blob: 73f2431f1a23e9ba2c2cdaec581caae8e189a673 [file] [log] [blame]
// 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 (
// HasExtension reports whether an extension field is populated.
// It panics if ext does not extend m.
func HasExtension(m Message, ext protoreflect.ExtensionType) bool {
return m.ProtoReflect().Has(ext.TypeDescriptor())
// ClearExtension clears an extension field such that subsequent
// HasExtension calls return false.
// It panics if ext does not extend m.
func ClearExtension(m Message, ext protoreflect.ExtensionType) {
// GetExtension retrieves the value for an extension field.
// If the field is unpopulated, it returns the default value for
// scalars and an immutable, empty value for lists, maps, or messages.
// It panics if ext does not extend m.
func GetExtension(m Message, ext protoreflect.ExtensionType) interface{} {
return ext.InterfaceOf(m.ProtoReflect().Get(ext.TypeDescriptor()))
// SetExtension stores the value of an extension field.
// It panics if ext does not extend m or if value type is invalid for the field.
func SetExtension(m Message, ext protoreflect.ExtensionType, value interface{}) {
m.ProtoReflect().Set(ext.TypeDescriptor(), ext.ValueOf(value))