0
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crazy-max_diun/vendor/google.golang.org/grpc/cmd/protoc-gen-go-grpc/grpc.go
dependabot[bot] 9830c08e30
chore(deps): bump google.golang.org/grpc/cmd/protoc-gen-go-grpc
Bumps [google.golang.org/grpc/cmd/protoc-gen-go-grpc](https://github.com/grpc/grpc-go) from 1.3.0 to 1.5.1.
- [Release notes](https://github.com/grpc/grpc-go/releases)
- [Commits](https://github.com/grpc/grpc-go/compare/v1.3.0...v1.5.1)

---
updated-dependencies:
- dependency-name: google.golang.org/grpc/cmd/protoc-gen-go-grpc
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>
2024-12-15 12:56:57 +00:00

635 lines
24 KiB
Go

/*
*
* Copyright 2020 gRPC authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
package main
import (
"fmt"
"strconv"
"strings"
"google.golang.org/protobuf/compiler/protogen"
"google.golang.org/protobuf/reflect/protoreflect"
"google.golang.org/protobuf/types/descriptorpb"
)
const (
contextPackage = protogen.GoImportPath("context")
grpcPackage = protogen.GoImportPath("google.golang.org/grpc")
codesPackage = protogen.GoImportPath("google.golang.org/grpc/codes")
statusPackage = protogen.GoImportPath("google.golang.org/grpc/status")
)
type serviceGenerateHelperInterface interface {
formatFullMethodSymbol(service *protogen.Service, method *protogen.Method) string
genFullMethods(g *protogen.GeneratedFile, service *protogen.Service)
generateClientStruct(g *protogen.GeneratedFile, clientName string)
generateNewClientDefinitions(g *protogen.GeneratedFile, service *protogen.Service, clientName string)
generateUnimplementedServerType(gen *protogen.Plugin, file *protogen.File, g *protogen.GeneratedFile, service *protogen.Service)
generateServerFunctions(gen *protogen.Plugin, file *protogen.File, g *protogen.GeneratedFile, service *protogen.Service, serverType string, serviceDescVar string)
formatHandlerFuncName(service *protogen.Service, hname string) string
}
type serviceGenerateHelper struct{}
func (serviceGenerateHelper) formatFullMethodSymbol(service *protogen.Service, method *protogen.Method) string {
return fmt.Sprintf("%s_%s_FullMethodName", service.GoName, method.GoName)
}
func (serviceGenerateHelper) genFullMethods(g *protogen.GeneratedFile, service *protogen.Service) {
if len(service.Methods) == 0 {
return
}
g.P("const (")
for _, method := range service.Methods {
fmSymbol := helper.formatFullMethodSymbol(service, method)
fmName := fmt.Sprintf("/%s/%s", service.Desc.FullName(), method.Desc.Name())
g.P(fmSymbol, ` = "`, fmName, `"`)
}
g.P(")")
g.P()
}
func (serviceGenerateHelper) generateClientStruct(g *protogen.GeneratedFile, clientName string) {
g.P("type ", unexport(clientName), " struct {")
g.P("cc ", grpcPackage.Ident("ClientConnInterface"))
g.P("}")
g.P()
}
func (serviceGenerateHelper) generateNewClientDefinitions(g *protogen.GeneratedFile, service *protogen.Service, clientName string) {
g.P("return &", unexport(clientName), "{cc}")
}
func (serviceGenerateHelper) generateUnimplementedServerType(gen *protogen.Plugin, file *protogen.File, g *protogen.GeneratedFile, service *protogen.Service) {
serverType := service.GoName + "Server"
mustOrShould := "must"
if !*requireUnimplemented {
mustOrShould = "should"
}
// Server Unimplemented struct for forward compatibility.
g.P("// Unimplemented", serverType, " ", mustOrShould, " be embedded to have")
g.P("// forward compatible implementations.")
g.P("//")
g.P("// NOTE: this should be embedded by value instead of pointer to avoid a nil")
g.P("// pointer dereference when methods are called.")
g.P("type Unimplemented", serverType, " struct {}")
g.P()
for _, method := range service.Methods {
nilArg := ""
if !method.Desc.IsStreamingClient() && !method.Desc.IsStreamingServer() {
nilArg = "nil,"
}
g.P("func (Unimplemented", serverType, ") ", serverSignature(g, method), "{")
g.P("return ", nilArg, statusPackage.Ident("Errorf"), "(", codesPackage.Ident("Unimplemented"), `, "method `, method.GoName, ` not implemented")`)
g.P("}")
}
if *requireUnimplemented {
g.P("func (Unimplemented", serverType, ") mustEmbedUnimplemented", serverType, "() {}")
}
g.P("func (Unimplemented", serverType, ") testEmbeddedByValue() {}")
g.P()
}
func (serviceGenerateHelper) generateServerFunctions(gen *protogen.Plugin, file *protogen.File, g *protogen.GeneratedFile, service *protogen.Service, serverType string, serviceDescVar string) {
// Server handler implementations.
handlerNames := make([]string, 0, len(service.Methods))
for _, method := range service.Methods {
hname := genServerMethod(gen, file, g, method, func(hname string) string {
return hname
})
handlerNames = append(handlerNames, hname)
}
genServiceDesc(file, g, serviceDescVar, serverType, service, handlerNames)
}
func (serviceGenerateHelper) formatHandlerFuncName(service *protogen.Service, hname string) string {
return hname
}
var helper serviceGenerateHelperInterface = serviceGenerateHelper{}
// FileDescriptorProto.package field number
const fileDescriptorProtoPackageFieldNumber = 2
// FileDescriptorProto.syntax field number
const fileDescriptorProtoSyntaxFieldNumber = 12
// generateFile generates a _grpc.pb.go file containing gRPC service definitions.
func generateFile(gen *protogen.Plugin, file *protogen.File) *protogen.GeneratedFile {
if len(file.Services) == 0 {
return nil
}
filename := file.GeneratedFilenamePrefix + "_grpc.pb.go"
g := gen.NewGeneratedFile(filename, file.GoImportPath)
// Attach all comments associated with the syntax field.
genLeadingComments(g, file.Desc.SourceLocations().ByPath(protoreflect.SourcePath{fileDescriptorProtoSyntaxFieldNumber}))
g.P("// Code generated by protoc-gen-go-grpc. DO NOT EDIT.")
g.P("// versions:")
g.P("// - protoc-gen-go-grpc v", version)
g.P("// - protoc ", protocVersion(gen))
if file.Proto.GetOptions().GetDeprecated() {
g.P("// ", file.Desc.Path(), " is a deprecated file.")
} else {
g.P("// source: ", file.Desc.Path())
}
g.P()
// Attach all comments associated with the package field.
genLeadingComments(g, file.Desc.SourceLocations().ByPath(protoreflect.SourcePath{fileDescriptorProtoPackageFieldNumber}))
g.P("package ", file.GoPackageName)
g.P()
generateFileContent(gen, file, g)
return g
}
func protocVersion(gen *protogen.Plugin) string {
v := gen.Request.GetCompilerVersion()
if v == nil {
return "(unknown)"
}
var suffix string
if s := v.GetSuffix(); s != "" {
suffix = "-" + s
}
return fmt.Sprintf("v%d.%d.%d%s", v.GetMajor(), v.GetMinor(), v.GetPatch(), suffix)
}
// generateFileContent generates the gRPC service definitions, excluding the package statement.
func generateFileContent(gen *protogen.Plugin, file *protogen.File, g *protogen.GeneratedFile) {
if len(file.Services) == 0 {
return
}
g.P("// This is a compile-time assertion to ensure that this generated file")
g.P("// is compatible with the grpc package it is being compiled against.")
if *useGenericStreams {
g.P("// Requires gRPC-Go v1.64.0 or later.")
g.P("const _ = ", grpcPackage.Ident("SupportPackageIsVersion9"))
} else {
g.P("// Requires gRPC-Go v1.62.0 or later.")
g.P("const _ = ", grpcPackage.Ident("SupportPackageIsVersion8")) // When changing, update version number above.
}
g.P()
for _, service := range file.Services {
genService(gen, file, g, service)
}
}
// genServiceComments copies the comments from the RPC proto definitions
// to the corresponding generated interface file.
func genServiceComments(g *protogen.GeneratedFile, service *protogen.Service) {
if service.Comments.Leading != "" {
// Add empty comment line to attach this service's comments to
// the godoc comments previously output for all services.
g.P("//")
g.P(strings.TrimSpace(service.Comments.Leading.String()))
}
}
func genService(gen *protogen.Plugin, file *protogen.File, g *protogen.GeneratedFile, service *protogen.Service) {
// Full methods constants.
helper.genFullMethods(g, service)
// Client interface.
clientName := service.GoName + "Client"
g.P("// ", clientName, " is the client API for ", service.GoName, " service.")
g.P("//")
g.P("// For semantics around ctx use and closing/ending streaming RPCs, please refer to https://pkg.go.dev/google.golang.org/grpc/?tab=doc#ClientConn.NewStream.")
// Copy comments from proto file.
genServiceComments(g, service)
if service.Desc.Options().(*descriptorpb.ServiceOptions).GetDeprecated() {
g.P("//")
g.P(deprecationComment)
}
g.AnnotateSymbol(clientName, protogen.Annotation{Location: service.Location})
g.P("type ", clientName, " interface {")
for _, method := range service.Methods {
g.AnnotateSymbol(clientName+"."+method.GoName, protogen.Annotation{Location: method.Location})
if method.Desc.Options().(*descriptorpb.MethodOptions).GetDeprecated() {
g.P(deprecationComment)
}
g.P(method.Comments.Leading,
clientSignature(g, method))
}
g.P("}")
g.P()
// Client structure.
helper.generateClientStruct(g, clientName)
// NewClient factory.
if service.Desc.Options().(*descriptorpb.ServiceOptions).GetDeprecated() {
g.P(deprecationComment)
}
g.P("func New", clientName, " (cc ", grpcPackage.Ident("ClientConnInterface"), ") ", clientName, " {")
helper.generateNewClientDefinitions(g, service, clientName)
g.P("}")
g.P()
var methodIndex, streamIndex int
// Client method implementations.
for _, method := range service.Methods {
if !method.Desc.IsStreamingServer() && !method.Desc.IsStreamingClient() {
// Unary RPC method
genClientMethod(gen, file, g, method, methodIndex)
methodIndex++
} else {
// Streaming RPC method
genClientMethod(gen, file, g, method, streamIndex)
streamIndex++
}
}
mustOrShould := "must"
if !*requireUnimplemented {
mustOrShould = "should"
}
// Server interface.
serverType := service.GoName + "Server"
g.P("// ", serverType, " is the server API for ", service.GoName, " service.")
g.P("// All implementations ", mustOrShould, " embed Unimplemented", serverType)
g.P("// for forward compatibility.")
// Copy comments from proto file.
genServiceComments(g, service)
if service.Desc.Options().(*descriptorpb.ServiceOptions).GetDeprecated() {
g.P("//")
g.P(deprecationComment)
}
g.AnnotateSymbol(serverType, protogen.Annotation{Location: service.Location})
g.P("type ", serverType, " interface {")
for _, method := range service.Methods {
g.AnnotateSymbol(serverType+"."+method.GoName, protogen.Annotation{Location: method.Location})
if method.Desc.Options().(*descriptorpb.MethodOptions).GetDeprecated() {
g.P(deprecationComment)
}
g.P(method.Comments.Leading,
serverSignature(g, method))
}
if *requireUnimplemented {
g.P("mustEmbedUnimplemented", serverType, "()")
}
g.P("}")
g.P()
// Server Unimplemented struct for forward compatibility.
helper.generateUnimplementedServerType(gen, file, g, service)
// Unsafe Server interface to opt-out of forward compatibility.
g.P("// Unsafe", serverType, " may be embedded to opt out of forward compatibility for this service.")
g.P("// Use of this interface is not recommended, as added methods to ", serverType, " will")
g.P("// result in compilation errors.")
g.P("type Unsafe", serverType, " interface {")
g.P("mustEmbedUnimplemented", serverType, "()")
g.P("}")
// Server registration.
if service.Desc.Options().(*descriptorpb.ServiceOptions).GetDeprecated() {
g.P(deprecationComment)
}
serviceDescVar := service.GoName + "_ServiceDesc"
g.P("func Register", service.GoName, "Server(s ", grpcPackage.Ident("ServiceRegistrar"), ", srv ", serverType, ") {")
g.P("// If the following call pancis, it indicates Unimplemented", serverType, " was")
g.P("// embedded by pointer and is nil. This will cause panics if an")
g.P("// unimplemented method is ever invoked, so we test this at initialization")
g.P("// time to prevent it from happening at runtime later due to I/O.")
g.P("if t, ok := srv.(interface { testEmbeddedByValue() }); ok {")
g.P("t.testEmbeddedByValue()")
g.P("}")
g.P("s.RegisterService(&", serviceDescVar, `, srv)`)
g.P("}")
g.P()
helper.generateServerFunctions(gen, file, g, service, serverType, serviceDescVar)
}
func clientSignature(g *protogen.GeneratedFile, method *protogen.Method) string {
s := method.GoName + "(ctx " + g.QualifiedGoIdent(contextPackage.Ident("Context"))
if !method.Desc.IsStreamingClient() {
s += ", in *" + g.QualifiedGoIdent(method.Input.GoIdent)
}
s += ", opts ..." + g.QualifiedGoIdent(grpcPackage.Ident("CallOption")) + ") ("
if !method.Desc.IsStreamingClient() && !method.Desc.IsStreamingServer() {
s += "*" + g.QualifiedGoIdent(method.Output.GoIdent)
} else {
if *useGenericStreams {
s += clientStreamInterface(g, method)
} else {
s += method.Parent.GoName + "_" + method.GoName + "Client"
}
}
s += ", error)"
return s
}
func clientStreamInterface(g *protogen.GeneratedFile, method *protogen.Method) string {
typeParam := g.QualifiedGoIdent(method.Input.GoIdent) + ", " + g.QualifiedGoIdent(method.Output.GoIdent)
if method.Desc.IsStreamingClient() && method.Desc.IsStreamingServer() {
return g.QualifiedGoIdent(grpcPackage.Ident("BidiStreamingClient")) + "[" + typeParam + "]"
} else if method.Desc.IsStreamingClient() {
return g.QualifiedGoIdent(grpcPackage.Ident("ClientStreamingClient")) + "[" + typeParam + "]"
} else { // i.e. if method.Desc.IsStreamingServer()
return g.QualifiedGoIdent(grpcPackage.Ident("ServerStreamingClient")) + "[" + g.QualifiedGoIdent(method.Output.GoIdent) + "]"
}
}
func genClientMethod(gen *protogen.Plugin, file *protogen.File, g *protogen.GeneratedFile, method *protogen.Method, index int) {
service := method.Parent
fmSymbol := helper.formatFullMethodSymbol(service, method)
if method.Desc.Options().(*descriptorpb.MethodOptions).GetDeprecated() {
g.P(deprecationComment)
}
g.P("func (c *", unexport(service.GoName), "Client) ", clientSignature(g, method), "{")
g.P("cOpts := append([]", grpcPackage.Ident("CallOption"), "{", grpcPackage.Ident("StaticMethod()"), "}, opts...)")
if !method.Desc.IsStreamingServer() && !method.Desc.IsStreamingClient() {
g.P("out := new(", method.Output.GoIdent, ")")
g.P(`err := c.cc.Invoke(ctx, `, fmSymbol, `, in, out, cOpts...)`)
g.P("if err != nil { return nil, err }")
g.P("return out, nil")
g.P("}")
g.P()
return
}
streamImpl := unexport(service.GoName) + method.GoName + "Client"
if *useGenericStreams {
typeParam := g.QualifiedGoIdent(method.Input.GoIdent) + ", " + g.QualifiedGoIdent(method.Output.GoIdent)
streamImpl = g.QualifiedGoIdent(grpcPackage.Ident("GenericClientStream")) + "[" + typeParam + "]"
}
serviceDescVar := service.GoName + "_ServiceDesc"
g.P("stream, err := c.cc.NewStream(ctx, &", serviceDescVar, ".Streams[", index, `], `, fmSymbol, `, cOpts...)`)
g.P("if err != nil { return nil, err }")
g.P("x := &", streamImpl, "{ClientStream: stream}")
if !method.Desc.IsStreamingClient() {
g.P("if err := x.ClientStream.SendMsg(in); err != nil { return nil, err }")
g.P("if err := x.ClientStream.CloseSend(); err != nil { return nil, err }")
}
g.P("return x, nil")
g.P("}")
g.P()
// Auxiliary types aliases, for backwards compatibility.
if *useGenericStreams {
g.P("// This type alias is provided for backwards compatibility with existing code that references the prior non-generic stream type by name.")
g.P("type ", service.GoName, "_", method.GoName, "Client = ", clientStreamInterface(g, method))
g.P()
return
}
// Stream auxiliary types and methods, if we're not taking advantage of the
// pre-implemented generic types and their methods.
genSend := method.Desc.IsStreamingClient()
genRecv := method.Desc.IsStreamingServer()
genCloseAndRecv := !method.Desc.IsStreamingServer()
g.P("type ", service.GoName, "_", method.GoName, "Client interface {")
if genSend {
g.P("Send(*", method.Input.GoIdent, ") error")
}
if genRecv {
g.P("Recv() (*", method.Output.GoIdent, ", error)")
}
if genCloseAndRecv {
g.P("CloseAndRecv() (*", method.Output.GoIdent, ", error)")
}
g.P(grpcPackage.Ident("ClientStream"))
g.P("}")
g.P()
g.P("type ", streamImpl, " struct {")
g.P(grpcPackage.Ident("ClientStream"))
g.P("}")
g.P()
if genSend {
g.P("func (x *", streamImpl, ") Send(m *", method.Input.GoIdent, ") error {")
g.P("return x.ClientStream.SendMsg(m)")
g.P("}")
g.P()
}
if genRecv {
g.P("func (x *", streamImpl, ") Recv() (*", method.Output.GoIdent, ", error) {")
g.P("m := new(", method.Output.GoIdent, ")")
g.P("if err := x.ClientStream.RecvMsg(m); err != nil { return nil, err }")
g.P("return m, nil")
g.P("}")
g.P()
}
if genCloseAndRecv {
g.P("func (x *", streamImpl, ") CloseAndRecv() (*", method.Output.GoIdent, ", error) {")
g.P("if err := x.ClientStream.CloseSend(); err != nil { return nil, err }")
g.P("m := new(", method.Output.GoIdent, ")")
g.P("if err := x.ClientStream.RecvMsg(m); err != nil { return nil, err }")
g.P("return m, nil")
g.P("}")
g.P()
}
}
func serverSignature(g *protogen.GeneratedFile, method *protogen.Method) string {
var reqArgs []string
ret := "error"
if !method.Desc.IsStreamingClient() && !method.Desc.IsStreamingServer() {
reqArgs = append(reqArgs, g.QualifiedGoIdent(contextPackage.Ident("Context")))
ret = "(*" + g.QualifiedGoIdent(method.Output.GoIdent) + ", error)"
}
if !method.Desc.IsStreamingClient() {
reqArgs = append(reqArgs, "*"+g.QualifiedGoIdent(method.Input.GoIdent))
}
if method.Desc.IsStreamingClient() || method.Desc.IsStreamingServer() {
if *useGenericStreams {
reqArgs = append(reqArgs, serverStreamInterface(g, method))
} else {
reqArgs = append(reqArgs, method.Parent.GoName+"_"+method.GoName+"Server")
}
}
return method.GoName + "(" + strings.Join(reqArgs, ", ") + ") " + ret
}
func genServiceDesc(file *protogen.File, g *protogen.GeneratedFile, serviceDescVar string, serverType string, service *protogen.Service, handlerNames []string) {
// Service descriptor.
g.P("// ", serviceDescVar, " is the ", grpcPackage.Ident("ServiceDesc"), " for ", service.GoName, " service.")
g.P("// It's only intended for direct use with ", grpcPackage.Ident("RegisterService"), ",")
g.P("// and not to be introspected or modified (even as a copy)")
g.P("var ", serviceDescVar, " = ", grpcPackage.Ident("ServiceDesc"), " {")
g.P("ServiceName: ", strconv.Quote(string(service.Desc.FullName())), ",")
g.P("HandlerType: (*", serverType, ")(nil),")
g.P("Methods: []", grpcPackage.Ident("MethodDesc"), "{")
for i, method := range service.Methods {
if method.Desc.IsStreamingClient() || method.Desc.IsStreamingServer() {
continue
}
g.P("{")
g.P("MethodName: ", strconv.Quote(string(method.Desc.Name())), ",")
g.P("Handler: ", handlerNames[i], ",")
g.P("},")
}
g.P("},")
g.P("Streams: []", grpcPackage.Ident("StreamDesc"), "{")
for i, method := range service.Methods {
if !method.Desc.IsStreamingClient() && !method.Desc.IsStreamingServer() {
continue
}
g.P("{")
g.P("StreamName: ", strconv.Quote(string(method.Desc.Name())), ",")
g.P("Handler: ", handlerNames[i], ",")
if method.Desc.IsStreamingServer() {
g.P("ServerStreams: true,")
}
if method.Desc.IsStreamingClient() {
g.P("ClientStreams: true,")
}
g.P("},")
}
g.P("},")
g.P("Metadata: \"", file.Desc.Path(), "\",")
g.P("}")
g.P()
}
func serverStreamInterface(g *protogen.GeneratedFile, method *protogen.Method) string {
typeParam := g.QualifiedGoIdent(method.Input.GoIdent) + ", " + g.QualifiedGoIdent(method.Output.GoIdent)
if method.Desc.IsStreamingClient() && method.Desc.IsStreamingServer() {
return g.QualifiedGoIdent(grpcPackage.Ident("BidiStreamingServer")) + "[" + typeParam + "]"
} else if method.Desc.IsStreamingClient() {
return g.QualifiedGoIdent(grpcPackage.Ident("ClientStreamingServer")) + "[" + typeParam + "]"
} else { // i.e. if method.Desc.IsStreamingServer()
return g.QualifiedGoIdent(grpcPackage.Ident("ServerStreamingServer")) + "[" + g.QualifiedGoIdent(method.Output.GoIdent) + "]"
}
}
func genServerMethod(gen *protogen.Plugin, file *protogen.File, g *protogen.GeneratedFile, method *protogen.Method, hnameFuncNameFormatter func(string) string) string {
service := method.Parent
hname := fmt.Sprintf("_%s_%s_Handler", service.GoName, method.GoName)
if !method.Desc.IsStreamingClient() && !method.Desc.IsStreamingServer() {
g.P("func ", hnameFuncNameFormatter(hname), "(srv interface{}, ctx ", contextPackage.Ident("Context"), ", dec func(interface{}) error, interceptor ", grpcPackage.Ident("UnaryServerInterceptor"), ") (interface{}, error) {")
g.P("in := new(", method.Input.GoIdent, ")")
g.P("if err := dec(in); err != nil { return nil, err }")
g.P("if interceptor == nil { return srv.(", service.GoName, "Server).", method.GoName, "(ctx, in) }")
g.P("info := &", grpcPackage.Ident("UnaryServerInfo"), "{")
g.P("Server: srv,")
fmSymbol := helper.formatFullMethodSymbol(service, method)
g.P("FullMethod: ", fmSymbol, ",")
g.P("}")
g.P("handler := func(ctx ", contextPackage.Ident("Context"), ", req interface{}) (interface{}, error) {")
g.P("return srv.(", service.GoName, "Server).", method.GoName, "(ctx, req.(*", method.Input.GoIdent, "))")
g.P("}")
g.P("return interceptor(ctx, in, info, handler)")
g.P("}")
g.P()
return hname
}
streamImpl := unexport(service.GoName) + method.GoName + "Server"
if *useGenericStreams {
typeParam := g.QualifiedGoIdent(method.Input.GoIdent) + ", " + g.QualifiedGoIdent(method.Output.GoIdent)
streamImpl = g.QualifiedGoIdent(grpcPackage.Ident("GenericServerStream")) + "[" + typeParam + "]"
}
g.P("func ", hnameFuncNameFormatter(hname), "(srv interface{}, stream ", grpcPackage.Ident("ServerStream"), ") error {")
if !method.Desc.IsStreamingClient() {
g.P("m := new(", method.Input.GoIdent, ")")
g.P("if err := stream.RecvMsg(m); err != nil { return err }")
g.P("return srv.(", service.GoName, "Server).", method.GoName, "(m, &", streamImpl, "{ServerStream: stream})")
} else {
g.P("return srv.(", service.GoName, "Server).", method.GoName, "(&", streamImpl, "{ServerStream: stream})")
}
g.P("}")
g.P()
// Auxiliary types aliases, for backwards compatibility.
if *useGenericStreams {
g.P("// This type alias is provided for backwards compatibility with existing code that references the prior non-generic stream type by name.")
g.P("type ", service.GoName, "_", method.GoName, "Server = ", serverStreamInterface(g, method))
g.P()
return hname
}
// Stream auxiliary types and methods, if we're not taking advantage of the
// pre-implemented generic types and their methods.
genSend := method.Desc.IsStreamingServer()
genSendAndClose := !method.Desc.IsStreamingServer()
genRecv := method.Desc.IsStreamingClient()
g.P("type ", service.GoName, "_", method.GoName, "Server interface {")
if genSend {
g.P("Send(*", method.Output.GoIdent, ") error")
}
if genSendAndClose {
g.P("SendAndClose(*", method.Output.GoIdent, ") error")
}
if genRecv {
g.P("Recv() (*", method.Input.GoIdent, ", error)")
}
g.P(grpcPackage.Ident("ServerStream"))
g.P("}")
g.P()
g.P("type ", streamImpl, " struct {")
g.P(grpcPackage.Ident("ServerStream"))
g.P("}")
g.P()
if genSend {
g.P("func (x *", streamImpl, ") Send(m *", method.Output.GoIdent, ") error {")
g.P("return x.ServerStream.SendMsg(m)")
g.P("}")
g.P()
}
if genSendAndClose {
g.P("func (x *", streamImpl, ") SendAndClose(m *", method.Output.GoIdent, ") error {")
g.P("return x.ServerStream.SendMsg(m)")
g.P("}")
g.P()
}
if genRecv {
g.P("func (x *", streamImpl, ") Recv() (*", method.Input.GoIdent, ", error) {")
g.P("m := new(", method.Input.GoIdent, ")")
g.P("if err := x.ServerStream.RecvMsg(m); err != nil { return nil, err }")
g.P("return m, nil")
g.P("}")
g.P()
}
return hname
}
func genLeadingComments(g *protogen.GeneratedFile, loc protoreflect.SourceLocation) {
for _, s := range loc.LeadingDetachedComments {
g.P(protogen.Comments(s))
g.P()
}
if s := loc.LeadingComments; s != "" {
g.P(protogen.Comments(s))
g.P()
}
}
const deprecationComment = "// Deprecated: Do not use."
func unexport(s string) string { return strings.ToLower(s[:1]) + s[1:] }