Fix drive mode parsing
This commit is contained in:
		
							
								
								
									
										56
									
								
								vendor/golang.org/x/net/context/context.go
									
									
									
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// Copyright 2014 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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		||||
// license that can be found in the LICENSE file.
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// Package context defines the Context type, which carries deadlines,
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// cancelation signals, and other request-scoped values across API boundaries
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// and between processes.
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// As of Go 1.7 this package is available in the standard library under the
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// name context.  https://golang.org/pkg/context.
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//
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// Incoming requests to a server should create a Context, and outgoing calls to
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// servers should accept a Context. The chain of function calls between must
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// propagate the Context, optionally replacing it with a modified copy created
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// using WithDeadline, WithTimeout, WithCancel, or WithValue.
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//
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// Programs that use Contexts should follow these rules to keep interfaces
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// consistent across packages and enable static analysis tools to check context
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// propagation:
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//
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// Do not store Contexts inside a struct type; instead, pass a Context
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// explicitly to each function that needs it. The Context should be the first
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// parameter, typically named ctx:
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//
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// 	func DoSomething(ctx context.Context, arg Arg) error {
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// 		// ... use ctx ...
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// 	}
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//
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// Do not pass a nil Context, even if a function permits it. Pass context.TODO
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// if you are unsure about which Context to use.
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//
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// Use context Values only for request-scoped data that transits processes and
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// APIs, not for passing optional parameters to functions.
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//
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// The same Context may be passed to functions running in different goroutines;
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// Contexts are safe for simultaneous use by multiple goroutines.
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//
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// See http://blog.golang.org/context for example code for a server that uses
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// Contexts.
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package context // import "golang.org/x/net/context"
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// Background returns a non-nil, empty Context. It is never canceled, has no
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// values, and has no deadline. It is typically used by the main function,
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// initialization, and tests, and as the top-level Context for incoming
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// requests.
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func Background() Context {
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	return background
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}
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// TODO returns a non-nil, empty Context. Code should use context.TODO when
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// it's unclear which Context to use or it is not yet available (because the
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// surrounding function has not yet been extended to accept a Context
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// parameter).  TODO is recognized by static analysis tools that determine
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// whether Contexts are propagated correctly in a program.
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func TODO() Context {
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	return todo
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}
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										72
									
								
								vendor/golang.org/x/net/context/go17.go
									
									
									
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							@@ -1,72 +0,0 @@
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// Copyright 2016 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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// +build go1.7
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package context
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import (
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	"context" // standard library's context, as of Go 1.7
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	"time"
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)
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var (
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	todo       = context.TODO()
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	background = context.Background()
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)
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// Canceled is the error returned by Context.Err when the context is canceled.
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		||||
var Canceled = context.Canceled
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		||||
// DeadlineExceeded is the error returned by Context.Err when the context's
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// deadline passes.
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var DeadlineExceeded = context.DeadlineExceeded
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// WithCancel returns a copy of parent with a new Done channel. The returned
 | 
			
		||||
// context's Done channel is closed when the returned cancel function is called
 | 
			
		||||
// or when the parent context's Done channel is closed, whichever happens first.
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		||||
//
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		||||
// Canceling this context releases resources associated with it, so code should
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		||||
// call cancel as soon as the operations running in this Context complete.
 | 
			
		||||
func WithCancel(parent Context) (ctx Context, cancel CancelFunc) {
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	ctx, f := context.WithCancel(parent)
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	return ctx, CancelFunc(f)
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		||||
}
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		||||
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		||||
// WithDeadline returns a copy of the parent context with the deadline adjusted
 | 
			
		||||
// to be no later than d. If the parent's deadline is already earlier than d,
 | 
			
		||||
// WithDeadline(parent, d) is semantically equivalent to parent. The returned
 | 
			
		||||
// context's Done channel is closed when the deadline expires, when the returned
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		||||
// cancel function is called, or when the parent context's Done channel is
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// closed, whichever happens first.
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//
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// Canceling this context releases resources associated with it, so code should
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// call cancel as soon as the operations running in this Context complete.
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func WithDeadline(parent Context, deadline time.Time) (Context, CancelFunc) {
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	ctx, f := context.WithDeadline(parent, deadline)
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	return ctx, CancelFunc(f)
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}
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// WithTimeout returns WithDeadline(parent, time.Now().Add(timeout)).
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//
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// Canceling this context releases resources associated with it, so code should
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// call cancel as soon as the operations running in this Context complete:
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//
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// 	func slowOperationWithTimeout(ctx context.Context) (Result, error) {
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// 		ctx, cancel := context.WithTimeout(ctx, 100*time.Millisecond)
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// 		defer cancel()  // releases resources if slowOperation completes before timeout elapses
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// 		return slowOperation(ctx)
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// 	}
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func WithTimeout(parent Context, timeout time.Duration) (Context, CancelFunc) {
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	return WithDeadline(parent, time.Now().Add(timeout))
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}
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// WithValue returns a copy of parent in which the value associated with key is
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// val.
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//
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// Use context Values only for request-scoped data that transits processes and
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// APIs, not for passing optional parameters to functions.
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func WithValue(parent Context, key interface{}, val interface{}) Context {
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	return context.WithValue(parent, key, val)
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}
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							@@ -1,20 +0,0 @@
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// Copyright 2017 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
 | 
			
		||||
// license that can be found in the LICENSE file.
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// +build go1.9
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package context
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import "context" // standard library's context, as of Go 1.7
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// A Context carries a deadline, a cancelation signal, and other values across
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// API boundaries.
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//
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// Context's methods may be called by multiple goroutines simultaneously.
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type Context = context.Context
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// A CancelFunc tells an operation to abandon its work.
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// A CancelFunc does not wait for the work to stop.
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// After the first call, subsequent calls to a CancelFunc do nothing.
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type CancelFunc = context.CancelFunc
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							@@ -1,300 +0,0 @@
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// Copyright 2014 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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		||||
// license that can be found in the LICENSE file.
 | 
			
		||||
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		||||
// +build !go1.7
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package context
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import (
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	"errors"
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	"fmt"
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	"sync"
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	"time"
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)
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// An emptyCtx is never canceled, has no values, and has no deadline. It is not
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// struct{}, since vars of this type must have distinct addresses.
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type emptyCtx int
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func (*emptyCtx) Deadline() (deadline time.Time, ok bool) {
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	return
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}
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		||||
func (*emptyCtx) Done() <-chan struct{} {
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		||||
	return nil
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		||||
}
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		||||
 | 
			
		||||
func (*emptyCtx) Err() error {
 | 
			
		||||
	return nil
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		||||
}
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		||||
 | 
			
		||||
func (*emptyCtx) Value(key interface{}) interface{} {
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		||||
	return nil
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		||||
}
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		||||
 | 
			
		||||
func (e *emptyCtx) String() string {
 | 
			
		||||
	switch e {
 | 
			
		||||
	case background:
 | 
			
		||||
		return "context.Background"
 | 
			
		||||
	case todo:
 | 
			
		||||
		return "context.TODO"
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		||||
	}
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		||||
	return "unknown empty Context"
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		||||
}
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var (
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	background = new(emptyCtx)
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	todo       = new(emptyCtx)
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		||||
)
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		||||
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		||||
// Canceled is the error returned by Context.Err when the context is canceled.
 | 
			
		||||
var Canceled = errors.New("context canceled")
 | 
			
		||||
 | 
			
		||||
// DeadlineExceeded is the error returned by Context.Err when the context's
 | 
			
		||||
// deadline passes.
 | 
			
		||||
var DeadlineExceeded = errors.New("context deadline exceeded")
 | 
			
		||||
 | 
			
		||||
// WithCancel returns a copy of parent with a new Done channel. The returned
 | 
			
		||||
// context's Done channel is closed when the returned cancel function is called
 | 
			
		||||
// or when the parent context's Done channel is closed, whichever happens first.
 | 
			
		||||
//
 | 
			
		||||
// Canceling this context releases resources associated with it, so code should
 | 
			
		||||
// call cancel as soon as the operations running in this Context complete.
 | 
			
		||||
func WithCancel(parent Context) (ctx Context, cancel CancelFunc) {
 | 
			
		||||
	c := newCancelCtx(parent)
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		||||
	propagateCancel(parent, c)
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		||||
	return c, func() { c.cancel(true, Canceled) }
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		||||
}
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		||||
// newCancelCtx returns an initialized cancelCtx.
 | 
			
		||||
func newCancelCtx(parent Context) *cancelCtx {
 | 
			
		||||
	return &cancelCtx{
 | 
			
		||||
		Context: parent,
 | 
			
		||||
		done:    make(chan struct{}),
 | 
			
		||||
	}
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		||||
}
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		||||
// propagateCancel arranges for child to be canceled when parent is.
 | 
			
		||||
func propagateCancel(parent Context, child canceler) {
 | 
			
		||||
	if parent.Done() == nil {
 | 
			
		||||
		return // parent is never canceled
 | 
			
		||||
	}
 | 
			
		||||
	if p, ok := parentCancelCtx(parent); ok {
 | 
			
		||||
		p.mu.Lock()
 | 
			
		||||
		if p.err != nil {
 | 
			
		||||
			// parent has already been canceled
 | 
			
		||||
			child.cancel(false, p.err)
 | 
			
		||||
		} else {
 | 
			
		||||
			if p.children == nil {
 | 
			
		||||
				p.children = make(map[canceler]bool)
 | 
			
		||||
			}
 | 
			
		||||
			p.children[child] = true
 | 
			
		||||
		}
 | 
			
		||||
		p.mu.Unlock()
 | 
			
		||||
	} else {
 | 
			
		||||
		go func() {
 | 
			
		||||
			select {
 | 
			
		||||
			case <-parent.Done():
 | 
			
		||||
				child.cancel(false, parent.Err())
 | 
			
		||||
			case <-child.Done():
 | 
			
		||||
			}
 | 
			
		||||
		}()
 | 
			
		||||
	}
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		||||
}
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		||||
// parentCancelCtx follows a chain of parent references until it finds a
 | 
			
		||||
// *cancelCtx. This function understands how each of the concrete types in this
 | 
			
		||||
// package represents its parent.
 | 
			
		||||
func parentCancelCtx(parent Context) (*cancelCtx, bool) {
 | 
			
		||||
	for {
 | 
			
		||||
		switch c := parent.(type) {
 | 
			
		||||
		case *cancelCtx:
 | 
			
		||||
			return c, true
 | 
			
		||||
		case *timerCtx:
 | 
			
		||||
			return c.cancelCtx, true
 | 
			
		||||
		case *valueCtx:
 | 
			
		||||
			parent = c.Context
 | 
			
		||||
		default:
 | 
			
		||||
			return nil, false
 | 
			
		||||
		}
 | 
			
		||||
	}
 | 
			
		||||
}
 | 
			
		||||
 | 
			
		||||
// removeChild removes a context from its parent.
 | 
			
		||||
func removeChild(parent Context, child canceler) {
 | 
			
		||||
	p, ok := parentCancelCtx(parent)
 | 
			
		||||
	if !ok {
 | 
			
		||||
		return
 | 
			
		||||
	}
 | 
			
		||||
	p.mu.Lock()
 | 
			
		||||
	if p.children != nil {
 | 
			
		||||
		delete(p.children, child)
 | 
			
		||||
	}
 | 
			
		||||
	p.mu.Unlock()
 | 
			
		||||
}
 | 
			
		||||
 | 
			
		||||
// A canceler is a context type that can be canceled directly. The
 | 
			
		||||
// implementations are *cancelCtx and *timerCtx.
 | 
			
		||||
type canceler interface {
 | 
			
		||||
	cancel(removeFromParent bool, err error)
 | 
			
		||||
	Done() <-chan struct{}
 | 
			
		||||
}
 | 
			
		||||
 | 
			
		||||
// A cancelCtx can be canceled. When canceled, it also cancels any children
 | 
			
		||||
// that implement canceler.
 | 
			
		||||
type cancelCtx struct {
 | 
			
		||||
	Context
 | 
			
		||||
 | 
			
		||||
	done chan struct{} // closed by the first cancel call.
 | 
			
		||||
 | 
			
		||||
	mu       sync.Mutex
 | 
			
		||||
	children map[canceler]bool // set to nil by the first cancel call
 | 
			
		||||
	err      error             // set to non-nil by the first cancel call
 | 
			
		||||
}
 | 
			
		||||
 | 
			
		||||
func (c *cancelCtx) Done() <-chan struct{} {
 | 
			
		||||
	return c.done
 | 
			
		||||
}
 | 
			
		||||
 | 
			
		||||
func (c *cancelCtx) Err() error {
 | 
			
		||||
	c.mu.Lock()
 | 
			
		||||
	defer c.mu.Unlock()
 | 
			
		||||
	return c.err
 | 
			
		||||
}
 | 
			
		||||
 | 
			
		||||
func (c *cancelCtx) String() string {
 | 
			
		||||
	return fmt.Sprintf("%v.WithCancel", c.Context)
 | 
			
		||||
}
 | 
			
		||||
 | 
			
		||||
// cancel closes c.done, cancels each of c's children, and, if
 | 
			
		||||
// removeFromParent is true, removes c from its parent's children.
 | 
			
		||||
func (c *cancelCtx) cancel(removeFromParent bool, err error) {
 | 
			
		||||
	if err == nil {
 | 
			
		||||
		panic("context: internal error: missing cancel error")
 | 
			
		||||
	}
 | 
			
		||||
	c.mu.Lock()
 | 
			
		||||
	if c.err != nil {
 | 
			
		||||
		c.mu.Unlock()
 | 
			
		||||
		return // already canceled
 | 
			
		||||
	}
 | 
			
		||||
	c.err = err
 | 
			
		||||
	close(c.done)
 | 
			
		||||
	for child := range c.children {
 | 
			
		||||
		// NOTE: acquiring the child's lock while holding parent's lock.
 | 
			
		||||
		child.cancel(false, err)
 | 
			
		||||
	}
 | 
			
		||||
	c.children = nil
 | 
			
		||||
	c.mu.Unlock()
 | 
			
		||||
 | 
			
		||||
	if removeFromParent {
 | 
			
		||||
		removeChild(c.Context, c)
 | 
			
		||||
	}
 | 
			
		||||
}
 | 
			
		||||
 | 
			
		||||
// WithDeadline returns a copy of the parent context with the deadline adjusted
 | 
			
		||||
// to be no later than d. If the parent's deadline is already earlier than d,
 | 
			
		||||
// WithDeadline(parent, d) is semantically equivalent to parent. The returned
 | 
			
		||||
// context's Done channel is closed when the deadline expires, when the returned
 | 
			
		||||
// cancel function is called, or when the parent context's Done channel is
 | 
			
		||||
// closed, whichever happens first.
 | 
			
		||||
//
 | 
			
		||||
// Canceling this context releases resources associated with it, so code should
 | 
			
		||||
// call cancel as soon as the operations running in this Context complete.
 | 
			
		||||
func WithDeadline(parent Context, deadline time.Time) (Context, CancelFunc) {
 | 
			
		||||
	if cur, ok := parent.Deadline(); ok && cur.Before(deadline) {
 | 
			
		||||
		// The current deadline is already sooner than the new one.
 | 
			
		||||
		return WithCancel(parent)
 | 
			
		||||
	}
 | 
			
		||||
	c := &timerCtx{
 | 
			
		||||
		cancelCtx: newCancelCtx(parent),
 | 
			
		||||
		deadline:  deadline,
 | 
			
		||||
	}
 | 
			
		||||
	propagateCancel(parent, c)
 | 
			
		||||
	d := deadline.Sub(time.Now())
 | 
			
		||||
	if d <= 0 {
 | 
			
		||||
		c.cancel(true, DeadlineExceeded) // deadline has already passed
 | 
			
		||||
		return c, func() { c.cancel(true, Canceled) }
 | 
			
		||||
	}
 | 
			
		||||
	c.mu.Lock()
 | 
			
		||||
	defer c.mu.Unlock()
 | 
			
		||||
	if c.err == nil {
 | 
			
		||||
		c.timer = time.AfterFunc(d, func() {
 | 
			
		||||
			c.cancel(true, DeadlineExceeded)
 | 
			
		||||
		})
 | 
			
		||||
	}
 | 
			
		||||
	return c, func() { c.cancel(true, Canceled) }
 | 
			
		||||
}
 | 
			
		||||
 | 
			
		||||
// A timerCtx carries a timer and a deadline. It embeds a cancelCtx to
 | 
			
		||||
// implement Done and Err. It implements cancel by stopping its timer then
 | 
			
		||||
// delegating to cancelCtx.cancel.
 | 
			
		||||
type timerCtx struct {
 | 
			
		||||
	*cancelCtx
 | 
			
		||||
	timer *time.Timer // Under cancelCtx.mu.
 | 
			
		||||
 | 
			
		||||
	deadline time.Time
 | 
			
		||||
}
 | 
			
		||||
 | 
			
		||||
func (c *timerCtx) Deadline() (deadline time.Time, ok bool) {
 | 
			
		||||
	return c.deadline, true
 | 
			
		||||
}
 | 
			
		||||
 | 
			
		||||
func (c *timerCtx) String() string {
 | 
			
		||||
	return fmt.Sprintf("%v.WithDeadline(%s [%s])", c.cancelCtx.Context, c.deadline, c.deadline.Sub(time.Now()))
 | 
			
		||||
}
 | 
			
		||||
 | 
			
		||||
func (c *timerCtx) cancel(removeFromParent bool, err error) {
 | 
			
		||||
	c.cancelCtx.cancel(false, err)
 | 
			
		||||
	if removeFromParent {
 | 
			
		||||
		// Remove this timerCtx from its parent cancelCtx's children.
 | 
			
		||||
		removeChild(c.cancelCtx.Context, c)
 | 
			
		||||
	}
 | 
			
		||||
	c.mu.Lock()
 | 
			
		||||
	if c.timer != nil {
 | 
			
		||||
		c.timer.Stop()
 | 
			
		||||
		c.timer = nil
 | 
			
		||||
	}
 | 
			
		||||
	c.mu.Unlock()
 | 
			
		||||
}
 | 
			
		||||
 | 
			
		||||
// WithTimeout returns WithDeadline(parent, time.Now().Add(timeout)).
 | 
			
		||||
//
 | 
			
		||||
// Canceling this context releases resources associated with it, so code should
 | 
			
		||||
// call cancel as soon as the operations running in this Context complete:
 | 
			
		||||
//
 | 
			
		||||
// 	func slowOperationWithTimeout(ctx context.Context) (Result, error) {
 | 
			
		||||
// 		ctx, cancel := context.WithTimeout(ctx, 100*time.Millisecond)
 | 
			
		||||
// 		defer cancel()  // releases resources if slowOperation completes before timeout elapses
 | 
			
		||||
// 		return slowOperation(ctx)
 | 
			
		||||
// 	}
 | 
			
		||||
func WithTimeout(parent Context, timeout time.Duration) (Context, CancelFunc) {
 | 
			
		||||
	return WithDeadline(parent, time.Now().Add(timeout))
 | 
			
		||||
}
 | 
			
		||||
 | 
			
		||||
// WithValue returns a copy of parent in which the value associated with key is
 | 
			
		||||
// val.
 | 
			
		||||
//
 | 
			
		||||
// Use context Values only for request-scoped data that transits processes and
 | 
			
		||||
// APIs, not for passing optional parameters to functions.
 | 
			
		||||
func WithValue(parent Context, key interface{}, val interface{}) Context {
 | 
			
		||||
	return &valueCtx{parent, key, val}
 | 
			
		||||
}
 | 
			
		||||
 | 
			
		||||
// A valueCtx carries a key-value pair. It implements Value for that key and
 | 
			
		||||
// delegates all other calls to the embedded Context.
 | 
			
		||||
type valueCtx struct {
 | 
			
		||||
	Context
 | 
			
		||||
	key, val interface{}
 | 
			
		||||
}
 | 
			
		||||
 | 
			
		||||
func (c *valueCtx) String() string {
 | 
			
		||||
	return fmt.Sprintf("%v.WithValue(%#v, %#v)", c.Context, c.key, c.val)
 | 
			
		||||
}
 | 
			
		||||
 | 
			
		||||
func (c *valueCtx) Value(key interface{}) interface{} {
 | 
			
		||||
	if c.key == key {
 | 
			
		||||
		return c.val
 | 
			
		||||
	}
 | 
			
		||||
	return c.Context.Value(key)
 | 
			
		||||
}
 | 
			
		||||
							
								
								
									
										109
									
								
								vendor/golang.org/x/net/context/pre_go19.go
									
									
									
										generated
									
									
										vendored
									
									
								
							
							
						
						
									
										109
									
								
								vendor/golang.org/x/net/context/pre_go19.go
									
									
									
										generated
									
									
										vendored
									
									
								
							@@ -1,109 +0,0 @@
 | 
			
		||||
// Copyright 2014 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 !go1.9
 | 
			
		||||
 | 
			
		||||
package context
 | 
			
		||||
 | 
			
		||||
import "time"
 | 
			
		||||
 | 
			
		||||
// A Context carries a deadline, a cancelation signal, and other values across
 | 
			
		||||
// API boundaries.
 | 
			
		||||
//
 | 
			
		||||
// Context's methods may be called by multiple goroutines simultaneously.
 | 
			
		||||
type Context interface {
 | 
			
		||||
	// Deadline returns the time when work done on behalf of this context
 | 
			
		||||
	// should be canceled. Deadline returns ok==false when no deadline is
 | 
			
		||||
	// set. Successive calls to Deadline return the same results.
 | 
			
		||||
	Deadline() (deadline time.Time, ok bool)
 | 
			
		||||
 | 
			
		||||
	// Done returns a channel that's closed when work done on behalf of this
 | 
			
		||||
	// context should be canceled. Done may return nil if this context can
 | 
			
		||||
	// never be canceled. Successive calls to Done return the same value.
 | 
			
		||||
	//
 | 
			
		||||
	// WithCancel arranges for Done to be closed when cancel is called;
 | 
			
		||||
	// WithDeadline arranges for Done to be closed when the deadline
 | 
			
		||||
	// expires; WithTimeout arranges for Done to be closed when the timeout
 | 
			
		||||
	// elapses.
 | 
			
		||||
	//
 | 
			
		||||
	// Done is provided for use in select statements:
 | 
			
		||||
	//
 | 
			
		||||
	//  // Stream generates values with DoSomething and sends them to out
 | 
			
		||||
	//  // until DoSomething returns an error or ctx.Done is closed.
 | 
			
		||||
	//  func Stream(ctx context.Context, out chan<- Value) error {
 | 
			
		||||
	//  	for {
 | 
			
		||||
	//  		v, err := DoSomething(ctx)
 | 
			
		||||
	//  		if err != nil {
 | 
			
		||||
	//  			return err
 | 
			
		||||
	//  		}
 | 
			
		||||
	//  		select {
 | 
			
		||||
	//  		case <-ctx.Done():
 | 
			
		||||
	//  			return ctx.Err()
 | 
			
		||||
	//  		case out <- v:
 | 
			
		||||
	//  		}
 | 
			
		||||
	//  	}
 | 
			
		||||
	//  }
 | 
			
		||||
	//
 | 
			
		||||
	// See http://blog.golang.org/pipelines for more examples of how to use
 | 
			
		||||
	// a Done channel for cancelation.
 | 
			
		||||
	Done() <-chan struct{}
 | 
			
		||||
 | 
			
		||||
	// Err returns a non-nil error value after Done is closed. Err returns
 | 
			
		||||
	// Canceled if the context was canceled or DeadlineExceeded if the
 | 
			
		||||
	// context's deadline passed. No other values for Err are defined.
 | 
			
		||||
	// After Done is closed, successive calls to Err return the same value.
 | 
			
		||||
	Err() error
 | 
			
		||||
 | 
			
		||||
	// Value returns the value associated with this context for key, or nil
 | 
			
		||||
	// if no value is associated with key. Successive calls to Value with
 | 
			
		||||
	// the same key returns the same result.
 | 
			
		||||
	//
 | 
			
		||||
	// Use context values only for request-scoped data that transits
 | 
			
		||||
	// processes and API boundaries, not for passing optional parameters to
 | 
			
		||||
	// functions.
 | 
			
		||||
	//
 | 
			
		||||
	// A key identifies a specific value in a Context. Functions that wish
 | 
			
		||||
	// to store values in Context typically allocate a key in a global
 | 
			
		||||
	// variable then use that key as the argument to context.WithValue and
 | 
			
		||||
	// Context.Value. A key can be any type that supports equality;
 | 
			
		||||
	// packages should define keys as an unexported type to avoid
 | 
			
		||||
	// collisions.
 | 
			
		||||
	//
 | 
			
		||||
	// Packages that define a Context key should provide type-safe accessors
 | 
			
		||||
	// for the values stores using that key:
 | 
			
		||||
	//
 | 
			
		||||
	// 	// Package user defines a User type that's stored in Contexts.
 | 
			
		||||
	// 	package user
 | 
			
		||||
	//
 | 
			
		||||
	// 	import "golang.org/x/net/context"
 | 
			
		||||
	//
 | 
			
		||||
	// 	// User is the type of value stored in the Contexts.
 | 
			
		||||
	// 	type User struct {...}
 | 
			
		||||
	//
 | 
			
		||||
	// 	// key is an unexported type for keys defined in this package.
 | 
			
		||||
	// 	// This prevents collisions with keys defined in other packages.
 | 
			
		||||
	// 	type key int
 | 
			
		||||
	//
 | 
			
		||||
	// 	// userKey is the key for user.User values in Contexts. It is
 | 
			
		||||
	// 	// unexported; clients use user.NewContext and user.FromContext
 | 
			
		||||
	// 	// instead of using this key directly.
 | 
			
		||||
	// 	var userKey key = 0
 | 
			
		||||
	//
 | 
			
		||||
	// 	// NewContext returns a new Context that carries value u.
 | 
			
		||||
	// 	func NewContext(ctx context.Context, u *User) context.Context {
 | 
			
		||||
	// 		return context.WithValue(ctx, userKey, u)
 | 
			
		||||
	// 	}
 | 
			
		||||
	//
 | 
			
		||||
	// 	// FromContext returns the User value stored in ctx, if any.
 | 
			
		||||
	// 	func FromContext(ctx context.Context) (*User, bool) {
 | 
			
		||||
	// 		u, ok := ctx.Value(userKey).(*User)
 | 
			
		||||
	// 		return u, ok
 | 
			
		||||
	// 	}
 | 
			
		||||
	Value(key interface{}) interface{}
 | 
			
		||||
}
 | 
			
		||||
 | 
			
		||||
// A CancelFunc tells an operation to abandon its work.
 | 
			
		||||
// A CancelFunc does not wait for the work to stop.
 | 
			
		||||
// After the first call, subsequent calls to a CancelFunc do nothing.
 | 
			
		||||
type CancelFunc func()
 | 
			
		||||
		Reference in New Issue
	
	Block a user