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go/doc: fix build

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1) go/doc:
   - create correct ast.FuncType
   - use more commonly used variable names in a test case

2) make ast.FuncType.Pos robust in case of incorrect ASTs

R=golang-dev
CC=golang-dev
https://golang.org/cl/9651044
This commit is contained in:
Robert Griesemer 2013-05-22 14:22:50 -07:00
parent 8f37e41963
commit e3a72b05f8
3 changed files with 7 additions and 7 deletions
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2
src/pkg/go/ast/ast.go
View File

@ -439,7 +439,7 @@ func (x *KeyValueExpr) Pos() token.Pos { return x.Key.Pos() }
func (x *ArrayType) Pos() token.Pos { return x.Lbrack }
func (x *StructType) Pos() token.Pos { return x.Struct }
func (x *FuncType) Pos() token.Pos {
if x.Func.IsValid() {
if x.Func.IsValid() || x.Params == nil { // see issue 3870
return x.Func
}
return x.Params.Pos() // interface method declarations have no "func" keyword

2
src/pkg/go/doc/example.go
View File

@ -265,7 +265,7 @@ func playExample(file *ast.File, body *ast.BlockStmt) *ast.File {
// Synthesize main function.
funcDecl := &ast.FuncDecl{
Name: ast.NewIdent("main"),
Type: &ast.FuncType{},
Type: &ast.FuncType{Params: &ast.FieldList{}}, // FuncType.Params must be non-nil
Body: body,
}

10
src/pkg/go/doc/example_test.go
View File

@ -159,8 +159,8 @@ func main() {
`
func TestExamples(t *testing.T) {
fs := token.NewFileSet()
file, err := parser.ParseFile(fs, "test.go", strings.NewReader(exampleTestFile), parser.ParseComments)
fset := token.NewFileSet()
file, err := parser.ParseFile(fset, "test.go", strings.NewReader(exampleTestFile), parser.ParseComments)
if err != nil {
t.Fatal(err)
}
@ -174,11 +174,11 @@ func TestExamples(t *testing.T) {
if e.Play == nil {
g = "<nil>"
} else {
b := new(bytes.Buffer)
if err := format.Node(b, fs, e.Play); err != nil {
var buf bytes.Buffer
if err := format.Node(&buf, fset, e.Play); err != nil {
t.Fatal(err)
}
g = b.String()
g = buf.String()
}
if g != w {
t.Errorf("%s: got Play == %q, want %q", c.Name, g, w)