}
+	if len(rawMethods) > 0 {
+		sd.L2.Methods.List = make([]Method, len(rawMethods))
+		for i, b := range rawMethods {
+			sd.L2.Methods.List[i].unmarshalFull(b, sb, sd.L0.ParentFile, sd, i)
+		}
+	}
+	sd.L2.Options = sd.L0.ParentFile.builder.optionsUnmarshaler(&descopts.Service, rawOptions)
+}
+
+func (md *Method) unmarshalFull(b []byte, sb *strs.Builder, pf *File, pd pref.Descriptor, i int) {
+	md.L0.ParentFile = pf
+	md.L0.Parent = pd
+	md.L0.Index = i
+
+	var rawOptions []byte
+	for len(b) > 0 {
+		num, typ, n := protowire.ConsumeTag(b)
+		b = b[n:]
+		switch typ {
+		case protowire.VarintType:
+			v, m := protowire.ConsumeVarint(b)
+			b = b[m:]
+			switch num {
+			case fieldnum.MethodDescriptorProto_ClientStreaming:
+				md.L1.IsStreamingClient = protowire.DecodeBool(v)
+			case fieldnum.MethodDescriptorProto_ServerStreaming:
+				md.L1.IsStreamingServer = protowire.DecodeBool(v)
+			}
+		case protowire.BytesType:
+			v, m := protowire.ConsumeBytes(b)
+			b = b[m:]
+			switch num {
+			case fieldnum.MethodDescriptorProto_Name:
+				md.L0.FullName = appendFullName(sb, pd.FullName(), v)
+			case fieldnum.MethodDescriptorProto_InputType:
+				md.L1.Input = PlaceholderMessage(makeFullName(sb, v))
+			case fieldnum.MethodDescriptorProto_OutputType:
+				md.L1.Output = PlaceholderMessage(makeFullName(sb, v))
+			case fieldnum.MethodDescriptorProto_Options:
+				rawOptions = appendOptions(rawOptions, v)
+			}
+		default:
+			m := protowire.ConsumeFieldValue(num, typ, b)
+			b = b[m:]
+		}
+	}
+	md.L1.Options = pf.builder.optionsUnmarshaler(&descopts.Method, rawOptions)
+}
+
+// appendOptions appends src to dst, where the returned slice is never nil.
+// This is necessary to distinguish between empty and unpopulated options.
+func appendOptions(dst, src []byte) []byte {
+	if dst == nil {
+		dst = []byte{}
+	}
+	return append(dst, src...)
+}
+
+// optionsUnmarshaler constructs a lazy unmarshal function for an options message.
+//
+// The type of message to unmarshal to is passed as a pointer since the
+// vars in descopts may not yet be populated at the time this function is called.
+func (db *Builder) optionsUnmarshaler(p *pref.ProtoMessage, b []byte) func() pref.ProtoMessage {
+	if b == nil {
+		return nil
+	}
+	var opts pref.ProtoMessage
+	var once sync.Once
+	return func() pref.ProtoMessage {
+		once.Do(func() {
+			if *p == nil {
+				panic("Descriptor.Options called without importing the descriptor package")
+			}
+			opts = reflect.New(reflect.TypeOf(*p).Elem()).Interface().(pref.ProtoMessage)
+			if err := (proto.UnmarshalOptions{
+				AllowPartial: true,
+				Resolver:     db.TypeResolver,
+			}).Unmarshal(b, opts); err != nil {
+				panic(err)
+			}
+		})
+		return opts
+	}
+}

vendor/google.golang.org/protobuf/internal/filedesc/desc_list.go

@@ -0,0 +1,286 @@
+// Copyright 2019 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package filedesc
+
+import (
+	"fmt"
+	"math"
+	"sort"
+	"sync"
+
+	"google.golang.org/protobuf/encoding/protowire"
+	"google.golang.org/protobuf/internal/descfmt"
+	"google.golang.org/protobuf/internal/errors"
+	"google.golang.org/protobuf/internal/pragma"
+	"google.golang.org/protobuf/reflect/protoreflect"
+	pref "google.golang.org/protobuf/reflect/protoreflect"
+)
+
+type FileImports []pref.FileImport
+
+func (p *FileImports) Len() int                            { return len(*p) }
+func (p *FileImports) Get(i int) pref.FileImport           { return (*p)[i] }
+func (p *FileImports) Format(s fmt.State, r rune)          { descfmt.FormatList(s, r, p) }
+func (p *FileImports) ProtoInternal(pragma.DoNotImplement) {}
+
+type Names struct {
+	List []pref.Name
+	once sync.Once
+	has  map[pref.Name]int // protected by once
+}
+
+func (p *Names) Len() int                            { return len(p.List) }
+func (p *Names) Get(i int) pref.Name                 { return p.List[i] }
+func (p *Names) Has(s pref.Name) bool                { return p.lazyInit().has[s] > 0 }
+func (p *Names) Format(s fmt.State, r rune)          { descfmt.FormatList(s, r, p) }
+func (p *Names) ProtoInternal(pragma.DoNotImplement) {}
+func (p *Names) lazyInit() *Names {
+	p.once.Do(func() {
+		if len(p.List) > 0 {
+			p.has = make(map[pref.Name]int, len(p.List))
+			for _, s := range p.List {
+				p.has[s] = p.has[s] + 1
+			}
+		}
+	})
+	return p
+}
+
+// CheckValid reports any errors with the set of names with an error message
+// that completes the sentence: "ranges is invalid because it has ..."
+func (p *Names) CheckValid() error {
+	for s, n := range p.lazyInit().has {
+		switch {
+		case n > 1:
+			return errors.New("duplicate name: %q", s)
+		case false && !s.IsValid():
+			// NOTE: The C++ implementation does not validate the identifier.
+			// See https://github.com/protocolbuffers/protobuf/issues/6335.
+			return errors.New("invalid name: %q", s)
+		}
+	}
+	return nil
+}
+
+type EnumRanges struct {
+	List   [][2]pref.EnumNumber // start inclusive; end inclusive
+	once   sync.Once
+	sorted [][2]pref.EnumNumber // protected by once
+}
+
+func (p *EnumRanges) Len() int                     { return len(p.List) }
+func (p *EnumRanges) Get(i int) [2]pref.EnumNumber { return p.List[i] }
+func (p *EnumRanges) Has(n pref.EnumNumber) bool {
+	for ls := p.lazyInit().sorted; len(ls) > 0; {
+		i := len(ls) / 2
+		switch r := enumRange(ls[i]); {
+		case n < r.Start():
+			ls = ls[:i] // search lower
+		case n > r.End():
+			ls = ls[i+1:] // search upper
+		default:
+			return true
+		}
+	}
+	return false
+}
+func (p *EnumRanges) Format(s fmt.State, r rune)          { descfmt.FormatList(s, r, p) }
+func (p *EnumRanges) ProtoInternal(pragma.DoNotImplement) {}
+func (p *EnumRanges) lazyInit() *EnumRanges {
+	p.once.Do(func() {
+		p.sorted = append(p.sorted, p.List...)
+		sort.Slice(p.sorted, func(i, j int) bool {
+			return p.sorted[i][0] < p.sorted[j][0]
+		})
+	})
+	return p
+}
+
+// CheckValid reports any errors with the set of names with an error message
+// that completes the sentence: "ranges is invalid because it has ..."
+func (p *EnumRanges) CheckValid() error {
+	var rp enumRange
+	for i, r := range p.lazyInit().sorted {
+		r := enumRange(r)
+		switch {
+		case !(r.Start() <= r.End()):
+			return errors.New("invalid range: %v", r)
+		case !(rp.End() < r.Start()) && i > 0:
+			return errors.New("overlapping ranges: %v with %v", rp, r)
+		}
+		rp = r
+	}
+	return nil
+}
+
+type enumRange [2]protoreflect.EnumNumber
+
+func (r enumRange) Start() protoreflect.EnumNumber { return r[0] } // inclusive
+func (r enumRange) End() protoreflect.EnumNumber   { return r[1] } // inclusive
+func (r enumRange) String() string {
+	if r.Start() == r.End() {
+		return fmt.Sprintf("%d", r.Start())
+	}
+	return fmt.Sprintf("%d to %d", r.Start(), r.End())
+}
+
+type FieldRanges struct {
+	List   [][2]pref.FieldNumber // start inclusive; end exclusive
+	once   sync.Once
+	sorted [][2]pref.FieldNumber // protected by once
+}
+
+func (p *FieldRanges) Len() int                      { return len(p.List) }
+func (p *FieldRanges) Get(i int) [2]pref.FieldNumber { return p.List[i] }
+func (p *FieldRanges) Has(n pref.FieldNumber) bool {
+	for ls := p.lazyInit().sorted; len(ls) > 0; {
+		i := len(ls) / 2
+		switch r := fieldRange(ls[i]); {
+		case n < r.Start():
+			ls = ls[:i] // search lower
+		case n > r.End():
+			ls = ls[i+1:] // search upper
+		default:
+			return true
+		}
+	}
+	return false
+}
+func (p *FieldRanges) Format(s fmt.State, r rune)          { descfmt.FormatList(s, r, p) }
+func (p *FieldRanges) ProtoInternal(pragma.DoNotImplement) {}
+func (p *FieldRanges) lazyInit() *FieldRanges {
+	p.once.Do(func() {
+		p.sorted = append(p.sorted, p.List...)
+		sort.Slice(p.sorted, func(i, j int) bool {
+			return p.sorted[i][0] < p.sorted[j][0]
+		})
+	})
+	return p
+}
+
+// CheckValid reports any errors with the set of ranges with an error message
+// that completes the sentence: "ranges is invalid because it has ..."
+func (p *FieldRanges) CheckValid(isMessageSet bool) error {
+	var rp fieldRange
+	for i, r := range p.lazyInit().sorted {
+		r := fieldRange(r)
+		switch {
+		case !isValidFieldNumber(r.Start(), isMessageSet):
+			return errors.New("invalid field number: %d", r.Start())
+		case !isValidFieldNumber(r.End(), isMessageSet):
+			return errors.New("invalid field number: %d", r.End())
+		case !(r.Start() <= r.End()):
+			return errors.New("invalid range: %v", r)
+		case !(rp.End() < r.Start()) && i > 0:
+			return errors.New("overlapping ranges: %v with %v", rp, r)
+		}
+		rp = r
+	}
+	return nil
+}
+
+// isValidFieldNumber reports whether the field number is valid.
+// Unlike the FieldNumber.IsValid method, it allows ranges that cover the
+// reserved number range.
+func isValidFieldNumber(n protoreflect.FieldNumber, isMessageSet bool) bool {
+	if isMessageSet {
+		return protowire.MinValidNumber <= n && n <= math.MaxInt32
+	}
+	return protowire.MinValidNumber <= n && n <= protowire.MaxValidNumber
+}
+
+// CheckOverlap reports an error if p and q overlap.
+func (p *FieldRanges) CheckOverlap(q *FieldRanges) error {
+	rps := p.lazyInit().sorted
+	rqs := q.lazyInit().sorted
+	for pi, qi := 0, 0; pi < len(rps) && qi < len(rqs); {
+		rp := fieldRange(rps[pi])
+		rq := fieldRange(rqs[qi])
+		if !(rp.End() < rq.Start() || rq.End() < rp.Start()) {
+			return errors.New("overlapping ranges: %v with %v", rp, rq)
+		}
+		if rp.Start() < rq.Start() {
+			pi++
+		} else {
+			qi++
+		}
+	}
+	return nil
+}
+
+type fieldRange [2]protoreflect.FieldNumber
+
+func (r fieldRange) Start() protoreflect.FieldNumber { return r[0] }     // inclusive
+func (r fieldRange) End() protoreflect.FieldNumber   { return r[1] - 1 } // inclusive
+func (r fieldRange) String() string {
+	if r.Start() == r.End() {
+		return fmt.Sprintf("%d", r.Start())
+	}
+	return fmt.Sprintf("%d to %d", r.Start(), r.End())
+}
+
+type FieldNumbers struct {
+	List []pref.FieldNumber
+	once sync.Once
+	has  map[pref.FieldNumber]struct{} // protected by once
+}
+
+func (p *FieldNumbers) Len() int                   { return len(p.List) }
+func (p *FieldNumbers) Get(i int) pref.FieldNumber { return p.List[i] }
+func (p *FieldNumbers) Has(n pref.FieldNumber) bool {
+	p.once.Do(func() {
+		if len(p.List) > 0 {
+			p.has = make(map[pref.FieldNumber]struct{}, len(p.List))
+			for _, n := range p.List {
+				p.has[n] = struct{}{}
+			}
+		}
+	})
+	_, ok := p.has[n]
+	return ok
+}
+func (p *FieldNumbers) Format(s fmt.State, r rune)          { descfmt.FormatList(s, r, p) }
+func (p *FieldNumbers) ProtoInternal(pragma.DoNotImplement) {}
+
+type OneofFields struct {
+	List   []pref.FieldDescriptor
+	once   sync.Once
+	byName map[pref.Name]pref.FieldDescriptor        // protected by once
+	byJSON map[string]pref.FieldDescriptor           // protected by once
+	byNum  map[pref.FieldNumber]pref.FieldDescriptor // protected by once
+}
+
+func (p *OneofFields) Len() int                                         { return len(p.List) }
+func (p *OneofFields) Get(i int) pref.FieldDescriptor                   { return p.List[i] }
+func (p *OneofFields) ByName(s pref.Name) pref.FieldDescriptor          { return p.lazyInit().byName[s] }
+func (p *OneofFields) ByJSONName(s string) pref.FieldDescriptor         { return p.lazyInit().byJSON[s] }
+func (p *OneofFields) ByNumber(n pref.FieldNumber) pref.FieldDescriptor { return p.lazyInit().byNum[n] }
+func (p *OneofFields) Format(s fmt.State, r rune)                       { descfmt.FormatList(s, r, p) }
+func (p *OneofFields) ProtoInternal(pragma.DoNotImplement)              {}
+
+func (p *OneofFields) lazyInit() *OneofFields {
+	p.once.Do(func() {
+		if len(p.List) > 0 {
+			p.byName = make(map[pref.Name]pref.FieldDescriptor, len(p.List))
+			p.byJSON = make(map[string]pref.FieldDescriptor, len(p.List))
+			p.byNum = make(map[pref.FieldNumber]pref.FieldDescriptor, len(p.List))
+			for _, f := range p.List {
+				// Field names and numbers are guaranteed to be unique.
+				p.byName[f.Name()] = f
+				p.byJSON[f.JSONName()] = f
+				p.byNum[f.Number()] = f
+			}
+		}
+	})
+	return p
+}
+
+type SourceLocations struct {
+	List []pref.SourceLocation
+}
+
+func (p *SourceLocations) Len() int                            { return len(p.List) }
+func (p *SourceLocations) Get(i int) pref.SourceLocation       { return p.List[i] }
+func (p *SourceLocations) ProtoInternal(pragma.DoNotImplement) {}

vendor/google.golang.org/protobuf/internal/filedesc/desc_list_gen.go

@@ -0,0 +1,345 @@
+// Copyright 2018 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// Code generated by generate-types. DO NOT EDIT.
+
+package filedesc
+
+import (
+	"fmt"
+	"sync"
+
+	"google.golang.org/protobuf/internal/descfmt"
+	"google.golang.org/protobuf/internal/pragma"
+	"google.golang.org/protobuf/reflect/protoreflect"
+)
+
+type Enums struct {
+	List   []Enum
+	once   sync.Once
+	byName map[protoreflect.Name]*Enum // protected by once
+}
+
+func (p *Enums) Len() int {
+	return len(p.List)
+}
+func (p *Enums) Get(i int) protoreflect.EnumDescriptor {
+	return &p.List[i]
+}
+func (p *Enums) ByName(s protoreflect.Name) protoreflect.EnumDescriptor {
+	if d := p.lazyInit().byName[s]; d != nil {
+		return d
+	}
+	return nil
+}
+func (p *Enums) Format(s fmt.State, r rune) {
+	descfmt.FormatList(s, r, p)
+}
+func (p *Enums) ProtoInternal(pragma.DoNotImplement) {}
+func (p *Enums) lazyInit() *Enums {
+	p.once.Do(func() {
+		if len(p.List) > 0 {
+			p.byName = make(map[protoreflect.Name]*Enum, len(p.List))
+			for i := range p.List {
+				d := &p.List[i]
+				if _, ok := p.byName[d.Name()]; !ok {
+					p.byName[d.Name()] = d
+				}
+			}
+		}
+	})
+	return p
+}
+
+type EnumValues struct {
+	List   []EnumValue
+	once   sync.Once
+	byName map[protoreflect.Name]*EnumValue       // protected by once
+	byNum  map[protoreflect.EnumNumber]*EnumValue // protected by once
+}
+
+func (p *EnumValues) Len() int {
+	return len(p.List)
+}
+func (p *EnumValues) Get(i int) protoreflect.EnumValueDescriptor {
+	return &p.List[i]
+}
+func (p *EnumValues) ByName(s protoreflect.Name) protoreflect.EnumValueDescriptor {
+	if d := p.lazyInit().byName[s]; d != nil {
+		return d
+	}
+	return nil
+}
+func (p *EnumValues) ByNumber(n protoreflect.EnumNumber) protoreflect.EnumValueDescriptor {
+	if d := p.lazyInit().byNum[n]; d != nil {
+		return d
+	}
+	return nil
+}
+func (p *EnumValues) Format(s fmt.State, r rune) {
+	descfmt.FormatList(s, r, p)
+}
+func (p *EnumValues) ProtoInternal(pragma.DoNotImplement) {}
+func (p *EnumValues) lazyInit() *EnumValues {
+	p.once.Do(func() {
+		if len(p.List) > 0 {
+			p.byName = make(map[protoreflect.Name]*EnumValue, len(p.List))
+			p.byNum = make(map[protoreflect.EnumNumber]*EnumValue, len(p.List))
+			for i := range p.List {
+				d := &p.List[i]
+				if _, ok := p.byName[d.Name()]; !ok {
+					p.byName[d.Name()] = d
+				}
+				if _, ok := p.byNum[d.Number()]; !ok {
+					p.byNum[d.Number()] = d
+				}
+			}
+		}
+	})
+	return p
+}
+
+type Messages struct {
+	List   []Message
+	once   sync.Once
+	byName map[protoreflect.Name]*Message // protected by once
+}
+
+func (p *Messages) Len() int {
+	return len(p.List)
+}
+func (p *Messages) Get(i int) protoreflect.MessageDescriptor {
+	return &p.List[i]
+}
+func (p *Messages) ByName(s protoreflect.Name) protoreflect.MessageDescriptor {
+	if d := p.lazyInit().byName[s]; d != nil {
+		return d
+	}
+	return nil
+}
+func (p *Messages) Format(s fmt.State, r rune) {
+	descfmt.FormatList(s, r, p)
+}
+func (p *Messages) ProtoInternal(pragma.DoNotImplement) {}
+func (p *Messages) lazyInit() *Messages {
+	p.once.Do(func() {
+		if len(p.List) > 0 {
+			p.byName = make(map[protoreflect.Name]*Message, len(p.List))
+			for i := range p.List {
+				d := &p.List[i]
+				if _, ok := p.byName[d.Name()]; !ok {
+					p.byName[d.Name()] = d
+				}
+			}
+		}
+	})
+	return p
+}
+
+type Fields struct {
+	List   []Field
+	once   sync.Once
+	byName map[protoreflect.Name]*Field        // protected by once
+	byJSON map[string]*Field                   // protected by once
+	byNum  map[protoreflect.FieldNumber]*Field // protected by once
+}
+
+func (p *Fields) Len() int {
+	return len(p.List)
+}
+func (p *Fields) Get(i int) protoreflect.FieldDescriptor {
+	return &p.List[i]
+}
+func (p *Fields) ByName(s protoreflect.Name) protoreflect.FieldDescriptor {
+	if d := p.lazyInit().byName[s]; d != nil {
+		return d
+	}
+	return nil
+}
+func (p *Fields) ByJSONName(s string) protoreflect.FieldDescriptor {
+	if d := p.lazyInit().byJSON[s]; d != nil {
+		return d
+	}
+	return nil
+}
+func (p *Fields) ByNumber(n protoreflect.FieldNumber) protoreflect.FieldDescriptor {
+	if d := p.lazyInit().byNum[n]; d != nil {
+		return d
+	}
+	return nil
+}
+func (p *Fields) Format(s fmt.State, r rune) {
+	descfmt.FormatList(s, r, p)
+}
+func (p *Fields) ProtoInternal(pragma.DoNotImplement) {}
+func (p *Fields) lazyInit() *Fields {
+	p.once.Do(func() {
+		if len(p.List) > 0 {
+			p.byName = make(map[protoreflect.Name]*Field, len(p.List))
+			p.byJSON = make(map[string]*Field, len(p.List))
+			p.byNum = make(map[protoreflect.FieldNumber]*Field, len(p.List))
+			for i := range p.List {
+				d := &p.List[i]
+				if _, ok := p.byName[d.Name()]; !ok {
+					p.byName[d.Name()] = d
+				}
+				if _, ok := p.byJSON[d.JSONName()]; !ok {
+					p.byJSON[d.JSONName()] = d
+				}
+				if _, ok := p.byNum[d.Number()]; !ok {
+					p.byNum[d.Number()] = d
+				}
+			}
+		}
+	})
+	return p
+}
+
+type Oneofs struct {
+	List   []Oneof
+	once   sync.Once
+	byName map[protoreflect.Name]*Oneof // protected by once
+}
+
+func (p *Oneofs) Len() int {
+	return len(p.List)
+}
+func (p *Oneofs) Get(i int) protoreflect.OneofDescriptor {
+	return &p.List[i]
+}
+func (p *Oneofs) ByName(s protoreflect.Name) protoreflect.OneofDescriptor {
+	if d := p.lazyInit().byName[s]; d != nil {
+		return d
+	}
+	return nil
+}
+func (p *Oneofs) Format(s fmt.State, r rune) {
+	descfmt.FormatList(s, r, p)
+}
+func (p *Oneofs) ProtoInternal(pragma.DoNotImplement) {}
+func (p *Oneofs) lazyInit() *Oneofs {
+	p.once.Do(func() {
+		if len(p.List) > 0 {
+			p.byName = make(map[protoreflect.Name]*Oneof, len(p.List))
+			for i := range p.List {
+				d := &p.List[i]
+				if _, ok := p.byName[d.Name()]; !ok {
+					p.byName[d.Name()] = d
+				}
+			}
+		}
+	})
+	return p
+}
+
+type Extensions struct {
+	List   []Extension
+	once   sync.Once
+	byName map[protoreflect.Name]*Extension // protected by once
+}
+
+func (p *Extensions) Len() int {
+	return len(p.List)
+}
+func (p *Extensions) Get(i int) protoreflect.ExtensionDescriptor {
+	return &p.List[i]
+}
+func (p *Extensions) ByName(s protoreflect.Name) protoreflect.ExtensionDescriptor {
+	if d := p.lazyInit().byName[s]; d != nil {
+		return d
+	}
+	return nil
+}
+func (p *Extensions) Format(s fmt.State, r rune) {
+	descfmt.FormatList(s, r, p)
+}
+func (p *Extensions) ProtoInternal(pragma.DoNotImplement) {}
+func (p *Extensions) lazyInit() *Extensions {
+	p.once.Do(func() {
+		if len(p.List) > 0 {
+			p.byName = make(map[protoreflect.Name]*Extension, len(p.List))
+			for i := range p.List {
+				d := &p.List[i]
+				if _, ok := p.byName[d.Name()]; !ok {
+					p.byName[d.Name()] = d
+				}
+			}
+		}
+	})
+	return p
+}
+
+type Services struct {
+	List   []Service
+	once   sync.Once
+	byName map[protoreflect.Name]*Service // protected by once
+}
+
+func (p *Services) Len() int {
+	return len(p.List)
+}
+func (p *Services) Get(i int) protoreflect.ServiceDescriptor {
+	return &p.List[i]
+}
+func (p *Services) ByName(s protoreflect.Name) protoreflect.ServiceDescriptor {
+	if d := p.lazyInit().byName[s]; d != nil {
+		return d
+	}
+	return nil
+}
+func (p *Services) Format(s fmt.State, r rune) {
+	descfmt.FormatList(s, r, p)
+}
+func (p *Services) ProtoInternal(pragma.DoNotImplement) {}
+func (p *Services) lazyInit() *Services {
+	p.once.Do(func() {
+		if len(p.List) > 0 {
+			p.byName = make(map[protoreflect.Name]*Service, len(p.List))
+			for i := range p.List {
+				d := &p.List[i]
+				if _, ok := p.byName[d.Name()]; !ok {
+					p.byName[d.Name()] = d
+				}
+			}
+		}
+	})
+	return p
+}
+
+type Methods struct {
+	List   []Method
+	once   sync.Once
+	byName map[protoreflect.Name]*Method // protected by once
+}
+
+func (p *Methods) Len() int {
+	return len(p.List)
+}
+func (p *Methods) Get(i int) protoreflect.MethodDescriptor {
+	return &p.List[i]
+}
+func (p *Methods) ByName(s protoreflect.Name) protoreflect.MethodDescriptor {
+	if d := p.lazyInit().byName[s]; d != nil {
+		return d
+	}
+	return nil
+}
+func (p *Methods) Format(s fmt.State, r rune) {
+	descfmt.FormatList(s, r, p)
+}
+func (p *Methods) ProtoInternal(pragma.DoNotImplement) {}
+func (p *Methods) lazyInit() *Methods {
+	p.once.Do(func() {
+		if len(p.List) > 0 {
+			p.byName = make(map[protoreflect.Name]*Method, len(p.List))
+			for i := range p.List {
+				d := &p.List[i]
+				if _, ok := p.byName[d.Name()]; !ok {
+					p.byName[d.Name()] = d
+				}
+			}
+		}
+	})
+	return p
+}

vendor/google.golang.org/protobuf/internal/filedesc/placeholder.go

@@ -0,0 +1,107 @@
+// Copyright 2019 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package filedesc
+
+import (
+	"google.golang.org/protobuf/internal/descopts"
+	"google.golang.org/protobuf/internal/pragma"
+	pref "google.golang.org/protobuf/reflect/protoreflect"
+)
+
+var (
+	emptyNames           = new(Names)
+	emptyEnumRanges      = new(EnumRanges)
+	emptyFieldRanges     = new(FieldRanges)
+	emptyFieldNumbers    = new(FieldNumbers)
+	emptySourceLocations = new(SourceLocations)
+
+	emptyFiles      = new(FileImports)
+	emptyMessages   = new(Messages)
+	emptyFields     = new(Fields)
+	emptyOneofs     = new(Oneofs)
+	emptyEnums      = new(Enums)
+	emptyEnumValues = new(EnumValues)
+	emptyExtensions = new(Extensions)
+	emptyServices   = new(Services)
+)
+
+// PlaceholderFile is a placeholder, representing only the file path.
+type PlaceholderFile string
+
+func (f PlaceholderFile) ParentFile() pref.FileDescriptor       { return f }
+func (f PlaceholderFile) Parent() pref.Descriptor               { return nil }
+func (f PlaceholderFile) Index() int                            { return 0 }
+func (f PlaceholderFile) Syntax() pref.Syntax                   { return 0 }
+func (f PlaceholderFile) Name() pref.Name                       { return "" }
+func (f PlaceholderFile) FullName() pref.FullName               { return "" }
+func (f PlaceholderFile) IsPlaceholder() bool                   { return true }
+func (f PlaceholderFile) Options() pref.ProtoMessage            { return descopts.File }
+func (f PlaceholderFile) Path() string                          { return string(f) }
+func (f PlaceholderFile) Package() pref.FullName                { return "" }
+func (f PlaceholderFile) Imports() pref.FileImports             { return emptyFiles }
+func (f PlaceholderFile) Messages() pref.MessageDescriptors     { return emptyMessages }
+func (f PlaceholderFile) Enums() pref.EnumDescriptors           { return emptyEnums }
+func (f PlaceholderFile) Extensions() pref.ExtensionDescriptors { return emptyExtensions }
+func (f PlaceholderFile) Services() pref.ServiceDescriptors     { return emptyServices }
+func (f PlaceholderFile) SourceLocations() pref.SourceLocations { return emptySourceLocations }
+func (f PlaceholderFile) ProtoType(pref.FileDescriptor)         { return }
+func (f PlaceholderFile) ProtoInternal(pragma.DoNotImplement)   { return }
+
+// PlaceholderEnum is a placeholder, representing only the full name.
+type PlaceholderEnum pref.FullName
+
+func (e PlaceholderEnum) ParentFile() pref.FileDescriptor     { return nil }
+func (e PlaceholderEnum) Parent() pref.Descriptor             { return nil }
+func (e PlaceholderEnum) Index() int                          { return 0 }
+func (e PlaceholderEnum) Syntax() pref.Syntax                 { return 0 }
+func (e PlaceholderEnum) Name() pref.Name                     { return pref.FullName(e).Name() }
+func (e PlaceholderEnum) FullName() pref.FullName             { return pref.FullName(e) }
+func (e PlaceholderEnum) IsPlaceholder() bool                 { return true }
+func (e PlaceholderEnum) Options() pref.ProtoMessage          { return descopts.Enum }
+func (e PlaceholderEnum) Values() pref.EnumValueDescriptors   { return emptyEnumValues }
+func (e PlaceholderEnum) ReservedNames() pref.Names           { return emptyNames }
+func (e PlaceholderEnum) ReservedRanges() pref.EnumRanges     { return emptyEnumRanges }
+func (e PlaceholderEnum) ProtoType(pref.EnumDescriptor)       { return }
+func (e PlaceholderEnum) ProtoInternal(pragma.DoNotImplement) { return }
+
+// PlaceholderEnumValue is a placeholder, representing only the full name.
+type PlaceholderEnumValue pref.FullName
+
+func (e PlaceholderEnumValue) ParentFile() pref.FileDescriptor     { return nil }
+func (e PlaceholderEnumValue) Parent() pref.Descriptor             { return nil }
+func (e PlaceholderEnumValue) Index() int                          { return 0 }
+func (e PlaceholderEnumValue) Syntax() pref.Syntax                 { return 0 }
+func (e PlaceholderEnumValue) Name() pref.Name                     { return pref.FullName(e).Name() }
+func (e PlaceholderEnumValue) FullName() pref.FullName             { return pref.FullName(e) }
+func (e PlaceholderEnumValue) IsPlaceholder() bool                 { return true }
+func (e PlaceholderEnumValue) Options() pref.ProtoMessage          { return descopts.EnumValue }
+func (e PlaceholderEnumValue) Number() pref.EnumNumber             { return 0 }
+func (e PlaceholderEnumValue) ProtoType(pref.EnumValueDescriptor)  { return }
+func (e PlaceholderEnumValue) ProtoInternal(pragma.DoNotImplement) { return }
+
+// PlaceholderMessage is a placeholder, representing only the full name.
+type PlaceholderMessage pref.FullName
+
+func (m PlaceholderMessage) ParentFile() pref.FileDescriptor             { return nil }
+func (m PlaceholderMessage) Parent() pref.Descriptor                     { return nil }
+func (m PlaceholderMessage) Index() int                                  { return 0 }
+func (m PlaceholderMessage) Syntax() pref.Syntax                         { return 0 }
+func (m PlaceholderMessage) Name() pref.Name                             { return pref.FullName(m).Name() }
+func (m PlaceholderMessage) FullName() pref.FullName                     { return pref.FullName(m) }
+func (m PlaceholderMessage) IsPlaceholder() bool                         { return true }
+func (m PlaceholderMessage) Options() pref.ProtoMessage                  { return descopts.Message }
+func (m PlaceholderMessage) IsMapEntry() bool                            { return false }
+func (m PlaceholderMessage) Fields() pref.FieldDescriptors               { return emptyFields }
+func (m PlaceholderMessage) Oneofs() pref.OneofDescriptors               { return emptyOneofs }
+func (m PlaceholderMessage) ReservedNames() pref.Names                   { return emptyNames }
+func (m PlaceholderMessage) ReservedRanges() pref.FieldRanges            { return emptyFieldRanges }
+func (m PlaceholderMessage) RequiredNumbers() pref.FieldNumbers          { return emptyFieldNumbers }
+func (m PlaceholderMessage) ExtensionRanges() pref.FieldRanges           { return emptyFieldRanges }
+func (m PlaceholderMessage) ExtensionRangeOptions(int) pref.ProtoMessage { panic("index out of range") }
+func (m PlaceholderMessage) Messages() pref.MessageDescriptors           { return emptyMessages }
+func (m PlaceholderMessage) Enums() pref.EnumDescriptors                 { return emptyEnums }
+func (m PlaceholderMessage) Extensions() pref.ExtensionDescriptors       { return emptyExtensions }
+func (m PlaceholderMessage) ProtoType(pref.MessageDescriptor)            { return }
+func (m PlaceholderMessage) ProtoInternal(pragma.DoNotImplement)         { return }

vendor/google.golang.org/protobuf/internal/filetype/build.go

@@ -0,0 +1,297 @@
+// Copyright 2019 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// Package filetype provides functionality for wrapping descriptors
+// with Go type information.
+package filetype
+
+import (
+	"reflect"
+
+	"google.golang.org/protobuf/internal/descopts"
+	fdesc "google.golang.org/protobuf/internal/filedesc"
+	pimpl "google.golang.org/protobuf/internal/impl"
+	pref "google.golang.org/protobuf/reflect/protoreflect"
+	preg "google.golang.org/protobuf/reflect/protoregistry"
+)
+
+// Builder constructs type descriptors from a raw file descriptor
+// and associated Go types for each enum and message declaration.
+//
+//
+// Flattened Ordering
+//
+// The protobuf type system represents declarations as a tree. Certain nodes in
+// the tree require us to either associate it with a concrete Go type or to
+// resolve a dependency, which is information that must be provided separately
+// since it cannot be derived from the file descriptor alone.
+//
+// However, representing a tree as Go literals is difficult to simply do in a
+// space and time efficient way. Thus, we store them as a flattened list of
+// objects where the serialization order from the tree-based form is important.
+//
+// The "flattened ordering" is defined as a tree traversal of all enum, message,
+// extension, and service declarations using the following algorithm:
+//
+//	def VisitFileDecls(fd):
+//		for e in fd.Enums:      yield e
+//		for m in fd.Messages:   yield m
+//		for x in fd.Extensions: yield x
+//		for s in fd.Services:   yield s
+//		for m in fd.Messages:   yield from VisitMessageDecls(m)
+//
+//	def VisitMessageDecls(md):
+//		for e in md.Enums:      yield e
+//		for m in md.Messages:   yield m
+//		for x in md.Extensions: yield x
+//		for m in md.Messages:   yield from VisitMessageDecls(m)
+//
+// The traversal starts at the root file descriptor and yields each direct
+// declaration within each node before traversing into sub-declarations
+// that children themselves may have.
+type Builder struct {
+	// File is the underlying file descriptor builder.
+	File fdesc.Builder
+
+	// GoTypes is a unique set of the Go types for all declarations and
+	// dependencies. Each type is represented as a zero value of the Go type.
+	//
+	// Declarations are Go types generated for enums and messages directly
+	// declared (not publicly imported) in the proto source file.
+	// Messages for map entries are accounted for, but represented by nil.
+	// Enum declarations in "flattened ordering" come first, followed by
+	// message declarations in "flattened ordering".
+	//
+	// Dependencies are Go types for enums or messages referenced by
+	// message fields (excluding weak fields), for parent extended messages of
+	// extension fields, for enums or messages referenced by extension fields,
+	// and for input and output messages referenced by service methods.
+	// Dependencies must come after declarations, but the ordering of
+	// dependencies themselves is unspecified.
+	GoTypes []interface{}
+
+	// DependencyIndexes is an ordered list of indexes into GoTypes for the
+	// dependencies of messages, extensions, or services.
+	//
+	// There are 5 sub-lists in "flattened ordering" concatenated back-to-back:
+	//	0. Message field dependencies: list of the enum or message type
+	//	referred to by every message field.
+	//	1. Extension field targets: list of the extended parent message of
+	//	every extension.
+	//	2. Extension field dependencies: list of the enum or message type
+	//	referred to by every extension field.
+	//	3. Service method inputs: list of the input message type
+	//	referred to by every service method.
+	//	4. Service method outputs: list of the output message type
+	//	referred to by every service method.
+	//
+	// The offset into DependencyIndexes for the start of each sub-list
+	// is appended to the end in reverse order.
+	DependencyIndexes []int32
+
+	// EnumInfos is a list of enum infos in "flattened ordering".
+	EnumInfos []pimpl.EnumInfo
+
+	// MessageInfos is a list of message infos in "flattened ordering".
+	// If provided, the GoType and PBType for each element is populated.
+	//
+	// Requirement: len(MessageInfos) == len(Build.Messages)
+	MessageInfos []pimpl.MessageInfo
+
+	// ExtensionInfos is a list of extension infos in "flattened ordering".
+	// Each element is initialized and registered with the protoregistry package.
+	//
+	// Requirement: len(LegacyExtensions) == len(Build.Extensions)
+	ExtensionInfos []pimpl.ExtensionInfo
+
+	// TypeRegistry is the registry to register each type descriptor.
+	// If nil, it uses protoregistry.GlobalTypes.
+	TypeRegistry interface {
+		RegisterMessage(pref.MessageType) error
+		RegisterEnum(pref.EnumType) error
+		RegisterExtension(pref.ExtensionType) error
+	}
+}
+
+// Out is the output of the builder.
+type Out struct {
+	File pref.FileDescriptor
+}
+
+func (tb Builder) Build() (out Out) {
+	// Replace the resolver with one that resolves dependencies by index,
+	// which is faster and more reliable than relying on the global registry.
+	if tb.File.FileRegistry == nil {
+		tb.File.FileRegistry = preg.GlobalFiles
+	}
+	tb.File.FileRegistry = &resolverByIndex{
+		goTypes:      tb.GoTypes,
+		depIdxs:      tb.DependencyIndexes,
+		fileRegistry: tb.File.FileRegistry,
+	}
+
+	// Initialize registry if unpopulated.
+	if tb.TypeRegistry == nil {
+		tb.TypeRegistry = preg.GlobalTypes
+	}
+
+	fbOut := tb.File.Build()
+	out.File = fbOut.File
+
+	// Process enums.
+	enumGoTypes := tb.GoTypes[:len(fbOut.Enums)]
+	if len(tb.EnumInfos) != len(fbOut.Enums) {
+		panic("mismatching enum lengths")
+	}
+	if len(fbOut.Enums) > 0 {
+		for i := range fbOut.Enums {
+			tb.EnumInfos[i] = pimpl.EnumInfo{
+				GoReflectType: reflect.TypeOf(enumGoTypes[i]),
+				Desc:          &fbOut.Enums[i],
+			}
+			// Register enum types.
+			if err := tb.TypeRegistry.RegisterEnum(&tb.EnumInfos[i]); err != nil {
+				panic(err)
+			}
+		}
+	}
+
+	// Process messages.
+	messageGoTypes := tb.GoTypes[len(fbOut.Enums):][:len(fbOut.Messages)]
+	if len(tb.MessageInfos) != len(fbOut.Messages) {
+		panic("mismatching message lengths")
+	}
+	if len(fbOut.Messages) > 0 {
+		for i := range fbOut.Messages {
+			if messageGoTypes[i] == nil {
+				continue // skip map entry
+			}
+
+			tb.MessageInfos[i].GoReflectType = reflect.TypeOf(messageGoTypes[i])
+			tb.MessageInfos[i].Desc = &fbOut.Messages[i]
+
+			// Register message types.
+			if err := tb.TypeRegistry.RegisterMessage(&tb.MessageInfos[i]); err != nil {
+				panic(err)
+			}
+		}
+
+		// As a special-case for descriptor.proto,
+		// locally register concrete message type for the options.
+		if out.File.Path() == "google/protobuf/descriptor.proto" && out.File.Package() == "google.protobuf" {
+			for i := range fbOut.Messages {
+				switch fbOut.Messages[i].Name() {
+				case "FileOptions":
+					descopts.File = messageGoTypes[i].(pref.ProtoMessage)
+				case "EnumOptions":
+					descopts.Enum = messageGoTypes[i].(pref.ProtoMessage)
+				case "EnumValueOptions":
+					descopts.EnumValue = messageGoTypes[i].(pref.ProtoMessage)
+				case "MessageOptions":
+					descopts.Message = messageGoTypes[i].(pref.ProtoMessage)
+				case "FieldOptions":
+					descopts.Field = messageGoTypes[i].(pref.ProtoMessage)
+				case "OneofOptions":
+					descopts.Oneof = messageGoTypes[i].(pref.ProtoMessage)
+				case "ExtensionRangeOptions":
+					descopts.ExtensionRange = messageGoTypes[i].(pref.ProtoMessage)
+				case "ServiceOptions":
+					descopts.Service = messageGoTypes[i].(pref.ProtoMessage)
+				case "MethodOptions":
+					descopts.Method = messageGoTypes[i].(pref.ProtoMessage)
+				}
+			}
+		}
+	}
+
+	// Process extensions.
+	if len(tb.ExtensionInfos) != len(fbOut.Extensions) {
+		panic("mismatching extension lengths")
+	}
+	var depIdx int32
+	for i := range fbOut.Extensions {
+		// For enum and message kinds, determine the referent Go type so
+		// that we can construct their constructors.
+		const listExtDeps = 2
+		var goType reflect.Type
+		switch fbOut.Extensions[i].L1.Kind {
+		case pref.EnumKind:
+			j := depIdxs.Get(tb.DependencyIndexes, listExtDeps, depIdx)
+			goType = reflect.TypeOf(tb.GoTypes[j])
+			depIdx++
+		case pref.MessageKind, pref.GroupKind:
+			j := depIdxs.Get(tb.DependencyIndexes, listExtDeps, depIdx)
+			goType = reflect.TypeOf(tb.GoTypes[j])
+			depIdx++
+		default:
+			goType = goTypeForPBKind[fbOut.Extensions[i].L1.Kind]
+		}
+		if fbOut.Extensions[i].IsList() {
+			goType = reflect.SliceOf(goType)
+		}
+
+		pimpl.InitExtensionInfo(&tb.ExtensionInfos[i], &fbOut.Extensions[i], goType)
+
+		// Register extension types.
+		if err := tb.TypeRegistry.RegisterExtension(&tb.ExtensionInfos[i]); err != nil {
+			panic(err)
+		}
+	}
+
+	return out
+}
+
+var goTypeForPBKind = map[pref.Kind]reflect.Type{
+	pref.BoolKind:     reflect.TypeOf(bool(false)),
+	pref.Int32Kind:    reflect.TypeOf(int32(0)),
+	pref.Sint32Kind:   reflect.TypeOf(int32(0)),
+	pref.Sfixed32Kind: reflect.TypeOf(int32(0)),
+	pref.Int64Kind:    reflect.TypeOf(int64(0)),
+	pref.Sint64Kind:   reflect.TypeOf(int64(0)),
+	pref.Sfixed64Kind: reflect.TypeOf(int64(0)),
+	pref.Uint32Kind:   reflect.TypeOf(uint32(0)),
+	pref.Fixed32Kind:  reflect.TypeOf(uint32(0)),
+	pref.Uint64Kind:   reflect.TypeOf(uint64(0)),
+	pref.Fixed64Kind:  reflect.TypeOf(uint64(0)),
+	pref.FloatKind:    reflect.TypeOf(float32(0)),
+	pref.DoubleKind:   reflect.TypeOf(float64(0)),
+	pref.StringKind:   reflect.TypeOf(string("")),
+	pref.BytesKind:    reflect.TypeOf([]byte(nil)),
+}
+
+type depIdxs []int32
+
+// Get retrieves the jth element of the ith sub-list.
+func (x depIdxs) Get(i, j int32) int32 {
+	return x[x[int32(len(x))-i-1]+j]
+}
+
+type (
+	resolverByIndex struct {
+		goTypes []interface{}
+		depIdxs depIdxs
+		fileRegistry
+	}
+	fileRegistry interface {
+		FindFileByPath(string) (pref.FileDescriptor, error)
+		FindDescriptorByName(pref.FullName) (pref.Descriptor, error)
+		RegisterFile(pref.FileDescriptor) error
+	}
+)
+
+func (r *resolverByIndex) FindEnumByIndex(i, j int32, es []fdesc.Enum, ms []fdesc.Message) pref.EnumDescriptor {
+	if depIdx := int(r.depIdxs.Get(i, j)); int(depIdx) < len(es)+len(ms) {
+		return &es[depIdx]
+	} else {
+		return pimpl.Export{}.EnumDescriptorOf(r.goTypes[depIdx])
+	}
+}
+
+func (r *resolverByIndex) FindMessageByIndex(i, j int32, es []fdesc.Enum, ms []fdesc.Message) pref.MessageDescriptor {
+	if depIdx := int(r.depIdxs.Get(i, j)); depIdx < len(es)+len(ms) {
+		return &ms[depIdx-len(es)]
+	} else {
+		return pimpl.Export{}.MessageDescriptorOf(r.goTypes[depIdx])
+	}
+}

vendor/google.golang.org/protobuf/internal/flags/flags.go

@@ -0,0 +1,24 @@
+// Copyright 2018 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// Package flags provides a set of flags controlled by build tags.
+package flags
+
+// ProtoLegacy specifies whether to enable support for legacy functionality
+// such as MessageSets, weak fields, and various other obscure behavior
+// that is necessary to maintain backwards compatibility with proto1 or
+// the pre-release variants of proto2 and proto3.
+//
+// This is disabled by default unless built with the "protolegacy" tag.
+//
+// WARNING: The compatibility agreement covers nothing provided by this flag.
+// As such, functionality may suddenly be removed or changed at our discretion.
+const ProtoLegacy = protoLegacy
+
+// LazyUnmarshalExtensions specifies whether to lazily unmarshal extensions.
+//
+// Lazy extension unmarshaling validates the contents of message-valued
+// extension fields at unmarshal time, but defers creating the message
+// structure until the extension is first accessed.
+const LazyUnmarshalExtensions = ProtoLegacy

vendor/google.golang.org/protobuf/internal/flags/proto_legacy_disable.go

@@ -0,0 +1,9 @@
+// Copyright 2018 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build !protolegacy
+
+package flags
+
+const protoLegacy = false

vendor/google.golang.org/protobuf/internal/flags/proto_legacy_enable.go

@@ -0,0 +1,9 @@
+// Copyright 2018 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build protolegacy
+
+package flags
+
+const protoLegacy = true

vendor/google.golang.org/protobuf/internal/genname/name.go

@@ -0,0 +1,25 @@
+// Copyright 2019 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// Package genname contains constants for generated names.
+package genname
+
+const (
+	State = "state"
+
+	SizeCache  = "sizeCache"
+	SizeCacheA = "XXX_sizecache"
+
+	WeakFields  = "weakFields"
+	WeakFieldsA = "XXX_weak"
+
+	UnknownFields  = "unknownFields"
+	UnknownFieldsA = "XXX_unrecognized"
+
+	ExtensionFields  = "extensionFields"
+	ExtensionFieldsA = "XXX_InternalExtensions"
+	ExtensionFieldsB = "XXX_extensions"
+
+	WeakFieldPrefix = "XXX_weak_"
+)

vendor/google.golang.org/protobuf/internal/impl/api_export.go

@@ -0,0 +1,170 @@
+// Copyright 2018 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package impl
+
+import (
+	"fmt"
+	"reflect"
+	"strconv"
+
+	"google.golang.org/protobuf/encoding/prototext"
+	"google.golang.org/protobuf/proto"
+	pref "google.golang.org/protobuf/reflect/protoreflect"
+	piface "google.golang.org/protobuf/runtime/protoiface"
+)
+
+// Export is a zero-length named type that exists only to export a set of
+// functions that we do not want to appear in godoc.
+type Export struct{}
+
+// enum is any enum type generated by protoc-gen-go
+// and must be a named int32 type.
+type enum = interface{}
+
+// EnumOf returns the protoreflect.Enum interface over e.
+// It returns nil if e is nil.
+func (Export) EnumOf(e enum) pref.Enum {
+	switch e := e.(type) {
+	case nil:
+		return nil
+	case pref.Enum:
+		return e
+	default:
+		return legacyWrapEnum(reflect.ValueOf(e))
+	}
+}
+
+// EnumDescriptorOf returns the protoreflect.EnumDescriptor for e.
+// It returns nil if e is nil.
+func (Export) EnumDescriptorOf(e enum) pref.EnumDescriptor {
+	switch e := e.(type) {
+	case nil:
+		return nil
+	case pref.Enum:
+		return e.Descriptor()
+	default:
+		return LegacyLoadEnumDesc(reflect.TypeOf(e))
+	}
+}
+
+// EnumTypeOf returns the protoreflect.EnumType for e.
+// It returns nil if e is nil.
+func (Export) EnumTypeOf(e enum) pref.EnumType {
+	switch e := e.(type) {
+	case nil:
+		return nil
+	case pref.Enum:
+		return e.Type()
+	default:
+		return legacyLoadEnumType(reflect.TypeOf(e))
+	}
+}
+
+// EnumStringOf returns the enum value as a string, either as the name if
+// the number is resolvable, or the number formatted as a string.
+func (Export) EnumStringOf(ed pref.EnumDescriptor, n pref.EnumNumber) string {
+	ev := ed.Values().ByNumber(n)
+	if ev != nil {
+		return string(ev.Name())
+	}
+	return strconv.Itoa(int(n))
+}
+
+// message is any message type generated by protoc-gen-go
+// and must be a pointer to a named struct type.
+type message = interface{}
+
+// legacyMessageWrapper wraps a v2 message as a v1 message.
+type legacyMessageWrapper struct{ m pref.ProtoMessage }
+
+func (m legacyMessageWrapper) Reset()         { proto.Reset(m.m) }
+func (m legacyMessageWrapper) String() string { return Export{}.MessageStringOf(m.m) }
+func (m legacyMessageWrapper) ProtoMessage()  {}
+
+// ProtoMessageV1Of converts either a v1 or v2 message to a v1 message.
+// It returns nil if m is nil.
+func (Export) ProtoMessageV1Of(m message) piface.MessageV1 {
+	switch mv := m.(type) {
+	case nil:
+		return nil
+	case piface.MessageV1:
+		return mv
+	case unwrapper:
+		return Export{}.ProtoMessageV1Of(mv.protoUnwrap())
+	case pref.ProtoMessage:
+		return legacyMessageWrapper{mv}
+	default:
+		panic(fmt.Sprintf("message %T is neither a v1 or v2 Message", m))
+	}
+}
+
+func (Export) protoMessageV2Of(m message) pref.ProtoMessage {
+	switch mv := m.(type) {
+	case nil:
+		return nil
+	case pref.ProtoMessage:
+		return mv
+	case legacyMessageWrapper:
+		return mv.m
+	case piface.MessageV1:
+		return nil
+	default:
+		panic(fmt.Sprintf("message %T is neither a v1 or v2 Message", m))
+	}
+}
+
+// ProtoMessageV2Of converts either a v1 or v2 message to a v2 message.
+// It returns nil if m is nil.
+func (Export) ProtoMessageV2Of(m message) pref.ProtoMessage {
+	if m == nil {
+		return nil
+	}
+	if mv := (Export{}).protoMessageV2Of(m); mv != nil {
+		return mv
+	}
+	return legacyWrapMessage(reflect.ValueOf(m)).Interface()
+}
+
+// MessageOf returns the protoreflect.Message interface over m.
+// It returns nil if m is nil.
+func (Export) MessageOf(m message) pref.Message {
+	if m == nil {
+		return nil
+	}
+	if mv := (Export{}).protoMessageV2Of(m); mv != nil {
+		return mv.ProtoReflect()
+	}
+	return legacyWrapMessage(reflect.ValueOf(m))
+}
+
+// MessageDescriptorOf returns the protoreflect.MessageDescriptor for m.
+// It returns nil if m is nil.
+func (Export) MessageDescriptorOf(m message) pref.MessageDescriptor {
+	if m == nil {
+		return nil
+	}
+	if mv := (Export{}).protoMessageV2Of(m); mv != nil {
+		return mv.ProtoReflect().Descriptor()
+	}
+	return LegacyLoadMessageDesc(reflect.TypeOf(m))
+}
+
+// MessageTypeOf returns the protoreflect.MessageType for m.
+// It returns nil if m is nil.
+func (Export) MessageTypeOf(m message) pref.MessageType {
+	if m == nil {
+		return nil
+	}
+	if mv := (Export{}).protoMessageV2Of(m); mv != nil {
+		return mv.ProtoReflect().Type()
+	}
+	return legacyLoadMessageInfo(reflect.TypeOf(m), "")
+}
+
+// MessageStringOf returns the message value as a string,
+// which is the message serialized in the protobuf text format.
+func (Export) MessageStringOf(m pref.ProtoMessage) string {
+	return prototext.MarshalOptions{Multiline: false}.Format(m)
+}

vendor/google.golang.org/protobuf/internal/impl/checkinit.go

@@ -0,0 +1,141 @@
+// Copyright 2019 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package impl
+
+import (
+	"sync"
+
+	"google.golang.org/protobuf/internal/errors"
+	pref "google.golang.org/protobuf/reflect/protoreflect"
+	piface "google.golang.org/protobuf/runtime/protoiface"
+)
+
+func (mi *MessageInfo) checkInitialized(in piface.CheckInitializedInput) (piface.CheckInitializedOutput, error) {
+	var p pointer
+	if ms, ok := in.Message.(*messageState); ok {
+		p = ms.pointer()
+	} else {
+		p = in.Message.(*messageReflectWrapper).pointer()
+	}
+	return piface.CheckInitializedOutput{}, mi.checkInitializedPointer(p)
+}
+
+func (mi *MessageInfo) checkInitializedPointer(p pointer) error {
+	mi.init()
+	if !mi.needsInitCheck {
+		return nil
+	}
+	if p.IsNil() {
+		for _, f := range mi.orderedCoderFields {
+			if f.isRequired {
+				return errors.RequiredNotSet(string(mi.Desc.Fields().ByNumber(f.num).FullName()))
+			}
+		}
+		return nil
+	}
+	if mi.extensionOffset.IsValid() {
+		e := p.Apply(mi.extensionOffset).Extensions()
+		if err := mi.isInitExtensions(e); err != nil {
+			return err
+		}
+	}
+	for _, f := range mi.orderedCoderFields {
+		if !f.isRequired && f.funcs.isInit == nil {
+			continue
+		}
+		fptr := p.Apply(f.offset)
+		if f.isPointer && fptr.Elem().IsNil() {
+			if f.isRequired {
+				return errors.RequiredNotSet(string(mi.Desc.Fields().ByNumber(f.num).FullName()))
+			}
+			continue
+		}
+		if f.funcs.isInit == nil {
+			continue
+		}
+		if err := f.funcs.isInit(fptr, f); err != nil {
+			return err
+		}
+	}
+	return nil
+}
+
+func (mi *MessageInfo) isInitExtensions(ext *map[int32]ExtensionField) error {
+	if ext == nil {
+		return nil
+	}
+	for _, x := range *ext {
+		ei := getExtensionFieldInfo(x.Type())
+		if ei.funcs.isInit == nil {
+			continue
+		}
+		v := x.Value()
+		if !v.IsValid() {
+			continue
+		}
+		if err := ei.funcs.isInit(v); err != nil {
+			return err
+		}
+	}
+	return nil
+}
+
+var (
+	needsInitCheckMu  sync.Mutex
+	needsInitCheckMap sync.Map
+)
+
+// needsInitCheck reports whether a message needs to be checked for partial initialization.
+//
+// It returns true if the message transitively includes any required or extension fields.
+func needsInitCheck(md pref.MessageDescriptor) bool {
+	if v, ok := needsInitCheckMap.Load(md); ok {
+		if has, ok := v.(bool); ok {
+			return has
+		}
+	}
+	needsInitCheckMu.Lock()
+	defer needsInitCheckMu.Unlock()
+	return needsInitCheckLocked(md)
+}
+
+func needsInitCheckLocked(md pref.MessageDescriptor) (has bool) {
+	if v, ok := needsInitCheckMap.Load(md); ok {
+		// If has is true, we've previously determined that this message
+		// needs init checks.
+		//
+		// If has is false, we've previously determined that it can never
+		// be uninitialized.
+		//
+		// If has is not a bool, we've just encountered a cycle in the
+		// message graph. In this case, it is safe to return false: If
+		// the message does have required fields, we'll detect them later
+		// in the graph traversal.
+		has, ok := v.(bool)
+		return ok && has
+	}
+	needsInitCheckMap.Store(md, struct{}{}) // avoid cycles while descending into this message
+	defer func() {
+		needsInitCheckMap.Store(md, has)
+	}()
+	if md.RequiredNumbers().Len() > 0 {
+		return true
+	}
+	if md.ExtensionRanges().Len() > 0 {
+		return true
+	}
+	for i := 0; i < md.Fields().Len(); i++ {
+		fd := md.Fields().Get(i)
+		// Map keys are never messages, so just consider the map value.
+		if fd.IsMap() {
+			fd = fd.MapValue()
+		}
+		fmd := fd.Message()
+		if fmd != nil && needsInitCheckLocked(fmd) {
+			return true
+		}
+	}
+	return false
+}

vendor/google.golang.org/protobuf/internal/impl/codec_extension.go

@@ -0,0 +1,223 @@
+// Copyright 2019 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package impl
+
+import (
+	"sync"
+	"sync/atomic"
+
+	"google.golang.org/protobuf/encoding/protowire"
+	"google.golang.org/protobuf/internal/errors"
+	pref "google.golang.org/protobuf/reflect/protoreflect"
+)
+
+type extensionFieldInfo struct {
+	wiretag             uint64
+	tagsize             int
+	unmarshalNeedsValue bool
+	funcs               valueCoderFuncs
+	validation          validationInfo
+}
+
+var legacyExtensionFieldInfoCache sync.Map // map[protoreflect.ExtensionType]*extensionFieldInfo
+
+func getExtensionFieldInfo(xt pref.ExtensionType) *extensionFieldInfo {
+	if xi, ok := xt.(*ExtensionInfo); ok {
+		xi.lazyInit()
+		return xi.info
+	}
+	return legacyLoadExtensionFieldInfo(xt)
+}
+
+// legacyLoadExtensionFieldInfo dynamically loads a *ExtensionInfo for xt.
+func legacyLoadExtensionFieldInfo(xt pref.ExtensionType) *extensionFieldInfo {
+	if xi, ok := legacyExtensionFieldInfoCache.Load(xt); ok {
+		return xi.(*extensionFieldInfo)
+	}
+	e := makeExtensionFieldInfo(xt.TypeDescriptor())
+	if e, ok := legacyMessageTypeCache.LoadOrStore(xt, e); ok {
+		return e.(*extensionFieldInfo)
+	}
+	return e
+}
+
+func makeExtensionFieldInfo(xd pref.ExtensionDescriptor) *extensionFieldInfo {
+	var wiretag uint64
+	if !xd.IsPacked() {
+		wiretag = protowire.EncodeTag(xd.Number(), wireTypes[xd.Kind()])
+	} else {
+		wiretag = protowire.EncodeTag(xd.Number(), protowire.BytesType)
+	}
+	e := &extensionFieldInfo{
+		wiretag: wiretag,
+		tagsize: protowire.SizeVarint(wiretag),
+		funcs:   encoderFuncsForValue(xd),
+	}
+	// Does the unmarshal function need a value passed to it?
+	// This is true for composite types, where we pass in a message, list, or map to fill in,
+	// and for enums, where we pass in a prototype value to specify the concrete enum type.
+	switch xd.Kind() {
+	case pref.MessageKind, pref.GroupKind, pref.EnumKind:
+		e.unmarshalNeedsValue = true
+	default:
+		if xd.Cardinality() == pref.Repeated {
+			e.unmarshalNeedsValue = true
+		}
+	}
+	return e
+}
+
+type lazyExtensionValue struct {
+	atomicOnce uint32 // atomically set if value is valid
+	mu         sync.Mutex
+	xi         *extensionFieldInfo
+	value      pref.Value
+	b          []byte
+	fn         func() pref.Value
+}
+
+type ExtensionField struct {
+	typ pref.ExtensionType
+
+	// value is either the value of GetValue,
+	// or a *lazyExtensionValue that then returns the value of GetValue.
+	value pref.Value
+	lazy  *lazyExtensionValue
+}
+
+func (f *ExtensionField) appendLazyBytes(xt pref.ExtensionType, xi *extensionFieldInfo, num protowire.Number, wtyp protowire.Type, b []byte) {
+	if f.lazy == nil {
+		f.lazy = &lazyExtensionValue{xi: xi}
+	}
+	f.typ = xt
+	f.lazy.xi = xi
+	f.lazy.b = protowire.AppendTag(f.lazy.b, num, wtyp)
+	f.lazy.b = append(f.lazy.b, b...)
+}
+
+func (f *ExtensionField) canLazy(xt pref.ExtensionType) bool {
+	if f.typ == nil {
+		return true
+	}
+	if f.typ == xt && f.lazy != nil && atomic.LoadUint32(&f.lazy.atomicOnce) == 0 {
+		return true
+	}
+	return false
+}
+
+func (f *ExtensionField) lazyInit() {
+	f.lazy.mu.Lock()
+	defer f.lazy.mu.Unlock()
+	if atomic.LoadUint32(&f.lazy.atomicOnce) == 1 {
+		return
+	}
+	if f.lazy.xi != nil {
+		b := f.lazy.b
+		val := f.typ.New()
+		for len(b) > 0 {
+			var tag uint64
+			if b[0] < 0x80 {
+				tag = uint64(b[0])
+				b = b[1:]
+			} else if len(b) >= 2 && b[1] < 128 {
+				tag = uint64(b[0]&0x7f) + uint64(b[1])<<7
+				b = b[2:]
+			} else {
+				var n int
+				tag, n = protowire.ConsumeVarint(b)
+				if n < 0 {
+					panic(errors.New("bad tag in lazy extension decoding"))
+				}
+				b = b[n:]
+			}
+			num := protowire.Number(tag >> 3)
+			wtyp := protowire.Type(tag & 7)
+			var out unmarshalOutput
+			var err error
+			val, out, err = f.lazy.xi.funcs.unmarshal(b, val, num, wtyp, lazyUnmarshalOptions)
+			if err != nil {
+				panic(errors.New("decode failure in lazy extension decoding: %v", err))
+			}
+			b = b[out.n:]
+		}
+		f.lazy.value = val
+	} else {
+		f.lazy.value = f.lazy.fn()
+	}
+	f.lazy.xi = nil
+	f.lazy.fn = nil
+	f.lazy.b = nil
+	atomic.StoreUint32(&f.lazy.atomicOnce, 1)
+}
+
+// Set sets the type and value of the extension field.
+// This must not be called concurrently.
+func (f *ExtensionField) Set(t pref.ExtensionType, v pref.Value) {
+	f.typ = t
+	f.value = v
+	f.lazy = nil
+}
+
+// SetLazy sets the type and a value that is to be lazily evaluated upon first use.
+// This must not be called concurrently.
+func (f *ExtensionField) SetLazy(t pref.ExtensionType, fn func() pref.Value) {
+	f.typ = t
+	f.lazy = &lazyExtensionValue{fn: fn}
+}
+
+// Value returns the value of the extension field.
+// This may be called concurrently.
+func (f *ExtensionField) Value() pref.Value {
+	if f.lazy != nil {
+		if atomic.LoadUint32(&f.lazy.atomicOnce) == 0 {
+			f.lazyInit()
+		}
+		return f.lazy.value
+	}
+	return f.value
+}
+
+// Type returns the type of the extension field.
+// This may be called concurrently.
+func (f ExtensionField) Type() pref.ExtensionType {
+	return f.typ
+}
+
+// IsSet returns whether the extension field is set.
+// This may be called concurrently.
+func (f ExtensionField) IsSet() bool {
+	return f.typ != nil
+}
+
+// IsLazy reports whether a field is lazily encoded.
+// It is exported for testing.
+func IsLazy(m pref.Message, fd pref.FieldDescriptor) bool {
+	var mi *MessageInfo
+	var p pointer
+	switch m := m.(type) {
+	case *messageState:
+		mi = m.messageInfo()
+		p = m.pointer()
+	case *messageReflectWrapper:
+		mi = m.messageInfo()
+		p = m.pointer()
+	default:
+		return false
+	}
+	xd, ok := fd.(pref.ExtensionTypeDescriptor)
+	if !ok {
+		return false
+	}
+	xt := xd.Type()
+	ext := mi.extensionMap(p)
+	if ext == nil {
+		return false
+	}
+	f, ok := (*ext)[int32(fd.Number())]
+	if !ok {
+		return false
+	}
+	return f.typ == xt && f.lazy != nil && atomic.LoadUint32(&f.lazy.atomicOnce) == 0
+}

vendor/google.golang.org/protobuf/internal/impl/codec_field.go

@@ -0,0 +1,828 @@
+// Copyright 2019 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package impl
+
+import (
+	"fmt"
+	"reflect"
+	"sync"
+
+	"google.golang.org/protobuf/encoding/protowire"
+	"google.golang.org/protobuf/proto"
+	pref "google.golang.org/protobuf/reflect/protoreflect"
+	preg "google.golang.org/protobuf/reflect/protoregistry"
+	piface "google.golang.org/protobuf/runtime/protoiface"
+)
+
+type errInvalidUTF8 struct{}
+
+func (errInvalidUTF8) Error() string     { return "string field contains invalid UTF-8" }
+func (errInvalidUTF8) InvalidUTF8() bool { return true }
+
+// initOneofFieldCoders initializes the fast-path functions for the fields in a oneof.
+//
+// For size, marshal, and isInit operations, functions are set only on the first field
+// in the oneof. The functions are called when the oneof is non-nil, and will dispatch
+// to the appropriate field-specific function as necessary.
+//
+// The unmarshal function is set on each field individually as usual.
+func (mi *MessageInfo) initOneofFieldCoders(od pref.OneofDescriptor, si structInfo) {
+	fs := si.oneofsByName[od.Name()]
+	ft := fs.Type
+	oneofFields := make(map[reflect.Type]*coderFieldInfo)
+	needIsInit := false
+	fields := od.Fields()
+	for i, lim := 0, fields.Len(); i < lim; i++ {
+		fd := od.Fields().Get(i)
+		num := fd.Number()
+		// Make a copy of the original coderFieldInfo for use in unmarshaling.
+		//
+		// oneofFields[oneofType].funcs.marshal is the field-specific marshal function.
+		//
+		// mi.coderFields[num].marshal is set on only the first field in the oneof,
+		// and dispatches to the field-specific marshaler in oneofFields.
+		cf := *mi.coderFields[num]
+		ot := si.oneofWrappersByNumber[num]
+		cf.ft = ot.Field(0).Type
+		cf.mi, cf.funcs = fieldCoder(fd, cf.ft)
+		oneofFields[ot] = &cf
+		if cf.funcs.isInit != nil {
+			needIsInit = true
+		}
+		mi.coderFields[num].funcs.unmarshal = func(b []byte, p pointer, wtyp protowire.Type, f *coderFieldInfo, opts unmarshalOptions) (unmarshalOutput, error) {
+			var vw reflect.Value         // pointer to wrapper type
+			vi := p.AsValueOf(ft).Elem() // oneof field value of interface kind
+			if !vi.IsNil() && !vi.Elem().IsNil() && vi.Elem().Elem().Type() == ot {
+				vw = vi.Elem()
+			} else {
+				vw = reflect.New(ot)
+			}
+			out, err := cf.funcs.unmarshal(b, pointerOfValue(vw).Apply(zeroOffset), wtyp, &cf, opts)
+			if err != nil {
+				return out, err
+			}
+			vi.Set(vw)
+			return out, nil
+		}
+	}
+	getInfo := func(p pointer) (pointer, *coderFieldInfo) {
+		v := p.AsValueOf(ft).Elem()
+		if v.IsNil() {
+			return pointer{}, nil
+		}
+		v = v.Elem() // interface -> *struct
+		if v.IsNil() {
+			return pointer{}, nil
+		}
+		return pointerOfValue(v).Apply(zeroOffset), oneofFields[v.Elem().Type()]
+	}
+	first := mi.coderFields[od.Fields().Get(0).Number()]
+	first.funcs.size = func(p pointer, _ *coderFieldInfo, opts marshalOptions) int {
+		p, info := getInfo(p)
+		if info == nil || info.funcs.size == nil {
+			return 0
+		}
+		return info.funcs.size(p, info, opts)
+	}
+	first.funcs.marshal = func(b []byte, p pointer, _ *coderFieldInfo, opts marshalOptions) ([]byte, error) {
+		p, info := getInfo(p)
+		if info == nil || info.funcs.marshal == nil {
+			return b, nil
+		}
+		return info.funcs.marshal(b, p, info, opts)
+	}
+	first.funcs.merge = func(dst, src pointer, _ *coderFieldInfo, opts mergeOptions) {
+		srcp, srcinfo := getInfo(src)
+		if srcinfo == nil || srcinfo.funcs.merge == nil {
+			return
+		}
+		dstp, dstinfo := getInfo(dst)
+		if dstinfo != srcinfo {
+			dst.AsValueOf(ft).Elem().Set(reflect.New(src.AsValueOf(ft).Elem().Elem().Elem().Type()))
+			dstp = pointerOfValue(dst.AsValueOf(ft).Elem().Elem()).Apply(zeroOffset)
+		}
+		srcinfo.funcs.merge(dstp, srcp, srcinfo, opts)
+	}
+	if needIsInit {
+		first.funcs.isInit = func(p pointer, _ *coderFieldInfo) error {
+			p, info := getInfo(p)
+			if info == nil || info.funcs.isInit == nil {
+				return nil
+			}
+			return info.funcs.isInit(p, info)
+		}
+	}
+}
+
+func makeWeakMessageFieldCoder(fd pref.FieldDescriptor) pointerCoderFuncs {
+	var once sync.Once
+	var messageType pref.MessageType
+	lazyInit := func() {
+		once.Do(func() {
+			messageName := fd.Message().FullName()
+			messageType, _ = preg.GlobalTypes.FindMessageByName(messageName)
+		})
+	}
+
+	return pointerCoderFuncs{
+		size: func(p pointer, f *coderFieldInfo, opts marshalOptions) int {
+			m, ok := p.WeakFields().get(f.num)
+			if !ok {
+				return 0
+			}
+			lazyInit()
+			if messageType == nil {
+				panic(fmt.Sprintf("weak message %v is not linked in", fd.Message().FullName()))
+			}
+			return sizeMessage(m, f.tagsize, opts)
+		},
+		marshal: func(b []byte, p pointer, f *coderFieldInfo, opts marshalOptions) ([]byte, error) {
+			m, ok := p.WeakFields().get(f.num)
+			if !ok {
+				return b, nil
+			}
+			lazyInit()
+			if messageType == nil {
+				panic(fmt.Sprintf("weak message %v is not linked in", fd.Message().FullName()))
+			}
+			return appendMessage(b, m, f.wiretag, opts)
+		},
+		unmarshal: func(b []byte, p pointer, wtyp protowire.Type, f *coderFieldInfo, opts unmarshalOptions) (unmarshalOutput, error) {
+			fs := p.WeakFields()
+			m, ok := fs.get(f.num)
+			if !ok {
+				lazyInit()
+				if messageType == nil {
+					return unmarshalOutput{}, errUnknown
+				}
+				m = messageType.New().Interface()
+				fs.set(f.num, m)
+			}
+			return consumeMessage(b, m, wtyp, opts)
+		},
+		isInit: func(p pointer, f *coderFieldInfo) error {
+			m, ok := p.WeakFields().get(f.num)
+			if !ok {
+				return nil
+			}
+			return proto.CheckInitialized(m)
+		},
+		merge: func(dst, src pointer, f *coderFieldInfo, opts mergeOptions) {
+			sm, ok := src.WeakFields().get(f.num)
+			if !ok {
+				return
+			}
+			dm, ok := dst.WeakFields().get(f.num)
+			if !ok {
+				lazyInit()
+				if messageType == nil {
+					panic(fmt.Sprintf("weak message %v is not linked in", fd.Message().FullName()))
+				}
+				dm = messageType.New().Interface()
+				dst.WeakFields().set(f.num, dm)
+			}
+			opts.Merge(dm, sm)
+		},
+	}
+}
+
+func makeMessageFieldCoder(fd pref.FieldDescriptor, ft reflect.Type) pointerCoderFuncs {
+	if mi := getMessageInfo(ft); mi != nil {
+		funcs := pointerCoderFuncs{
+			size:      sizeMessageInfo,
+			marshal:   appendMessageInfo,
+			unmarshal: consumeMessageInfo,
+			merge:     mergeMessage,
+		}
+		if needsInitCheck(mi.Desc) {
+			funcs.isInit = isInitMessageInfo
+		}
+		return funcs
+	} else {
+		return pointerCoderFuncs{
+			size: func(p pointer, f *coderFieldInfo, opts marshalOptions) int {
+				m := asMessage(p.AsValueOf(ft).Elem())
+				return sizeMessage(m, f.tagsize, opts)
+			},
+			marshal: func(b []byte, p pointer, f *coderFieldInfo, opts marshalOptions) ([]byte, error) {
+				m := asMessage(p.AsValueOf(ft).Elem())
+				return appendMessage(b, m, f.wiretag, opts)
+			},
+			unmarshal: func(b []byte, p pointer, wtyp protowire.Type, f *coderFieldInfo, opts unmarshalOptions) (unmarshalOutput, error) {
+				mp := p.AsValueOf(ft).Elem()
+				if mp.IsNil() {
+					mp.Set(reflect.New(ft.Elem()))
+				}
+				return consumeMessage(b, asMessage(mp), wtyp, opts)
+			},
+			isInit: func(p pointer, f *coderFieldInfo) error {
+				m := asMessage(p.AsValueOf(ft).Elem())
+				return proto.CheckInitialized(m)
+			},
+			merge: mergeMessage,
+		}
+	}
+}
+
+func sizeMessageInfo(p pointer, f *coderFieldInfo, opts marshalOptions) int {
+	return protowire.SizeBytes(f.mi.sizePointer(p.Elem(), opts)) + f.tagsize
+}
+
+func appendMessageInfo(b []byte, p pointer, f *coderFieldInfo, opts marshalOptions) ([]byte, error) {
+	b = protowire.AppendVarint(b, f.wiretag)
+	b = protowire.AppendVarint(b, uint64(f.mi.sizePointer(p.Elem(), opts)))
+	return f.mi.marshalAppendPointer(b, p.Elem(), opts)
+}
+
+func consumeMessageInfo(b []byte, p pointer, wtyp protowire.Type, f *coderFieldInfo, opts unmarshalOptions) (out unmarshalOutput, err error) {
+	if wtyp != protowire.BytesType {
+		return out, errUnknown
+	}
+	v, n := protowire.ConsumeBytes(b)
+	if n < 0 {
+		return out, protowire.ParseError(n)
+	}
+	if p.Elem().IsNil() {
+		p.SetPointer(pointerOfValue(reflect.New(f.mi.GoReflectType.Elem())))
+	}
+	o, err := f.mi.unmarshalPointer(v, p.Elem(), 0, opts)
+	if err != nil {
+		return out, err
+	}
+	out.n = n
+	out.initialized = o.initialized
+	return out, nil
+}
+
+func isInitMessageInfo(p pointer, f *coderFieldInfo) error {
+	return f.mi.checkInitializedPointer(p.Elem())
+}
+
+func sizeMessage(m proto.Message, tagsize int, _ marshalOptions) int {
+	return protowire.SizeBytes(proto.Size(m)) + tagsize
+}
+
+func appendMessage(b []byte, m proto.Message, wiretag uint64, opts marshalOptions) ([]byte, error) {
+	b = protowire.AppendVarint(b, wiretag)
+	b = protowire.AppendVarint(b, uint64(proto.Size(m)))
+	return opts.Options().MarshalAppend(b, m)
+}
+
+func consumeMessage(b []byte, m proto.Message, wtyp protowire.Type, opts unmarshalOptions) (out unmarshalOutput, err error) {
+	if wtyp != protowire.BytesType {
+		return out, errUnknown
+	}
+	v, n := protowire.ConsumeBytes(b)
+	if n < 0 {
+		return out, protowire.ParseError(n)
+	}
+	o, err := opts.Options().UnmarshalState(piface.UnmarshalInput{
+		Buf:     v,
+		Message: m.ProtoReflect(),
+	})
+	if err != nil {
+		return out, err
+	}
+	out.n = n
+	out.initialized = o.Flags&piface.UnmarshalInitialized != 0
+	return out, nil
+}
+
+func sizeMessageValue(v pref.Value, tagsize int, opts marshalOptions) int {
+	m := v.Message().Interface()
+	return sizeMessage(m, tagsize, opts)
+}
+
+func appendMessageValue(b []byte, v pref.Value, wiretag uint64, opts marshalOptions) ([]byte, error) {
+	m := v.Message().Interface()
+	return appendMessage(b, m, wiretag, opts)
+}
+
+func consumeMessageValue(b []byte, v pref.Value, _ protowire.Number, wtyp protowire.Type, opts unmarshalOptions) (pref.Value, unmarshalOutput, error) {
+	m := v.Message().Interface()
+	out, err := consumeMessage(b, m, wtyp, opts)
+	return v, out, err
+}
+
+func isInitMessageValue(v pref.Value) error {
+	m := v.Message().Interface()
+	return proto.CheckInitialized(m)
+}
+
+var coderMessageValue = valueCoderFuncs{
+	size:      sizeMessageValue,
+	marshal:   appendMessageValue,
+	unmarshal: consumeMessageValue,
+	isInit:    isInitMessageValue,
+	merge:     mergeMessageValue,
+}
+
+func sizeGroupValue(v pref.Value, tagsize int, opts marshalOptions) int {
+	m := v.Message().Interface()
+	return sizeGroup(m, tagsize, opts)
+}
+
+func appendGroupValue(b []byte, v pref.Value, wiretag uint64, opts marshalOptions) ([]byte, error) {
+	m := v.Message().Interface()
+	return appendGroup(b, m, wiretag, opts)
+}
+
+func consumeGroupValue(b []byte, v pref.Value, num protowire.Number, wtyp protowire.Type, opts unmarshalOptions) (pref.Value, unmarshalOutput, error) {
+	m := v.Message().Interface()
+	out, err := consumeGroup(b, m, num, wtyp, opts)
+	return v, out, err
+}
+
+var coderGroupValue = valueCoderFuncs{
+	size:      sizeGroupValue,
+	marshal:   appendGroupValue,
+	unmarshal: consumeGroupValue,
+	isInit:    isInitMessageValue,
+	merge:     mergeMessageValue,
+}
+
+func makeGroupFieldCoder(fd pref.FieldDescriptor, ft reflect.Type) pointerCoderFuncs {
+	num := fd.Number()
+	if mi := getMessageInfo(ft); mi != nil {
+		funcs := pointerCoderFuncs{
+			size:      sizeGroupType,
+			marshal:   appendGroupType,
+			unmarshal: consumeGroupType,
+			merge:     mergeMessage,
+		}
+		if needsInitCheck(mi.Desc) {
+			funcs.isInit = isInitMessageInfo
+		}
+		return funcs
+	} else {
+		return pointerCoderFuncs{
+			size: func(p pointer, f *coderFieldInfo, opts marshalOptions) int {
+				m := asMessage(p.AsValueOf(ft).Elem())
+				return sizeGroup(m, f.tagsize, opts)
+			},
+			marshal: func(b []byte, p pointer, f *coderFieldInfo, opts marshalOptions) ([]byte, error) {
+				m := asMessage(p.AsValueOf(ft).Elem())
+				return appendGroup(b, m, f.wiretag, opts)
+			},
+			unmarshal: func(b []byte, p pointer, wtyp protowire.Type, f *coderFieldInfo, opts unmarshalOptions) (unmarshalOutput, error) {
+				mp := p.AsValueOf(ft).Elem()
+				if mp.IsNil() {
+					mp.Set(reflect.New(ft.Elem()))
+				}
+				return consumeGroup(b, asMessage(mp), num, wtyp, opts)
+			},
+			isInit: func(p pointer, f *coderFieldInfo) error {
+				m := asMessage(p.AsValueOf(ft).Elem())
+				return proto.CheckInitialized(m)
+			},
+			merge: mergeMessage,
+		}
+	}
+}
+
+func sizeGroupType(p pointer, f *coderFieldInfo, opts marshalOptions) int {
+	return 2*f.tagsize + f.mi.sizePointer(p.Elem(), opts)
+}
+
+func appendGroupType(b []byte, p pointer, f *coderFieldInfo, opts marshalOptions) ([]byte, error) {
+	b = protowire.AppendVarint(b, f.wiretag) // start group
+	b, err := f.mi.marshalAppendPointer(b, p.Elem(), opts)
+	b = protowire.AppendVarint(b, f.wiretag+1) // end group
+	return b, err
+}
+
+func consumeGroupType(b []byte, p pointer, wtyp protowire.Type, f *coderFieldInfo, opts unmarshalOptions) (out unmarshalOutput, err error) {
+	if wtyp != protowire.StartGroupType {
+		return out, errUnknown
+	}
+	if p.Elem().IsNil() {
+		p.SetPointer(pointerOfValue(reflect.New(f.mi.GoReflectType.Elem())))
+	}
+	return f.mi.unmarshalPointer(b, p.Elem(), f.num, opts)
+}
+
+func sizeGroup(m proto.Message, tagsize int, _ marshalOptions) int {
+	return 2*tagsize + proto.Size(m)
+}
+
+func appendGroup(b []byte, m proto.Message, wiretag uint64, opts marshalOptions) ([]byte, error) {
+	b = protowire.AppendVarint(b, wiretag) // start group
+	b, err := opts.Options().MarshalAppend(b, m)
+	b = protowire.AppendVarint(b, wiretag+1) // end group
+	return b, err
+}
+
+func consumeGroup(b []byte, m proto.Message, num protowire.Number, wtyp protowire.Type, opts unmarshalOptions) (out unmarshalOutput, err error) {
+	if wtyp != protowire.StartGroupType {
+		return out, errUnknown
+	}
+	b, n := protowire.ConsumeGroup(num, b)
+	if n < 0 {
+		return out, protowire.ParseError(n)
+	}
+	o, err := opts.Options().UnmarshalState(piface.UnmarshalInput{
+		Buf:     b,
+		Message: m.ProtoReflect(),
+	})
+	if err != nil {
+		return out, err
+	}
+	out.n = n
+	out.initialized = o.Flags&piface.UnmarshalInitialized != 0
+	return out, nil
+}
+
+func makeMessageSliceFieldCoder(fd pref.FieldDescriptor, ft reflect.Type) pointerCoderFuncs {
+	if mi := getMessageInfo(ft); mi != nil {
+		funcs := pointerCoderFuncs{
+			size:      sizeMessageSliceInfo,
+			marshal:   appendMessageSliceInfo,
+			unmarshal: consumeMessageSliceInfo,
+			merge:     mergeMessageSlice,
+		}
+		if needsInitCheck(mi.Desc) {
+			funcs.isInit = isInitMessageSliceInfo
+		}
+		return funcs
+	}
+	return pointerCoderFuncs{
+		size: func(p pointer, f *coderFieldInfo, opts marshalOptions) int {
+			return sizeMessageSlice(p, ft, f.tagsize, opts)
+		},
+		marshal: func(b []byte, p pointer, f *coderFieldInfo, opts marshalOptions) ([]byte, error) {
+			return appendMessageSlice(b, p, f.wiretag, ft, opts)
+		},
+		unmarshal: func(b []byte, p pointer, wtyp protowire.Type, f *coderFieldInfo, opts unmarshalOptions) (unmarshalOutput, error) {
+			return consumeMessageSlice(b, p, ft, wtyp, opts)
+		},
+		isInit: func(p pointer, f *coderFieldInfo) error {
+			return isInitMessageSlice(p, ft)
+		},
+		merge: mergeMessageSlice,
+	}
+}
+
+func sizeMessageSliceInfo(p pointer, f *coderFieldInfo, opts marshalOptions) int {
+	s := p.PointerSlice()
+	n := 0
+	for _, v := range s {
+		n += protowire.SizeBytes(f.mi.sizePointer(v, opts)) + f.tagsize
+	}
+	return n
+}
+
+func appendMessageSliceInfo(b []byte, p pointer, f *coderFieldInfo, opts marshalOptions) ([]byte, error) {
+	s := p.PointerSlice()
+	var err error
+	for _, v := range s {
+		b = protowire.AppendVarint(b, f.wiretag)
+		siz := f.mi.sizePointer(v, opts)
+		b = protowire.AppendVarint(b, uint64(siz))
+		b, err = f.mi.marshalAppendPointer(b, v, opts)
+		if err != nil {
+			return b, err
+		}
+	}
+	return b, nil
+}
+
+func consumeMessageSliceInfo(b []byte, p pointer, wtyp protowire.Type, f *coderFieldInfo, opts unmarshalOptions) (out unmarshalOutput, err error) {
+	if wtyp != protowire.BytesType {
+		return out, errUnknown
+	}
+	v, n := protowire.ConsumeBytes(b)
+	if n < 0 {
+		return out, protowire.ParseError(n)
+	}
+	m := reflect.New(f.mi.GoReflectType.Elem()).Interface()
+	mp := pointerOfIface(m)
+	o, err := f.mi.unmarshalPointer(v, mp, 0, opts)
+	if err != nil {
+		return out, err
+	}
+	p.AppendPointerSlice(mp)
+	out.n = n
+	out.initialized = o.initialized
+	return out, nil
+}
+
+func isInitMessageSliceInfo(p pointer, f *coderFieldInfo) error {
+	s := p.PointerSlice()
+	for _, v := range s {
+		if err := f.mi.checkInitializedPointer(v); err != nil {
+			return err
+		}
+	}
+	return nil
+}
+
+func sizeMessageSlice(p pointer, goType reflect.Type, tagsize int, _ marshalOptions) int {
+	s := p.PointerSlice()
+	n := 0
+	for _, v := range s {
+		m := asMessage(v.AsValueOf(goType.Elem()))
+		n += protowire.SizeBytes(proto.Size(m)) + tagsize
+	}
+	return n
+}
+
+func appendMessageSlice(b []byte, p pointer, wiretag uint64, goType reflect.Type, opts marshalOptions) ([]byte, error) {
+	s := p.PointerSlice()
+	var err error
+	for _, v := range s {
+		m := asMessage(v.AsValueOf(goType.Elem()))
+		b = protowire.AppendVarint(b, wiretag)
+		siz := proto.Size(m)
+		b = protowire.AppendVarint(b, uint64(siz))
+		b, err = opts.Options().MarshalAppend(b, m)
+		if err != nil {
+			return b, err
+		}
+	}
+	return b, nil
+}
+
+func consumeMessageSlice(b []byte, p pointer, goType reflect.Type, wtyp protowire.Type, opts unmarshalOptions) (out unmarshalOutput, err error) {
+	if wtyp != protowire.BytesType {
+		return out, errUnknown
+	}
+	v, n := protowire.ConsumeBytes(b)
+	if n < 0 {
+		return out, protowire.ParseError(n)
+	}
+	mp := reflect.New(goType.Elem())
+	o, err := opts.Options().UnmarshalState(piface.UnmarshalInput{
+		Buf:     v,
+		Message: asMessage(mp).ProtoReflect(),
+	})
+	if err != nil {
+		return out, err
+	}
+	p.AppendPointerSlice(pointerOfValue(mp))
+	out.n = n
+	out.initialized = o.Flags&piface.UnmarshalInitialized != 0
+	return out, nil
+}
+
+func isInitMessageSlice(p pointer, goType reflect.Type) error {
+	s := p.PointerSlice()
+	for _, v := range s {
+		m := asMessage(v.AsValueOf(goType.Elem()))
+		if err := proto.CheckInitialized(m); err != nil {
+			return err
+		}
+	}
+	return nil
+}
+
+// Slices of messages
+
+func sizeMessageSliceValue(listv pref.Value, tagsize int, opts marshalOptions) int {
+	list := listv.List()
+	n := 0
+	for i, llen := 0, list.Len(); i < llen; i++ {
+		m := list.Get(i).Message().Interface()
+		n += protowire.SizeBytes(proto.Size(m)) + tagsize
+	}
+	return n
+}
+
+func appendMessageSliceValue(b []byte, listv pref.Value, wiretag uint64, opts marshalOptions) ([]byte, error) {
+	list := listv.List()
+	mopts := opts.Options()
+	for i, llen := 0, list.Len(); i < llen; i++ {
+		m := list.Get(i).Message().Interface()
+		b = protowire.AppendVarint(b, wiretag)
+		siz := proto.Size(m)
+		b = protowire.AppendVarint(b, uint64(siz))
+		var err error
+		b, err = mopts.MarshalAppend(b, m)
+		if err != nil {
+			return b, err
+		}
+	}
+	return b, nil
+}
+
+func consumeMessageSliceValue(b []byte, listv pref.Value, _ protowire.Number, wtyp protowire.Type, opts unmarshalOptions) (_ pref.Value, out unmarshalOutput, err error) {
+	list := listv.List()
+	if wtyp != protowire.BytesType {
+		return pref.Value{}, out, errUnknown
+	}
+	v, n := protowire.ConsumeBytes(b)
+	if n < 0 {
+		return pref.Value{}, out, protowire.ParseError(n)
+	}
+	m := list.NewElement()
+	o, err := opts.Options().UnmarshalState(piface.UnmarshalInput{
+		Buf:     v,
+		Message: m.Message(),
+	})
+	if err != nil {
+		return pref.Value{}, out, err
+	}
+	list.Append(m)
+	out.n = n
+	out.initialized = o.Flags&piface.UnmarshalInitialized != 0
+	return listv, out, nil
+}
+
+func isInitMessageSliceValue(listv pref.Value) error {
+	list := listv.List()
+	for i, llen := 0, list.Len(); i < llen; i++ {
+		m := list.Get(i).Message().Interface()
+		if err := proto.CheckInitialized(m); err != nil {
+			return err
+		}
+	}
+	return nil
+}
+
+var coderMessageSliceValue = valueCoderFuncs{
+	size:      sizeMessageSliceValue,
+	marshal:   appendMessageSliceValue,
+	unmarshal: consumeMessageSliceValue,
+	isInit:    isInitMessageSliceValue,
+	merge:     mergeMessageListValue,
+}
+
+func sizeGroupSliceValue(listv pref.Value, tagsize int, opts marshalOptions) int {
+	list := listv.List()
+	n := 0
+	for i, llen := 0, list.Len(); i < llen; i++ {
+		m := list.Get(i).Message().Interface()
+		n += 2*tagsize + proto.Size(m)
+	}
+	return n
+}
+
+func appendGroupSliceValue(b []byte, listv pref.Value, wiretag uint64, opts marshalOptions) ([]byte, error) {
+	list := listv.List()
+	mopts := opts.Options()
+	for i, llen := 0, list.Len(); i < llen; i++ {
+		m := list.Get(i).Message().Interface()
+		b = protowire.AppendVarint(b, wiretag) // start group
+		var err error
+		b, err = mopts.MarshalAppend(b, m)
+		if err != nil {
+			return b, err
+		}
+		b = protowire.AppendVarint(b, wiretag+1) // end group
+	}
+	return b, nil
+}
+
+func consumeGroupSliceValue(b []byte, listv pref.Value, num protowire.Number, wtyp protowire.Type, opts unmarshalOptions) (_ pref.Value, out unmarshalOutput, err error) {
+	list := listv.List()
+	if wtyp != protowire.StartGroupType {
+		return pref.Value{}, out, errUnknown
+	}
+	b, n := protowire.ConsumeGroup(num, b)
+	if n < 0 {
+		return pref.Value{}, out, protowire.ParseError(n)
+	}
+	m := list.NewElement()
+	o, err := opts.Options().UnmarshalState(piface.UnmarshalInput{
+		Buf:     b,
+		Message: m.Message(),
+	})
+	if err != nil {
+		return pref.Value{}, out, err
+	}
+	list.Append(m)
+	out.n = n
+	out.initialized = o.Flags&piface.UnmarshalInitialized != 0
+	return listv, out, nil
+}
+
+var coderGroupSliceValue = valueCoderFuncs{
+	size:      sizeGroupSliceValue,
+	marshal:   appendGroupSliceValue,
+	unmarshal: consumeGroupSliceValue,
+	isInit:    isInitMessageSliceValue,
+	merge:     mergeMessageListValue,
+}
+
+func makeGroupSliceFieldCoder(fd pref.FieldDescriptor, ft reflect.Type) pointerCoderFuncs {
+	num := fd.Number()
+	if mi := getMessageInfo(ft); mi != nil {
+		funcs := pointerCoderFuncs{
+			size:      sizeGroupSliceInfo,
+			marshal:   appendGroupSliceInfo,
+			unmarshal: consumeGroupSliceInfo,
+			merge:     mergeMessageSlice,
+		}
+		if needsInitCheck(mi.Desc) {
+			funcs.isInit = isInitMessageSliceInfo
+		}
+		return funcs
+	}
+	return pointerCoderFuncs{
+		size: func(p pointer, f *coderFieldInfo, opts marshalOptions) int {
+			return sizeGroupSlice(p, ft, f.tagsize, opts)
+		},
+		marshal: func(b []byte, p pointer, f *coderFieldInfo, opts marshalOptions) ([]byte, error) {
+			return appendGroupSlice(b, p, f.wiretag, ft, opts)
+		},
+		unmarshal: func(b []byte, p pointer, wtyp protowire.Type, f *coderFieldInfo, opts unmarshalOptions) (unmarshalOutput, error) {
+			return consumeGroupSlice(b, p, num, wtyp, ft, opts)
+		},
+		isInit: func(p pointer, f *coderFieldInfo) error {
+			return isInitMessageSlice(p, ft)
+		},
+		merge: mergeMessageSlice,
+	}
+}
+
+func sizeGroupSlice(p pointer, messageType reflect.Type, tagsize int, _ marshalOptions) int {
+	s := p.PointerSlice()
+	n := 0
+	for _, v := range s {
+		m := asMessage(v.AsValueOf(messageType.Elem()))
+		n += 2*tagsize + proto.Size(m)
+	}
+	return n
+}
+
+func appendGroupSlice(b []byte, p pointer, wiretag uint64, messageType reflect.Type, opts marshalOptions) ([]byte, error) {
+	s := p.PointerSlice()
+	var err error
+	for _, v := range s {
+		m := asMessage(v.AsValueOf(messageType.Elem()))
+		b = protowire.AppendVarint(b, wiretag) // start group
+		b, err = opts.Options().MarshalAppend(b, m)
+		if err != nil {
+			return b, err
+		}
+		b = protowire.AppendVarint(b, wiretag+1) // end group
+	}
+	return b, nil
+}
+
+func consumeGroupSlice(b []byte, p pointer, num protowire.Number, wtyp protowire.Type, goType reflect.Type, opts unmarshalOptions) (out unmarshalOutput, err error) {
+	if wtyp != protowire.StartGroupType {
+		return out, errUnknown
+	}
+	b, n := protowire.ConsumeGroup(num, b)
+	if n < 0 {
+		return out, protowire.ParseError(n)
+	}
+	mp := reflect.New(goType.Elem())
+	o, err := opts.Options().UnmarshalState(piface.UnmarshalInput{
+		Buf:     b,
+		Message: asMessage(mp).ProtoReflect(),
+	})
+	if err != nil {
+		return out, err
+	}
+	p.AppendPointerSlice(pointerOfValue(mp))
+	out.n = n
+	out.initialized = o.Flags&piface.UnmarshalInitialized != 0
+	return out, nil
+}
+
+func sizeGroupSliceInfo(p pointer, f *coderFieldInfo, opts marshalOptions) int {
+	s := p.PointerSlice()
+	n := 0
+	for _, v := range s {
+		n += 2*f.tagsize + f.mi.sizePointer(v, opts)
+	}
+	return n
+}
+
+func appendGroupSliceInfo(b []byte, p pointer, f *coderFieldInfo, opts marshalOptions) ([]byte, error) {
+	s := p.PointerSlice()
+	var err error
+	for _, v := range s {
+		b = protowire.AppendVarint(b, f.wiretag) // start group
+		b, err = f.mi.marshalAppendPointer(b, v, opts)
+		if err != nil {
+			return b, err
+		}
+		b = protowire.AppendVarint(b, f.wiretag+1) // end group
+	}
+	return b, nil
+}
+
+func consumeGroupSliceInfo(b []byte, p pointer, wtyp protowire.Type, f *coderFieldInfo, opts unmarshalOptions) (unmarshalOutput, error) {
+	if wtyp != protowire.StartGroupType {
+		return unmarshalOutput{}, errUnknown
+	}
+	m := reflect.New(f.mi.GoReflectType.Elem()).Interface()
+	mp := pointerOfIface(m)
+	out, err := f.mi.unmarshalPointer(b, mp, f.num, opts)
+	if err != nil {
+		return out, err
+	}
+	p.AppendPointerSlice(mp)
+	return out, nil
+}
+
+func asMessage(v reflect.Value) pref.ProtoMessage {
+	if m, ok := v.Interface().(pref.ProtoMessage); ok {
+		return m
+	}
+	return legacyWrapMessage(v).Interface()
+}

vendor/google.golang.org/protobuf/internal/impl/codec_map.go

@@ -0,0 +1,388 @@
+// Copyright 2019 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package impl
+
+import (
+	"errors"
+	"reflect"
+	"sort"
+
+	"google.golang.org/protobuf/encoding/protowire"
+	pref "google.golang.org/protobuf/reflect/protoreflect"
+)
+
+type mapInfo struct {
+	goType     reflect.Type
+	keyWiretag uint64
+	valWiretag uint64
+	keyFuncs   valueCoderFuncs
+	valFuncs   valueCoderFuncs
+	keyZero    pref.Value
+	keyKind    pref.Kind
+	conv       *mapConverter
+}
+
+func encoderFuncsForMap(fd pref.FieldDescriptor, ft reflect.Type) (valueMessage *MessageInfo, funcs pointerCoderFuncs) {
+	// TODO: Consider generating specialized map coders.
+	keyField := fd.MapKey()
+	valField := fd.MapValue()
+	keyWiretag := protowire.EncodeTag(1, wireTypes[keyField.Kind()])
+	valWiretag := protowire.EncodeTag(2, wireTypes[valField.Kind()])
+	keyFuncs := encoderFuncsForValue(keyField)
+	valFuncs := encoderFuncsForValue(valField)
+	conv := newMapConverter(ft, fd)
+
+	mapi := &mapInfo{
+		goType:     ft,
+		keyWiretag: keyWiretag,
+		valWiretag: valWiretag,
+		keyFuncs:   keyFuncs,
+		valFuncs:   valFuncs,
+		keyZero:    keyField.Default(),
+		keyKind:    keyField.Kind(),
+		conv:       conv,
+	}
+	if valField.Kind() == pref.MessageKind {
+		valueMessage = getMessageInfo(ft.Elem())
+	}
+
+	funcs = pointerCoderFuncs{
+		size: func(p pointer, f *coderFieldInfo, opts marshalOptions) int {
+			return sizeMap(p.AsValueOf(ft).Elem(), mapi, f, opts)
+		},
+		marshal: func(b []byte, p pointer, f *coderFieldInfo, opts marshalOptions) ([]byte, error) {
+			return appendMap(b, p.AsValueOf(ft).Elem(), mapi, f, opts)
+		},
+		unmarshal: func(b []byte, p pointer, wtyp protowire.Type, f *coderFieldInfo, opts unmarshalOptions) (unmarshalOutput, error) {
+			mp := p.AsValueOf(ft)
+			if mp.Elem().IsNil() {
+				mp.Elem().Set(reflect.MakeMap(mapi.goType))
+			}
+			if f.mi == nil {
+				return consumeMap(b, mp.Elem(), wtyp, mapi, f, opts)
+			} else {
+				return consumeMapOfMessage(b, mp.Elem(), wtyp, mapi, f, opts)
+			}
+		},
+	}
+	switch valField.Kind() {
+	case pref.MessageKind:
+		funcs.merge = mergeMapOfMessage
+	case pref.BytesKind:
+		funcs.merge = mergeMapOfBytes
+	default:
+		funcs.merge = mergeMap
+	}
+	if valFuncs.isInit != nil {
+		funcs.isInit = func(p pointer, f *coderFieldInfo) error {
+			return isInitMap(p.AsValueOf(ft).Elem(), mapi, f)
+		}
+	}
+	return valueMessage, funcs
+}
+
+const (
+	mapKeyTagSize = 1 // field 1, tag size 1.
+	mapValTagSize = 1 // field 2, tag size 2.
+)
+
+func sizeMap(mapv reflect.Value, mapi *mapInfo, f *coderFieldInfo, opts marshalOptions) int {
+	if mapv.Len() == 0 {
+		return 0
+	}
+	n := 0
+	iter := mapRange(mapv)
+	for iter.Next() {
+		key := mapi.conv.keyConv.PBValueOf(iter.Key()).MapKey()
+		keySize := mapi.keyFuncs.size(key.Value(), mapKeyTagSize, opts)
+		var valSize int
+		value := mapi.conv.valConv.PBValueOf(iter.Value())
+		if f.mi == nil {
+			valSize = mapi.valFuncs.size(value, mapValTagSize, opts)
+		} else {
+			p := pointerOfValue(iter.Value())
+			valSize += mapValTagSize
+			valSize += protowire.SizeBytes(f.mi.sizePointer(p, opts))
+		}
+		n += f.tagsize + protowire.SizeBytes(keySize+valSize)
+	}
+	return n
+}
+
+func consumeMap(b []byte, mapv reflect.Value, wtyp protowire.Type, mapi *mapInfo, f *coderFieldInfo, opts unmarshalOptions) (out unmarshalOutput, err error) {
+	if wtyp != protowire.BytesType {
+		return out, errUnknown
+	}
+	b, n := protowire.ConsumeBytes(b)
+	if n < 0 {
+		return out, protowire.ParseError(n)
+	}
+	var (
+		key = mapi.keyZero
+		val = mapi.conv.valConv.New()
+	)
+	for len(b) > 0 {
+		num, wtyp, n := protowire.ConsumeTag(b)
+		if n < 0 {
+			return out, protowire.ParseError(n)
+		}
+		if num > protowire.MaxValidNumber {
+			return out, errors.New("invalid field number")
+		}
+		b = b[n:]
+		err := errUnknown
+		switch num {
+		case 1:
+			var v pref.Value
+			var o unmarshalOutput
+			v, o, err = mapi.keyFuncs.unmarshal(b, key, num, wtyp, opts)
+			if err != nil {
+				break
+			}
+			key = v
+			n = o.n
+		case 2:
+			var v pref.Value
+			var o unmarshalOutput
+			v, o, err = mapi.valFuncs.unmarshal(b, val, num, wtyp, opts)
+			if err != nil {
+				break
+			}
+			val = v
+			n = o.n
+		}
+		if err == errUnknown {
+			n = protowire.ConsumeFieldValue(num, wtyp, b)
+			if n < 0 {
+				return out, protowire.ParseError(n)
+			}
+		} else if err != nil {
+			return out, err
+		}
+		b = b[n:]
+	}
+	mapv.SetMapIndex(mapi.conv.keyConv.GoValueOf(key), mapi.conv.valConv.GoValueOf(val))
+	out.n = n
+	return out, nil
+}
+
+func consumeMapOfMessage(b []byte, mapv reflect.Value, wtyp protowire.Type, mapi *mapInfo, f *coderFieldInfo, opts unmarshalOptions) (out unmarshalOutput, err error) {
+	if wtyp != protowire.BytesType {
+		return out, errUnknown
+	}
+	b, n := protowire.ConsumeBytes(b)
+	if n < 0 {
+		return out, protowire.ParseError(n)
+	}
+	var (
+		key = mapi.keyZero
+		val = reflect.New(f.mi.GoReflectType.Elem())
+	)
+	for len(b) > 0 {
+		num, wtyp, n := protowire.ConsumeTag(b)
+		if n < 0 {
+			return out, protowire.ParseError(n)
+		}
+		if num > protowire.MaxValidNumber {
+			return out, errors.New("invalid field number")
+		}
+		b = b[n:]
+		err := errUnknown
+		switch num {
+		case 1:
+			var v pref.Value
+			var o unmarshalOutput
+			v, o, err = mapi.keyFuncs.unmarshal(b, key, num, wtyp, opts)
+			if err != nil {
+				break
+			}
+			key = v
+			n = o.n
+		case 2:
+			if wtyp != protowire.BytesType {
+				break
+			}
+			var v []byte
+			v, n = protowire.ConsumeBytes(b)
+			if n < 0 {
+				return out, protowire.ParseError(n)
+			}
+			var o unmarshalOutput
+			o, err = f.mi.unmarshalPointer(v, pointerOfValue(val), 0, opts)
+			if o.initialized {
+				// Consider this map item initialized so long as we see
+				// an initialized value.
+				out.initialized = true
+			}
+		}
+		if err == errUnknown {
+			n = protowire.ConsumeFieldValue(num, wtyp, b)
+			if n < 0 {
+				return out, protowire.ParseError(n)
+			}
+		} else if err != nil {
+			return out, err
+		}
+		b = b[n:]
+	}
+	mapv.SetMapIndex(mapi.conv.keyConv.GoValueOf(key), val)
+	out.n = n
+	return out, nil
+}
+
+func appendMapItem(b []byte, keyrv, valrv reflect.Value, mapi *mapInfo, f *coderFieldInfo, opts marshalOptions) ([]byte, error) {
+	if f.mi == nil {
+		key := mapi.conv.keyConv.PBValueOf(keyrv).MapKey()
+		val := mapi.conv.valConv.PBValueOf(valrv)
+		size := 0
+		size += mapi.keyFuncs.size(key.Value(), mapKeyTagSize, opts)
+		size += mapi.valFuncs.size(val, mapValTagSize, opts)
+		b = protowire.AppendVarint(b, uint64(size))
+		b, err := mapi.keyFuncs.marshal(b, key.Value(), mapi.keyWiretag, opts)
+		if err != nil {
+			return nil, err
+		}
+		return mapi.valFuncs.marshal(b, val, mapi.valWiretag, opts)
+	} else {
+		key := mapi.conv.keyConv.PBValueOf(keyrv).MapKey()
+		val := pointerOfValue(valrv)
+		valSize := f.mi.sizePointer(val, opts)
+		size := 0
+		size += mapi.keyFuncs.size(key.Value(), mapKeyTagSize, opts)
+		size += mapValTagSize + protowire.SizeBytes(valSize)
+		b = protowire.AppendVarint(b, uint64(size))
+		b, err := mapi.keyFuncs.marshal(b, key.Value(), mapi.keyWiretag, opts)
+		if err != nil {
+			return nil, err
+		}
+		b = protowire.AppendVarint(b, mapi.valWiretag)
+		b = protowire.AppendVarint(b, uint64(valSize))
+		return f.mi.marshalAppendPointer(b, val, opts)
+	}
+}
+
+func appendMap(b []byte, mapv reflect.Value, mapi *mapInfo, f *coderFieldInfo, opts marshalOptions) ([]byte, error) {
+	if mapv.Len() == 0 {
+		return b, nil
+	}
+	if opts.Deterministic() {
+		return appendMapDeterministic(b, mapv, mapi, f, opts)
+	}
+	iter := mapRange(mapv)
+	for iter.Next() {
+		var err error
+		b = protowire.AppendVarint(b, f.wiretag)
+		b, err = appendMapItem(b, iter.Key(), iter.Value(), mapi, f, opts)
+		if err != nil {
+			return b, err
+		}
+	}
+	return b, nil
+}
+
+func appendMapDeterministic(b []byte, mapv reflect.Value, mapi *mapInfo, f *coderFieldInfo, opts marshalOptions) ([]byte, error) {
+	keys := mapv.MapKeys()
+	sort.Slice(keys, func(i, j int) bool {
+		switch keys[i].Kind() {
+		case reflect.Bool:
+			return !keys[i].Bool() && keys[j].Bool()
+		case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
+			return keys[i].Int() < keys[j].Int()
+		case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64, reflect.Uintptr:
+			return keys[i].Uint() < keys[j].Uint()
+		case reflect.Float32, reflect.Float64:
+			return keys[i].Float() < keys[j].Float()
+		case reflect.String:
+			return keys[i].String() < keys[j].String()
+		default:
+			panic("invalid kind: " + keys[i].Kind().String())
+		}
+	})
+	for _, key := range keys {
+		var err error
+		b = protowire.AppendVarint(b, f.wiretag)
+		b, err = appendMapItem(b, key, mapv.MapIndex(key), mapi, f, opts)
+		if err != nil {
+			return b, err
+		}
+	}
+	return b, nil
+}
+
+func isInitMap(mapv reflect.Value, mapi *mapInfo, f *coderFieldInfo) error {
+	if mi := f.mi; mi != nil {
+		mi.init()
+		if !mi.needsInitCheck {
+			return nil
+		}
+		iter := mapRange(mapv)
+		for iter.Next() {
+			val := pointerOfValue(iter.Value())
+			if err := mi.checkInitializedPointer(val); err != nil {
+				return err
+			}
+		}
+	} else {
+		iter := mapRange(mapv)
+		for iter.Next() {
+			val := mapi.conv.valConv.PBValueOf(iter.Value())
+			if err := mapi.valFuncs.isInit(val); err != nil {
+				return err
+			}
+		}
+	}
+	return nil
+}
+
+func mergeMap(dst, src pointer, f *coderFieldInfo, opts mergeOptions) {
+	dstm := dst.AsValueOf(f.ft).Elem()
+	srcm := src.AsValueOf(f.ft).Elem()
+	if srcm.Len() == 0 {
+		return
+	}
+	if dstm.IsNil() {
+		dstm.Set(reflect.MakeMap(f.ft))
+	}
+	iter := mapRange(srcm)
+	for iter.Next() {
+		dstm.SetMapIndex(iter.Key(), iter.Value())
+	}
+}
+
+func mergeMapOfBytes(dst, src pointer, f *coderFieldInfo, opts mergeOptions) {
+	dstm := dst.AsValueOf(f.ft).Elem()
+	srcm := src.AsValueOf(f.ft).Elem()
+	if srcm.Len() == 0 {
+		return
+	}
+	if dstm.IsNil() {
+		dstm.Set(reflect.MakeMap(f.ft))
+	}
+	iter := mapRange(srcm)
+	for iter.Next() {
+		dstm.SetMapIndex(iter.Key(), reflect.ValueOf(append(emptyBuf[:], iter.Value().Bytes()...)))
+	}
+}
+
+func mergeMapOfMessage(dst, src pointer, f *coderFieldInfo, opts mergeOptions) {
+	dstm := dst.AsValueOf(f.ft).Elem()
+	srcm := src.AsValueOf(f.ft).Elem()
+	if srcm.Len() == 0 {
+		return
+	}
+	if dstm.IsNil() {
+		dstm.Set(reflect.MakeMap(f.ft))
+	}
+	iter := mapRange(srcm)
+	for iter.Next() {
+		val := reflect.New(f.ft.Elem().Elem())
+		if f.mi != nil {
+			f.mi.mergePointer(pointerOfValue(val), pointerOfValue(iter.Value()), opts)
+		} else {
+			opts.Merge(asMessage(val), asMessage(iter.Value()))
+		}
+		dstm.SetMapIndex(iter.Key(), val)
+	}
+}

vendor/google.golang.org/protobuf/internal/impl/codec_map_go111.go

@@ -0,0 +1,37 @@
+// Copyright 2019 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build !go1.12
+
+package impl
+
+import "reflect"
+
+type mapIter struct {
+	v    reflect.Value
+	keys []reflect.Value
+}
+
+// mapRange provides a less-efficient equivalent to
+// the Go 1.12 reflect.Value.MapRange method.
+func mapRange(v reflect.Value) *mapIter {
+	return &mapIter{v: v}
+}
+
+func (i *mapIter) Next() bool {
+	if i.keys == nil {
+		i.keys = i.v.MapKeys()
+	} else {
+		i.keys = i.keys[1:]
+	}
+	return len(i.keys) > 0
+}
+
+func (i *mapIter) Key() reflect.Value {
+	return i.keys[0]
+}
+
+func (i *mapIter) Value() reflect.Value {
+	return i.v.MapIndex(i.keys[0])
+}

vendor/google.golang.org/protobuf/internal/impl/codec_map_go112.go

@@ -0,0 +1,11 @@
+// Copyright 2019 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build go1.12
+
+package impl
+
+import "reflect"
+
+func mapRange(v reflect.Value) *reflect.MapIter { return v.MapRange() }

vendor/google.golang.org/protobuf/internal/impl/codec_message.go

@@ -0,0 +1,159 @@
+// Copyright 2019 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package impl
+
+import (
+	"fmt"
+	"reflect"
+	"sort"
+
+	"google.golang.org/protobuf/encoding/protowire"
+	"google.golang.org/protobuf/internal/encoding/messageset"
+	"google.golang.org/protobuf/internal/fieldsort"
+	pref "google.golang.org/protobuf/reflect/protoreflect"
+	piface "google.golang.org/protobuf/runtime/protoiface"
+)
+
+// coderMessageInfo contains per-message information used by the fast-path functions.
+// This is a different type from MessageInfo to keep MessageInfo as general-purpose as
+// possible.
+type coderMessageInfo struct {
+	methods piface.Methods
+
+	orderedCoderFields []*coderFieldInfo
+	denseCoderFields   []*coderFieldInfo
+	coderFields        map[protowire.Number]*coderFieldInfo
+	sizecacheOffset    offset
+	unknownOffset      offset
+	extensionOffset    offset
+	needsInitCheck     bool
+	isMessageSet       bool
+	numRequiredFields  uint8
+}
+
+type coderFieldInfo struct {
+	funcs      pointerCoderFuncs // fast-path per-field functions
+	mi         *MessageInfo      // field's message
+	ft         reflect.Type
+	validation validationInfo   // information used by message validation
+	num        pref.FieldNumber // field number
+	offset     offset           // struct field offset
+	wiretag    uint64           // field tag (number + wire type)
+	tagsize    int              // size of the varint-encoded tag
+	isPointer  bool             // true if IsNil may be called on the struct field
+	isRequired bool             // true if field is required
+}
+
+func (mi *MessageInfo) makeCoderMethods(t reflect.Type, si structInfo) {
+	mi.sizecacheOffset = si.sizecacheOffset
+	mi.unknownOffset = si.unknownOffset
+	mi.extensionOffset = si.extensionOffset
+
+	mi.coderFields = make(map[protowire.Number]*coderFieldInfo)
+	fields := mi.Desc.Fields()
+	preallocFields := make([]coderFieldInfo, fields.Len())
+	for i := 0; i < fields.Len(); i++ {
+		fd := fields.Get(i)
+
+		fs := si.fieldsByNumber[fd.Number()]
+		isOneof := fd.ContainingOneof() != nil && !fd.ContainingOneof().IsSynthetic()
+		if isOneof {
+			fs = si.oneofsByName[fd.ContainingOneof().Name()]
+		}
+		ft := fs.Type
+		var wiretag uint64
+		if !fd.IsPacked() {
+			wiretag = protowire.EncodeTag(fd.Number(), wireTypes[fd.Kind()])
+		} else {
+			wiretag = protowire.EncodeTag(fd.Number(), protowire.BytesType)
+		}
+		var fieldOffset offset
+		var funcs pointerCoderFuncs
+		var childMessage *MessageInfo
+		switch {
+		case isOneof:
+			fieldOffset = offsetOf(fs, mi.Exporter)
+		case fd.IsWeak():
+			fieldOffset = si.weakOffset
+			funcs = makeWeakMessageFieldCoder(fd)
+		default:
+			fieldOffset = offsetOf(fs, mi.Exporter)
+			childMessage, funcs = fieldCoder(fd, ft)
+		}
+		cf := &preallocFields[i]
+		*cf = coderFieldInfo{
+			num:        fd.Number(),
+			offset:     fieldOffset,
+			wiretag:    wiretag,
+			ft:         ft,
+			tagsize:    protowire.SizeVarint(wiretag),
+			funcs:      funcs,
+			mi:         childMessage,
+			validation: newFieldValidationInfo(mi, si, fd, ft),
+			isPointer:  fd.Cardinality() == pref.Repeated || fd.HasPresence(),
+			isRequired: fd.Cardinality() == pref.Required,
+		}
+		mi.orderedCoderFields = append(mi.orderedCoderFields, cf)
+		mi.coderFields[cf.num] = cf
+	}
+	for i, oneofs := 0, mi.Desc.Oneofs(); i < oneofs.Len(); i++ {
+		if od := oneofs.Get(i); !od.IsSynthetic() {
+			mi.initOneofFieldCoders(od, si)
+		}
+	}
+	if messageset.IsMessageSet(mi.Desc) {
+		if !mi.extensionOffset.IsValid() {
+			panic(fmt.Sprintf("%v: MessageSet with no extensions field", mi.Desc.FullName()))
+		}
+		if !mi.unknownOffset.IsValid() {
+			panic(fmt.Sprintf("%v: MessageSet with no unknown field", mi.Desc.FullName()))
+		}
+		mi.isMessageSet = true
+	}
+	sort.Slice(mi.orderedCoderFields, func(i, j int) bool {
+		return mi.orderedCoderFields[i].num < mi.orderedCoderFields[j].num
+	})
+
+	var maxDense pref.FieldNumber
+	for _, cf := range mi.orderedCoderFields {
+		if cf.num >= 16 && cf.num >= 2*maxDense {
+			break
+		}
+		maxDense = cf.num
+	}
+	mi.denseCoderFields = make([]*coderFieldInfo, maxDense+1)
+	for _, cf := range mi.orderedCoderFields {
+		if int(cf.num) >= len(mi.denseCoderFields) {
+			break
+		}
+		mi.denseCoderFields[cf.num] = cf
+	}
+
+	// To preserve compatibility with historic wire output, marshal oneofs last.
+	if mi.Desc.Oneofs().Len() > 0 {
+		sort.Slice(mi.orderedCoderFields, func(i, j int) bool {
+			fi := fields.ByNumber(mi.orderedCoderFields[i].num)
+			fj := fields.ByNumber(mi.orderedCoderFields[j].num)
+			return fieldsort.Less(fi, fj)
+		})
+	}
+
+	mi.needsInitCheck = needsInitCheck(mi.Desc)
+	if mi.methods.Marshal == nil && mi.methods.Size == nil {
+		mi.methods.Flags |= piface.SupportMarshalDeterministic
+		mi.methods.Marshal = mi.marshal
+		mi.methods.Size = mi.size
+	}
+	if mi.methods.Unmarshal == nil {
+		mi.methods.Flags |= piface.SupportUnmarshalDiscardUnknown
+		mi.methods.Unmarshal = mi.unmarshal
+	}
+	if mi.methods.CheckInitialized == nil {
+		mi.methods.CheckInitialized = mi.checkInitialized
+	}
+	if mi.methods.Merge == nil {
+		mi.methods.Merge = mi.merge
+	}
+}

vendor/google.golang.org/protobuf/internal/impl/codec_messageset.go

@@ -0,0 +1,120 @@
+// Copyright 2019 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package impl
+
+import (
+	"sort"
+
+	"google.golang.org/protobuf/encoding/protowire"
+	"google.golang.org/protobuf/internal/encoding/messageset"
+	"google.golang.org/protobuf/internal/errors"
+	"google.golang.org/protobuf/internal/flags"
+)
+
+func sizeMessageSet(mi *MessageInfo, p pointer, opts marshalOptions) (size int) {
+	if !flags.ProtoLegacy {
+		return 0
+	}
+
+	ext := *p.Apply(mi.extensionOffset).Extensions()
+	for _, x := range ext {
+		xi := getExtensionFieldInfo(x.Type())
+		if xi.funcs.size == nil {
+			continue
+		}
+		num, _ := protowire.DecodeTag(xi.wiretag)
+		size += messageset.SizeField(num)
+		size += xi.funcs.size(x.Value(), protowire.SizeTag(messageset.FieldMessage), opts)
+	}
+
+	unknown := *p.Apply(mi.unknownOffset).Bytes()
+	size += messageset.SizeUnknown(unknown)
+
+	return size
+}
+
+func marshalMessageSet(mi *MessageInfo, b []byte, p pointer, opts marshalOptions) ([]byte, error) {
+	if !flags.ProtoLegacy {
+		return b, errors.New("no support for message_set_wire_format")
+	}
+
+	ext := *p.Apply(mi.extensionOffset).Extensions()
+	switch len(ext) {
+	case 0:
+	case 1:
+		// Fast-path for one extension: Don't bother sorting the keys.
+		for _, x := range ext {
+			var err error
+			b, err = marshalMessageSetField(mi, b, x, opts)
+			if err != nil {
+				return b, err
+			}
+		}
+	default:
+		// Sort the keys to provide a deterministic encoding.
+		// Not sure this is required, but the old code does it.
+		keys := make([]int, 0, len(ext))
+		for k := range ext {
+			keys = append(keys, int(k))
+		}
+		sort.Ints(keys)
+		for _, k := range keys {
+			var err error
+			b, err = marshalMessageSetField(mi, b, ext[int32(k)], opts)
+			if err != nil {
+				return b, err
+			}
+		}
+	}
+
+	unknown := *p.Apply(mi.unknownOffset).Bytes()
+	b, err := messageset.AppendUnknown(b, unknown)
+	if err != nil {
+		return b, err
+	}
+
+	return b, nil
+}
+
+func marshalMessageSetField(mi *MessageInfo, b []byte, x ExtensionField, opts marshalOptions) ([]byte, error) {
+	xi := getExtensionFieldInfo(x.Type())
+	num, _ := protowire.DecodeTag(xi.wiretag)
+	b = messageset.AppendFieldStart(b, num)
+	b, err := xi.funcs.marshal(b, x.Value(), protowire.EncodeTag(messageset.FieldMessage, protowire.BytesType), opts)
+	if err != nil {
+		return b, err
+	}
+	b = messageset.AppendFieldEnd(b)
+	return b, nil
+}
+
+func unmarshalMessageSet(mi *MessageInfo, b []byte, p pointer, opts unmarshalOptions) (out unmarshalOutput, err error) {
+	if !flags.ProtoLegacy {
+		return out, errors.New("no support for message_set_wire_format")
+	}
+
+	ep := p.Apply(mi.extensionOffset).Extensions()
+	if *ep == nil {
+		*ep = make(map[int32]ExtensionField)
+	}
+	ext := *ep
+	unknown := p.Apply(mi.unknownOffset).Bytes()
+	initialized := true
+	err = messageset.Unmarshal(b, true, func(num protowire.Number, v []byte) error {
+		o, err := mi.unmarshalExtension(v, num, protowire.BytesType, ext, opts)
+		if err == errUnknown {
+			*unknown = protowire.AppendTag(*unknown, num, protowire.BytesType)
+			*unknown = append(*unknown, v...)
+			return nil
+		}
+		if !o.initialized {
+			initialized = false
+		}
+		return err
+	})
+	out.n = len(b)
+	out.initialized = initialized
+	return out, err
+}

vendor/google.golang.org/protobuf/internal/impl/codec_reflect.go

@@ -0,0 +1,209 @@
+// Copyright 2019 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build purego appengine
+
+package impl
+
+import (
+	"reflect"
+
+	"google.golang.org/protobuf/encoding/protowire"
+)
+
+func sizeEnum(p pointer, f *coderFieldInfo, _ marshalOptions) (size int) {
+	v := p.v.Elem().Int()
+	return f.tagsize + protowire.SizeVarint(uint64(v))
+}
+
+func appendEnum(b []byte, p pointer, f *coderFieldInfo, opts marshalOptions) ([]byte, error) {
+	v := p.v.Elem().Int()
+	b = protowire.AppendVarint(b, f.wiretag)
+	b = protowire.AppendVarint(b, uint64(v))
+	return b, nil
+}
+
+func consumeEnum(b []byte, p pointer, wtyp protowire.Type, f *coderFieldInfo, _ unmarshalOptions) (out unmarshalOutput, err error) {
+	if wtyp != protowire.VarintType {
+		return out, errUnknown
+	}
+	v, n := protowire.ConsumeVarint(b)
+	if n < 0 {
+		return out, protowire.ParseError(n)
+	}
+	p.v.Elem().SetInt(int64(v))
+	out.n = n
+	return out, nil
+}
+
+func mergeEnum(dst, src pointer, _ *coderFieldInfo, _ mergeOptions) {
+	dst.v.Elem().Set(src.v.Elem())
+}
+
+var coderEnum = pointerCoderFuncs{
+	size:      sizeEnum,
+	marshal:   appendEnum,
+	unmarshal: consumeEnum,
+	merge:     mergeEnum,
+}
+
+func sizeEnumNoZero(p pointer, f *coderFieldInfo, opts marshalOptions) (size int) {
+	if p.v.Elem().Int() == 0 {
+		return 0
+	}
+	return sizeEnum(p, f, opts)
+}
+
+func appendEnumNoZero(b []byte, p pointer, f *coderFieldInfo, opts marshalOptions) ([]byte, error) {
+	if p.v.Elem().Int() == 0 {
+		return b, nil
+	}
+	return appendEnum(b, p, f, opts)
+}
+
+func mergeEnumNoZero(dst, src pointer, _ *coderFieldInfo, _ mergeOptions) {
+	if src.v.Elem().Int() != 0 {
+		dst.v.Elem().Set(src.v.Elem())
+	}
+}
+
+var coderEnumNoZero = pointerCoderFuncs{
+	size:      sizeEnumNoZero,
+	marshal:   appendEnumNoZero,
+	unmarshal: consumeEnum,
+	merge:     mergeEnumNoZero,
+}
+
+func sizeEnumPtr(p pointer, f *coderFieldInfo, opts marshalOptions) (size int) {
+	return sizeEnum(pointer{p.v.Elem()}, f, opts)
+}
+
+func appendEnumPtr(b []byte, p pointer, f *coderFieldInfo, opts marshalOptions) ([]byte, error) {
+	return appendEnum(b, pointer{p.v.Elem()}, f, opts)
+}
+
+func consumeEnumPtr(b []byte, p pointer, wtyp protowire.Type, f *coderFieldInfo, opts unmarshalOptions) (out unmarshalOutput, err error) {
+	if wtyp != protowire.VarintType {
+		return out, errUnknown
+	}
+	if p.v.Elem().IsNil() {
+		p.v.Elem().Set(reflect.New(p.v.Elem().Type().Elem()))
+	}
+	return consumeEnum(b, pointer{p.v.Elem()}, wtyp, f, opts)
+}
+
+func mergeEnumPtr(dst, src pointer, _ *coderFieldInfo, _ mergeOptions) {
+	if !src.v.Elem().IsNil() {
+		v := reflect.New(dst.v.Type().Elem().Elem())
+		v.Elem().Set(src.v.Elem().Elem())
+		dst.v.Elem().Set(v)
+	}
+}
+
+var coderEnumPtr = pointerCoderFuncs{
+	size:      sizeEnumPtr,
+	marshal:   appendEnumPtr,
+	unmarshal: consumeEnumPtr,
+	merge:     mergeEnumPtr,
+}
+
+func sizeEnumSlice(p pointer, f *coderFieldInfo, opts marshalOptions) (size int) {
+	s := p.v.Elem()
+	for i, llen := 0, s.Len(); i < llen; i++ {
+		size += protowire.SizeVarint(uint64(s.Index(i).Int())) + f.tagsize
+	}
+	return size
+}
+
+func appendEnumSlice(b []byte, p pointer, f *coderFieldInfo, opts marshalOptions) ([]byte, error) {
+	s := p.v.Elem()
+	for i, llen := 0, s.Len(); i < llen; i++ {
+		b = protowire.AppendVarint(b, f.wiretag)
+		b = protowire.AppendVarint(b, uint64(s.Index(i).Int()))
+	}
+	return b, nil
+}
+
+func consumeEnumSlice(b []byte, p pointer, wtyp protowire.Type, f *coderFieldInfo, opts unmarshalOptions) (out unmarshalOutput, err error) {
+	s := p.v.Elem()
+	if wtyp == protowire.BytesType {
+		b, n := protowire.ConsumeBytes(b)
+		if n < 0 {
+			return out, protowire.ParseError(n)
+		}
+		for len(b) > 0 {
+			v, n := protowire.ConsumeVarint(b)
+			if n < 0 {
+				return out, protowire.ParseError(n)
+			}
+			rv := reflect.New(s.Type().Elem()).Elem()
+			rv.SetInt(int64(v))
+			s.Set(reflect.Append(s, rv))
+			b = b[n:]
+		}
+		out.n = n
+		return out, nil
+	}
+	if wtyp != protowire.VarintType {
+		return out, errUnknown
+	}
+	v, n := protowire.ConsumeVarint(b)
+	if n < 0 {
+		return out, protowire.ParseError(n)
+	}
+	rv := reflect.New(s.Type().Elem()).Elem()
+	rv.SetInt(int64(v))
+	s.Set(reflect.Append(s, rv))
+	out.n = n
+	return out, nil
+}
+
+func mergeEnumSlice(dst, src pointer, _ *coderFieldInfo, _ mergeOptions) {
+	dst.v.Elem().Set(reflect.AppendSlice(dst.v.Elem(), src.v.Elem()))
+}
+
+var coderEnumSlice = pointerCoderFuncs{
+	size:      sizeEnumSlice,
+	marshal:   appendEnumSlice,
+	unmarshal: consumeEnumSlice,
+	merge:     mergeEnumSlice,
+}
+
+func sizeEnumPackedSlice(p pointer, f *coderFieldInfo, opts marshalOptions) (size int) {
+	s := p.v.Elem()
+	llen := s.Len()
+	if llen == 0 {
+		return 0
+	}
+	n := 0
+	for i := 0; i < llen; i++ {
+		n += protowire.SizeVarint(uint64(s.Index(i).Int()))
+	}
+	return f.tagsize + protowire.SizeBytes(n)
+}
+
+func appendEnumPackedSlice(b []byte, p pointer, f *coderFieldInfo, opts marshalOptions) ([]byte, error) {
+	s := p.v.Elem()
+	llen := s.Len()
+	if llen == 0 {
+		return b, nil
+	}
+	b = protowire.AppendVarint(b, f.wiretag)
+	n := 0
+	for i := 0; i < llen; i++ {
+		n += protowire.SizeVarint(uint64(s.Index(i).Int()))
+	}
+	b = protowire.AppendVarint(b, uint64(n))
+	for i := 0; i < llen; i++ {
+		b = protowire.AppendVarint(b, uint64(s.Index(i).Int()))
+	}
+	return b, nil
+}
+
+var coderEnumPackedSlice = pointerCoderFuncs{
+	size:      sizeEnumPackedSlice,
+	marshal:   appendEnumPackedSlice,
+	unmarshal: consumeEnumSlice,
+	merge:     mergeEnumSlice,
+}

vendor/google.golang.org/protobuf/internal/impl/codec_tables.go

@@ -0,0 +1,557 @@
+// Copyright 2019 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package impl
+
+import (
+	"fmt"
+	"reflect"
+
+	"google.golang.org/protobuf/encoding/protowire"
+	"google.golang.org/protobuf/internal/strs"
+	pref "google.golang.org/protobuf/reflect/protoreflect"
+)
+
+// pointerCoderFuncs is a set of pointer encoding functions.
+type pointerCoderFuncs struct {
+	mi        *MessageInfo
+	size      func(p pointer, f *coderFieldInfo, opts marshalOptions) int
+	marshal   func(b []byte, p pointer, f *coderFieldInfo, opts marshalOptions) ([]byte, error)
+	unmarshal func(b []byte, p pointer, wtyp protowire.Type, f *coderFieldInfo, opts unmarshalOptions) (unmarshalOutput, error)
+	isInit    func(p pointer, f *coderFieldInfo) error
+	merge     func(dst, src pointer, f *coderFieldInfo, opts mergeOptions)
+}
+
+// valueCoderFuncs is a set of protoreflect.Value encoding functions.
+type valueCoderFuncs struct {
+	size      func(v pref.Value, tagsize int, opts marshalOptions) int
+	marshal   func(b []byte, v pref.Value, wiretag uint64, opts marshalOptions) ([]byte, error)
+	unmarshal func(b []byte, v pref.Value, num protowire.Number, wtyp protowire.Type, opts unmarshalOptions) (pref.Value, unmarshalOutput, error)
+	isInit    func(v pref.Value) error
+	merge     func(dst, src pref.Value, opts mergeOptions) pref.Value
+}
+
+// fieldCoder returns pointer functions for a field, used for operating on
+// struct fields.
+func fieldCoder(fd pref.FieldDescriptor, ft reflect.Type) (*MessageInfo, pointerCoderFuncs) {
+	switch {
+	case fd.IsMap():
+		return encoderFuncsForMap(fd, ft)
+	case fd.Cardinality() == pref.Repeated && !fd.IsPacked():
+		// Repeated fields (not packed).
+		if ft.Kind() != reflect.Slice {
+			break
+		}
+		ft := ft.Elem()
+		switch fd.Kind() {
+		case pref.BoolKind:
+			if ft.Kind() == reflect.Bool {
+				return nil, coderBoolSlice
+			}
+		case pref.EnumKind:
+			if ft.Kind() == reflect.Int32 {
+				return nil, coderEnumSlice
+			}
+		case pref.Int32Kind:
+			if ft.Kind() == reflect.Int32 {
+				return nil, coderInt32Slice
+			}
+		case pref.Sint32Kind:
+			if ft.Kind() == reflect.Int32 {
+				return nil, coderSint32Slice
+			}
+		case pref.Uint32Kind:
+			if ft.Kind() == reflect.Uint32 {
+				return nil, coderUint32Slice
+			}
+		case pref.Int64Kind:
+			if ft.Kind() == reflect.Int64 {
+				return nil, coderInt64Slice
+			}
+		case pref.Sint64Kind:
+			if ft.Kind() == reflect.Int64 {
+				return nil, coderSint64Slice
+			}
+		case pref.Uint64Kind:
+			if ft.Kind() == reflect.Uint64 {
+				return nil, coderUint64Slice
+			}
+		case pref.Sfixed32Kind:
+			if ft.Kind() == reflect.Int32 {
+				return nil, coderSfixed32Slice
+			}
+		case pref.Fixed32Kind:
+			if ft.Kind() == reflect.Uint32 {
+				return nil, coderFixed32Slice
+			}
+		case pref.FloatKind:
+			if ft.Kind() == reflect.Float32 {
+				return nil, coderFloatSlice
+			}
+		case pref.Sfixed64Kind:
+			if ft.Kind() == reflect.Int64 {
+				return nil, coderSfixed64Slice
+			}
+		case pref.Fixed64Kind:
+			if ft.Kind() == reflect.Uint64 {
+				return nil, coderFixed64Slice
+			}
+		case pref.DoubleKind:
+			if ft.Kind() == reflect.Float64 {
+				return nil, coderDoubleSlice
+			}
+		case pref.StringKind:
+			if ft.Kind() == reflect.String && strs.EnforceUTF8(fd) {
+				return nil, coderStringSliceValidateUTF8
+			}
+			if ft.Kind() == reflect.String {
+				return nil, coderStringSlice
+			}
+			if ft.Kind() == reflect.Slice && ft.Elem().Kind() == reflect.Uint8 && strs.EnforceUTF8(fd) {
+				return nil, coderBytesSliceValidateUTF8
+			}
+			if ft.Kind() == reflect.Slice && ft.Elem().Kind() == reflect.Uint8 {
+				return nil, coderBytesSlice
+			}
+		case pref.BytesKind:
+			if ft.Kind() == reflect.String {
+				return nil, coderStringSlice
+			}
+			if ft.Kind() == reflect.Slice && ft.Elem().Kind() == reflect.Uint8 {
+				return nil, coderBytesSlice
+			}
+		case pref.MessageKind:
+			return getMessageInfo(ft), makeMessageSliceFieldCoder(fd, ft)
+		case pref.GroupKind:
+			return getMessageInfo(ft), makeGroupSliceFieldCoder(fd, ft)
+		}
+	case fd.Cardinality() == pref.Repeated && fd.IsPacked():
+		// Packed repeated fields.
+		//
+		// Only repeated fields of primitive numeric types
+		// (Varint, Fixed32, or Fixed64 wire type) can be packed.
+		if ft.Kind() != reflect.Slice {
+			break
+		}
+		ft := ft.Elem()
+		switch fd.Kind() {
+		case pref.BoolKind:
+			if ft.Kind() == reflect.Bool {
+				return nil, coderBoolPackedSlice
+			}
+		case pref.EnumKind:
+			if ft.Kind() == reflect.Int32 {
+				return nil, coderEnumPackedSlice
+			}
+		case pref.Int32Kind:
+			if ft.Kind() == reflect.Int32 {
+				return nil, coderInt32PackedSlice
+			}
+		case pref.Sint32Kind:
+			if ft.Kind() == reflect.Int32 {
+				return nil, coderSint32PackedSlice
+			}
+		case pref.Uint32Kind:
+			if ft.Kind() == reflect.Uint32 {
+				return nil, coderUint32PackedSlice
+			}
+		case pref.Int64Kind:
+			if ft.Kind() == reflect.Int64 {
+				return nil, coderInt64PackedSlice
+			}
+		case pref.Sint64Kind:
+			if ft.Kind() == reflect.Int64 {
+				return nil, coderSint64PackedSlice
+			}
+		case pref.Uint64Kind:
+			if ft.Kind() == reflect.Uint64 {
+				return nil, coderUint64PackedSlice
+			}
+		case pref.Sfixed32Kind:
+			if ft.Kind() == reflect.Int32 {
+				return nil, coderSfixed32PackedSlice
+			}
+		case pref.Fixed32Kind:
+			if ft.Kind() == reflect.Uint32 {
+				return nil, coderFixed32PackedSlice
+			}
+		case pref.FloatKind:
+			if ft.Kind() == reflect.Float32 {
+				return nil, coderFloatPackedSlice
+			}
+		case pref.Sfixed64Kind:
+			if ft.Kind() == reflect.Int64 {
+				return nil, coderSfixed64PackedSlice
+			}
+		case pref.Fixed64Kind:
+			if ft.Kind() == reflect.Uint64 {
+				return nil, coderFixed64PackedSlice
+			}
+		case pref.DoubleKind:
+			if ft.Kind() == reflect.Float64 {
+				return nil, coderDoublePackedSlice
+			}
+		}
+	case fd.Kind() == pref.MessageKind:
+		return getMessageInfo(ft), makeMessageFieldCoder(fd, ft)
+	case fd.Kind() == pref.GroupKind:
+		return getMessageInfo(ft), makeGroupFieldCoder(fd, ft)
+	case fd.Syntax() == pref.Proto3 && fd.ContainingOneof() == nil:
+		// Populated oneof fields always encode even if set to the zero value,
+		// which normally are not encoded in proto3.
+		switch fd.Kind() {
+		case pref.BoolKind:
+			if ft.Kind() == reflect.Bool {
+				return nil, coderBoolNoZero
+			}
+		case pref.EnumKind:
+			if ft.Kind() == reflect.Int32 {
+				return nil, coderEnumNoZero
+			}
+		case pref.Int32Kind:
+			if ft.Kind() == reflect.Int32 {
+				return nil, coderInt32NoZero
+			}
+		case pref.Sint32Kind:
+			if ft.Kind() == reflect.Int32 {
+				return nil, coderSint32NoZero
+			}
+		case pref.Uint32Kind:
+			if ft.Kind() == reflect.Uint32 {
+				return nil, coderUint32NoZero
+			}
+		case pref.Int64Kind:
+			if ft.Kind() == reflect.Int64 {
+				return nil, coderInt64NoZero
+			}
+		case pref.Sint64Kind:
+			if ft.Kind() == reflect.Int64 {
+				return nil, coderSint64NoZero
+			}
+		case pref.Uint64Kind:
+			if ft.Kind() == reflect.Uint64 {
+				return nil, coderUint64NoZero
+			}
+		case pref.Sfixed32Kind:
+			if ft.Kind() == reflect.Int32 {
+				return nil, coderSfixed32NoZero
+			}
+		case pref.Fixed32Kind:
+			if ft.Kind() == reflect.Uint32 {
+				return nil, coderFixed32NoZero
+			}
+		case pref.FloatKind:
+			if ft.Kind() == reflect.Float32 {
+				return nil, coderFloatNoZero
+			}
+		case pref.Sfixed64Kind:
+			if ft.Kind() == reflect.Int64 {
+				return nil, coderSfixed64NoZero
+			}
+		case pref.Fixed64Kind:
+			if ft.Kind() == reflect.Uint64 {
+				return nil, coderFixed64NoZero
+			}
+		case pref.DoubleKind:
+			if ft.Kind() == reflect.Float64 {
+				return nil, coderDoubleNoZero
+			}
+		case pref.StringKind:
+			if ft.Kind() == reflect.String && strs.EnforceUTF8(fd) {
+				return nil, coderStringNoZeroValidateUTF8
+			}
+			if ft.Kind() == reflect.String {
+				return nil, coderStringNoZero
+			}
+			if ft.Kind() == reflect.Slice && ft.Elem().Kind() == reflect.Uint8 && strs.EnforceUTF8(fd) {
+				return nil, coderBytesNoZeroValidateUTF8
+			}
+			if ft.Kind() == reflect.Slice && ft.Elem().Kind() == reflect.Uint8 {
+				return nil, coderBytesNoZero
+			}
+		case pref.BytesKind:
+			if ft.Kind() == reflect.String {
+				return nil, coderStringNoZero
+			}
+			if ft.Kind() == reflect.Slice && ft.Elem().Kind() == reflect.Uint8 {
+				return nil, coderBytesNoZero
+			}
+		}
+	case ft.Kind() == reflect.Ptr:
+		ft := ft.Elem()
+		switch fd.Kind() {
+		case pref.BoolKind:
+			if ft.Kind() == reflect.Bool {
+				return nil, coderBoolPtr
+			}
+		case pref.EnumKind:
+			if ft.Kind() == reflect.Int32 {
+				return nil, coderEnumPtr
+			}
+		case pref.Int32Kind:
+			if ft.Kind() == reflect.Int32 {
+				return nil, coderInt32Ptr
+			}
+		case pref.Sint32Kind:
+			if ft.Kind() == reflect.Int32 {
+				return nil, coderSint32Ptr
+			}
+		case pref.Uint32Kind:
+			if ft.Kind() == reflect.Uint32 {
+				return nil, coderUint32Ptr
+			}
+		case pref.Int64Kind:
+			if ft.Kind() == reflect.Int64 {
+				return nil, coderInt64Ptr
+			}
+		case pref.Sint64Kind:
+			if ft.Kind() == reflect.Int64 {
+				return nil, coderSint64Ptr
+			}
+		case pref.Uint64Kind:
+			if ft.Kind() == reflect.Uint64 {
+				return nil, coderUint64Ptr
+			}
+		case pref.Sfixed32Kind:
+			if ft.Kind() == reflect.Int32 {
+				return nil, coderSfixed32Ptr
+			}
+		case pref.Fixed32Kind:
+			if ft.Kind() == reflect.Uint32 {
+				return nil, coderFixed32Ptr
+			}
+		case pref.FloatKind:
+			if ft.Kind() == reflect.Float32 {
+				return nil, coderFloatPtr
+			}
+		case pref.Sfixed64Kind:
+			if ft.Kind() == reflect.Int64 {
+				return nil, coderSfixed64Ptr
+			}
+		case pref.Fixed64Kind:
+			if ft.Kind() == reflect.Uint64 {
+				return nil, coderFixed64Ptr
+			}
+		case pref.DoubleKind:
+			if ft.Kind() == reflect.Float64 {
+				return nil, coderDoublePtr
+			}
+		case pref.StringKind:
+			if ft.Kind() == reflect.String && strs.EnforceUTF8(fd) {
+				return nil, coderStringPtrValidateUTF8
+			}
+			if ft.Kind() == reflect.String {
+				return nil, coderStringPtr
+			}
+		case pref.BytesKind:
+			if ft.Kind() == reflect.String {
+				return nil, coderStringPtr
+			}
+		}
+	default:
+		switch fd.Kind() {
+		case pref.BoolKind:
+			if ft.Kind() == reflect.Bool {
+				return nil, coderBool
+			}
+		case pref.EnumKind:
+			if ft.Kind() == reflect.Int32 {
+				return nil, coderEnum
+			}
+		case pref.Int32Kind:
+			if ft.Kind() == reflect.Int32 {
+				return nil, coderInt32
+			}
+		case pref.Sint32Kind:
+			if ft.Kind() == reflect.Int32 {
+				return nil, coderSint32
+			}
+		case pref.Uint32Kind:
+			if ft.Kind() == reflect.Uint32 {
+				return nil, coderUint32
+			}
+		case pref.Int64Kind:
+			if ft.Kind() == reflect.Int64 {
+				return nil, coderInt64
+			}
+		case pref.Sint64Kind:
+			if ft.Kind() == reflect.Int64 {
+				return nil, coderSint64
+			}
+		case pref.Uint64Kind:
+			if ft.Kind() == reflect.Uint64 {
+				return nil, coderUint64
+			}
+		case pref.Sfixed32Kind:
+			if ft.Kind() == reflect.Int32 {
+				return nil, coderSfixed32
+			}
+		case pref.Fixed32Kind:
+			if ft.Kind() == reflect.Uint32 {
+				return nil, coderFixed32
+			}
+		case pref.FloatKind:
+			if ft.Kind() == reflect.Float32 {
+				return nil, coderFloat
+			}
+		case pref.Sfixed64Kind:
+			if ft.Kind() == reflect.Int64 {
+				return nil, coderSfixed64
+			}
+		case pref.Fixed64Kind:
+			if ft.Kind() == reflect.Uint64 {
+				return nil, coderFixed64
+			}
+		case pref.DoubleKind:
+			if ft.Kind() == reflect.Float64 {
+				return nil, coderDouble
+			}
+		case pref.StringKind:
+			if ft.Kind() == reflect.String && strs.EnforceUTF8(fd) {
+				return nil, coderStringValidateUTF8
+			}
+			if ft.Kind() == reflect.String {
+				return nil, coderString
+			}
+			if ft.Kind() == reflect.Slice && ft.Elem().Kind() == reflect.Uint8 && strs.EnforceUTF8(fd) {
+				return nil, coderBytesValidateUTF8
+			}
+			if ft.Kind() == reflect.Slice && ft.Elem().Kind() == reflect.Uint8 {
+				return nil, coderBytes
+			}
+		case pref.BytesKind:
+			if ft.Kind() == reflect.String {
+				return nil, coderString
+			}
+			if ft.Kind() == reflect.Slice && ft.Elem().Kind() == reflect.Uint8 {
+				return nil, coderBytes
+			}
+		}
+	}
+	panic(fmt.Sprintf("invalid type: no encoder for %v %v %v/%v", fd.FullName(), fd.Cardinality(), fd.Kind(), ft))
+}
+
+// encoderFuncsForValue returns value functions for a field, used for
+// extension values and map encoding.
+func encoderFuncsForValue(fd pref.FieldDescriptor) valueCoderFuncs {
+	switch {
+	case fd.Cardinality() == pref.Repeated && !fd.IsPacked():
+		switch fd.Kind() {
+		case pref.BoolKind:
+			return coderBoolSliceValue
+		case pref.EnumKind:
+			return coderEnumSliceValue
+		case pref.Int32Kind:
+			return coderInt32SliceValue
+		case pref.Sint32Kind:
+			return coderSint32SliceValue
+		case pref.Uint32Kind:
+			return coderUint32SliceValue
+		case pref.Int64Kind:
+			return coderInt64SliceValue
+		case pref.Sint64Kind:
+			return coderSint64SliceValue
+		case pref.Uint64Kind:
+			return coderUint64SliceValue
+		case pref.Sfixed32Kind:
+			return coderSfixed32SliceValue
+		case pref.Fixed32Kind:
+			return coderFixed32SliceValue
+		case pref.FloatKind:
+			return coderFloatSliceValue
+		case pref.Sfixed64Kind:
+			return coderSfixed64SliceValue
+		case pref.Fixed64Kind:
+			return coderFixed64SliceValue
+		case pref.DoubleKind:
+			return coderDoubleSliceValue
+		case pref.StringKind:
+			// We don't have a UTF-8 validating coder for repeated string fields.
+			// Value coders are used for extensions and maps.
+			// Extensions are never proto3, and maps never contain lists.
+			return coderStringSliceValue
+		case pref.BytesKind:
+			return coderBytesSliceValue
+		case pref.MessageKind:
+			return coderMessageSliceValue
+		case pref.GroupKind:
+			return coderGroupSliceValue
+		}
+	case fd.Cardinality() == pref.Repeated && fd.IsPacked():
+		switch fd.Kind() {
+		case pref.BoolKind:
+			return coderBoolPackedSliceValue
+		case pref.EnumKind:
+			return coderEnumPackedSliceValue
+		case pref.Int32Kind:
+			return coderInt32PackedSliceValue
+		case pref.Sint32Kind:
+			return coderSint32PackedSliceValue
+		case pref.Uint32Kind:
+			return coderUint32PackedSliceValue
+		case pref.Int64Kind:
+			return coderInt64PackedSliceValue
+		case pref.Sint64Kind:
+			return coderSint64PackedSliceValue
+		case pref.Uint64Kind:
+			return coderUint64PackedSliceValue
+		case pref.Sfixed32Kind:
+			return coderSfixed32PackedSliceValue
+		case pref.Fixed32Kind:
+			return coderFixed32PackedSliceValue
+		case pref.FloatKind:
+			return coderFloatPackedSliceValue
+		case pref.Sfixed64Kind:
+			return coderSfixed64PackedSliceValue
+		case pref.Fixed64Kind:
+			return coderFixed64PackedSliceValue
+		case pref.DoubleKind:
+			return coderDoublePackedSliceValue
+		}
+	default:
+		switch fd.Kind() {
+		default:
+		case pref.BoolKind:
+			return coderBoolValue
+		case pref.EnumKind:
+			return coderEnumValue
+		case pref.Int32Kind:
+			return coderInt32Value
+		case pref.Sint32Kind:
+			return coderSint32Value
+		case pref.Uint32Kind:
+			return coderUint32Value
+		case pref.Int64Kind:
+			return coderInt64Value
+		case pref.Sint64Kind:
+			return coderSint64Value
+		case pref.Uint64Kind:
+			return coderUint64Value
+		case pref.Sfixed32Kind:
+			return coderSfixed32Value
+		case pref.Fixed32Kind:
+			return coderFixed32Value
+		case pref.FloatKind:
+			return coderFloatValue
+		case pref.Sfixed64Kind:
+			return coderSfixed64Value
+		case pref.Fixed64Kind:
+			return coderFixed64Value
+		case pref.DoubleKind:
+			return coderDoubleValue
+		case pref.StringKind:
+			if strs.EnforceUTF8(fd) {
+				return coderStringValueValidateUTF8
+			}
+			return coderStringValue
+		case pref.BytesKind:
+			return coderBytesValue
+		case pref.MessageKind:
+			return coderMessageValue
+		case pref.GroupKind:
+			return coderGroupValue
+		}
+	}
+	panic(fmt.Sprintf("invalid field: no encoder for %v %v %v", fd.FullName(), fd.Cardinality(), fd.Kind()))
+}

vendor/google.golang.org/protobuf/internal/impl/codec_unsafe.go

@@ -0,0 +1,17 @@
+// Copyright 2019 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build !purego,!appengine
+
+package impl
+
+// When using unsafe pointers, we can just treat enum values as int32s.
+
+var (
+	coderEnumNoZero      = coderInt32NoZero
+	coderEnum            = coderInt32
+	coderEnumPtr         = coderInt32Ptr
+	coderEnumSlice       = coderInt32Slice
+	coderEnumPackedSlice = coderInt32PackedSlice
+)

vendor/google.golang.org/protobuf/internal/impl/convert.go

@@ -0,0 +1,467 @@
+// Copyright 2018 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package impl
+
+import (
+	"fmt"
+	"reflect"
+
+	pref "google.golang.org/protobuf/reflect/protoreflect"
+)
+
+// unwrapper unwraps the value to the underlying value.
+// This is implemented by List and Map.
+type unwrapper interface {
+	protoUnwrap() interface{}
+}
+
+// A Converter coverts to/from Go reflect.Value types and protobuf protoreflect.Value types.
+type Converter interface {
+	// PBValueOf converts a reflect.Value to a protoreflect.Value.
+	PBValueOf(reflect.Value) pref.Value
+
+	// GoValueOf converts a protoreflect.Value to a reflect.Value.
+	GoValueOf(pref.Value) reflect.Value
+
+	// IsValidPB returns whether a protoreflect.Value is compatible with this type.
+	IsValidPB(pref.Value) bool
+
+	// IsValidGo returns whether a reflect.Value is compatible with this type.
+	IsValidGo(reflect.Value) bool
+
+	// New returns a new field value.
+	// For scalars, it returns the default value of the field.
+	// For composite types, it returns a new mutable value.
+	New() pref.Value
+
+	// Zero returns a new field value.
+	// For scalars, it returns the default value of the field.
+	// For composite types, it returns an immutable, empty value.
+	Zero() pref.Value
+}
+
+// NewConverter matches a Go type with a protobuf field and returns a Converter
+// that converts between the two. Enums must be a named int32 kind that
+// implements protoreflect.Enum, and messages must be pointer to a named
+// struct type that implements protoreflect.ProtoMessage.
+//
+// This matcher deliberately supports a wider range of Go types than what
+// protoc-gen-go historically generated to be able to automatically wrap some
+// v1 messages generated by other forks of protoc-gen-go.
+func NewConverter(t reflect.Type, fd pref.FieldDescriptor) Converter {
+	switch {
+	case fd.IsList():
+		return newListConverter(t, fd)
+	case fd.IsMap():
+		return newMapConverter(t, fd)
+	default:
+		return newSingularConverter(t, fd)
+	}
+	panic(fmt.Sprintf("invalid Go type %v for field %v", t, fd.FullName()))
+}
+
+var (
+	boolType    = reflect.TypeOf(bool(false))
+	int32Type   = reflect.TypeOf(int32(0))
+	int64Type   = reflect.TypeOf(int64(0))
+	uint32Type  = reflect.TypeOf(uint32(0))
+	uint64Type  = reflect.TypeOf(uint64(0))
+	float32Type = reflect.TypeOf(float32(0))
+	float64Type = reflect.TypeOf(float64(0))
+	stringType  = reflect.TypeOf(string(""))
+	bytesType   = reflect.TypeOf([]byte(nil))
+	byteType    = reflect.TypeOf(byte(0))
+)
+
+var (
+	boolZero    = pref.ValueOfBool(false)
+	int32Zero   = pref.ValueOfInt32(0)
+	int64Zero   = pref.ValueOfInt64(0)
+	uint32Zero  = pref.ValueOfUint32(0)
+	uint64Zero  = pref.ValueOfUint64(0)
+	float32Zero = pref.ValueOfFloat32(0)
+	float64Zero = pref.ValueOfFloat64(0)
+	stringZero  = pref.ValueOfString("")
+	bytesZero   = pref.ValueOfBytes(nil)
+)
+
+func newSingularConverter(t reflect.Type, fd pref.FieldDescriptor) Converter {
+	defVal := func(fd pref.FieldDescriptor, zero pref.Value) pref.Value {
+		if fd.Cardinality() == pref.Repeated {
+			// Default isn't defined for repeated fields.
+			return zero
+		}
+		return fd.Default()
+	}
+	switch fd.Kind() {
+	case pref.BoolKind:
+		if t.Kind() == reflect.Bool {
+			return &boolConverter{t, defVal(fd, boolZero)}
+		}
+	case pref.Int32Kind, pref.Sint32Kind, pref.Sfixed32Kind:
+		if t.Kind() == reflect.Int32 {
+			return &int32Converter{t, defVal(fd, int32Zero)}
+		}
+	case pref.Int64Kind, pref.Sint64Kind, pref.Sfixed64Kind:
+		if t.Kind() == reflect.Int64 {
+			return &int64Converter{t, defVal(fd, int64Zero)}
+		}
+	case pref.Uint32Kind, pref.Fixed32Kind:
+		if t.Kind() == reflect.Uint32 {
+			return &uint32Converter{t, defVal(fd, uint32Zero)}
+		}
+	case pref.Uint64Kind, pref.Fixed64Kind:
+		if t.Kind() == reflect.Uint64 {
+			return &uint64Converter{t, defVal(fd, uint64Zero)}
+		}
+	case pref.FloatKind:
+		if t.Kind() == reflect.Float32 {
+			return &float32Converter{t, defVal(fd, float32Zero)}
+		}
+	case pref.DoubleKind:
+		if t.Kind() == reflect.Float64 {
+			return &float64Converter{t, defVal(fd, float64Zero)}
+		}
+	case pref.StringKind:
+		if t.Kind() == reflect.String || (t.Kind() == reflect.Slice && t.Elem() == byteType) {
+			return &stringConverter{t, defVal(fd, stringZero)}
+		}
+	case pref.BytesKind:
+		if t.Kind() == reflect.String || (t.Kind() == reflect.Slice && t.Elem() == byteType) {
+			return &bytesConverter{t, defVal(fd, bytesZero)}
+		}
+	case pref.EnumKind:
+		// Handle enums, which must be a named int32 type.
+		if t.Kind() == reflect.Int32 {
+			return newEnumConverter(t, fd)
+		}
+	case pref.MessageKind, pref.GroupKind:
+		return newMessageConverter(t)
+	}
+	panic(fmt.Sprintf("invalid Go type %v for field %v", t, fd.FullName()))
+}
+
+type boolConverter struct {
+	goType reflect.Type
+	def    pref.Value
+}
+
+func (c *boolConverter) PBValueOf(v reflect.Value) pref.Value {
+	if v.Type() != c.goType {
+		panic(fmt.Sprintf("invalid type: got %v, want %v", v.Type(), c.goType))
+	}
+	return pref.ValueOfBool(v.Bool())
+}
+func (c *boolConverter) GoValueOf(v pref.Value) reflect.Value {
+	return reflect.ValueOf(v.Bool()).Convert(c.goType)
+}
+func (c *boolConverter) IsValidPB(v pref.Value) bool {
+	_, ok := v.Interface().(bool)
+	return ok
+}
+func (c *boolConverter) IsValidGo(v reflect.Value) bool {
+	return v.IsValid() && v.Type() == c.goType
+}
+func (c *boolConverter) New() pref.Value  { return c.def }
+func (c *boolConverter) Zero() pref.Value { return c.def }
+
+type int32Converter struct {
+	goType reflect.Type
+	def    pref.Value
+}
+
+func (c *int32Converter) PBValueOf(v reflect.Value) pref.Value {
+	if v.Type() != c.goType {
+		panic(fmt.Sprintf("invalid type: got %v, want %v", v.Type(), c.goType))
+	}
+	return pref.ValueOfInt32(int32(v.Int()))
+}
+func (c *int32Converter) GoValueOf(v pref.Value) reflect.Value {
+	return reflect.ValueOf(int32(v.Int())).Convert(c.goType)
+}
+func (c *int32Converter) IsValidPB(v pref.Value) bool {
+	_, ok := v.Interface().(int32)
+	return ok
+}
+func (c *int32Converter) IsValidGo(v reflect.Value) bool {
+	return v.IsValid() && v.Type() == c.goType
+}
+func (c *int32Converter) New() pref.Value  { return c.def }
+func (c *int32Converter) Zero() pref.Value { return c.def }
+
+type int64Converter struct {
+	goType reflect.Type
+	def    pref.Value
+}
+
+func (c *int64Converter) PBValueOf(v reflect.Value) pref.Value {
+	if v.Type() != c.goType {
+		panic(fmt.Sprintf("invalid type: got %v, want %v", v.Type(), c.goType))
+	}
+	return pref.ValueOfInt64(int64(v.Int()))
+}
+func (c *int64Converter) GoValueOf(v pref.Value) reflect.Value {
+	return reflect.ValueOf(int64(v.Int())).Convert(c.goType)
+}
+func (c *int64Converter) IsValidPB(v pref.Value) bool {
+	_, ok := v.Interface().(int64)
+	return ok
+}
+func (c *int64Converter) IsValidGo(v reflect.Value) bool {
+	return v.IsValid() && v.Type() == c.goType
+}
+func (c *int64Converter) New() pref.Value  { return c.def }
+func (c *int64Converter) Zero() pref.Value { return c.def }
+
+type uint32Converter struct {
+	goType reflect.Type
+	def    pref.Value
+}
+
+func (c *uint32Converter) PBValueOf(v reflect.Value) pref.Value {
+	if v.Type() != c.goType {
+		panic(fmt.Sprintf("invalid type: got %v, want %v", v.Type(), c.goType))
+	}
+	return pref.ValueOfUint32(uint32(v.Uint()))
+}
+func (c *uint32Converter) GoValueOf(v pref.Value) reflect.Value {
+	return reflect.ValueOf(uint32(v.Uint())).Convert(c.goType)
+}
+func (c *uint32Converter) IsValidPB(v pref.Value) bool {
+	_, ok := v.Interface().(uint32)
+	return ok
+}
+func (c *uint32Converter) IsValidGo(v reflect.Value) bool {
+	return v.IsValid() && v.Type() == c.goType
+}
+func (c *uint32Converter) New() pref.Value  { return c.def }
+func (c *uint32Converter) Zero() pref.Value { return c.def }
+
+type uint64Converter struct {
+	goType reflect.Type
+	def    pref.Value
+}
+
+func (c *uint64Converter) PBValueOf(v reflect.Value) pref.Value {
+	if v.Type() != c.goType {
+		panic(fmt.Sprintf("invalid type: got %v, want %v", v.Type(), c.goType))
+	}
+	return pref.ValueOfUint64(uint64(v.Uint()))
+}
+func (c *uint64Converter) GoValueOf(v pref.Value) reflect.Value {
+	return reflect.ValueOf(uint64(v.Uint())).Convert(c.goType)
+}
+func (c *uint64Converter) IsValidPB(v pref.Value) bool {
+	_, ok := v.Interface().(uint64)
+	return ok
+}
+func (c *uint64Converter) IsValidGo(v reflect.Value) bool {
+	return v.IsValid() && v.Type() == c.goType
+}
+func (c *uint64Converter) New() pref.Value  { return c.def }
+func (c *uint64Converter) Zero() pref.Value { return c.def }
+
+type float32Converter struct {
+	goType reflect.Type
+	def    pref.Value
+}
+
+func (c *float32Converter) PBValueOf(v reflect.Value) pref.Value {
+	if v.Type() != c.goType {
+		panic(fmt.Sprintf("invalid type: got %v, want %v", v.Type(), c.goType))
+	}
+	return pref.ValueOfFloat32(float32(v.Float()))
+}
+func (c *float32Converter) GoValueOf(v pref.Value) reflect.Value {
+	return reflect.ValueOf(float32(v.Float())).Convert(c.goType)
+}
+func (c *float32Converter) IsValidPB(v pref.Value) bool {
+	_, ok := v.Interface().(float32)
+	return ok
+}
+func (c *float32Converter) IsValidGo(v reflect.Value) bool {
+	return v.IsValid() && v.Type() == c.goType
+}
+func (c *float32Converter) New() pref.Value  { return c.def }
+func (c *float32Converter) Zero() pref.Value { return c.def }
+
+type float64Converter struct {
+	goType reflect.Type
+	def    pref.Value
+}
+
+func (c *float64Converter) PBValueOf(v reflect.Value) pref.Value {
+	if v.Type() != c.goType {
+		panic(fmt.Sprintf("invalid type: got %v, want %v", v.Type(), c.goType))
+	}
+	return pref.ValueOfFloat64(float64(v.Float()))
+}
+func (c *float64Converter) GoValueOf(v pref.Value) reflect.Value {
+	return reflect.ValueOf(float64(v.Float())).Convert(c.goType)
+}
+func (c *float64Converter) IsValidPB(v pref.Value) bool {
+	_, ok := v.Interface().(float64)
+	return ok
+}
+func (c *float64Converter) IsValidGo(v reflect.Value) bool {
+	return v.IsValid() && v.Type() == c.goType
+}
+func (c *float64Converter) New() pref.Value  { return c.def }
+func (c *float64Converter) Zero() pref.Value { return c.def }
+
+type stringConverter struct {
+	goType reflect.Type
+	def    pref.Value
+}
+
+func (c *stringConverter) PBValueOf(v reflect.Value) pref.Value {
+	if v.Type() != c.goType {
+		panic(fmt.Sprintf("invalid type: got %v, want %v", v.Type(), c.goType))
+	}
+	return pref.ValueOfString(v.Convert(stringType).String())
+}
+func (c *stringConverter) GoValueOf(v pref.Value) reflect.Value {
+	// pref.Value.String never panics, so we go through an interface
+	// conversion here to check the type.
+	s := v.Interface().(string)
+	if c.goType.Kind() == reflect.Slice && s == "" {
+		return reflect.Zero(c.goType) // ensure empty string is []byte(nil)
+	}
+	return reflect.ValueOf(s).Convert(c.goType)
+}
+func (c *stringConverter) IsValidPB(v pref.Value) bool {
+	_, ok := v.Interface().(string)
+	return ok
+}
+func (c *stringConverter) IsValidGo(v reflect.Value) bool {
+	return v.IsValid() && v.Type() == c.goType
+}
+func (c *stringConverter) New() pref.Value  { return c.def }
+func (c *stringConverter) Zero() pref.Value { return c.def }
+
+type bytesConverter struct {
+	goType reflect.Type
+	def    pref.Value
+}
+
+func (c *bytesConverter) PBValueOf(v reflect.Value) pref.Value {
+	if v.Type() != c.goType {
+		panic(fmt.Sprintf("invalid type: got %v, want %v", v.Type(), c.goType))
+	}
+	if c.goType.Kind() == reflect.String && v.Len() == 0 {
+		return pref.ValueOfBytes(nil) // ensure empty string is []byte(nil)
+	}
+	return pref.ValueOfBytes(v.Convert(bytesType).Bytes())
+}
+func (c *bytesConverter) GoValueOf(v pref.Value) reflect.Value {
+	return reflect.ValueOf(v.Bytes()).Convert(c.goType)
+}
+func (c *bytesConverter) IsValidPB(v pref.Value) bool {
+	_, ok := v.Interface().([]byte)
+	return ok
+}
+func (c *bytesConverter) IsValidGo(v reflect.Value) bool {
+	return v.IsValid() && v.Type() == c.goType
+}
+func (c *bytesConverter) New() pref.Value  { return c.def }
+func (c *bytesConverter) Zero() pref.Value { return c.def }
+
+type enumConverter struct {
+	goType reflect.Type
+	def    pref.Value
+}
+
+func newEnumConverter(goType reflect.Type, fd pref.FieldDescriptor) Converter {
+	var def pref.Value
+	if fd.Cardinality() == pref.Repeated {
+		def = pref.ValueOfEnum(fd.Enum().Values().Get(0).Number())
+	} else {
+		def = fd.Default()
+	}
+	return &enumConverter{goType, def}
+}
+
+func (c *enumConverter) PBValueOf(v reflect.Value) pref.Value {
+	if v.Type() != c.goType {
+		panic(fmt.Sprintf("invalid type: got %v, want %v", v.Type(), c.goType))
+	}
+	return pref.ValueOfEnum(pref.EnumNumber(v.Int()))
+}
+
+func (c *enumConverter) GoValueOf(v pref.Value) reflect.Value {
+	return reflect.ValueOf(v.Enum()).Convert(c.goType)
+}
+
+func (c *enumConverter) IsValidPB(v pref.Value) bool {
+	_, ok := v.Interface().(pref.EnumNumber)
+	return ok
+}
+
+func (c *enumConverter) IsValidGo(v reflect.Value) bool {
+	return v.IsValid() && v.Type() == c.goType
+}
+
+func (c *enumConverter) New() pref.Value {
+	return c.def
+}
+
+func (c *enumConverter) Zero() pref.Value {
+	return c.def
+}
+
+type messageConverter struct {
+	goType reflect.Type
+}
+
+func newMessageConverter(goType reflect.Type) Converter {
+	return &messageConverter{goType}
+}
+
+func (c *messageConverter) PBValueOf(v reflect.Value) pref.Value {
+	if v.Type() != c.goType {
+		panic(fmt.Sprintf("invalid type: got %v, want %v", v.Type(), c.goType))
+	}
+	if m, ok := v.Interface().(pref.ProtoMessage); ok {
+		return pref.ValueOfMessage(m.ProtoReflect())
+	}
+	return pref.ValueOfMessage(legacyWrapMessage(v))
+}
+
+func (c *messageConverter) GoValueOf(v pref.Value) reflect.Value {
+	m := v.Message()
+	var rv reflect.Value
+	if u, ok := m.(unwrapper); ok {
+		rv = reflect.ValueOf(u.protoUnwrap())
+	} else {
+		rv = reflect.ValueOf(m.Interface())
+	}
+	if rv.Type() != c.goType {
+		panic(fmt.Sprintf("invalid type: got %v, want %v", rv.Type(), c.goType))
+	}
+	return rv
+}
+
+func (c *messageConverter) IsValidPB(v pref.Value) bool {
+	m := v.Message()
+	var rv reflect.Value
+	if u, ok := m.(unwrapper); ok {
+		rv = reflect.ValueOf(u.protoUnwrap())
+	} else {
+		rv = reflect.ValueOf(m.Interface())
+	}
+	return rv.Type() == c.goType
+}
+
+func (c *messageConverter) IsValidGo(v reflect.Value) bool {
+	return v.IsValid() && v.Type() == c.goType
+}
+
+func (c *messageConverter) New() pref.Value {
+	return c.PBValueOf(reflect.New(c.goType.Elem()))
+}
+
+func (c *messageConverter) Zero() pref.Value {
+	return c.PBValueOf(reflect.Zero(c.goType))
+}

vendor/google.golang.org/protobuf/internal/impl/convert_list.go

@@ -0,0 +1,141 @@
+// Copyright 2018 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package impl
+
+import (
+	"fmt"
+	"reflect"
+
+	pref "google.golang.org/protobuf/reflect/protoreflect"
+)
+
+func newListConverter(t reflect.Type, fd pref.FieldDescriptor) Converter {
+	switch {
+	case t.Kind() == reflect.Ptr && t.Elem().Kind() == reflect.Slice:
+		return &listPtrConverter{t, newSingularConverter(t.Elem().Elem(), fd)}
+	case t.Kind() == reflect.Slice:
+		return &listConverter{t, newSingularConverter(t.Elem(), fd)}
+	}
+	panic(fmt.Sprintf("invalid Go type %v for field %v", t, fd.FullName()))
+}
+
+type listConverter struct {
+	goType reflect.Type // []T
+	c      Converter
+}
+
+func (c *listConverter) PBValueOf(v reflect.Value) pref.Value {
+	if v.Type() != c.goType {
+		panic(fmt.Sprintf("invalid type: got %v, want %v", v.Type(), c.goType))
+	}
+	pv := reflect.New(c.goType)
+	pv.Elem().Set(v)
+	return pref.ValueOfList(&listReflect{pv, c.c})
+}
+
+func (c *listConverter) GoValueOf(v pref.Value) reflect.Value {
+	rv := v.List().(*listReflect).v
+	if rv.IsNil() {
+		return reflect.Zero(c.goType)
+	}
+	return rv.Elem()
+}
+
+func (c *listConverter) IsValidPB(v pref.Value) bool {
+	list, ok := v.Interface().(*listReflect)
+	if !ok {
+		return false
+	}
+	return list.v.Type().Elem() == c.goType
+}
+
+func (c *listConverter) IsValidGo(v reflect.Value) bool {
+	return v.IsValid() && v.Type() == c.goType
+}
+
+func (c *listConverter) New() pref.Value {
+	return pref.ValueOfList(&listReflect{reflect.New(c.goType), c.c})
+}
+
+func (c *listConverter) Zero() pref.Value {
+	return pref.ValueOfList(&listReflect{reflect.Zero(reflect.PtrTo(c.goType)), c.c})
+}
+
+type listPtrConverter struct {
+	goType reflect.Type // *[]T
+	c      Converter
+}
+
+func (c *listPtrConverter) PBValueOf(v reflect.Value) pref.Value {
+	if v.Type() != c.goType {
+		panic(fmt.Sprintf("invalid type: got %v, want %v", v.Type(), c.goType))
+	}
+	return pref.ValueOfList(&listReflect{v, c.c})
+}
+
+func (c *listPtrConverter) GoValueOf(v pref.Value) reflect.Value {
+	return v.List().(*listReflect).v
+}
+
+func (c *listPtrConverter) IsValidPB(v pref.Value) bool {
+	list, ok := v.Interface().(*listReflect)
+	if !ok {
+		return false
+	}
+	return list.v.Type() == c.goType
+}
+
+func (c *listPtrConverter) IsValidGo(v reflect.Value) bool {
+	return v.IsValid() && v.Type() == c.goType
+}
+
+func (c *listPtrConverter) New() pref.Value {
+	return c.PBValueOf(reflect.New(c.goType.Elem()))
+}
+
+func (c *listPtrConverter) Zero() pref.Value {
+	return c.PBValueOf(reflect.Zero(c.goType))
+}
+
+type listReflect struct {
+	v    reflect.Value // *[]T
+	conv Converter
+}
+
+func (ls *listReflect) Len() int {
+	if ls.v.IsNil() {
+		return 0
+	}
+	return ls.v.Elem().Len()
+}
+func (ls *listReflect) Get(i int) pref.Value {
+	return ls.conv.PBValueOf(ls.v.Elem().Index(i))
+}
+func (ls *listReflect) Set(i int, v pref.Value) {
+	ls.v.Elem().Index(i).Set(ls.conv.GoValueOf(v))
+}
+func (ls *listReflect) Append(v pref.Value) {
+	ls.v.Elem().Set(reflect.Append(ls.v.Elem(), ls.conv.GoValueOf(v)))
+}
+func (ls *listReflect) AppendMutable() pref.Value {
+	if _, ok := ls.conv.(*messageConverter); !ok {
+		panic("invalid AppendMutable on list with non-message type")
+	}
+	v := ls.NewElement()
+	ls.Append(v)
+	return v
+}
+func (ls *listReflect) Truncate(i int) {
+	ls.v.Elem().Set(ls.v.Elem().Slice(0, i))
+}
+func (ls *listReflect) NewElement() pref.Value {
+	return ls.conv.New()
+}
+func (ls *listReflect) IsValid() bool {
+	return !ls.v.IsNil()
+}
+func (ls *listReflect) protoUnwrap() interface{} {
+	return ls.v.Interface()
+}