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// Copyright 2019 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.
// +build !go1.12
package impl
import "reflect"
type mapIter struct {
v reflect.Value
keys []reflect.Value
}
// mapRange provides a less-efficient equivalent to
// the Go 1.12 reflect.Value.MapRange method.
func mapRange(v reflect.Value) *mapIter {
return &mapIter{v: v}
}
func (i *mapIter) Next() bool {
if i.keys == nil {
i.keys = i.v.MapKeys()
} else {
i.keys = i.keys[1:]
}
return len(i.keys) > 0
}
func (i *mapIter) Key() reflect.Value {
return i.keys[0]
}
func (i *mapIter) Value() reflect.Value {
return i.v.MapIndex(i.keys[0])
}
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