75 lines
1.9 KiB
Go
75 lines
1.9 KiB
Go
|
// 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"
|
||
|
|
|
||
|
|
pref "google.golang.org/protobuf/reflect/protoreflect"
|
||
|
|
"google.golang.org/protobuf/reflect/protoregistry"
|
||
|
|
)
|
||
|
|
|
||
|
|
// weakFields adds methods to the exported WeakFields type for internal use.
|
||
|
|
//
|
||
|
|
// The exported type is an alias to an unnamed type, so methods can't be
|
||
|
|
// defined directly on it.
|
||
|
|
type weakFields WeakFields
|
||
|
|
|
||
|
|
func (w weakFields) get(num pref.FieldNumber) (pref.ProtoMessage, bool) {
|
||
|
|
m, ok := w[int32(num)]
|
||
|
|
return m, ok
|
||
|
|
}
|
||
|
|
|
||
|
|
func (w *weakFields) set(num pref.FieldNumber, m pref.ProtoMessage) {
|
||
|
|
if *w == nil {
|
||
|
|
*w = make(weakFields)
|
||
|
|
}
|
||
|
|
(*w)[int32(num)] = m
|
||
|
|
}
|
||
|
|
|
||
|
|
func (w *weakFields) clear(num pref.FieldNumber) {
|
||
|
|
delete(*w, int32(num))
|
||
|
|
}
|
||
|
|
|
||
|
|
func (Export) HasWeak(w WeakFields, num pref.FieldNumber) bool {
|
||
|
|
_, ok := w[int32(num)]
|
||
|
|
return ok
|
||
|
|
}
|
||
|
|
|
||
|
|
func (Export) ClearWeak(w *WeakFields, num pref.FieldNumber) {
|
||
|
|
delete(*w, int32(num))
|
||
|
|
}
|
||
|
|
|
||
|
|
func (Export) GetWeak(w WeakFields, num pref.FieldNumber, name pref.FullName) pref.ProtoMessage {
|
||
|
|
if m, ok := w[int32(num)]; ok {
|
||
|
|
return m
|
||
|
|
}
|
||
|
|
mt, _ := protoregistry.GlobalTypes.FindMessageByName(name)
|
||
|
|
if mt == nil {
|
||
|
|
panic(fmt.Sprintf("message %v for weak field is not linked in", name))
|
||
|
|
}
|
||
|
|
return mt.Zero().Interface()
|
||
|
|
}
|
||
|
|
|
||
|
|
func (Export) SetWeak(w *WeakFields, num pref.FieldNumber, name pref.FullName, m pref.ProtoMessage) {
|
||
|
|
if m != nil {
|
||
|
|
mt, _ := protoregistry.GlobalTypes.FindMessageByName(name)
|
||
|
|
if mt == nil {
|
||
|
|
panic(fmt.Sprintf("message %v for weak field is not linked in", name))
|
||
|
|
}
|
||
|
|
if mt != m.ProtoReflect().Type() {
|
||
|
|
panic(fmt.Sprintf("invalid message type for weak field: got %T, want %T", m, mt.Zero().Interface()))
|
||
|
|
}
|
||
|
|
}
|
||
|
|
if m == nil || !m.ProtoReflect().IsValid() {
|
||
|
|
delete(*w, int32(num))
|
||
|
|
return
|
||
|
|
}
|
||
|
|
if *w == nil {
|
||
|
|
*w = make(weakFields)
|
||
|
|
}
|
||
|
|
(*w)[int32(num)] = m
|
||
|
|
}
|