[VOL-4291] Rw-core updates for gRPC migration
Change-Id: I8d5a554409115b29318089671ca4e1ab3fa98810
diff --git a/vendor/google.golang.org/protobuf/internal/impl/convert.go b/vendor/google.golang.org/protobuf/internal/impl/convert.go
new file mode 100644
index 0000000..acd61bb
--- /dev/null
+++ b/vendor/google.golang.org/protobuf/internal/impl/convert.go
@@ -0,0 +1,496 @@
+// 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 impl
+
+import (
+ "fmt"
+ "reflect"
+
+ pref "google.golang.org/protobuf/reflect/protoreflect"
+)
+
+// unwrapper unwraps the value to the underlying value.
+// This is implemented by List and Map.
+type unwrapper interface {
+ protoUnwrap() interface{}
+}
+
+// A Converter coverts to/from Go reflect.Value types and protobuf protoreflect.Value types.
+type Converter interface {
+ // PBValueOf converts a reflect.Value to a protoreflect.Value.
+ PBValueOf(reflect.Value) pref.Value
+
+ // GoValueOf converts a protoreflect.Value to a reflect.Value.
+ GoValueOf(pref.Value) reflect.Value
+
+ // IsValidPB returns whether a protoreflect.Value is compatible with this type.
+ IsValidPB(pref.Value) bool
+
+ // IsValidGo returns whether a reflect.Value is compatible with this type.
+ IsValidGo(reflect.Value) bool
+
+ // New returns a new field value.
+ // For scalars, it returns the default value of the field.
+ // For composite types, it returns a new mutable value.
+ New() pref.Value
+
+ // Zero returns a new field value.
+ // For scalars, it returns the default value of the field.
+ // For composite types, it returns an immutable, empty value.
+ Zero() pref.Value
+}
+
+// NewConverter matches a Go type with a protobuf field and returns a Converter
+// that converts between the two. Enums must be a named int32 kind that
+// implements protoreflect.Enum, and messages must be pointer to a named
+// struct type that implements protoreflect.ProtoMessage.
+//
+// This matcher deliberately supports a wider range of Go types than what
+// protoc-gen-go historically generated to be able to automatically wrap some
+// v1 messages generated by other forks of protoc-gen-go.
+func NewConverter(t reflect.Type, fd pref.FieldDescriptor) Converter {
+ switch {
+ case fd.IsList():
+ return newListConverter(t, fd)
+ case fd.IsMap():
+ return newMapConverter(t, fd)
+ default:
+ return newSingularConverter(t, fd)
+ }
+ panic(fmt.Sprintf("invalid Go type %v for field %v", t, fd.FullName()))
+}
+
+var (
+ boolType = reflect.TypeOf(bool(false))
+ int32Type = reflect.TypeOf(int32(0))
+ int64Type = reflect.TypeOf(int64(0))
+ uint32Type = reflect.TypeOf(uint32(0))
+ uint64Type = reflect.TypeOf(uint64(0))
+ float32Type = reflect.TypeOf(float32(0))
+ float64Type = reflect.TypeOf(float64(0))
+ stringType = reflect.TypeOf(string(""))
+ bytesType = reflect.TypeOf([]byte(nil))
+ byteType = reflect.TypeOf(byte(0))
+)
+
+var (
+ boolZero = pref.ValueOfBool(false)
+ int32Zero = pref.ValueOfInt32(0)
+ int64Zero = pref.ValueOfInt64(0)
+ uint32Zero = pref.ValueOfUint32(0)
+ uint64Zero = pref.ValueOfUint64(0)
+ float32Zero = pref.ValueOfFloat32(0)
+ float64Zero = pref.ValueOfFloat64(0)
+ stringZero = pref.ValueOfString("")
+ bytesZero = pref.ValueOfBytes(nil)
+)
+
+func newSingularConverter(t reflect.Type, fd pref.FieldDescriptor) Converter {
+ defVal := func(fd pref.FieldDescriptor, zero pref.Value) pref.Value {
+ if fd.Cardinality() == pref.Repeated {
+ // Default isn't defined for repeated fields.
+ return zero
+ }
+ return fd.Default()
+ }
+ switch fd.Kind() {
+ case pref.BoolKind:
+ if t.Kind() == reflect.Bool {
+ return &boolConverter{t, defVal(fd, boolZero)}
+ }
+ case pref.Int32Kind, pref.Sint32Kind, pref.Sfixed32Kind:
+ if t.Kind() == reflect.Int32 {
+ return &int32Converter{t, defVal(fd, int32Zero)}
+ }
+ case pref.Int64Kind, pref.Sint64Kind, pref.Sfixed64Kind:
+ if t.Kind() == reflect.Int64 {
+ return &int64Converter{t, defVal(fd, int64Zero)}
+ }
+ case pref.Uint32Kind, pref.Fixed32Kind:
+ if t.Kind() == reflect.Uint32 {
+ return &uint32Converter{t, defVal(fd, uint32Zero)}
+ }
+ case pref.Uint64Kind, pref.Fixed64Kind:
+ if t.Kind() == reflect.Uint64 {
+ return &uint64Converter{t, defVal(fd, uint64Zero)}
+ }
+ case pref.FloatKind:
+ if t.Kind() == reflect.Float32 {
+ return &float32Converter{t, defVal(fd, float32Zero)}
+ }
+ case pref.DoubleKind:
+ if t.Kind() == reflect.Float64 {
+ return &float64Converter{t, defVal(fd, float64Zero)}
+ }
+ case pref.StringKind:
+ if t.Kind() == reflect.String || (t.Kind() == reflect.Slice && t.Elem() == byteType) {
+ return &stringConverter{t, defVal(fd, stringZero)}
+ }
+ case pref.BytesKind:
+ if t.Kind() == reflect.String || (t.Kind() == reflect.Slice && t.Elem() == byteType) {
+ return &bytesConverter{t, defVal(fd, bytesZero)}
+ }
+ case pref.EnumKind:
+ // Handle enums, which must be a named int32 type.
+ if t.Kind() == reflect.Int32 {
+ return newEnumConverter(t, fd)
+ }
+ case pref.MessageKind, pref.GroupKind:
+ return newMessageConverter(t)
+ }
+ panic(fmt.Sprintf("invalid Go type %v for field %v", t, fd.FullName()))
+}
+
+type boolConverter struct {
+ goType reflect.Type
+ def pref.Value
+}
+
+func (c *boolConverter) PBValueOf(v reflect.Value) pref.Value {
+ if v.Type() != c.goType {
+ panic(fmt.Sprintf("invalid type: got %v, want %v", v.Type(), c.goType))
+ }
+ return pref.ValueOfBool(v.Bool())
+}
+func (c *boolConverter) GoValueOf(v pref.Value) reflect.Value {
+ return reflect.ValueOf(v.Bool()).Convert(c.goType)
+}
+func (c *boolConverter) IsValidPB(v pref.Value) bool {
+ _, ok := v.Interface().(bool)
+ return ok
+}
+func (c *boolConverter) IsValidGo(v reflect.Value) bool {
+ return v.IsValid() && v.Type() == c.goType
+}
+func (c *boolConverter) New() pref.Value { return c.def }
+func (c *boolConverter) Zero() pref.Value { return c.def }
+
+type int32Converter struct {
+ goType reflect.Type
+ def pref.Value
+}
+
+func (c *int32Converter) PBValueOf(v reflect.Value) pref.Value {
+ if v.Type() != c.goType {
+ panic(fmt.Sprintf("invalid type: got %v, want %v", v.Type(), c.goType))
+ }
+ return pref.ValueOfInt32(int32(v.Int()))
+}
+func (c *int32Converter) GoValueOf(v pref.Value) reflect.Value {
+ return reflect.ValueOf(int32(v.Int())).Convert(c.goType)
+}
+func (c *int32Converter) IsValidPB(v pref.Value) bool {
+ _, ok := v.Interface().(int32)
+ return ok
+}
+func (c *int32Converter) IsValidGo(v reflect.Value) bool {
+ return v.IsValid() && v.Type() == c.goType
+}
+func (c *int32Converter) New() pref.Value { return c.def }
+func (c *int32Converter) Zero() pref.Value { return c.def }
+
+type int64Converter struct {
+ goType reflect.Type
+ def pref.Value
+}
+
+func (c *int64Converter) PBValueOf(v reflect.Value) pref.Value {
+ if v.Type() != c.goType {
+ panic(fmt.Sprintf("invalid type: got %v, want %v", v.Type(), c.goType))
+ }
+ return pref.ValueOfInt64(int64(v.Int()))
+}
+func (c *int64Converter) GoValueOf(v pref.Value) reflect.Value {
+ return reflect.ValueOf(int64(v.Int())).Convert(c.goType)
+}
+func (c *int64Converter) IsValidPB(v pref.Value) bool {
+ _, ok := v.Interface().(int64)
+ return ok
+}
+func (c *int64Converter) IsValidGo(v reflect.Value) bool {
+ return v.IsValid() && v.Type() == c.goType
+}
+func (c *int64Converter) New() pref.Value { return c.def }
+func (c *int64Converter) Zero() pref.Value { return c.def }
+
+type uint32Converter struct {
+ goType reflect.Type
+ def pref.Value
+}
+
+func (c *uint32Converter) PBValueOf(v reflect.Value) pref.Value {
+ if v.Type() != c.goType {
+ panic(fmt.Sprintf("invalid type: got %v, want %v", v.Type(), c.goType))
+ }
+ return pref.ValueOfUint32(uint32(v.Uint()))
+}
+func (c *uint32Converter) GoValueOf(v pref.Value) reflect.Value {
+ return reflect.ValueOf(uint32(v.Uint())).Convert(c.goType)
+}
+func (c *uint32Converter) IsValidPB(v pref.Value) bool {
+ _, ok := v.Interface().(uint32)
+ return ok
+}
+func (c *uint32Converter) IsValidGo(v reflect.Value) bool {
+ return v.IsValid() && v.Type() == c.goType
+}
+func (c *uint32Converter) New() pref.Value { return c.def }
+func (c *uint32Converter) Zero() pref.Value { return c.def }
+
+type uint64Converter struct {
+ goType reflect.Type
+ def pref.Value
+}
+
+func (c *uint64Converter) PBValueOf(v reflect.Value) pref.Value {
+ if v.Type() != c.goType {
+ panic(fmt.Sprintf("invalid type: got %v, want %v", v.Type(), c.goType))
+ }
+ return pref.ValueOfUint64(uint64(v.Uint()))
+}
+func (c *uint64Converter) GoValueOf(v pref.Value) reflect.Value {
+ return reflect.ValueOf(uint64(v.Uint())).Convert(c.goType)
+}
+func (c *uint64Converter) IsValidPB(v pref.Value) bool {
+ _, ok := v.Interface().(uint64)
+ return ok
+}
+func (c *uint64Converter) IsValidGo(v reflect.Value) bool {
+ return v.IsValid() && v.Type() == c.goType
+}
+func (c *uint64Converter) New() pref.Value { return c.def }
+func (c *uint64Converter) Zero() pref.Value { return c.def }
+
+type float32Converter struct {
+ goType reflect.Type
+ def pref.Value
+}
+
+func (c *float32Converter) PBValueOf(v reflect.Value) pref.Value {
+ if v.Type() != c.goType {
+ panic(fmt.Sprintf("invalid type: got %v, want %v", v.Type(), c.goType))
+ }
+ return pref.ValueOfFloat32(float32(v.Float()))
+}
+func (c *float32Converter) GoValueOf(v pref.Value) reflect.Value {
+ return reflect.ValueOf(float32(v.Float())).Convert(c.goType)
+}
+func (c *float32Converter) IsValidPB(v pref.Value) bool {
+ _, ok := v.Interface().(float32)
+ return ok
+}
+func (c *float32Converter) IsValidGo(v reflect.Value) bool {
+ return v.IsValid() && v.Type() == c.goType
+}
+func (c *float32Converter) New() pref.Value { return c.def }
+func (c *float32Converter) Zero() pref.Value { return c.def }
+
+type float64Converter struct {
+ goType reflect.Type
+ def pref.Value
+}
+
+func (c *float64Converter) PBValueOf(v reflect.Value) pref.Value {
+ if v.Type() != c.goType {
+ panic(fmt.Sprintf("invalid type: got %v, want %v", v.Type(), c.goType))
+ }
+ return pref.ValueOfFloat64(float64(v.Float()))
+}
+func (c *float64Converter) GoValueOf(v pref.Value) reflect.Value {
+ return reflect.ValueOf(float64(v.Float())).Convert(c.goType)
+}
+func (c *float64Converter) IsValidPB(v pref.Value) bool {
+ _, ok := v.Interface().(float64)
+ return ok
+}
+func (c *float64Converter) IsValidGo(v reflect.Value) bool {
+ return v.IsValid() && v.Type() == c.goType
+}
+func (c *float64Converter) New() pref.Value { return c.def }
+func (c *float64Converter) Zero() pref.Value { return c.def }
+
+type stringConverter struct {
+ goType reflect.Type
+ def pref.Value
+}
+
+func (c *stringConverter) PBValueOf(v reflect.Value) pref.Value {
+ if v.Type() != c.goType {
+ panic(fmt.Sprintf("invalid type: got %v, want %v", v.Type(), c.goType))
+ }
+ return pref.ValueOfString(v.Convert(stringType).String())
+}
+func (c *stringConverter) GoValueOf(v pref.Value) reflect.Value {
+ // pref.Value.String never panics, so we go through an interface
+ // conversion here to check the type.
+ s := v.Interface().(string)
+ if c.goType.Kind() == reflect.Slice && s == "" {
+ return reflect.Zero(c.goType) // ensure empty string is []byte(nil)
+ }
+ return reflect.ValueOf(s).Convert(c.goType)
+}
+func (c *stringConverter) IsValidPB(v pref.Value) bool {
+ _, ok := v.Interface().(string)
+ return ok
+}
+func (c *stringConverter) IsValidGo(v reflect.Value) bool {
+ return v.IsValid() && v.Type() == c.goType
+}
+func (c *stringConverter) New() pref.Value { return c.def }
+func (c *stringConverter) Zero() pref.Value { return c.def }
+
+type bytesConverter struct {
+ goType reflect.Type
+ def pref.Value
+}
+
+func (c *bytesConverter) PBValueOf(v reflect.Value) pref.Value {
+ if v.Type() != c.goType {
+ panic(fmt.Sprintf("invalid type: got %v, want %v", v.Type(), c.goType))
+ }
+ if c.goType.Kind() == reflect.String && v.Len() == 0 {
+ return pref.ValueOfBytes(nil) // ensure empty string is []byte(nil)
+ }
+ return pref.ValueOfBytes(v.Convert(bytesType).Bytes())
+}
+func (c *bytesConverter) GoValueOf(v pref.Value) reflect.Value {
+ return reflect.ValueOf(v.Bytes()).Convert(c.goType)
+}
+func (c *bytesConverter) IsValidPB(v pref.Value) bool {
+ _, ok := v.Interface().([]byte)
+ return ok
+}
+func (c *bytesConverter) IsValidGo(v reflect.Value) bool {
+ return v.IsValid() && v.Type() == c.goType
+}
+func (c *bytesConverter) New() pref.Value { return c.def }
+func (c *bytesConverter) Zero() pref.Value { return c.def }
+
+type enumConverter struct {
+ goType reflect.Type
+ def pref.Value
+}
+
+func newEnumConverter(goType reflect.Type, fd pref.FieldDescriptor) Converter {
+ var def pref.Value
+ if fd.Cardinality() == pref.Repeated {
+ def = pref.ValueOfEnum(fd.Enum().Values().Get(0).Number())
+ } else {
+ def = fd.Default()
+ }
+ return &enumConverter{goType, def}
+}
+
+func (c *enumConverter) PBValueOf(v reflect.Value) pref.Value {
+ if v.Type() != c.goType {
+ panic(fmt.Sprintf("invalid type: got %v, want %v", v.Type(), c.goType))
+ }
+ return pref.ValueOfEnum(pref.EnumNumber(v.Int()))
+}
+
+func (c *enumConverter) GoValueOf(v pref.Value) reflect.Value {
+ return reflect.ValueOf(v.Enum()).Convert(c.goType)
+}
+
+func (c *enumConverter) IsValidPB(v pref.Value) bool {
+ _, ok := v.Interface().(pref.EnumNumber)
+ return ok
+}
+
+func (c *enumConverter) IsValidGo(v reflect.Value) bool {
+ return v.IsValid() && v.Type() == c.goType
+}
+
+func (c *enumConverter) New() pref.Value {
+ return c.def
+}
+
+func (c *enumConverter) Zero() pref.Value {
+ return c.def
+}
+
+type messageConverter struct {
+ goType reflect.Type
+}
+
+func newMessageConverter(goType reflect.Type) Converter {
+ return &messageConverter{goType}
+}
+
+func (c *messageConverter) PBValueOf(v reflect.Value) pref.Value {
+ if v.Type() != c.goType {
+ panic(fmt.Sprintf("invalid type: got %v, want %v", v.Type(), c.goType))
+ }
+ if c.isNonPointer() {
+ if v.CanAddr() {
+ v = v.Addr() // T => *T
+ } else {
+ v = reflect.Zero(reflect.PtrTo(v.Type()))
+ }
+ }
+ if m, ok := v.Interface().(pref.ProtoMessage); ok {
+ return pref.ValueOfMessage(m.ProtoReflect())
+ }
+ return pref.ValueOfMessage(legacyWrapMessage(v))
+}
+
+func (c *messageConverter) GoValueOf(v pref.Value) reflect.Value {
+ m := v.Message()
+ var rv reflect.Value
+ if u, ok := m.(unwrapper); ok {
+ rv = reflect.ValueOf(u.protoUnwrap())
+ } else {
+ rv = reflect.ValueOf(m.Interface())
+ }
+ if c.isNonPointer() {
+ if rv.Type() != reflect.PtrTo(c.goType) {
+ panic(fmt.Sprintf("invalid type: got %v, want %v", rv.Type(), reflect.PtrTo(c.goType)))
+ }
+ if !rv.IsNil() {
+ rv = rv.Elem() // *T => T
+ } else {
+ rv = reflect.Zero(rv.Type().Elem())
+ }
+ }
+ if rv.Type() != c.goType {
+ panic(fmt.Sprintf("invalid type: got %v, want %v", rv.Type(), c.goType))
+ }
+ return rv
+}
+
+func (c *messageConverter) IsValidPB(v pref.Value) bool {
+ m := v.Message()
+ var rv reflect.Value
+ if u, ok := m.(unwrapper); ok {
+ rv = reflect.ValueOf(u.protoUnwrap())
+ } else {
+ rv = reflect.ValueOf(m.Interface())
+ }
+ if c.isNonPointer() {
+ return rv.Type() == reflect.PtrTo(c.goType)
+ }
+ return rv.Type() == c.goType
+}
+
+func (c *messageConverter) IsValidGo(v reflect.Value) bool {
+ return v.IsValid() && v.Type() == c.goType
+}
+
+func (c *messageConverter) New() pref.Value {
+ if c.isNonPointer() {
+ return c.PBValueOf(reflect.New(c.goType).Elem())
+ }
+ return c.PBValueOf(reflect.New(c.goType.Elem()))
+}
+
+func (c *messageConverter) Zero() pref.Value {
+ return c.PBValueOf(reflect.Zero(c.goType))
+}
+
+// isNonPointer reports whether the type is a non-pointer type.
+// This never occurs for generated message types.
+func (c *messageConverter) isNonPointer() bool {
+ return c.goType.Kind() != reflect.Ptr
+}