golang ui 代码
文件路径：/src/cmd/vendor/golang.org/x/tools/go/types/typeutil/ui.go
/ Copyright 2014 The Go Authors. All rights reserved.
/ Use of this source code is governed by a BSD-style
/ license that can be found in the LICENSE file.
package typeutil
/ This file defines utilities for user interfaces that display types.
import "go/types"
/ IntuitiveMethodSet returns the intuitive method set of a type T,
/ which is the set of methods you can call on an addressable value of
/ that type.
/
/ The result always contains MethodSet(T), and is exactly MethodSet(T)
/ for interface types and for pointer-to-concrete types.
/ For all other concrete types T, the result additionally
/ contains each method belonging to *T if there is no identically
/ named method on T itself.
/
/ This corresponds to user intuition about method sets;
/ this function is intended only for user interfaces.
/
/ The order of the result is as for types.MethodSet(T).
func IntuitiveMethodSet(T types.Type, msets *MethodSetCache) []*types.Selection {
isPointerToConcrete := func(T types.Type) bool {
ptr, ok := T.(*types.Pointer)
return ok && !types.IsInterface(ptr.Elem())
}
var result []*types.Selection
mset := msets.MethodSet(T)
if types.IsInterface(T) || isPointerToConcrete(T) {
for i, n := 0, mset.Len(); i < n; i++ {
result = append(result, mset.At(i))
}
} else {
/ T is some other concrete type.
/ Report methods of T and *T, preferring those of T.
pmset := msets.MethodSet(types.NewPointer(T))
for i, n := 0, pmset.Len(); i < n; i++ {
meth := pmset.At(i)
if m := mset.Lookup(meth.Obj().Pkg(), meth.Obj().Name()); m != nil {
meth = m
}
result = append(result, meth)
}
}
return result
}