[VOL-4291] Rw-core updates for gRPC migration
Change-Id: I8d5a554409115b29318089671ca4e1ab3fa98810
diff --git a/vendor/google.golang.org/protobuf/proto/decode.go b/vendor/google.golang.org/protobuf/proto/decode.go
new file mode 100644
index 0000000..49f9b8c
--- /dev/null
+++ b/vendor/google.golang.org/protobuf/proto/decode.go
@@ -0,0 +1,278 @@
+// Copyright 2018 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/encoding/protowire"
+ "google.golang.org/protobuf/internal/encoding/messageset"
+ "google.golang.org/protobuf/internal/errors"
+ "google.golang.org/protobuf/internal/flags"
+ "google.golang.org/protobuf/internal/genid"
+ "google.golang.org/protobuf/internal/pragma"
+ "google.golang.org/protobuf/reflect/protoreflect"
+ "google.golang.org/protobuf/reflect/protoregistry"
+ "google.golang.org/protobuf/runtime/protoiface"
+)
+
+// UnmarshalOptions configures the unmarshaler.
+//
+// Example usage:
+// err := UnmarshalOptions{DiscardUnknown: true}.Unmarshal(b, m)
+type UnmarshalOptions struct {
+ pragma.NoUnkeyedLiterals
+
+ // Merge merges the input into the destination message.
+ // The default behavior is to always reset the message before unmarshaling,
+ // unless Merge is specified.
+ Merge bool
+
+ // AllowPartial accepts input for messages that will result in missing
+ // required fields. If AllowPartial is false (the default), Unmarshal will
+ // return an error if there are any missing required fields.
+ AllowPartial bool
+
+ // If DiscardUnknown is set, unknown fields are ignored.
+ DiscardUnknown bool
+
+ // Resolver is used for looking up types when unmarshaling extension fields.
+ // If nil, this defaults to using protoregistry.GlobalTypes.
+ Resolver interface {
+ FindExtensionByName(field protoreflect.FullName) (protoreflect.ExtensionType, error)
+ FindExtensionByNumber(message protoreflect.FullName, field protoreflect.FieldNumber) (protoreflect.ExtensionType, error)
+ }
+}
+
+// Unmarshal parses the wire-format message in b and places the result in m.
+// The provided message must be mutable (e.g., a non-nil pointer to a message).
+func Unmarshal(b []byte, m Message) error {
+ _, err := UnmarshalOptions{}.unmarshal(b, m.ProtoReflect())
+ return err
+}
+
+// Unmarshal parses the wire-format message in b and places the result in m.
+// The provided message must be mutable (e.g., a non-nil pointer to a message).
+func (o UnmarshalOptions) Unmarshal(b []byte, m Message) error {
+ _, err := o.unmarshal(b, m.ProtoReflect())
+ return err
+}
+
+// UnmarshalState parses a wire-format message and places the result in m.
+//
+// This method permits fine-grained control over the unmarshaler.
+// Most users should use Unmarshal instead.
+func (o UnmarshalOptions) UnmarshalState(in protoiface.UnmarshalInput) (protoiface.UnmarshalOutput, error) {
+ return o.unmarshal(in.Buf, in.Message)
+}
+
+// unmarshal is a centralized function that all unmarshal operations go through.
+// For profiling purposes, avoid changing the name of this function or
+// introducing other code paths for unmarshal that do not go through this.
+func (o UnmarshalOptions) unmarshal(b []byte, m protoreflect.Message) (out protoiface.UnmarshalOutput, err error) {
+ if o.Resolver == nil {
+ o.Resolver = protoregistry.GlobalTypes
+ }
+ if !o.Merge {
+ Reset(m.Interface())
+ }
+ allowPartial := o.AllowPartial
+ o.Merge = true
+ o.AllowPartial = true
+ methods := protoMethods(m)
+ if methods != nil && methods.Unmarshal != nil &&
+ !(o.DiscardUnknown && methods.Flags&protoiface.SupportUnmarshalDiscardUnknown == 0) {
+ in := protoiface.UnmarshalInput{
+ Message: m,
+ Buf: b,
+ Resolver: o.Resolver,
+ }
+ if o.DiscardUnknown {
+ in.Flags |= protoiface.UnmarshalDiscardUnknown
+ }
+ out, err = methods.Unmarshal(in)
+ } else {
+ err = o.unmarshalMessageSlow(b, m)
+ }
+ if err != nil {
+ return out, err
+ }
+ if allowPartial || (out.Flags&protoiface.UnmarshalInitialized != 0) {
+ return out, nil
+ }
+ return out, checkInitialized(m)
+}
+
+func (o UnmarshalOptions) unmarshalMessage(b []byte, m protoreflect.Message) error {
+ _, err := o.unmarshal(b, m)
+ return err
+}
+
+func (o UnmarshalOptions) unmarshalMessageSlow(b []byte, m protoreflect.Message) error {
+ md := m.Descriptor()
+ if messageset.IsMessageSet(md) {
+ return o.unmarshalMessageSet(b, m)
+ }
+ fields := md.Fields()
+ for len(b) > 0 {
+ // Parse the tag (field number and wire type).
+ num, wtyp, tagLen := protowire.ConsumeTag(b)
+ if tagLen < 0 {
+ return errDecode
+ }
+ if num > protowire.MaxValidNumber {
+ return errDecode
+ }
+
+ // Find the field descriptor for this field number.
+ fd := fields.ByNumber(num)
+ if fd == nil && md.ExtensionRanges().Has(num) {
+ extType, err := o.Resolver.FindExtensionByNumber(md.FullName(), num)
+ if err != nil && err != protoregistry.NotFound {
+ return errors.New("%v: unable to resolve extension %v: %v", md.FullName(), num, err)
+ }
+ if extType != nil {
+ fd = extType.TypeDescriptor()
+ }
+ }
+ var err error
+ if fd == nil {
+ err = errUnknown
+ } else if flags.ProtoLegacy {
+ if fd.IsWeak() && fd.Message().IsPlaceholder() {
+ err = errUnknown // weak referent is not linked in
+ }
+ }
+
+ // Parse the field value.
+ var valLen int
+ switch {
+ case err != nil:
+ case fd.IsList():
+ valLen, err = o.unmarshalList(b[tagLen:], wtyp, m.Mutable(fd).List(), fd)
+ case fd.IsMap():
+ valLen, err = o.unmarshalMap(b[tagLen:], wtyp, m.Mutable(fd).Map(), fd)
+ default:
+ valLen, err = o.unmarshalSingular(b[tagLen:], wtyp, m, fd)
+ }
+ if err != nil {
+ if err != errUnknown {
+ return err
+ }
+ valLen = protowire.ConsumeFieldValue(num, wtyp, b[tagLen:])
+ if valLen < 0 {
+ return errDecode
+ }
+ if !o.DiscardUnknown {
+ m.SetUnknown(append(m.GetUnknown(), b[:tagLen+valLen]...))
+ }
+ }
+ b = b[tagLen+valLen:]
+ }
+ return nil
+}
+
+func (o UnmarshalOptions) unmarshalSingular(b []byte, wtyp protowire.Type, m protoreflect.Message, fd protoreflect.FieldDescriptor) (n int, err error) {
+ v, n, err := o.unmarshalScalar(b, wtyp, fd)
+ if err != nil {
+ return 0, err
+ }
+ switch fd.Kind() {
+ case protoreflect.GroupKind, protoreflect.MessageKind:
+ m2 := m.Mutable(fd).Message()
+ if err := o.unmarshalMessage(v.Bytes(), m2); err != nil {
+ return n, err
+ }
+ default:
+ // Non-message scalars replace the previous value.
+ m.Set(fd, v)
+ }
+ return n, nil
+}
+
+func (o UnmarshalOptions) unmarshalMap(b []byte, wtyp protowire.Type, mapv protoreflect.Map, fd protoreflect.FieldDescriptor) (n int, err error) {
+ if wtyp != protowire.BytesType {
+ return 0, errUnknown
+ }
+ b, n = protowire.ConsumeBytes(b)
+ if n < 0 {
+ return 0, errDecode
+ }
+ var (
+ keyField = fd.MapKey()
+ valField = fd.MapValue()
+ key protoreflect.Value
+ val protoreflect.Value
+ haveKey bool
+ haveVal bool
+ )
+ switch valField.Kind() {
+ case protoreflect.GroupKind, protoreflect.MessageKind:
+ val = mapv.NewValue()
+ }
+ // Map entries are represented as a two-element message with fields
+ // containing the key and value.
+ for len(b) > 0 {
+ num, wtyp, n := protowire.ConsumeTag(b)
+ if n < 0 {
+ return 0, errDecode
+ }
+ if num > protowire.MaxValidNumber {
+ return 0, errDecode
+ }
+ b = b[n:]
+ err = errUnknown
+ switch num {
+ case genid.MapEntry_Key_field_number:
+ key, n, err = o.unmarshalScalar(b, wtyp, keyField)
+ if err != nil {
+ break
+ }
+ haveKey = true
+ case genid.MapEntry_Value_field_number:
+ var v protoreflect.Value
+ v, n, err = o.unmarshalScalar(b, wtyp, valField)
+ if err != nil {
+ break
+ }
+ switch valField.Kind() {
+ case protoreflect.GroupKind, protoreflect.MessageKind:
+ if err := o.unmarshalMessage(v.Bytes(), val.Message()); err != nil {
+ return 0, err
+ }
+ default:
+ val = v
+ }
+ haveVal = true
+ }
+ if err == errUnknown {
+ n = protowire.ConsumeFieldValue(num, wtyp, b)
+ if n < 0 {
+ return 0, errDecode
+ }
+ } else if err != nil {
+ return 0, err
+ }
+ b = b[n:]
+ }
+ // Every map entry should have entries for key and value, but this is not strictly required.
+ if !haveKey {
+ key = keyField.Default()
+ }
+ if !haveVal {
+ switch valField.Kind() {
+ case protoreflect.GroupKind, protoreflect.MessageKind:
+ default:
+ val = valField.Default()
+ }
+ }
+ mapv.Set(key.MapKey(), val)
+ return n, nil
+}
+
+// errUnknown is used internally to indicate fields which should be added
+// to the unknown field set of a message. It is never returned from an exported
+// function.
+var errUnknown = errors.New("BUG: internal error (unknown)")
+
+var errDecode = errors.New("cannot parse invalid wire-format data")