diff options
Diffstat (limited to 'vendor/google.golang.org/protobuf/internal/impl/legacy_extension.go')
| -rw-r--r-- | vendor/google.golang.org/protobuf/internal/impl/legacy_extension.go | 177 |
1 files changed, 0 insertions, 177 deletions
diff --git a/vendor/google.golang.org/protobuf/internal/impl/legacy_extension.go b/vendor/google.golang.org/protobuf/internal/impl/legacy_extension.go deleted file mode 100644 index b6849d669..000000000 --- a/vendor/google.golang.org/protobuf/internal/impl/legacy_extension.go +++ /dev/null @@ -1,177 +0,0 @@ -// 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 ( - "reflect" - - "google.golang.org/protobuf/internal/descopts" - "google.golang.org/protobuf/internal/encoding/messageset" - ptag "google.golang.org/protobuf/internal/encoding/tag" - "google.golang.org/protobuf/internal/filedesc" - "google.golang.org/protobuf/internal/pragma" - "google.golang.org/protobuf/reflect/protoreflect" - "google.golang.org/protobuf/reflect/protoregistry" - "google.golang.org/protobuf/runtime/protoiface" -) - -func (xi *ExtensionInfo) initToLegacy() { - xd := xi.desc - var parent protoiface.MessageV1 - messageName := xd.ContainingMessage().FullName() - if mt, _ := protoregistry.GlobalTypes.FindMessageByName(messageName); mt != nil { - // Create a new parent message and unwrap it if possible. - mv := mt.New().Interface() - t := reflect.TypeOf(mv) - if mv, ok := mv.(unwrapper); ok { - t = reflect.TypeOf(mv.protoUnwrap()) - } - - // Check whether the message implements the legacy v1 Message interface. - mz := reflect.Zero(t).Interface() - if mz, ok := mz.(protoiface.MessageV1); ok { - parent = mz - } - } - - // Determine the v1 extension type, which is unfortunately not the same as - // the v2 ExtensionType.GoType. - extType := xi.goType - switch extType.Kind() { - case reflect.Bool, reflect.Int32, reflect.Int64, reflect.Uint32, reflect.Uint64, reflect.Float32, reflect.Float64, reflect.String: - extType = reflect.PtrTo(extType) // T -> *T for singular scalar fields - } - - // Reconstruct the legacy enum full name. - var enumName string - if xd.Kind() == protoreflect.EnumKind { - enumName = legacyEnumName(xd.Enum()) - } - - // Derive the proto file that the extension was declared within. - var filename string - if fd := xd.ParentFile(); fd != nil { - filename = fd.Path() - } - - // For MessageSet extensions, the name used is the parent message. - name := xd.FullName() - if messageset.IsMessageSetExtension(xd) { - name = name.Parent() - } - - xi.ExtendedType = parent - xi.ExtensionType = reflect.Zero(extType).Interface() - xi.Field = int32(xd.Number()) - xi.Name = string(name) - xi.Tag = ptag.Marshal(xd, enumName) - xi.Filename = filename -} - -// initFromLegacy initializes an ExtensionInfo from -// the contents of the deprecated exported fields of the type. -func (xi *ExtensionInfo) initFromLegacy() { - // The v1 API returns "type incomplete" descriptors where only the - // field number is specified. In such a case, use a placeholder. - if xi.ExtendedType == nil || xi.ExtensionType == nil { - xd := placeholderExtension{ - name: protoreflect.FullName(xi.Name), - number: protoreflect.FieldNumber(xi.Field), - } - xi.desc = extensionTypeDescriptor{xd, xi} - return - } - - // Resolve enum or message dependencies. - var ed protoreflect.EnumDescriptor - var md protoreflect.MessageDescriptor - t := reflect.TypeOf(xi.ExtensionType) - isOptional := t.Kind() == reflect.Ptr && t.Elem().Kind() != reflect.Struct - isRepeated := t.Kind() == reflect.Slice && t.Elem().Kind() != reflect.Uint8 - if isOptional || isRepeated { - t = t.Elem() - } - switch v := reflect.Zero(t).Interface().(type) { - case protoreflect.Enum: - ed = v.Descriptor() - case enumV1: - ed = LegacyLoadEnumDesc(t) - case protoreflect.ProtoMessage: - md = v.ProtoReflect().Descriptor() - case messageV1: - md = LegacyLoadMessageDesc(t) - } - - // Derive basic field information from the struct tag. - var evs protoreflect.EnumValueDescriptors - if ed != nil { - evs = ed.Values() - } - fd := ptag.Unmarshal(xi.Tag, t, evs).(*filedesc.Field) - - // Construct a v2 ExtensionType. - xd := &filedesc.Extension{L2: new(filedesc.ExtensionL2)} - xd.L0.ParentFile = filedesc.SurrogateProto2 - xd.L0.FullName = protoreflect.FullName(xi.Name) - xd.L1.Number = protoreflect.FieldNumber(xi.Field) - xd.L1.Cardinality = fd.L1.Cardinality - xd.L1.Kind = fd.L1.Kind - xd.L1.EditionFeatures = fd.L1.EditionFeatures - xd.L2.Default = fd.L1.Default - xd.L1.Extendee = Export{}.MessageDescriptorOf(xi.ExtendedType) - xd.L2.Enum = ed - xd.L2.Message = md - - // Derive real extension field name for MessageSets. - if messageset.IsMessageSet(xd.L1.Extendee) && md.FullName() == xd.L0.FullName { - xd.L0.FullName = xd.L0.FullName.Append(messageset.ExtensionName) - } - - tt := reflect.TypeOf(xi.ExtensionType) - if isOptional { - tt = tt.Elem() - } - xi.goType = tt - xi.desc = extensionTypeDescriptor{xd, xi} -} - -type placeholderExtension struct { - name protoreflect.FullName - number protoreflect.FieldNumber -} - -func (x placeholderExtension) ParentFile() protoreflect.FileDescriptor { return nil } -func (x placeholderExtension) Parent() protoreflect.Descriptor { return nil } -func (x placeholderExtension) Index() int { return 0 } -func (x placeholderExtension) Syntax() protoreflect.Syntax { return 0 } -func (x placeholderExtension) Name() protoreflect.Name { return x.name.Name() } -func (x placeholderExtension) FullName() protoreflect.FullName { return x.name } -func (x placeholderExtension) IsPlaceholder() bool { return true } -func (x placeholderExtension) Options() protoreflect.ProtoMessage { return descopts.Field } -func (x placeholderExtension) Number() protoreflect.FieldNumber { return x.number } -func (x placeholderExtension) Cardinality() protoreflect.Cardinality { return 0 } -func (x placeholderExtension) Kind() protoreflect.Kind { return 0 } -func (x placeholderExtension) HasJSONName() bool { return false } -func (x placeholderExtension) JSONName() string { return "[" + string(x.name) + "]" } -func (x placeholderExtension) TextName() string { return "[" + string(x.name) + "]" } -func (x placeholderExtension) HasPresence() bool { return false } -func (x placeholderExtension) HasOptionalKeyword() bool { return false } -func (x placeholderExtension) IsExtension() bool { return true } -func (x placeholderExtension) IsWeak() bool { return false } -func (x placeholderExtension) IsLazy() bool { return false } -func (x placeholderExtension) IsPacked() bool { return false } -func (x placeholderExtension) IsList() bool { return false } -func (x placeholderExtension) IsMap() bool { return false } -func (x placeholderExtension) MapKey() protoreflect.FieldDescriptor { return nil } -func (x placeholderExtension) MapValue() protoreflect.FieldDescriptor { return nil } -func (x placeholderExtension) HasDefault() bool { return false } -func (x placeholderExtension) Default() protoreflect.Value { return protoreflect.Value{} } -func (x placeholderExtension) DefaultEnumValue() protoreflect.EnumValueDescriptor { return nil } -func (x placeholderExtension) ContainingOneof() protoreflect.OneofDescriptor { return nil } -func (x placeholderExtension) ContainingMessage() protoreflect.MessageDescriptor { return nil } -func (x placeholderExtension) Enum() protoreflect.EnumDescriptor { return nil } -func (x placeholderExtension) Message() protoreflect.MessageDescriptor { return nil } -func (x placeholderExtension) ProtoType(protoreflect.FieldDescriptor) { return } -func (x placeholderExtension) ProtoInternal(pragma.DoNotImplement) { return } |