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https://github.com/protocolbuffers/protobuf-go.git
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e89e6244e0
Temporarily remove go.mod, since we can't generate an accurate one until the corresponding v1 change is submitted. Change-Id: I1e1ad97f2b455e33f61ffaeb8676289795e47e72 Reviewed-on: https://go-review.googlesource.com/c/protobuf/+/177000 Reviewed-by: Joe Tsai <thebrokentoaster@gmail.com>
51 lines
1.1 KiB
Go
51 lines
1.1 KiB
Go
// Copyright 2018 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package value
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import (
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"reflect"
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pref "google.golang.org/protobuf/reflect/protoreflect"
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)
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func ListOf(p interface{}, c Converter) interface {
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pref.List
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Unwrapper
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} {
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// TODO: Validate that p is a *[]T?
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rv := reflect.ValueOf(p)
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return listReflect{rv, c}
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}
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type listReflect struct {
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v reflect.Value // *[]T
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conv Converter
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}
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func (ls listReflect) Len() int {
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if ls.v.IsNil() {
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return 0
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}
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return ls.v.Elem().Len()
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}
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func (ls listReflect) Get(i int) pref.Value {
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return ls.conv.PBValueOf(ls.v.Elem().Index(i))
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}
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func (ls listReflect) Set(i int, v pref.Value) {
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ls.v.Elem().Index(i).Set(ls.conv.GoValueOf(v))
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}
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func (ls listReflect) Append(v pref.Value) {
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ls.v.Elem().Set(reflect.Append(ls.v.Elem(), ls.conv.GoValueOf(v)))
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}
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func (ls listReflect) Truncate(i int) {
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ls.v.Elem().Set(ls.v.Elem().Slice(0, i))
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}
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func (ls listReflect) NewMessage() pref.Message {
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return ls.conv.MessageType.New()
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}
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func (ls listReflect) ProtoUnwrap() interface{} {
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return ls.v.Interface()
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}
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