func Example() {
stmt, err := parserutil.ParseStmt("var x int")
if err != nil {
panic(err)
}
ast.Fprint(os.Stdout, nil, stmt, nil)
// Output:
// 0 *ast.DeclStmt {
// 1 . Decl: *ast.GenDecl {
// 2 . . Doc: nil
// 3 . . TokPos: 31
// 4 . . Tok: var
// 5 . . Lparen: 0
// 6 . . Specs: []ast.Spec (len = 1) {
// 7 . . . 0: *ast.ValueSpec {
// 8 . . . . Doc: nil
// 9 . . . . Names: []*ast.Ident (len = 1) {
// 10 . . . . . 0: *ast.Ident {
// 11 . . . . . . NamePos: 35
// 12 . . . . . . Name: "x"
// 13 . . . . . . Obj: *ast.Object {
// 14 . . . . . . . Kind: var
// 15 . . . . . . . Name: "x"
// 16 . . . . . . . Decl: *(obj @ 7)
// 17 . . . . . . . Data: 0
// 18 . . . . . . . Type: nil
// 19 . . . . . . }
// 20 . . . . . }
// 21 . . . . }
// 22 . . . . Type: *ast.Ident {
// 23 . . . . . NamePos: 37
// 24 . . . . . Name: "int"
// 25 . . . . . Obj: nil
// 26 . . . . }
// 27 . . . . Values: nil
// 28 . . . . Comment: nil
// 29 . . . }
// 30 . . }
// 31 . . Rparen: 0
// 32 . }
// 33 }
}
func getParent2ArgExprAllAsAst() []ast.Expr {
// TODO: Replace use of debug.Stack() with direct use of runtime package...
stack := string(stack())
// TODO: Bounds error checking, get rid of GetLine gists, etc.
parentName := getLine(stack, 5)
if !strings.Contains(parentName, ": ") {
// TODO: This happens when source file isn't present in same location as when built. See if can do anything better
// via direct use of runtime package (instead of debug.Stack(), which will exclude any func names)...
return nil
}
parentName = parentName[1:strings.Index(parentName, ": ")]
if dotPos := strings.LastIndex(parentName, "."); dotPos != -1 { // Trim package prefix.
parentName = parentName[dotPos+1:]
}
str := getLine(stack, 7)
str = str[strings.Index(str, ": ")+len(": "):]
p, err := parserutil.ParseStmt(str)
if err != nil {
return nil
}
innerQuery := func(i interface{}) bool {
if ident, ok := i.(*ast.Ident); ok && ident.Name == parentName {
return true
}
return false
}
query := func(i interface{}) bool {
if c, ok := i.(*ast.CallExpr); ok && nil != reflectfind.First(c.Fun, innerQuery) {
return true
}
return false
}
callExpr, _ := reflectfind.First(p, query).(*ast.CallExpr)
if callExpr == nil {
return nil
}
return callExpr.Args
}