[VOL-4291] Rw-core updates for gRPC migration
Change-Id: I8d5a554409115b29318089671ca4e1ab3fa98810
diff --git a/vendor/google.golang.org/protobuf/internal/filedesc/desc_init.go b/vendor/google.golang.org/protobuf/internal/filedesc/desc_init.go
new file mode 100644
index 0000000..66e1fee
--- /dev/null
+++ b/vendor/google.golang.org/protobuf/internal/filedesc/desc_init.go
@@ -0,0 +1,471 @@
+// 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 (
+ "sync"
+
+ "google.golang.org/protobuf/encoding/protowire"
+ "google.golang.org/protobuf/internal/genid"
+ "google.golang.org/protobuf/internal/strs"
+ pref "google.golang.org/protobuf/reflect/protoreflect"
+)
+
+// fileRaw is a data struct used when initializing a file descriptor from
+// a raw FileDescriptorProto.
+type fileRaw struct {
+ builder Builder
+ allEnums []Enum
+ allMessages []Message
+ allExtensions []Extension
+ allServices []Service
+}
+
+func newRawFile(db Builder) *File {
+ fd := &File{fileRaw: fileRaw{builder: db}}
+ fd.initDecls(db.NumEnums, db.NumMessages, db.NumExtensions, db.NumServices)
+ fd.unmarshalSeed(db.RawDescriptor)
+
+ // Extended message targets are eagerly resolved since registration
+ // needs this information at program init time.
+ for i := range fd.allExtensions {
+ xd := &fd.allExtensions[i]
+ xd.L1.Extendee = fd.resolveMessageDependency(xd.L1.Extendee, listExtTargets, int32(i))
+ }
+
+ fd.checkDecls()
+ return fd
+}
+
+// initDecls pre-allocates slices for the exact number of enums, messages
+// (including map entries), extensions, and services declared in the proto file.
+// This is done to avoid regrowing the slice, which would change the address
+// for any previously seen declaration.
+//
+// The alloc methods "allocates" slices by pulling from the capacity.
+func (fd *File) initDecls(numEnums, numMessages, numExtensions, numServices int32) {
+ fd.allEnums = make([]Enum, 0, numEnums)
+ fd.allMessages = make([]Message, 0, numMessages)
+ fd.allExtensions = make([]Extension, 0, numExtensions)
+ fd.allServices = make([]Service, 0, numServices)
+}
+
+func (fd *File) allocEnums(n int) []Enum {
+ total := len(fd.allEnums)
+ es := fd.allEnums[total : total+n]
+ fd.allEnums = fd.allEnums[:total+n]
+ return es
+}
+func (fd *File) allocMessages(n int) []Message {
+ total := len(fd.allMessages)
+ ms := fd.allMessages[total : total+n]
+ fd.allMessages = fd.allMessages[:total+n]
+ return ms
+}
+func (fd *File) allocExtensions(n int) []Extension {
+ total := len(fd.allExtensions)
+ xs := fd.allExtensions[total : total+n]
+ fd.allExtensions = fd.allExtensions[:total+n]
+ return xs
+}
+func (fd *File) allocServices(n int) []Service {
+ total := len(fd.allServices)
+ xs := fd.allServices[total : total+n]
+ fd.allServices = fd.allServices[:total+n]
+ return xs
+}
+
+// checkDecls performs a sanity check that the expected number of expected
+// declarations matches the number that were found in the descriptor proto.
+func (fd *File) checkDecls() {
+ switch {
+ case len(fd.allEnums) != cap(fd.allEnums):
+ case len(fd.allMessages) != cap(fd.allMessages):
+ case len(fd.allExtensions) != cap(fd.allExtensions):
+ case len(fd.allServices) != cap(fd.allServices):
+ default:
+ return
+ }
+ panic("mismatching cardinality")
+}
+
+func (fd *File) unmarshalSeed(b []byte) {
+ sb := getBuilder()
+ defer putBuilder(sb)
+
+ var prevField pref.FieldNumber
+ var numEnums, numMessages, numExtensions, numServices int
+ var posEnums, posMessages, posExtensions, posServices int
+ b0 := b
+ for len(b) > 0 {
+ num, typ, n := protowire.ConsumeTag(b)
+ b = b[n:]
+ switch typ {
+ case protowire.BytesType:
+ v, m := protowire.ConsumeBytes(b)
+ b = b[m:]
+ switch num {
+ case genid.FileDescriptorProto_Syntax_field_number:
+ switch string(v) {
+ case "proto2":
+ fd.L1.Syntax = pref.Proto2
+ case "proto3":
+ fd.L1.Syntax = pref.Proto3
+ default:
+ panic("invalid syntax")
+ }
+ case genid.FileDescriptorProto_Name_field_number:
+ fd.L1.Path = sb.MakeString(v)
+ case genid.FileDescriptorProto_Package_field_number:
+ fd.L1.Package = pref.FullName(sb.MakeString(v))
+ case genid.FileDescriptorProto_EnumType_field_number:
+ if prevField != genid.FileDescriptorProto_EnumType_field_number {
+ if numEnums > 0 {
+ panic("non-contiguous repeated field")
+ }
+ posEnums = len(b0) - len(b) - n - m
+ }
+ numEnums++
+ case genid.FileDescriptorProto_MessageType_field_number:
+ if prevField != genid.FileDescriptorProto_MessageType_field_number {
+ if numMessages > 0 {
+ panic("non-contiguous repeated field")
+ }
+ posMessages = len(b0) - len(b) - n - m
+ }
+ numMessages++
+ case genid.FileDescriptorProto_Extension_field_number:
+ if prevField != genid.FileDescriptorProto_Extension_field_number {
+ if numExtensions > 0 {
+ panic("non-contiguous repeated field")
+ }
+ posExtensions = len(b0) - len(b) - n - m
+ }
+ numExtensions++
+ case genid.FileDescriptorProto_Service_field_number:
+ if prevField != genid.FileDescriptorProto_Service_field_number {
+ if numServices > 0 {
+ panic("non-contiguous repeated field")
+ }
+ posServices = len(b0) - len(b) - n - m
+ }
+ numServices++
+ }
+ prevField = num
+ default:
+ m := protowire.ConsumeFieldValue(num, typ, b)
+ b = b[m:]
+ prevField = -1 // ignore known field numbers of unknown wire type
+ }
+ }
+
+ // If syntax is missing, it is assumed to be proto2.
+ if fd.L1.Syntax == 0 {
+ fd.L1.Syntax = pref.Proto2
+ }
+
+ // Must allocate all declarations before parsing each descriptor type
+ // to ensure we handled all descriptors in "flattened ordering".
+ if numEnums > 0 {
+ fd.L1.Enums.List = fd.allocEnums(numEnums)
+ }
+ if numMessages > 0 {
+ fd.L1.Messages.List = fd.allocMessages(numMessages)
+ }
+ if numExtensions > 0 {
+ fd.L1.Extensions.List = fd.allocExtensions(numExtensions)
+ }
+ if numServices > 0 {
+ fd.L1.Services.List = fd.allocServices(numServices)
+ }
+
+ if numEnums > 0 {
+ b := b0[posEnums:]
+ for i := range fd.L1.Enums.List {
+ _, n := protowire.ConsumeVarint(b)
+ v, m := protowire.ConsumeBytes(b[n:])
+ fd.L1.Enums.List[i].unmarshalSeed(v, sb, fd, fd, i)
+ b = b[n+m:]
+ }
+ }
+ if numMessages > 0 {
+ b := b0[posMessages:]
+ for i := range fd.L1.Messages.List {
+ _, n := protowire.ConsumeVarint(b)
+ v, m := protowire.ConsumeBytes(b[n:])
+ fd.L1.Messages.List[i].unmarshalSeed(v, sb, fd, fd, i)
+ b = b[n+m:]
+ }
+ }
+ if numExtensions > 0 {
+ b := b0[posExtensions:]
+ for i := range fd.L1.Extensions.List {
+ _, n := protowire.ConsumeVarint(b)
+ v, m := protowire.ConsumeBytes(b[n:])
+ fd.L1.Extensions.List[i].unmarshalSeed(v, sb, fd, fd, i)
+ b = b[n+m:]
+ }
+ }
+ if numServices > 0 {
+ b := b0[posServices:]
+ for i := range fd.L1.Services.List {
+ _, n := protowire.ConsumeVarint(b)
+ v, m := protowire.ConsumeBytes(b[n:])
+ fd.L1.Services.List[i].unmarshalSeed(v, sb, fd, fd, i)
+ b = b[n+m:]
+ }
+ }
+}
+
+func (ed *Enum) unmarshalSeed(b []byte, sb *strs.Builder, pf *File, pd pref.Descriptor, i int) {
+ ed.L0.ParentFile = pf
+ ed.L0.Parent = pd
+ ed.L0.Index = i
+
+ var numValues int
+ for b := b; len(b) > 0; {
+ num, typ, n := protowire.ConsumeTag(b)
+ b = b[n:]
+ switch typ {
+ case protowire.BytesType:
+ v, m := protowire.ConsumeBytes(b)
+ b = b[m:]
+ switch num {
+ case genid.EnumDescriptorProto_Name_field_number:
+ ed.L0.FullName = appendFullName(sb, pd.FullName(), v)
+ case genid.EnumDescriptorProto_Value_field_number:
+ numValues++
+ }
+ default:
+ m := protowire.ConsumeFieldValue(num, typ, b)
+ b = b[m:]
+ }
+ }
+
+ // Only construct enum value descriptors for top-level enums since
+ // they are needed for registration.
+ if pd != pf {
+ return
+ }
+ ed.L1.eagerValues = true
+ ed.L2 = new(EnumL2)
+ ed.L2.Values.List = make([]EnumValue, numValues)
+ for i := 0; len(b) > 0; {
+ num, typ, n := protowire.ConsumeTag(b)
+ b = b[n:]
+ switch typ {
+ case protowire.BytesType:
+ v, m := protowire.ConsumeBytes(b)
+ b = b[m:]
+ switch num {
+ case genid.EnumDescriptorProto_Value_field_number:
+ ed.L2.Values.List[i].unmarshalFull(v, sb, pf, ed, i)
+ i++
+ }
+ default:
+ m := protowire.ConsumeFieldValue(num, typ, b)
+ b = b[m:]
+ }
+ }
+}
+
+func (md *Message) unmarshalSeed(b []byte, sb *strs.Builder, pf *File, pd pref.Descriptor, i int) {
+ md.L0.ParentFile = pf
+ md.L0.Parent = pd
+ md.L0.Index = i
+
+ var prevField pref.FieldNumber
+ var numEnums, numMessages, numExtensions int
+ var posEnums, posMessages, posExtensions int
+ b0 := b
+ for len(b) > 0 {
+ num, typ, n := protowire.ConsumeTag(b)
+ b = b[n:]
+ switch typ {
+ case protowire.BytesType:
+ v, m := protowire.ConsumeBytes(b)
+ b = b[m:]
+ switch num {
+ case genid.DescriptorProto_Name_field_number:
+ md.L0.FullName = appendFullName(sb, pd.FullName(), v)
+ case genid.DescriptorProto_EnumType_field_number:
+ if prevField != genid.DescriptorProto_EnumType_field_number {
+ if numEnums > 0 {
+ panic("non-contiguous repeated field")
+ }
+ posEnums = len(b0) - len(b) - n - m
+ }
+ numEnums++
+ case genid.DescriptorProto_NestedType_field_number:
+ if prevField != genid.DescriptorProto_NestedType_field_number {
+ if numMessages > 0 {
+ panic("non-contiguous repeated field")
+ }
+ posMessages = len(b0) - len(b) - n - m
+ }
+ numMessages++
+ case genid.DescriptorProto_Extension_field_number:
+ if prevField != genid.DescriptorProto_Extension_field_number {
+ if numExtensions > 0 {
+ panic("non-contiguous repeated field")
+ }
+ posExtensions = len(b0) - len(b) - n - m
+ }
+ numExtensions++
+ case genid.DescriptorProto_Options_field_number:
+ md.unmarshalSeedOptions(v)
+ }
+ prevField = num
+ default:
+ m := protowire.ConsumeFieldValue(num, typ, b)
+ b = b[m:]
+ prevField = -1 // ignore known field numbers of unknown wire type
+ }
+ }
+
+ // Must allocate all declarations before parsing each descriptor type
+ // to ensure we handled all descriptors in "flattened ordering".
+ if numEnums > 0 {
+ md.L1.Enums.List = pf.allocEnums(numEnums)
+ }
+ if numMessages > 0 {
+ md.L1.Messages.List = pf.allocMessages(numMessages)
+ }
+ if numExtensions > 0 {
+ md.L1.Extensions.List = pf.allocExtensions(numExtensions)
+ }
+
+ if numEnums > 0 {
+ b := b0[posEnums:]
+ for i := range md.L1.Enums.List {
+ _, n := protowire.ConsumeVarint(b)
+ v, m := protowire.ConsumeBytes(b[n:])
+ md.L1.Enums.List[i].unmarshalSeed(v, sb, pf, md, i)
+ b = b[n+m:]
+ }
+ }
+ if numMessages > 0 {
+ b := b0[posMessages:]
+ for i := range md.L1.Messages.List {
+ _, n := protowire.ConsumeVarint(b)
+ v, m := protowire.ConsumeBytes(b[n:])
+ md.L1.Messages.List[i].unmarshalSeed(v, sb, pf, md, i)
+ b = b[n+m:]
+ }
+ }
+ if numExtensions > 0 {
+ b := b0[posExtensions:]
+ for i := range md.L1.Extensions.List {
+ _, n := protowire.ConsumeVarint(b)
+ v, m := protowire.ConsumeBytes(b[n:])
+ md.L1.Extensions.List[i].unmarshalSeed(v, sb, pf, md, i)
+ b = b[n+m:]
+ }
+ }
+}
+
+func (md *Message) unmarshalSeedOptions(b []byte) {
+ for len(b) > 0 {
+ num, typ, n := protowire.ConsumeTag(b)
+ b = b[n:]
+ switch typ {
+ case protowire.VarintType:
+ v, m := protowire.ConsumeVarint(b)
+ b = b[m:]
+ switch num {
+ case genid.MessageOptions_MapEntry_field_number:
+ md.L1.IsMapEntry = protowire.DecodeBool(v)
+ case genid.MessageOptions_MessageSetWireFormat_field_number:
+ md.L1.IsMessageSet = protowire.DecodeBool(v)
+ }
+ default:
+ m := protowire.ConsumeFieldValue(num, typ, b)
+ b = b[m:]
+ }
+ }
+}
+
+func (xd *Extension) unmarshalSeed(b []byte, sb *strs.Builder, pf *File, pd pref.Descriptor, i int) {
+ xd.L0.ParentFile = pf
+ xd.L0.Parent = pd
+ xd.L0.Index = i
+
+ for len(b) > 0 {
+ num, typ, n := protowire.ConsumeTag(b)
+ b = b[n:]
+ switch typ {
+ case protowire.VarintType:
+ v, m := protowire.ConsumeVarint(b)
+ b = b[m:]
+ switch num {
+ case genid.FieldDescriptorProto_Number_field_number:
+ xd.L1.Number = pref.FieldNumber(v)
+ case genid.FieldDescriptorProto_Label_field_number:
+ xd.L1.Cardinality = pref.Cardinality(v)
+ case genid.FieldDescriptorProto_Type_field_number:
+ xd.L1.Kind = pref.Kind(v)
+ }
+ case protowire.BytesType:
+ v, m := protowire.ConsumeBytes(b)
+ b = b[m:]
+ switch num {
+ case genid.FieldDescriptorProto_Name_field_number:
+ xd.L0.FullName = appendFullName(sb, pd.FullName(), v)
+ case genid.FieldDescriptorProto_Extendee_field_number:
+ xd.L1.Extendee = PlaceholderMessage(makeFullName(sb, v))
+ }
+ default:
+ m := protowire.ConsumeFieldValue(num, typ, b)
+ b = b[m:]
+ }
+ }
+}
+
+func (sd *Service) unmarshalSeed(b []byte, sb *strs.Builder, pf *File, pd pref.Descriptor, i int) {
+ sd.L0.ParentFile = pf
+ sd.L0.Parent = pd
+ sd.L0.Index = i
+
+ for len(b) > 0 {
+ num, typ, n := protowire.ConsumeTag(b)
+ b = b[n:]
+ switch typ {
+ case protowire.BytesType:
+ v, m := protowire.ConsumeBytes(b)
+ b = b[m:]
+ switch num {
+ case genid.ServiceDescriptorProto_Name_field_number:
+ sd.L0.FullName = appendFullName(sb, pd.FullName(), v)
+ }
+ default:
+ m := protowire.ConsumeFieldValue(num, typ, b)
+ b = b[m:]
+ }
+ }
+}
+
+var nameBuilderPool = sync.Pool{
+ New: func() interface{} { return new(strs.Builder) },
+}
+
+func getBuilder() *strs.Builder {
+ return nameBuilderPool.Get().(*strs.Builder)
+}
+func putBuilder(b *strs.Builder) {
+ nameBuilderPool.Put(b)
+}
+
+// makeFullName converts b to a protoreflect.FullName,
+// where b must start with a leading dot.
+func makeFullName(sb *strs.Builder, b []byte) pref.FullName {
+ if len(b) == 0 || b[0] != '.' {
+ panic("name reference must be fully qualified")
+ }
+ return pref.FullName(sb.MakeString(b[1:]))
+}
+
+func appendFullName(sb *strs.Builder, prefix pref.FullName, suffix []byte) pref.FullName {
+ return sb.AppendFullName(prefix, pref.Name(strs.UnsafeString(suffix)))
+}