[VOL-4291] Rw-core updates for gRPC migration
Change-Id: I8d5a554409115b29318089671ca4e1ab3fa98810
diff --git a/vendor/google.golang.org/protobuf/internal/filedesc/desc.go b/vendor/google.golang.org/protobuf/internal/filedesc/desc.go
new file mode 100644
index 0000000..98ab142
--- /dev/null
+++ b/vendor/google.golang.org/protobuf/internal/filedesc/desc.go
@@ -0,0 +1,631 @@
+// 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 filedesc
+
+import (
+ "bytes"
+ "fmt"
+ "sync"
+ "sync/atomic"
+
+ "google.golang.org/protobuf/internal/descfmt"
+ "google.golang.org/protobuf/internal/descopts"
+ "google.golang.org/protobuf/internal/encoding/defval"
+ "google.golang.org/protobuf/internal/encoding/messageset"
+ "google.golang.org/protobuf/internal/genid"
+ "google.golang.org/protobuf/internal/pragma"
+ "google.golang.org/protobuf/internal/strs"
+ pref "google.golang.org/protobuf/reflect/protoreflect"
+ "google.golang.org/protobuf/reflect/protoregistry"
+)
+
+// The types in this file may have a suffix:
+// • L0: Contains fields common to all descriptors (except File) and
+// must be initialized up front.
+// • L1: Contains fields specific to a descriptor and
+// must be initialized up front.
+// • L2: Contains fields that are lazily initialized when constructing
+// from the raw file descriptor. When constructing as a literal, the L2
+// fields must be initialized up front.
+//
+// The types are exported so that packages like reflect/protodesc can
+// directly construct descriptors.
+
+type (
+ File struct {
+ fileRaw
+ L1 FileL1
+
+ once uint32 // atomically set if L2 is valid
+ mu sync.Mutex // protects L2
+ L2 *FileL2
+ }
+ FileL1 struct {
+ Syntax pref.Syntax
+ Path string
+ Package pref.FullName
+
+ Enums Enums
+ Messages Messages
+ Extensions Extensions
+ Services Services
+ }
+ FileL2 struct {
+ Options func() pref.ProtoMessage
+ Imports FileImports
+ Locations SourceLocations
+ }
+)
+
+func (fd *File) ParentFile() pref.FileDescriptor { return fd }
+func (fd *File) Parent() pref.Descriptor { return nil }
+func (fd *File) Index() int { return 0 }
+func (fd *File) Syntax() pref.Syntax { return fd.L1.Syntax }
+func (fd *File) Name() pref.Name { return fd.L1.Package.Name() }
+func (fd *File) FullName() pref.FullName { return fd.L1.Package }
+func (fd *File) IsPlaceholder() bool { return false }
+func (fd *File) Options() pref.ProtoMessage {
+ if f := fd.lazyInit().Options; f != nil {
+ return f()
+ }
+ return descopts.File
+}
+func (fd *File) Path() string { return fd.L1.Path }
+func (fd *File) Package() pref.FullName { return fd.L1.Package }
+func (fd *File) Imports() pref.FileImports { return &fd.lazyInit().Imports }
+func (fd *File) Enums() pref.EnumDescriptors { return &fd.L1.Enums }
+func (fd *File) Messages() pref.MessageDescriptors { return &fd.L1.Messages }
+func (fd *File) Extensions() pref.ExtensionDescriptors { return &fd.L1.Extensions }
+func (fd *File) Services() pref.ServiceDescriptors { return &fd.L1.Services }
+func (fd *File) SourceLocations() pref.SourceLocations { return &fd.lazyInit().Locations }
+func (fd *File) Format(s fmt.State, r rune) { descfmt.FormatDesc(s, r, fd) }
+func (fd *File) ProtoType(pref.FileDescriptor) {}
+func (fd *File) ProtoInternal(pragma.DoNotImplement) {}
+
+func (fd *File) lazyInit() *FileL2 {
+ if atomic.LoadUint32(&fd.once) == 0 {
+ fd.lazyInitOnce()
+ }
+ return fd.L2
+}
+
+func (fd *File) lazyInitOnce() {
+ fd.mu.Lock()
+ if fd.L2 == nil {
+ fd.lazyRawInit() // recursively initializes all L2 structures
+ }
+ atomic.StoreUint32(&fd.once, 1)
+ fd.mu.Unlock()
+}
+
+// GoPackagePath is a pseudo-internal API for determining the Go package path
+// that this file descriptor is declared in.
+//
+// WARNING: This method is exempt from the compatibility promise and may be
+// removed in the future without warning.
+func (fd *File) GoPackagePath() string {
+ return fd.builder.GoPackagePath
+}
+
+type (
+ Enum struct {
+ Base
+ L1 EnumL1
+ L2 *EnumL2 // protected by fileDesc.once
+ }
+ EnumL1 struct {
+ eagerValues bool // controls whether EnumL2.Values is already populated
+ }
+ EnumL2 struct {
+ Options func() pref.ProtoMessage
+ Values EnumValues
+ ReservedNames Names
+ ReservedRanges EnumRanges
+ }
+
+ EnumValue struct {
+ Base
+ L1 EnumValueL1
+ }
+ EnumValueL1 struct {
+ Options func() pref.ProtoMessage
+ Number pref.EnumNumber
+ }
+)
+
+func (ed *Enum) Options() pref.ProtoMessage {
+ if f := ed.lazyInit().Options; f != nil {
+ return f()
+ }
+ return descopts.Enum
+}
+func (ed *Enum) Values() pref.EnumValueDescriptors {
+ if ed.L1.eagerValues {
+ return &ed.L2.Values
+ }
+ return &ed.lazyInit().Values
+}
+func (ed *Enum) ReservedNames() pref.Names { return &ed.lazyInit().ReservedNames }
+func (ed *Enum) ReservedRanges() pref.EnumRanges { return &ed.lazyInit().ReservedRanges }
+func (ed *Enum) Format(s fmt.State, r rune) { descfmt.FormatDesc(s, r, ed) }
+func (ed *Enum) ProtoType(pref.EnumDescriptor) {}
+func (ed *Enum) lazyInit() *EnumL2 {
+ ed.L0.ParentFile.lazyInit() // implicitly initializes L2
+ return ed.L2
+}
+
+func (ed *EnumValue) Options() pref.ProtoMessage {
+ if f := ed.L1.Options; f != nil {
+ return f()
+ }
+ return descopts.EnumValue
+}
+func (ed *EnumValue) Number() pref.EnumNumber { return ed.L1.Number }
+func (ed *EnumValue) Format(s fmt.State, r rune) { descfmt.FormatDesc(s, r, ed) }
+func (ed *EnumValue) ProtoType(pref.EnumValueDescriptor) {}
+
+type (
+ Message struct {
+ Base
+ L1 MessageL1
+ L2 *MessageL2 // protected by fileDesc.once
+ }
+ MessageL1 struct {
+ Enums Enums
+ Messages Messages
+ Extensions Extensions
+ IsMapEntry bool // promoted from google.protobuf.MessageOptions
+ IsMessageSet bool // promoted from google.protobuf.MessageOptions
+ }
+ MessageL2 struct {
+ Options func() pref.ProtoMessage
+ Fields Fields
+ Oneofs Oneofs
+ ReservedNames Names
+ ReservedRanges FieldRanges
+ RequiredNumbers FieldNumbers // must be consistent with Fields.Cardinality
+ ExtensionRanges FieldRanges
+ ExtensionRangeOptions []func() pref.ProtoMessage // must be same length as ExtensionRanges
+ }
+
+ Field struct {
+ Base
+ L1 FieldL1
+ }
+ FieldL1 struct {
+ Options func() pref.ProtoMessage
+ Number pref.FieldNumber
+ Cardinality pref.Cardinality // must be consistent with Message.RequiredNumbers
+ Kind pref.Kind
+ StringName stringName
+ IsProto3Optional bool // promoted from google.protobuf.FieldDescriptorProto
+ IsWeak bool // promoted from google.protobuf.FieldOptions
+ HasPacked bool // promoted from google.protobuf.FieldOptions
+ IsPacked bool // promoted from google.protobuf.FieldOptions
+ HasEnforceUTF8 bool // promoted from google.protobuf.FieldOptions
+ EnforceUTF8 bool // promoted from google.protobuf.FieldOptions
+ Default defaultValue
+ ContainingOneof pref.OneofDescriptor // must be consistent with Message.Oneofs.Fields
+ Enum pref.EnumDescriptor
+ Message pref.MessageDescriptor
+ }
+
+ Oneof struct {
+ Base
+ L1 OneofL1
+ }
+ OneofL1 struct {
+ Options func() pref.ProtoMessage
+ Fields OneofFields // must be consistent with Message.Fields.ContainingOneof
+ }
+)
+
+func (md *Message) Options() pref.ProtoMessage {
+ if f := md.lazyInit().Options; f != nil {
+ return f()
+ }
+ return descopts.Message
+}
+func (md *Message) IsMapEntry() bool { return md.L1.IsMapEntry }
+func (md *Message) Fields() pref.FieldDescriptors { return &md.lazyInit().Fields }
+func (md *Message) Oneofs() pref.OneofDescriptors { return &md.lazyInit().Oneofs }
+func (md *Message) ReservedNames() pref.Names { return &md.lazyInit().ReservedNames }
+func (md *Message) ReservedRanges() pref.FieldRanges { return &md.lazyInit().ReservedRanges }
+func (md *Message) RequiredNumbers() pref.FieldNumbers { return &md.lazyInit().RequiredNumbers }
+func (md *Message) ExtensionRanges() pref.FieldRanges { return &md.lazyInit().ExtensionRanges }
+func (md *Message) ExtensionRangeOptions(i int) pref.ProtoMessage {
+ if f := md.lazyInit().ExtensionRangeOptions[i]; f != nil {
+ return f()
+ }
+ return descopts.ExtensionRange
+}
+func (md *Message) Enums() pref.EnumDescriptors { return &md.L1.Enums }
+func (md *Message) Messages() pref.MessageDescriptors { return &md.L1.Messages }
+func (md *Message) Extensions() pref.ExtensionDescriptors { return &md.L1.Extensions }
+func (md *Message) ProtoType(pref.MessageDescriptor) {}
+func (md *Message) Format(s fmt.State, r rune) { descfmt.FormatDesc(s, r, md) }
+func (md *Message) lazyInit() *MessageL2 {
+ md.L0.ParentFile.lazyInit() // implicitly initializes L2
+ return md.L2
+}
+
+// IsMessageSet is a pseudo-internal API for checking whether a message
+// should serialize in the proto1 message format.
+//
+// WARNING: This method is exempt from the compatibility promise and may be
+// removed in the future without warning.
+func (md *Message) IsMessageSet() bool {
+ return md.L1.IsMessageSet
+}
+
+func (fd *Field) Options() pref.ProtoMessage {
+ if f := fd.L1.Options; f != nil {
+ return f()
+ }
+ return descopts.Field
+}
+func (fd *Field) Number() pref.FieldNumber { return fd.L1.Number }
+func (fd *Field) Cardinality() pref.Cardinality { return fd.L1.Cardinality }
+func (fd *Field) Kind() pref.Kind { return fd.L1.Kind }
+func (fd *Field) HasJSONName() bool { return fd.L1.StringName.hasJSON }
+func (fd *Field) JSONName() string { return fd.L1.StringName.getJSON(fd) }
+func (fd *Field) TextName() string { return fd.L1.StringName.getText(fd) }
+func (fd *Field) HasPresence() bool {
+ return fd.L1.Cardinality != pref.Repeated && (fd.L0.ParentFile.L1.Syntax == pref.Proto2 || fd.L1.Message != nil || fd.L1.ContainingOneof != nil)
+}
+func (fd *Field) HasOptionalKeyword() bool {
+ return (fd.L0.ParentFile.L1.Syntax == pref.Proto2 && fd.L1.Cardinality == pref.Optional && fd.L1.ContainingOneof == nil) || fd.L1.IsProto3Optional
+}
+func (fd *Field) IsPacked() bool {
+ if !fd.L1.HasPacked && fd.L0.ParentFile.L1.Syntax != pref.Proto2 && fd.L1.Cardinality == pref.Repeated {
+ switch fd.L1.Kind {
+ case pref.StringKind, pref.BytesKind, pref.MessageKind, pref.GroupKind:
+ default:
+ return true
+ }
+ }
+ return fd.L1.IsPacked
+}
+func (fd *Field) IsExtension() bool { return false }
+func (fd *Field) IsWeak() bool { return fd.L1.IsWeak }
+func (fd *Field) IsList() bool { return fd.Cardinality() == pref.Repeated && !fd.IsMap() }
+func (fd *Field) IsMap() bool { return fd.Message() != nil && fd.Message().IsMapEntry() }
+func (fd *Field) MapKey() pref.FieldDescriptor {
+ if !fd.IsMap() {
+ return nil
+ }
+ return fd.Message().Fields().ByNumber(genid.MapEntry_Key_field_number)
+}
+func (fd *Field) MapValue() pref.FieldDescriptor {
+ if !fd.IsMap() {
+ return nil
+ }
+ return fd.Message().Fields().ByNumber(genid.MapEntry_Value_field_number)
+}
+func (fd *Field) HasDefault() bool { return fd.L1.Default.has }
+func (fd *Field) Default() pref.Value { return fd.L1.Default.get(fd) }
+func (fd *Field) DefaultEnumValue() pref.EnumValueDescriptor { return fd.L1.Default.enum }
+func (fd *Field) ContainingOneof() pref.OneofDescriptor { return fd.L1.ContainingOneof }
+func (fd *Field) ContainingMessage() pref.MessageDescriptor {
+ return fd.L0.Parent.(pref.MessageDescriptor)
+}
+func (fd *Field) Enum() pref.EnumDescriptor {
+ return fd.L1.Enum
+}
+func (fd *Field) Message() pref.MessageDescriptor {
+ if fd.L1.IsWeak {
+ if d, _ := protoregistry.GlobalFiles.FindDescriptorByName(fd.L1.Message.FullName()); d != nil {
+ return d.(pref.MessageDescriptor)
+ }
+ }
+ return fd.L1.Message
+}
+func (fd *Field) Format(s fmt.State, r rune) { descfmt.FormatDesc(s, r, fd) }
+func (fd *Field) ProtoType(pref.FieldDescriptor) {}
+
+// EnforceUTF8 is a pseudo-internal API to determine whether to enforce UTF-8
+// validation for the string field. This exists for Google-internal use only
+// since proto3 did not enforce UTF-8 validity prior to the open-source release.
+// If this method does not exist, the default is to enforce valid UTF-8.
+//
+// WARNING: This method is exempt from the compatibility promise and may be
+// removed in the future without warning.
+func (fd *Field) EnforceUTF8() bool {
+ if fd.L1.HasEnforceUTF8 {
+ return fd.L1.EnforceUTF8
+ }
+ return fd.L0.ParentFile.L1.Syntax == pref.Proto3
+}
+
+func (od *Oneof) IsSynthetic() bool {
+ return od.L0.ParentFile.L1.Syntax == pref.Proto3 && len(od.L1.Fields.List) == 1 && od.L1.Fields.List[0].HasOptionalKeyword()
+}
+func (od *Oneof) Options() pref.ProtoMessage {
+ if f := od.L1.Options; f != nil {
+ return f()
+ }
+ return descopts.Oneof
+}
+func (od *Oneof) Fields() pref.FieldDescriptors { return &od.L1.Fields }
+func (od *Oneof) Format(s fmt.State, r rune) { descfmt.FormatDesc(s, r, od) }
+func (od *Oneof) ProtoType(pref.OneofDescriptor) {}
+
+type (
+ Extension struct {
+ Base
+ L1 ExtensionL1
+ L2 *ExtensionL2 // protected by fileDesc.once
+ }
+ ExtensionL1 struct {
+ Number pref.FieldNumber
+ Extendee pref.MessageDescriptor
+ Cardinality pref.Cardinality
+ Kind pref.Kind
+ }
+ ExtensionL2 struct {
+ Options func() pref.ProtoMessage
+ StringName stringName
+ IsProto3Optional bool // promoted from google.protobuf.FieldDescriptorProto
+ IsPacked bool // promoted from google.protobuf.FieldOptions
+ Default defaultValue
+ Enum pref.EnumDescriptor
+ Message pref.MessageDescriptor
+ }
+)
+
+func (xd *Extension) Options() pref.ProtoMessage {
+ if f := xd.lazyInit().Options; f != nil {
+ return f()
+ }
+ return descopts.Field
+}
+func (xd *Extension) Number() pref.FieldNumber { return xd.L1.Number }
+func (xd *Extension) Cardinality() pref.Cardinality { return xd.L1.Cardinality }
+func (xd *Extension) Kind() pref.Kind { return xd.L1.Kind }
+func (xd *Extension) HasJSONName() bool { return xd.lazyInit().StringName.hasJSON }
+func (xd *Extension) JSONName() string { return xd.lazyInit().StringName.getJSON(xd) }
+func (xd *Extension) TextName() string { return xd.lazyInit().StringName.getText(xd) }
+func (xd *Extension) HasPresence() bool { return xd.L1.Cardinality != pref.Repeated }
+func (xd *Extension) HasOptionalKeyword() bool {
+ return (xd.L0.ParentFile.L1.Syntax == pref.Proto2 && xd.L1.Cardinality == pref.Optional) || xd.lazyInit().IsProto3Optional
+}
+func (xd *Extension) IsPacked() bool { return xd.lazyInit().IsPacked }
+func (xd *Extension) IsExtension() bool { return true }
+func (xd *Extension) IsWeak() bool { return false }
+func (xd *Extension) IsList() bool { return xd.Cardinality() == pref.Repeated }
+func (xd *Extension) IsMap() bool { return false }
+func (xd *Extension) MapKey() pref.FieldDescriptor { return nil }
+func (xd *Extension) MapValue() pref.FieldDescriptor { return nil }
+func (xd *Extension) HasDefault() bool { return xd.lazyInit().Default.has }
+func (xd *Extension) Default() pref.Value { return xd.lazyInit().Default.get(xd) }
+func (xd *Extension) DefaultEnumValue() pref.EnumValueDescriptor { return xd.lazyInit().Default.enum }
+func (xd *Extension) ContainingOneof() pref.OneofDescriptor { return nil }
+func (xd *Extension) ContainingMessage() pref.MessageDescriptor { return xd.L1.Extendee }
+func (xd *Extension) Enum() pref.EnumDescriptor { return xd.lazyInit().Enum }
+func (xd *Extension) Message() pref.MessageDescriptor { return xd.lazyInit().Message }
+func (xd *Extension) Format(s fmt.State, r rune) { descfmt.FormatDesc(s, r, xd) }
+func (xd *Extension) ProtoType(pref.FieldDescriptor) {}
+func (xd *Extension) ProtoInternal(pragma.DoNotImplement) {}
+func (xd *Extension) lazyInit() *ExtensionL2 {
+ xd.L0.ParentFile.lazyInit() // implicitly initializes L2
+ return xd.L2
+}
+
+type (
+ Service struct {
+ Base
+ L1 ServiceL1
+ L2 *ServiceL2 // protected by fileDesc.once
+ }
+ ServiceL1 struct{}
+ ServiceL2 struct {
+ Options func() pref.ProtoMessage
+ Methods Methods
+ }
+
+ Method struct {
+ Base
+ L1 MethodL1
+ }
+ MethodL1 struct {
+ Options func() pref.ProtoMessage
+ Input pref.MessageDescriptor
+ Output pref.MessageDescriptor
+ IsStreamingClient bool
+ IsStreamingServer bool
+ }
+)
+
+func (sd *Service) Options() pref.ProtoMessage {
+ if f := sd.lazyInit().Options; f != nil {
+ return f()
+ }
+ return descopts.Service
+}
+func (sd *Service) Methods() pref.MethodDescriptors { return &sd.lazyInit().Methods }
+func (sd *Service) Format(s fmt.State, r rune) { descfmt.FormatDesc(s, r, sd) }
+func (sd *Service) ProtoType(pref.ServiceDescriptor) {}
+func (sd *Service) ProtoInternal(pragma.DoNotImplement) {}
+func (sd *Service) lazyInit() *ServiceL2 {
+ sd.L0.ParentFile.lazyInit() // implicitly initializes L2
+ return sd.L2
+}
+
+func (md *Method) Options() pref.ProtoMessage {
+ if f := md.L1.Options; f != nil {
+ return f()
+ }
+ return descopts.Method
+}
+func (md *Method) Input() pref.MessageDescriptor { return md.L1.Input }
+func (md *Method) Output() pref.MessageDescriptor { return md.L1.Output }
+func (md *Method) IsStreamingClient() bool { return md.L1.IsStreamingClient }
+func (md *Method) IsStreamingServer() bool { return md.L1.IsStreamingServer }
+func (md *Method) Format(s fmt.State, r rune) { descfmt.FormatDesc(s, r, md) }
+func (md *Method) ProtoType(pref.MethodDescriptor) {}
+func (md *Method) ProtoInternal(pragma.DoNotImplement) {}
+
+// Surrogate files are can be used to create standalone descriptors
+// where the syntax is only information derived from the parent file.
+var (
+ SurrogateProto2 = &File{L1: FileL1{Syntax: pref.Proto2}, L2: &FileL2{}}
+ SurrogateProto3 = &File{L1: FileL1{Syntax: pref.Proto3}, L2: &FileL2{}}
+)
+
+type (
+ Base struct {
+ L0 BaseL0
+ }
+ BaseL0 struct {
+ FullName pref.FullName // must be populated
+ ParentFile *File // must be populated
+ Parent pref.Descriptor
+ Index int
+ }
+)
+
+func (d *Base) Name() pref.Name { return d.L0.FullName.Name() }
+func (d *Base) FullName() pref.FullName { return d.L0.FullName }
+func (d *Base) ParentFile() pref.FileDescriptor {
+ if d.L0.ParentFile == SurrogateProto2 || d.L0.ParentFile == SurrogateProto3 {
+ return nil // surrogate files are not real parents
+ }
+ return d.L0.ParentFile
+}
+func (d *Base) Parent() pref.Descriptor { return d.L0.Parent }
+func (d *Base) Index() int { return d.L0.Index }
+func (d *Base) Syntax() pref.Syntax { return d.L0.ParentFile.Syntax() }
+func (d *Base) IsPlaceholder() bool { return false }
+func (d *Base) ProtoInternal(pragma.DoNotImplement) {}
+
+type stringName struct {
+ hasJSON bool
+ once sync.Once
+ nameJSON string
+ nameText string
+}
+
+// InitJSON initializes the name. It is exported for use by other internal packages.
+func (s *stringName) InitJSON(name string) {
+ s.hasJSON = true
+ s.nameJSON = name
+}
+
+func (s *stringName) lazyInit(fd pref.FieldDescriptor) *stringName {
+ s.once.Do(func() {
+ if fd.IsExtension() {
+ // For extensions, JSON and text are formatted the same way.
+ var name string
+ if messageset.IsMessageSetExtension(fd) {
+ name = string("[" + fd.FullName().Parent() + "]")
+ } else {
+ name = string("[" + fd.FullName() + "]")
+ }
+ s.nameJSON = name
+ s.nameText = name
+ } else {
+ // Format the JSON name.
+ if !s.hasJSON {
+ s.nameJSON = strs.JSONCamelCase(string(fd.Name()))
+ }
+
+ // Format the text name.
+ s.nameText = string(fd.Name())
+ if fd.Kind() == pref.GroupKind {
+ s.nameText = string(fd.Message().Name())
+ }
+ }
+ })
+ return s
+}
+
+func (s *stringName) getJSON(fd pref.FieldDescriptor) string { return s.lazyInit(fd).nameJSON }
+func (s *stringName) getText(fd pref.FieldDescriptor) string { return s.lazyInit(fd).nameText }
+
+func DefaultValue(v pref.Value, ev pref.EnumValueDescriptor) defaultValue {
+ dv := defaultValue{has: v.IsValid(), val: v, enum: ev}
+ if b, ok := v.Interface().([]byte); ok {
+ // Store a copy of the default bytes, so that we can detect
+ // accidental mutations of the original value.
+ dv.bytes = append([]byte(nil), b...)
+ }
+ return dv
+}
+
+func unmarshalDefault(b []byte, k pref.Kind, pf *File, ed pref.EnumDescriptor) defaultValue {
+ var evs pref.EnumValueDescriptors
+ if k == pref.EnumKind {
+ // If the enum is declared within the same file, be careful not to
+ // blindly call the Values method, lest we bind ourselves in a deadlock.
+ if e, ok := ed.(*Enum); ok && e.L0.ParentFile == pf {
+ evs = &e.L2.Values
+ } else {
+ evs = ed.Values()
+ }
+
+ // If we are unable to resolve the enum dependency, use a placeholder
+ // enum value since we will not be able to parse the default value.
+ if ed.IsPlaceholder() && pref.Name(b).IsValid() {
+ v := pref.ValueOfEnum(0)
+ ev := PlaceholderEnumValue(ed.FullName().Parent().Append(pref.Name(b)))
+ return DefaultValue(v, ev)
+ }
+ }
+
+ v, ev, err := defval.Unmarshal(string(b), k, evs, defval.Descriptor)
+ if err != nil {
+ panic(err)
+ }
+ return DefaultValue(v, ev)
+}
+
+type defaultValue struct {
+ has bool
+ val pref.Value
+ enum pref.EnumValueDescriptor
+ bytes []byte
+}
+
+func (dv *defaultValue) get(fd pref.FieldDescriptor) pref.Value {
+ // Return the zero value as the default if unpopulated.
+ if !dv.has {
+ if fd.Cardinality() == pref.Repeated {
+ return pref.Value{}
+ }
+ switch fd.Kind() {
+ case pref.BoolKind:
+ return pref.ValueOfBool(false)
+ case pref.Int32Kind, pref.Sint32Kind, pref.Sfixed32Kind:
+ return pref.ValueOfInt32(0)
+ case pref.Int64Kind, pref.Sint64Kind, pref.Sfixed64Kind:
+ return pref.ValueOfInt64(0)
+ case pref.Uint32Kind, pref.Fixed32Kind:
+ return pref.ValueOfUint32(0)
+ case pref.Uint64Kind, pref.Fixed64Kind:
+ return pref.ValueOfUint64(0)
+ case pref.FloatKind:
+ return pref.ValueOfFloat32(0)
+ case pref.DoubleKind:
+ return pref.ValueOfFloat64(0)
+ case pref.StringKind:
+ return pref.ValueOfString("")
+ case pref.BytesKind:
+ return pref.ValueOfBytes(nil)
+ case pref.EnumKind:
+ if evs := fd.Enum().Values(); evs.Len() > 0 {
+ return pref.ValueOfEnum(evs.Get(0).Number())
+ }
+ return pref.ValueOfEnum(0)
+ }
+ }
+
+ if len(dv.bytes) > 0 && !bytes.Equal(dv.bytes, dv.val.Bytes()) {
+ // TODO: Avoid panic if we're running with the race detector
+ // and instead spawn a goroutine that periodically resets
+ // this value back to the original to induce a race.
+ panic(fmt.Sprintf("detected mutation on the default bytes for %v", fd.FullName()))
+ }
+ return dv.val
+}