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cmd/compile: add Node.IsMethod helper

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Changes generated with eg:

func before(n *gc.Node) bool { return n.Type.Recv() != nil }
func after(n *gc.Node) bool  { return n.IsMethod() }

func before(n *gc.Node) bool { return n.Type.Recv() == nil }
func after(n *gc.Node) bool  { return !n.IsMethod() }

Change-Id: I28e544490d17bbdc06ab11ed32464af5802ab206
Reviewed-on: https://go-review.googlesource.com/28968
Run-TryBot: Josh Bleecher Snyder <josharian@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
This commit is contained in:
Josh Bleecher Snyder 2016-09-11 14:43:37 -07:00
parent 3bf141955b
commit 2e4dc86bfb
5 changed files with 12 additions and 6 deletions
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6
src/cmd/compile/internal/gc/subr.go
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@ -1038,6 +1038,12 @@ func Is64(t *Type) bool {
return false
}
// IsMethod reports whether n is a method.
// n must be a function or a method.
func (n *Node) IsMethod() bool {
return n.Type.Recv() != nil
}
// SliceBounds returns n's slice bounds: low, high, and max in expr[low:high:max].
// n must be a slice expression. max is nil if n is a simple slice expression.
func (n *Node) SliceBounds() (low, high, max *Node) {