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40 lines
856 B
Go
40 lines
856 B
Go
// +build !go1.7
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package context
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import "time"
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// An emptyCtx is a copy of the Go 1.7 context.emptyCtx type. This is copied to
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// provide a 1.6 and 1.5 safe version of context that is compatible with Go
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// 1.7's Context.
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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 {
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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 {
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switch e {
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case BackgroundCtx:
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return "aws.BackgroundContext"
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}
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return "unknown empty Context"
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}
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// BackgroundCtx is the common base context.
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var BackgroundCtx = new(emptyCtx)
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