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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.
package impl
import (
"reflect"
pref "google.golang.org/protobuf/reflect/protoreflect"
)
// weakFields adds methods to the exported WeakFields type for internal use.
//
// The exported type is an alias to an unnamed type, so methods can't be
// defined directly on it.
type weakFields WeakFields
func (w *weakFields) get(num pref.FieldNumber) (_ pref.ProtoMessage, ok bool) {
if *w == nil {
return nil, false
}
m, ok := (*w)[int32(num)]
if !ok {
return nil, false
}
// As a legacy quirk, consider a typed nil to be unset.
//
// TODO: Consider fixing the generated set methods to clear the field
// when provided with a typed nil.
if v := reflect.ValueOf(m); v.Kind() == reflect.Ptr && v.IsNil() {
return nil, false
}
return Export{}.ProtoMessageV2Of(m), true
}
func (w *weakFields) set(num pref.FieldNumber, m pref.ProtoMessage) {
if *w == nil {
*w = make(weakFields)
}
(*w)[int32(num)] = Export{}.ProtoMessageV1Of(m)
}
func (w *weakFields) clear(num pref.FieldNumber) {
delete(*w, int32(num))
}
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