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cmd/api: fix signatures like func(x, y, z int)

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Fixes writing of function parameter, result lists which
consist of multiple named or unnamed items with same type.

Fixes #4011.

R=golang-dev, bsiegert, bradfitz, rsc
CC=golang-dev
https://golang.org/cl/6475062
This commit is contained in:
Mikio Hara 2012-09-19 07:04:12 +09:00
parent 51e85612f9
commit 1ad5f87635
3 changed files with 32 additions and 3 deletions
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26
src/cmd/api/goapi.go
View file

@ -1017,18 +1017,38 @@ func (w *Walker) walkFuncDecl(f *ast.FuncDecl) {
func (w *Walker) funcSigString(ft *ast.FuncType) string {
var b bytes.Buffer
writeField := func(b *bytes.Buffer, f *ast.Field) {
if n := len(f.Names); n > 1 {
for i := 0; i < n; i++ {
if i > 0 {
b.WriteString(", ")
}
b.WriteString(w.nodeString(w.namelessType(f.Type)))
}
} else {
b.WriteString(w.nodeString(w.namelessType(f.Type)))
}
}
b.WriteByte('(')
if ft.Params != nil {
for i, f := range ft.Params.List {
if i > 0 {
b.WriteString(", ")
}
b.WriteString(w.nodeString(w.namelessType(f.Type)))
writeField(&b, f)
}
}
b.WriteByte(')')
if ft.Results != nil {
if nr := len(ft.Results.List); nr > 0 {
nr := 0
for _, f := range ft.Results.List {
if n := len(f.Names); n > 1 {
nr += n
} else {
nr++
}
}
if nr > 0 {
b.WriteByte(' ')
if nr > 1 {
b.WriteByte('(')
@ -1037,7 +1057,7 @@ func (w *Walker) funcSigString(ft *ast.FuncType) string {
if i > 0 {
b.WriteString(", ")
}
b.WriteString(w.nodeString(w.namelessType(f.Type)))
writeField(&b, f)
}
if nr > 1 {
b.WriteByte(')')