gtsocial-umbx

Unnamed repository; edit this file 'description' to name the repository.
Log | Files | Refs | README | LICENSE

reset.go (1018B)

      1 // Copyright 2019 The Go Authors. All rights reserved.
      2 // Use of this source code is governed by a BSD-style
      3 // license that can be found in the LICENSE file.
      4 
      5 package proto
      6 
      7 import (
      8 	"fmt"
      9 
     10 	"google.golang.org/protobuf/reflect/protoreflect"
     11 )
     12 
     13 // Reset clears every field in the message.
     14 // The resulting message shares no observable memory with its previous state
     15 // other than the memory for the message itself.
     16 func Reset(m Message) {
     17 	if mr, ok := m.(interface{ Reset() }); ok && hasProtoMethods {
     18 		mr.Reset()
     19 		return
     20 	}
     21 	resetMessage(m.ProtoReflect())
     22 }
     23 
     24 func resetMessage(m protoreflect.Message) {
     25 	if !m.IsValid() {
     26 		panic(fmt.Sprintf("cannot reset invalid %v message", m.Descriptor().FullName()))
     27 	}
     28 
     29 	// Clear all known fields.
     30 	fds := m.Descriptor().Fields()
     31 	for i := 0; i < fds.Len(); i++ {
     32 		m.Clear(fds.Get(i))
     33 	}
     34 
     35 	// Clear extension fields.
     36 	m.Range(func(fd protoreflect.FieldDescriptor, _ protoreflect.Value) bool {
     37 		m.Clear(fd)
     38 		return true
     39 	})
     40 
     41 	// Clear unknown fields.
     42 	m.SetUnknown(nil)
     43 }