go chan 源码
golang chan 代码
文件路径：/src/cmd/compile/internal/types2/chan.go
// Copyright 2011 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 types2
// A Chan represents a channel type.
type Chan struct {
dir ChanDir
elem Type
}
// A ChanDir value indicates a channel direction.
type ChanDir int
// The direction of a channel is indicated by one of these constants.
const (
SendRecv ChanDir = iota
SendOnly
RecvOnly
)
// NewChan returns a new channel type for the given direction and element type.
func NewChan(dir ChanDir, elem Type) *Chan {
return &Chan{dir: dir, elem: elem}
}
// Dir returns the direction of channel c.
func (c *Chan) Dir() ChanDir { return c.dir }
// Elem returns the element type of channel c.
func (c *Chan) Elem() Type { return c.elem }
func (c *Chan) Underlying() Type { return c }
func (c *Chan) String() string { return TypeString(c, nil) }
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