diff options
Diffstat (limited to 'vendor/google.golang.org/protobuf/internal/impl/codec_map_go111.go')
-rw-r--r-- | vendor/google.golang.org/protobuf/internal/impl/codec_map_go111.go | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/vendor/google.golang.org/protobuf/internal/impl/codec_map_go111.go b/vendor/google.golang.org/protobuf/internal/impl/codec_map_go111.go new file mode 100644 index 000000000..2706bb67f --- /dev/null +++ b/vendor/google.golang.org/protobuf/internal/impl/codec_map_go111.go @@ -0,0 +1,37 @@ +// 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]) +} |