mirror of
https://codeberg.org/superseriousbusiness/gotosocial.git
synced 2024-12-21 16:34:26 +03:00
59 lines
1.6 KiB
Go
59 lines
1.6 KiB
Go
|
// 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 proto
|
||
|
|
|
||
|
|
import (
|
||
|
|
"google.golang.org/protobuf/reflect/protoreflect"
|
||
|
|
)
|
||
|
|
|
||
|
|
// DiscardUnknown recursively discards all unknown fields from this message
|
||
|
|
// and all embedded messages.
|
||
|
|
//
|
||
|
|
// When unmarshaling a message with unrecognized fields, the tags and values
|
||
|
|
// of such fields are preserved in the Message. This allows a later call to
|
||
|
|
// marshal to be able to produce a message that continues to have those
|
||
|
|
// unrecognized fields. To avoid this, DiscardUnknown is used to
|
||
|
|
// explicitly clear the unknown fields after unmarshaling.
|
||
|
|
func DiscardUnknown(m Message) {
|
||
|
|
if m != nil {
|
||
|
|
discardUnknown(MessageReflect(m))
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
func discardUnknown(m protoreflect.Message) {
|
||
|
|
m.Range(func(fd protoreflect.FieldDescriptor, val protoreflect.Value) bool {
|
||
|
|
switch {
|
||
|
|
// Handle singular message.
|
||
|
|
case fd.Cardinality() != protoreflect.Repeated:
|
||
|
|
if fd.Message() != nil {
|
||
|
|
discardUnknown(m.Get(fd).Message())
|
||
|
|
}
|
||
|
|
// Handle list of messages.
|
||
|
|
case fd.IsList():
|
||
|
|
if fd.Message() != nil {
|
||
|
|
ls := m.Get(fd).List()
|
||
|
|
for i := 0; i < ls.Len(); i++ {
|
||
|
|
discardUnknown(ls.Get(i).Message())
|
||
|
|
}
|
||
|
|
}
|
||
|
|
// Handle map of messages.
|
||
|
|
case fd.IsMap():
|
||
|
|
if fd.MapValue().Message() != nil {
|
||
|
|
ms := m.Get(fd).Map()
|
||
|
|
ms.Range(func(_ protoreflect.MapKey, v protoreflect.Value) bool {
|
||
|
|
discardUnknown(v.Message())
|
||
|
|
return true
|
||
|
|
})
|
||
|
|
}
|
||
|
|
}
|
||
|
|
return true
|
||
|
|
})
|
||
|
|
|
||
|
|
// Discard unknown fields.
|
||
|
|
if len(m.GetUnknown()) > 0 {
|
||
|
|
m.SetUnknown(nil)
|
||
|
|
}
|
||
|
|
}
|