gtsocial-umbx

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proto.go (9712B)


      1 // Copyright 2019 The Go Authors. All rights reserved.
      2 // Use of this source code is governed by a BSD-style
      3 // license that can be found in the LICENSE file.
      4 
      5 package protodesc
      6 
      7 import (
      8 	"fmt"
      9 	"strings"
     10 
     11 	"google.golang.org/protobuf/internal/encoding/defval"
     12 	"google.golang.org/protobuf/internal/strs"
     13 	"google.golang.org/protobuf/proto"
     14 	"google.golang.org/protobuf/reflect/protoreflect"
     15 
     16 	"google.golang.org/protobuf/types/descriptorpb"
     17 )
     18 
     19 // ToFileDescriptorProto copies a protoreflect.FileDescriptor into a
     20 // google.protobuf.FileDescriptorProto message.
     21 func ToFileDescriptorProto(file protoreflect.FileDescriptor) *descriptorpb.FileDescriptorProto {
     22 	p := &descriptorpb.FileDescriptorProto{
     23 		Name:    proto.String(file.Path()),
     24 		Options: proto.Clone(file.Options()).(*descriptorpb.FileOptions),
     25 	}
     26 	if file.Package() != "" {
     27 		p.Package = proto.String(string(file.Package()))
     28 	}
     29 	for i, imports := 0, file.Imports(); i < imports.Len(); i++ {
     30 		imp := imports.Get(i)
     31 		p.Dependency = append(p.Dependency, imp.Path())
     32 		if imp.IsPublic {
     33 			p.PublicDependency = append(p.PublicDependency, int32(i))
     34 		}
     35 		if imp.IsWeak {
     36 			p.WeakDependency = append(p.WeakDependency, int32(i))
     37 		}
     38 	}
     39 	for i, locs := 0, file.SourceLocations(); i < locs.Len(); i++ {
     40 		loc := locs.Get(i)
     41 		l := &descriptorpb.SourceCodeInfo_Location{}
     42 		l.Path = append(l.Path, loc.Path...)
     43 		if loc.StartLine == loc.EndLine {
     44 			l.Span = []int32{int32(loc.StartLine), int32(loc.StartColumn), int32(loc.EndColumn)}
     45 		} else {
     46 			l.Span = []int32{int32(loc.StartLine), int32(loc.StartColumn), int32(loc.EndLine), int32(loc.EndColumn)}
     47 		}
     48 		l.LeadingDetachedComments = append([]string(nil), loc.LeadingDetachedComments...)
     49 		if loc.LeadingComments != "" {
     50 			l.LeadingComments = proto.String(loc.LeadingComments)
     51 		}
     52 		if loc.TrailingComments != "" {
     53 			l.TrailingComments = proto.String(loc.TrailingComments)
     54 		}
     55 		if p.SourceCodeInfo == nil {
     56 			p.SourceCodeInfo = &descriptorpb.SourceCodeInfo{}
     57 		}
     58 		p.SourceCodeInfo.Location = append(p.SourceCodeInfo.Location, l)
     59 
     60 	}
     61 	for i, messages := 0, file.Messages(); i < messages.Len(); i++ {
     62 		p.MessageType = append(p.MessageType, ToDescriptorProto(messages.Get(i)))
     63 	}
     64 	for i, enums := 0, file.Enums(); i < enums.Len(); i++ {
     65 		p.EnumType = append(p.EnumType, ToEnumDescriptorProto(enums.Get(i)))
     66 	}
     67 	for i, services := 0, file.Services(); i < services.Len(); i++ {
     68 		p.Service = append(p.Service, ToServiceDescriptorProto(services.Get(i)))
     69 	}
     70 	for i, exts := 0, file.Extensions(); i < exts.Len(); i++ {
     71 		p.Extension = append(p.Extension, ToFieldDescriptorProto(exts.Get(i)))
     72 	}
     73 	if syntax := file.Syntax(); syntax != protoreflect.Proto2 {
     74 		p.Syntax = proto.String(file.Syntax().String())
     75 	}
     76 	return p
     77 }
     78 
     79 // ToDescriptorProto copies a protoreflect.MessageDescriptor into a
     80 // google.protobuf.DescriptorProto message.
     81 func ToDescriptorProto(message protoreflect.MessageDescriptor) *descriptorpb.DescriptorProto {
     82 	p := &descriptorpb.DescriptorProto{
     83 		Name:    proto.String(string(message.Name())),
     84 		Options: proto.Clone(message.Options()).(*descriptorpb.MessageOptions),
     85 	}
     86 	for i, fields := 0, message.Fields(); i < fields.Len(); i++ {
     87 		p.Field = append(p.Field, ToFieldDescriptorProto(fields.Get(i)))
     88 	}
     89 	for i, exts := 0, message.Extensions(); i < exts.Len(); i++ {
     90 		p.Extension = append(p.Extension, ToFieldDescriptorProto(exts.Get(i)))
     91 	}
     92 	for i, messages := 0, message.Messages(); i < messages.Len(); i++ {
     93 		p.NestedType = append(p.NestedType, ToDescriptorProto(messages.Get(i)))
     94 	}
     95 	for i, enums := 0, message.Enums(); i < enums.Len(); i++ {
     96 		p.EnumType = append(p.EnumType, ToEnumDescriptorProto(enums.Get(i)))
     97 	}
     98 	for i, xranges := 0, message.ExtensionRanges(); i < xranges.Len(); i++ {
     99 		xrange := xranges.Get(i)
    100 		p.ExtensionRange = append(p.ExtensionRange, &descriptorpb.DescriptorProto_ExtensionRange{
    101 			Start:   proto.Int32(int32(xrange[0])),
    102 			End:     proto.Int32(int32(xrange[1])),
    103 			Options: proto.Clone(message.ExtensionRangeOptions(i)).(*descriptorpb.ExtensionRangeOptions),
    104 		})
    105 	}
    106 	for i, oneofs := 0, message.Oneofs(); i < oneofs.Len(); i++ {
    107 		p.OneofDecl = append(p.OneofDecl, ToOneofDescriptorProto(oneofs.Get(i)))
    108 	}
    109 	for i, ranges := 0, message.ReservedRanges(); i < ranges.Len(); i++ {
    110 		rrange := ranges.Get(i)
    111 		p.ReservedRange = append(p.ReservedRange, &descriptorpb.DescriptorProto_ReservedRange{
    112 			Start: proto.Int32(int32(rrange[0])),
    113 			End:   proto.Int32(int32(rrange[1])),
    114 		})
    115 	}
    116 	for i, names := 0, message.ReservedNames(); i < names.Len(); i++ {
    117 		p.ReservedName = append(p.ReservedName, string(names.Get(i)))
    118 	}
    119 	return p
    120 }
    121 
    122 // ToFieldDescriptorProto copies a protoreflect.FieldDescriptor into a
    123 // google.protobuf.FieldDescriptorProto message.
    124 func ToFieldDescriptorProto(field protoreflect.FieldDescriptor) *descriptorpb.FieldDescriptorProto {
    125 	p := &descriptorpb.FieldDescriptorProto{
    126 		Name:    proto.String(string(field.Name())),
    127 		Number:  proto.Int32(int32(field.Number())),
    128 		Label:   descriptorpb.FieldDescriptorProto_Label(field.Cardinality()).Enum(),
    129 		Options: proto.Clone(field.Options()).(*descriptorpb.FieldOptions),
    130 	}
    131 	if field.IsExtension() {
    132 		p.Extendee = fullNameOf(field.ContainingMessage())
    133 	}
    134 	if field.Kind().IsValid() {
    135 		p.Type = descriptorpb.FieldDescriptorProto_Type(field.Kind()).Enum()
    136 	}
    137 	if field.Enum() != nil {
    138 		p.TypeName = fullNameOf(field.Enum())
    139 	}
    140 	if field.Message() != nil {
    141 		p.TypeName = fullNameOf(field.Message())
    142 	}
    143 	if field.HasJSONName() {
    144 		// A bug in older versions of protoc would always populate the
    145 		// "json_name" option for extensions when it is meaningless.
    146 		// When it did so, it would always use the camel-cased field name.
    147 		if field.IsExtension() {
    148 			p.JsonName = proto.String(strs.JSONCamelCase(string(field.Name())))
    149 		} else {
    150 			p.JsonName = proto.String(field.JSONName())
    151 		}
    152 	}
    153 	if field.Syntax() == protoreflect.Proto3 && field.HasOptionalKeyword() {
    154 		p.Proto3Optional = proto.Bool(true)
    155 	}
    156 	if field.HasDefault() {
    157 		def, err := defval.Marshal(field.Default(), field.DefaultEnumValue(), field.Kind(), defval.Descriptor)
    158 		if err != nil && field.DefaultEnumValue() != nil {
    159 			def = string(field.DefaultEnumValue().Name()) // occurs for unresolved enum values
    160 		} else if err != nil {
    161 			panic(fmt.Sprintf("%v: %v", field.FullName(), err))
    162 		}
    163 		p.DefaultValue = proto.String(def)
    164 	}
    165 	if oneof := field.ContainingOneof(); oneof != nil {
    166 		p.OneofIndex = proto.Int32(int32(oneof.Index()))
    167 	}
    168 	return p
    169 }
    170 
    171 // ToOneofDescriptorProto copies a protoreflect.OneofDescriptor into a
    172 // google.protobuf.OneofDescriptorProto message.
    173 func ToOneofDescriptorProto(oneof protoreflect.OneofDescriptor) *descriptorpb.OneofDescriptorProto {
    174 	return &descriptorpb.OneofDescriptorProto{
    175 		Name:    proto.String(string(oneof.Name())),
    176 		Options: proto.Clone(oneof.Options()).(*descriptorpb.OneofOptions),
    177 	}
    178 }
    179 
    180 // ToEnumDescriptorProto copies a protoreflect.EnumDescriptor into a
    181 // google.protobuf.EnumDescriptorProto message.
    182 func ToEnumDescriptorProto(enum protoreflect.EnumDescriptor) *descriptorpb.EnumDescriptorProto {
    183 	p := &descriptorpb.EnumDescriptorProto{
    184 		Name:    proto.String(string(enum.Name())),
    185 		Options: proto.Clone(enum.Options()).(*descriptorpb.EnumOptions),
    186 	}
    187 	for i, values := 0, enum.Values(); i < values.Len(); i++ {
    188 		p.Value = append(p.Value, ToEnumValueDescriptorProto(values.Get(i)))
    189 	}
    190 	for i, ranges := 0, enum.ReservedRanges(); i < ranges.Len(); i++ {
    191 		rrange := ranges.Get(i)
    192 		p.ReservedRange = append(p.ReservedRange, &descriptorpb.EnumDescriptorProto_EnumReservedRange{
    193 			Start: proto.Int32(int32(rrange[0])),
    194 			End:   proto.Int32(int32(rrange[1])),
    195 		})
    196 	}
    197 	for i, names := 0, enum.ReservedNames(); i < names.Len(); i++ {
    198 		p.ReservedName = append(p.ReservedName, string(names.Get(i)))
    199 	}
    200 	return p
    201 }
    202 
    203 // ToEnumValueDescriptorProto copies a protoreflect.EnumValueDescriptor into a
    204 // google.protobuf.EnumValueDescriptorProto message.
    205 func ToEnumValueDescriptorProto(value protoreflect.EnumValueDescriptor) *descriptorpb.EnumValueDescriptorProto {
    206 	return &descriptorpb.EnumValueDescriptorProto{
    207 		Name:    proto.String(string(value.Name())),
    208 		Number:  proto.Int32(int32(value.Number())),
    209 		Options: proto.Clone(value.Options()).(*descriptorpb.EnumValueOptions),
    210 	}
    211 }
    212 
    213 // ToServiceDescriptorProto copies a protoreflect.ServiceDescriptor into a
    214 // google.protobuf.ServiceDescriptorProto message.
    215 func ToServiceDescriptorProto(service protoreflect.ServiceDescriptor) *descriptorpb.ServiceDescriptorProto {
    216 	p := &descriptorpb.ServiceDescriptorProto{
    217 		Name:    proto.String(string(service.Name())),
    218 		Options: proto.Clone(service.Options()).(*descriptorpb.ServiceOptions),
    219 	}
    220 	for i, methods := 0, service.Methods(); i < methods.Len(); i++ {
    221 		p.Method = append(p.Method, ToMethodDescriptorProto(methods.Get(i)))
    222 	}
    223 	return p
    224 }
    225 
    226 // ToMethodDescriptorProto copies a protoreflect.MethodDescriptor into a
    227 // google.protobuf.MethodDescriptorProto message.
    228 func ToMethodDescriptorProto(method protoreflect.MethodDescriptor) *descriptorpb.MethodDescriptorProto {
    229 	p := &descriptorpb.MethodDescriptorProto{
    230 		Name:       proto.String(string(method.Name())),
    231 		InputType:  fullNameOf(method.Input()),
    232 		OutputType: fullNameOf(method.Output()),
    233 		Options:    proto.Clone(method.Options()).(*descriptorpb.MethodOptions),
    234 	}
    235 	if method.IsStreamingClient() {
    236 		p.ClientStreaming = proto.Bool(true)
    237 	}
    238 	if method.IsStreamingServer() {
    239 		p.ServerStreaming = proto.Bool(true)
    240 	}
    241 	return p
    242 }
    243 
    244 func fullNameOf(d protoreflect.Descriptor) *string {
    245 	if d == nil {
    246 		return nil
    247 	}
    248 	if strings.HasPrefix(string(d.FullName()), unknownPrefix) {
    249 		return proto.String(string(d.FullName()[len(unknownPrefix):]))
    250 	}
    251 	return proto.String("." + string(d.FullName()))
    252 }