| // 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 protodesc |
| |
| import ( |
| "fmt" |
| |
| "github.com/golang/protobuf/v2/internal/encoding/defval" |
| "github.com/golang/protobuf/v2/internal/scalar" |
| "github.com/golang/protobuf/v2/reflect/protoreflect" |
| descriptorpb "github.com/golang/protobuf/v2/types/descriptor" |
| ) |
| |
| // ToFileDescriptorProto converts a FileDescriptor to a |
| // google.protobuf.FileDescriptorProto. |
| func ToFileDescriptorProto(file protoreflect.FileDescriptor) *descriptorpb.FileDescriptorProto { |
| p := &descriptorpb.FileDescriptorProto{ |
| Name: scalar.String(file.Path()), |
| Package: scalar.String(string(file.Package())), |
| // TODO: Clone options messages, or document this as aliasing. |
| Options: file.Options().(*descriptorpb.FileOptions), |
| } |
| for i, imports := 0, file.Imports(); i < imports.Len(); i++ { |
| imp := imports.Get(i) |
| p.Dependency = append(p.Dependency, imp.Path()) |
| if imp.IsPublic { |
| p.PublicDependency = append(p.PublicDependency, int32(i)) |
| } |
| if imp.IsWeak { |
| p.WeakDependency = append(p.WeakDependency, int32(i)) |
| } |
| } |
| for i, messages := 0, file.Messages(); i < messages.Len(); i++ { |
| p.MessageType = append(p.MessageType, ToDescriptorProto(messages.Get(i))) |
| } |
| for i, enums := 0, file.Enums(); i < enums.Len(); i++ { |
| p.EnumType = append(p.EnumType, ToEnumDescriptorProto(enums.Get(i))) |
| } |
| for i, services := 0, file.Services(); i < services.Len(); i++ { |
| p.Service = append(p.Service, ToServiceDescriptorProto(services.Get(i))) |
| } |
| for i, exts := 0, file.Extensions(); i < exts.Len(); i++ { |
| p.Extension = append(p.Extension, ToFieldDescriptorProto(exts.Get(i))) |
| } |
| if syntax := file.Syntax(); syntax != protoreflect.Proto2 { |
| p.Syntax = scalar.String(file.Syntax().String()) |
| } |
| return p |
| } |
| |
| // ToDescriptorProto converts a MessageDescriptor to a |
| // google.protobuf.DescriptorProto. |
| func ToDescriptorProto(message protoreflect.MessageDescriptor) *descriptorpb.DescriptorProto { |
| p := &descriptorpb.DescriptorProto{ |
| Name: scalar.String(string(message.Name())), |
| Options: message.Options().(*descriptorpb.MessageOptions), |
| } |
| for i, fields := 0, message.Fields(); i < fields.Len(); i++ { |
| p.Field = append(p.Field, ToFieldDescriptorProto(fields.Get(i))) |
| } |
| for i, exts := 0, message.Extensions(); i < exts.Len(); i++ { |
| p.Extension = append(p.Extension, ToFieldDescriptorProto(exts.Get(i))) |
| } |
| for i, messages := 0, message.Messages(); i < messages.Len(); i++ { |
| p.NestedType = append(p.NestedType, ToDescriptorProto(messages.Get(i))) |
| } |
| for i, enums := 0, message.Enums(); i < enums.Len(); i++ { |
| p.EnumType = append(p.EnumType, ToEnumDescriptorProto(enums.Get(i))) |
| } |
| for i, xranges := 0, message.ExtensionRanges(); i < xranges.Len(); i++ { |
| xrange := xranges.Get(i) |
| p.ExtensionRange = append(p.ExtensionRange, &descriptorpb.DescriptorProto_ExtensionRange{ |
| Start: scalar.Int32(int32(xrange[0])), |
| End: scalar.Int32(int32(xrange[1])), |
| Options: message.ExtensionRangeOptions(i).(*descriptorpb.ExtensionRangeOptions), |
| }) |
| } |
| for i, oneofs := 0, message.Oneofs(); i < oneofs.Len(); i++ { |
| p.OneofDecl = append(p.OneofDecl, ToOneofDescriptorProto(oneofs.Get(i))) |
| } |
| for i, ranges := 0, message.ReservedRanges(); i < ranges.Len(); i++ { |
| rrange := ranges.Get(i) |
| p.ReservedRange = append(p.ReservedRange, &descriptorpb.DescriptorProto_ReservedRange{ |
| Start: scalar.Int32(int32(rrange[0])), |
| End: scalar.Int32(int32(rrange[1])), |
| }) |
| } |
| for i, names := 0, message.ReservedNames(); i < names.Len(); i++ { |
| p.ReservedName = append(p.ReservedName, string(names.Get(i))) |
| } |
| return p |
| } |
| |
| // ToFieldDescriptorProto converts a FieldDescriptor to a |
| // google.protobuf.FieldDescriptorProto. |
| func ToFieldDescriptorProto(field protoreflect.FieldDescriptor) *descriptorpb.FieldDescriptorProto { |
| p := &descriptorpb.FieldDescriptorProto{ |
| Name: scalar.String(string(field.Name())), |
| Number: scalar.Int32(int32(field.Number())), |
| Label: descriptorpb.FieldDescriptorProto_Label(field.Cardinality()).Enum(), |
| Type: descriptorpb.FieldDescriptorProto_Type(field.Kind()).Enum(), |
| Extendee: fullNameOf(field.Extendee()), |
| Options: field.Options().(*descriptorpb.FieldOptions), |
| } |
| switch field.Kind() { |
| case protoreflect.EnumKind: |
| p.TypeName = fullNameOf(field.Enum()) |
| case protoreflect.MessageKind, protoreflect.GroupKind: |
| p.TypeName = fullNameOf(field.Message()) |
| } |
| if field.HasJSONName() { |
| p.JsonName = scalar.String(field.JSONName()) |
| } |
| if field.HasDefault() { |
| if field.Kind() == protoreflect.EnumKind { |
| // TODO: defval.Marshal should probably take a FieldDescriptor |
| // instead of a Kind and do this itself. |
| p.DefaultValue = scalar.String(string(field.DefaultEnumValue().Name())) |
| } else { |
| def, err := defval.Marshal(field.Default(), field.Kind(), defval.Descriptor) |
| if err != nil { |
| panic(fmt.Sprintf("%v: %v", field.FullName(), err)) |
| } |
| p.DefaultValue = scalar.String(def) |
| } |
| } |
| if oneof := field.Oneof(); oneof != nil { |
| p.OneofIndex = scalar.Int32(int32(oneof.Index())) |
| } |
| return p |
| } |
| |
| // ToOneofDescriptorProto converts a OneofDescriptor to a |
| // google.protobuf.OneofDescriptorProto. |
| func ToOneofDescriptorProto(oneof protoreflect.OneofDescriptor) *descriptorpb.OneofDescriptorProto { |
| return &descriptorpb.OneofDescriptorProto{ |
| Name: scalar.String(string(oneof.Name())), |
| Options: oneof.Options().(*descriptorpb.OneofOptions), |
| } |
| } |
| |
| // ToEnumDescriptorProto converts a EnumDescriptor to a |
| // google.protobuf.EnumDescriptorProto. |
| func ToEnumDescriptorProto(enum protoreflect.EnumDescriptor) *descriptorpb.EnumDescriptorProto { |
| p := &descriptorpb.EnumDescriptorProto{ |
| Name: scalar.String(string(enum.Name())), |
| Options: enum.Options().(*descriptorpb.EnumOptions), |
| } |
| for i, values := 0, enum.Values(); i < values.Len(); i++ { |
| p.Value = append(p.Value, ToEnumValueDescriptorProto(values.Get(i))) |
| } |
| for i, ranges := 0, enum.ReservedRanges(); i < ranges.Len(); i++ { |
| rrange := ranges.Get(i) |
| p.ReservedRange = append(p.ReservedRange, &descriptorpb.EnumDescriptorProto_EnumReservedRange{ |
| Start: scalar.Int32(int32(rrange[0])), |
| End: scalar.Int32(int32(rrange[1])), |
| }) |
| } |
| for i, names := 0, enum.ReservedNames(); i < names.Len(); i++ { |
| p.ReservedName = append(p.ReservedName, string(names.Get(i))) |
| } |
| return p |
| } |
| |
| // ToEnumValueDescriptorProto converts a EnumValueDescriptor to a |
| // google.protobuf.EnumValueDescriptorProto. |
| func ToEnumValueDescriptorProto(value protoreflect.EnumValueDescriptor) *descriptorpb.EnumValueDescriptorProto { |
| return &descriptorpb.EnumValueDescriptorProto{ |
| Name: scalar.String(string(value.Name())), |
| Number: scalar.Int32(int32(value.Number())), |
| Options: value.Options().(*descriptorpb.EnumValueOptions), |
| } |
| } |
| |
| // ToServiceDescriptorProto converts a ServiceDescriptor to a |
| // google.protobuf.ServiceDescriptorProto. |
| func ToServiceDescriptorProto(service protoreflect.ServiceDescriptor) *descriptorpb.ServiceDescriptorProto { |
| p := &descriptorpb.ServiceDescriptorProto{ |
| Name: scalar.String(string(service.Name())), |
| Options: service.Options().(*descriptorpb.ServiceOptions), |
| } |
| for i, methods := 0, service.Methods(); i < methods.Len(); i++ { |
| p.Method = append(p.Method, ToMethodDescriptorProto(methods.Get(i))) |
| } |
| return p |
| } |
| |
| // ToMethodDescriptorProto converts a MethodDescriptor to a |
| // google.protobuf.MethodDescriptorProto. |
| func ToMethodDescriptorProto(method protoreflect.MethodDescriptor) *descriptorpb.MethodDescriptorProto { |
| p := &descriptorpb.MethodDescriptorProto{ |
| Name: scalar.String(string(method.Name())), |
| InputType: fullNameOf(method.Input()), |
| OutputType: fullNameOf(method.Output()), |
| Options: method.Options().(*descriptorpb.MethodOptions), |
| } |
| if method.IsStreamingClient() { |
| p.ClientStreaming = scalar.Bool(true) |
| } |
| if method.IsStreamingServer() { |
| p.ServerStreaming = scalar.Bool(true) |
| } |
| return p |
| } |
| |
| func fullNameOf(d protoreflect.Descriptor) *string { |
| if d == nil { |
| return nil |
| } |
| return scalar.String("." + string(d.FullName())) |
| } |