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package channels
// NativeInChannel implements the InChannel interface by wrapping a native go write-only channel.
type NativeInChannel chan<- interface{}
func (ch NativeInChannel) In() chan<- interface{} {
return ch
}
func (ch NativeInChannel) Len() int {
return len(ch)
}
func (ch NativeInChannel) Cap() BufferCap {
return BufferCap(cap(ch))
}
func (ch NativeInChannel) Close() {
close(ch)
}
// NativeOutChannel implements the OutChannel interface by wrapping a native go read-only channel.
type NativeOutChannel <-chan interface{}
func (ch NativeOutChannel) Out() <-chan interface{} {
return ch
}
func (ch NativeOutChannel) Len() int {
return len(ch)
}
func (ch NativeOutChannel) Cap() BufferCap {
return BufferCap(cap(ch))
}
// NativeChannel implements the Channel interface by wrapping a native go channel.
type NativeChannel chan interface{}
// NewNativeChannel makes a new NativeChannel with the given buffer size. Just a convenience wrapper
// to avoid having to cast the result of make().
func NewNativeChannel(size BufferCap) NativeChannel {
return make(chan interface{}, size)
}
func (ch NativeChannel) In() chan<- interface{} {
return ch
}
func (ch NativeChannel) Out() <-chan interface{} {
return ch
}
func (ch NativeChannel) Len() int {
return len(ch)
}
func (ch NativeChannel) Cap() BufferCap {
return BufferCap(cap(ch))
}
func (ch NativeChannel) Close() {
close(ch)
}
// DeadChannel is a placeholder implementation of the Channel interface with no buffer
// that is never ready for reading or writing. Closing a dead channel is a no-op.
// Behaves almost like NativeChannel(nil) except that closing a nil NativeChannel will panic.
type DeadChannel struct{}
func NewDeadChannel() DeadChannel {
return DeadChannel{}
}
func (ch DeadChannel) In() chan<- interface{} {
return nil
}
func (ch DeadChannel) Out() <-chan interface{} {
return nil
}
func (ch DeadChannel) Len() int {
return 0
}
func (ch DeadChannel) Cap() BufferCap {
return BufferCap(0)
}
func (ch DeadChannel) Close() {
}
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