Source file src/golang.org/x/tools/internal/xcontext/xcontext.go

Documentation: golang.org/x/tools/internal/xcontext

     1  // Copyright 2019 The Go Authors. All rights reserved.
     2  // Use of this source code is governed by a BSD-style
     3  // license that can be found in the LICENSE file.
     4  
     5  // Package xcontext is a package to offer the extra functionality we need
     6  // from contexts that is not available from the standard context package.
     7  package xcontext
     8  
     9  import (
    10  	"context"
    11  	"time"
    12  )
    13  
    14  // Detach returns a context that keeps all the values of its parent context
    15  // but detaches from the cancellation and error handling.
    16  func Detach(ctx context.Context) context.Context { return detachedContext{ctx} }
    17  
    18  type detachedContext struct{ parent context.Context }
    19  
    20  func (v detachedContext) Deadline() (time.Time, bool)       { return time.Time{}, false }
    21  func (v detachedContext) Done() <-chan struct{}             { return nil }
    22  func (v detachedContext) Err() error                        { return nil }
    23  func (v detachedContext) Value(key interface{}) interface{} { return v.parent.Value(key) }
    24  

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