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cmd/compile: give ChanDir a type

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Change-Id: I03621db79637b04982e1f0e7b4268c4ed2db6d22
Reviewed-on: https://go-review.googlesource.com/21484
Reviewed-by: Josh Bleecher Snyder <josharian@gmail.com>
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
This commit is contained in:
Brad Fitzpatrick 2016-04-03 22:58:10 +00:00
parent 73edd7b208
commit 386c0e6598
8 changed files with 27 additions and 21 deletions
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12
src/cmd/compile/internal/gc/go.go
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@ -128,12 +128,18 @@ const (
CTNIL
)
// ChanDir is whether a channel can send, receive, or both.
type ChanDir uint8
func (c ChanDir) CanRecv() bool { return c&Crecv != 0 }
func (c ChanDir) CanSend() bool { return c&Csend != 0 }
const (
// types of channel
// must match ../../../../reflect/type.go:/ChanDir
Crecv = 1 << 0
Csend = 1 << 1
Cboth = Crecv | Csend
Crecv ChanDir = 1 << 0
Csend ChanDir = 1 << 1
Cboth ChanDir = Crecv | Csend
)
// The Class of a variable/function describes the "storage class"