diff options
Diffstat (limited to 'src/compiler/go_generator.cc')
| -rw-r--r-- | src/compiler/go_generator.cc | 530 |
1 files changed, 0 insertions, 530 deletions
diff --git a/src/compiler/go_generator.cc b/src/compiler/go_generator.cc deleted file mode 100644 index 84aa27668e..0000000000 --- a/src/compiler/go_generator.cc +++ /dev/null @@ -1,530 +0,0 @@ -/* - * - * Copyright 2014, Google Inc. - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions are - * met: - * - * * Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * * Redistributions in binary form must reproduce the above - * copyright notice, this list of conditions and the following disclaimer - * in the documentation and/or other materials provided with the - * distribution. - * * Neither the name of Google Inc. nor the names of its - * contributors may be used to endorse or promote products derived from - * this software without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR - * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT - * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, - * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT - * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, - * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY - * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE - * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - * - */ - -#include "src/compiler/go_generator.h" - -#include <cctype> - -#include <google/protobuf/io/printer.h> -#include <google/protobuf/io/zero_copy_stream_impl_lite.h> -#include <google/protobuf/descriptor.pb.h> -#include <google/protobuf/descriptor.h> - -using namespace std; - -namespace grpc_go_generator { - -bool NoStreaming(const google::protobuf::MethodDescriptor* method) { - return !method->client_streaming() && !method->server_streaming(); -} - -bool ClientOnlyStreaming(const google::protobuf::MethodDescriptor* method) { - return method->client_streaming() && !method->server_streaming(); -} - -bool ServerOnlyStreaming(const google::protobuf::MethodDescriptor* method) { - return !method->client_streaming() && method->server_streaming(); -} - -bool BidiStreaming(const google::protobuf::MethodDescriptor* method) { - return method->client_streaming() && method->server_streaming(); -} - -bool HasClientOnlyStreaming(const google::protobuf::FileDescriptor* file) { - for (int i = 0; i < file->service_count(); i++) { - for (int j = 0; j < file->service(i)->method_count(); j++) { - if (ClientOnlyStreaming(file->service(i)->method(j))) { - return true; - } - } - } - return false; -} - -string LowerCaseService(const string& service) { - string ret = service; - if (!ret.empty() && ret[0] >= 'A' && ret[0] <= 'Z') { - ret[0] = ret[0] - 'A' + 'a'; - } - return ret; -} - -void PrintClientMethodDef(google::protobuf::io::Printer* printer, - const google::protobuf::MethodDescriptor* method, - map<string, string>* vars) { - (*vars)["Method"] = method->name(); - (*vars)["Request"] = method->input_type()->name(); - (*vars)["Response"] = method->output_type()->name(); - if (NoStreaming(method)) { - printer->Print(*vars, - "\t$Method$(ctx context.Context, in *$Request$, opts " - "...rpc.CallOption) " - "(*$Response$, error)\n"); - } else if (BidiStreaming(method)) { - printer->Print(*vars, - "\t$Method$(ctx context.Context, opts ...rpc.CallOption) " - "($Service$_$Method$Client, error)\n"); - } else if (ServerOnlyStreaming(method)) { - printer->Print( - *vars, - "\t$Method$(ctx context.Context, m *$Request$, opts ...rpc.CallOption) " - "($Service$_$Method$Client, error)\n"); - } else if (ClientOnlyStreaming(method)) { - printer->Print(*vars, - "\t$Method$(ctx context.Context, opts ...rpc.CallOption) " - "($Service$_$Method$Client, error)\n"); - } -} - -void PrintClientMethodImpl(google::protobuf::io::Printer* printer, - const google::protobuf::MethodDescriptor* method, - map<string, string>* vars) { - (*vars)["Method"] = method->name(); - (*vars)["Request"] = method->input_type()->name(); - (*vars)["Response"] = method->output_type()->name(); - - if (NoStreaming(method)) { - printer->Print( - *vars, - "func (c *$ServiceStruct$Client) $Method$(ctx context.Context, " - "in *$Request$, opts ...rpc.CallOption) (*$Response$, error) {\n"); - printer->Print(*vars, "\tout := new($Response$)\n"); - printer->Print(*vars, - "\terr := rpc.Invoke(ctx, \"/$Package$$Service$/$Method$\", " - "in, out, c.cc, opts...)\n"); - printer->Print("\tif err != nil {\n"); - printer->Print("\t\treturn nil, err\n"); - printer->Print("\t}\n"); - printer->Print("\treturn out, nil\n"); - printer->Print("}\n\n"); - } else if (BidiStreaming(method)) { - printer->Print( - *vars, - "func (c *$ServiceStruct$Client) $Method$(ctx context.Context, opts " - "...rpc.CallOption) ($Service$_$Method$Client, error) {\n" - "\tstream, err := rpc.NewClientStream(ctx, c.cc, " - "\"/$Package$$Service$/$Method$\", opts...)\n" - "\tif err != nil {\n" - "\t\treturn nil, err\n" - "\t}\n" - "\treturn &$ServiceStruct$$Method$Client{stream}, nil\n" - "}\n\n"); - printer->Print(*vars, - "type $Service$_$Method$Client interface {\n" - "\tSend(*$Request$) error\n" - "\tRecv() (*$Response$, error)\n" - "\trpc.ClientStream\n" - "}\n\n"); - printer->Print(*vars, - "type $ServiceStruct$$Method$Client struct {\n" - "\trpc.ClientStream\n" - "}\n\n"); - printer->Print( - *vars, - "func (x *$ServiceStruct$$Method$Client) Send(m *$Request$) error {\n" - "\treturn x.ClientStream.SendProto(m)\n" - "}\n\n"); - printer->Print( - *vars, - "func (x *$ServiceStruct$$Method$Client) Recv() (*$Response$, error) " - "{\n" - "\tm := new($Response$)\n" - "\tif err := x.ClientStream.RecvProto(m); err != nil {\n" - "\t\treturn nil, err\n" - "\t}\n" - "\treturn m, nil\n" - "}\n\n"); - } else if (ServerOnlyStreaming(method)) { - printer->Print( - *vars, - "func (c *$ServiceStruct$Client) $Method$(ctx context.Context, m " - "*$Request$, " - "opts ...rpc.CallOption) ($Service$_$Method$Client, error) {\n" - "\tstream, err := rpc.NewClientStream(ctx, c.cc, " - "\"/$Package$$Service$/$Method$\", opts...)\n" - "\tif err != nil {\n" - "\t\treturn nil, err\n" - "\t}\n" - "\tx := &$ServiceStruct$$Method$Client{stream}\n" - "\tif err := x.ClientStream.SendProto(m); err != nil {\n" - "\t\treturn nil, err\n" - "\t}\n" - "\tif err := x.ClientStream.CloseSend(); err != nil {\n" - "\t\treturn nil, err\n" - "\t}\n" - "\treturn x, nil\n" - "}\n\n"); - printer->Print(*vars, - "type $Service$_$Method$Client interface {\n" - "\tRecv() (*$Response$, error)\n" - "\trpc.ClientStream\n" - "}\n\n"); - printer->Print(*vars, - "type $ServiceStruct$$Method$Client struct {\n" - "\trpc.ClientStream\n" - "}\n\n"); - printer->Print( - *vars, - "func (x *$ServiceStruct$$Method$Client) Recv() (*$Response$, error) " - "{\n" - "\tm := new($Response$)\n" - "\tif err := x.ClientStream.RecvProto(m); err != nil {\n" - "\t\treturn nil, err\n" - "\t}\n" - "\treturn m, nil\n" - "}\n\n"); - } else if (ClientOnlyStreaming(method)) { - printer->Print( - *vars, - "func (c *$ServiceStruct$Client) $Method$(ctx context.Context, opts " - "...rpc.CallOption) ($Service$_$Method$Client, error) {\n" - "\tstream, err := rpc.NewClientStream(ctx, c.cc, " - "\"/$Package$$Service$/$Method$\", opts...)\n" - "\tif err != nil {\n" - "\t\treturn nil, err\n" - "\t}\n" - "\treturn &$ServiceStruct$$Method$Client{stream}, nil\n" - "}\n\n"); - printer->Print(*vars, - "type $Service$_$Method$Client interface {\n" - "\tSend(*$Request$) error\n" - "\tCloseAndRecv() (*$Response$, error)\n" - "\trpc.ClientStream\n" - "}\n\n"); - printer->Print(*vars, - "type $ServiceStruct$$Method$Client struct {\n" - "\trpc.ClientStream\n" - "}\n\n"); - printer->Print( - *vars, - "func (x *$ServiceStruct$$Method$Client) Send(m *$Request$) error {\n" - "\treturn x.ClientStream.SendProto(m)\n" - "}\n\n"); - printer->Print( - *vars, - "func (x *$ServiceStruct$$Method$Client) CloseAndRecv() (*$Response$, " - "error) {\n" - "\tif err := x.ClientStream.CloseSend(); err != nil {\n" - "\t\treturn nil, err\n" - "\t}\n" - "\tm := new($Response$)\n" - "\tif err := x.ClientStream.RecvProto(m); err != nil {\n" - "\t\treturn nil, err\n" - "\t}\n" - "\t// Read EOF.\n" - "\tif err := x.ClientStream.RecvProto(m); err == io.EOF {\n" - "\t\treturn m, io.EOF\n" - "\t}\n" - "\t// gRPC protocol violation.\n" - "\treturn m, fmt.Errorf(\"Violate gRPC client streaming protocol: no " - "EOF after the response.\")\n" - "}\n\n"); - } -} - -void PrintClient(google::protobuf::io::Printer* printer, - const google::protobuf::ServiceDescriptor* service, - map<string, string>* vars) { - (*vars)["Service"] = service->name(); - (*vars)["ServiceStruct"] = LowerCaseService(service->name()); - printer->Print(*vars, "type $Service$Client interface {\n"); - for (int i = 0; i < service->method_count(); ++i) { - PrintClientMethodDef(printer, service->method(i), vars); - } - printer->Print("}\n\n"); - - printer->Print(*vars, - "type $ServiceStruct$Client struct {\n" - "\tcc *rpc.ClientConn\n" - "}\n\n"); - printer->Print( - *vars, - "func New$Service$Client(cc *rpc.ClientConn) $Service$Client {\n" - "\treturn &$ServiceStruct$Client{cc}\n" - "}\n\n"); - for (int i = 0; i < service->method_count(); ++i) { - PrintClientMethodImpl(printer, service->method(i), vars); - } -} - -void PrintServerMethodDef(google::protobuf::io::Printer* printer, - const google::protobuf::MethodDescriptor* method, - map<string, string>* vars) { - (*vars)["Method"] = method->name(); - (*vars)["Request"] = method->input_type()->name(); - (*vars)["Response"] = method->output_type()->name(); - if (NoStreaming(method)) { - printer->Print( - *vars, - "\t$Method$(context.Context, *$Request$) (*$Response$, error)\n"); - } else if (BidiStreaming(method)) { - printer->Print(*vars, "\t$Method$($Service$_$Method$Server) error\n"); - } else if (ServerOnlyStreaming(method)) { - printer->Print(*vars, - "\t$Method$(*$Request$, $Service$_$Method$Server) error\n"); - } else if (ClientOnlyStreaming(method)) { - printer->Print(*vars, "\t$Method$($Service$_$Method$Server) error\n"); - } -} - -void PrintServerHandler(google::protobuf::io::Printer* printer, - const google::protobuf::MethodDescriptor* method, - map<string, string>* vars) { - (*vars)["Method"] = method->name(); - (*vars)["Request"] = method->input_type()->name(); - (*vars)["Response"] = method->output_type()->name(); - if (NoStreaming(method)) { - printer->Print( - *vars, - "func _$Service$_$Method$_Handler(srv interface{}, ctx context.Context," - " buf []byte) (proto.Message, error) {\n"); - printer->Print(*vars, "\tin := new($Request$)\n"); - printer->Print("\tif err := proto.Unmarshal(buf, in); err != nil {\n"); - printer->Print("\t\treturn nil, err\n"); - printer->Print("\t}\n"); - printer->Print(*vars, - "\tout, err := srv.($Service$Server).$Method$(ctx, in)\n"); - printer->Print("\tif err != nil {\n"); - printer->Print("\t\treturn nil, err\n"); - printer->Print("\t}\n"); - printer->Print("\treturn out, nil\n"); - printer->Print("}\n\n"); - } else if (BidiStreaming(method)) { - printer->Print( - *vars, - "func _$Service$_$Method$_Handler(srv interface{}, stream rpc.Stream) " - "error {\n" - "\treturn srv.($Service$Server).$Method$(&$ServiceStruct$$Method$Server" - "{stream})\n" - "}\n\n"); - printer->Print(*vars, - "type $Service$_$Method$Server interface {\n" - "\tSend(*$Response$) error\n" - "\tRecv() (*$Request$, error)\n" - "\trpc.Stream\n" - "}\n\n"); - printer->Print(*vars, - "type $ServiceStruct$$Method$Server struct {\n" - "\trpc.Stream\n" - "}\n\n"); - printer->Print( - *vars, - "func (x *$ServiceStruct$$Method$Server) Send(m *$Response$) error {\n" - "\treturn x.Stream.SendProto(m)\n" - "}\n\n"); - printer->Print( - *vars, - "func (x *$ServiceStruct$$Method$Server) Recv() (*$Request$, error) " - "{\n" - "\tm := new($Request$)\n" - "\tif err := x.Stream.RecvProto(m); err != nil {\n" - "\t\treturn nil, err\n" - "\t}\n" - "\treturn m, nil\n" - "}\n\n"); - } else if (ServerOnlyStreaming(method)) { - printer->Print( - *vars, - "func _$Service$_$Method$_Handler(srv interface{}, stream rpc.Stream) " - "error {\n" - "\tm := new($Request$)\n" - "\tif err := stream.RecvProto(m); err != nil {\n" - "\t\treturn err\n" - "\t}\n" - "\treturn srv.($Service$Server).$Method$(m, " - "&$ServiceStruct$$Method$Server{stream})\n" - "}\n\n"); - printer->Print(*vars, - "type $Service$_$Method$Server interface {\n" - "\tSend(*$Response$) error\n" - "\trpc.Stream\n" - "}\n\n"); - printer->Print(*vars, - "type $ServiceStruct$$Method$Server struct {\n" - "\trpc.Stream\n" - "}\n\n"); - printer->Print( - *vars, - "func (x *$ServiceStruct$$Method$Server) Send(m *$Response$) error {\n" - "\treturn x.Stream.SendProto(m)\n" - "}\n\n"); - } else if (ClientOnlyStreaming(method)) { - printer->Print( - *vars, - "func _$Service$_$Method$_Handler(srv interface{}, stream rpc.Stream) " - "error {\n" - "\treturn srv.($Service$Server).$Method$(&$ServiceStruct$$Method$Server" - "{stream})\n" - "}\n\n"); - printer->Print(*vars, - "type $Service$_$Method$Server interface {\n" - "\tSendAndClose(*$Response$) error\n" - "\tRecv() (*$Request$, error)\n" - "\trpc.Stream\n" - "}\n\n"); - printer->Print(*vars, - "type $ServiceStruct$$Method$Server struct {\n" - "\trpc.Stream\n" - "}\n\n"); - printer->Print( - *vars, - "func (x *$ServiceStruct$$Method$Server) SendAndClose(m *$Response$) " - "error {\n" - "\tif err := x.Stream.SendProto(m); err != nil {\n" - "\t\treturn err\n" - "\t}\n" - "\treturn nil\n" - "}\n\n"); - printer->Print( - *vars, - "func (x *$ServiceStruct$$Method$Server) Recv() (*$Request$, error) {\n" - "\tm := new($Request$)\n" - "\tif err := x.Stream.RecvProto(m); err != nil {\n" - "\t\treturn nil, err\n" - "\t}\n" - "\treturn m, nil\n" - "}\n\n"); - } -} - -void PrintServerMethodDesc(google::protobuf::io::Printer* printer, - const google::protobuf::MethodDescriptor* method, - map<string, string>* vars) { - (*vars)["Method"] = method->name(); - printer->Print("\t\t{\n"); - printer->Print(*vars, "\t\t\tMethodName:\t\"$Method$\",\n"); - printer->Print(*vars, "\t\t\tHandler:\t_$Service$_$Method$_Handler,\n"); - printer->Print("\t\t},\n"); -} - -void PrintServerStreamingMethodDesc( - google::protobuf::io::Printer* printer, - const google::protobuf::MethodDescriptor* method, - map<string, string>* vars) { - (*vars)["Method"] = method->name(); - printer->Print("\t\t{\n"); - printer->Print(*vars, "\t\t\tStreamName:\t\"$Method$\",\n"); - printer->Print(*vars, "\t\t\tHandler:\t_$Service$_$Method$_Handler,\n"); - printer->Print("\t\t},\n"); -} - -void PrintServer(google::protobuf::io::Printer* printer, - const google::protobuf::ServiceDescriptor* service, - map<string, string>* vars) { - (*vars)["Service"] = service->name(); - printer->Print(*vars, "type $Service$Server interface {\n"); - for (int i = 0; i < service->method_count(); ++i) { - PrintServerMethodDef(printer, service->method(i), vars); - } - printer->Print("}\n\n"); - - printer->Print(*vars, - "func RegisterService(s *rpc.Server, srv $Service$Server) {\n" - "\ts.RegisterService(&_$Service$_serviceDesc, srv)\n" - "}\n\n"); - - for (int i = 0; i < service->method_count(); ++i) { - PrintServerHandler(printer, service->method(i), vars); - } - - printer->Print(*vars, - "var _$Service$_serviceDesc = rpc.ServiceDesc{\n" - "\tServiceName: \"$Package$$Service$\",\n" - "\tHandlerType: (*$Service$Server)(nil),\n" - "\tMethods: []rpc.MethodDesc{\n"); - for (int i = 0; i < service->method_count(); ++i) { - if (NoStreaming(service->method(i))) { - PrintServerMethodDesc(printer, service->method(i), vars); - } - } - printer->Print("\t},\n"); - - printer->Print("\tStreams: []rpc.StreamDesc{\n"); - for (int i = 0; i < service->method_count(); ++i) { - if (!NoStreaming(service->method(i))) { - PrintServerStreamingMethodDesc(printer, service->method(i), vars); - } - } - printer->Print( - "\t},\n" - "}\n\n"); -} - -std::string BadToUnderscore(std::string str) { - for (unsigned i = 0; i < str.size(); ++i) { - if (!std::isalnum(str[i])) { - str[i] = '_'; - } - } - return str; -} - -string GetServices(const google::protobuf::FileDescriptor* file) { - string output; - google::protobuf::io::StringOutputStream output_stream(&output); - google::protobuf::io::Printer printer(&output_stream, '$'); - map<string, string> vars; - - string package_name = !file->options().go_package().empty() - ? file->options().go_package() - : file->package(); - vars["PackageName"] = BadToUnderscore(package_name); - printer.Print(vars, "package $PackageName$\n\n"); - printer.Print("import (\n"); - if (HasClientOnlyStreaming(file)) { - printer.Print( - "\t\"fmt\"\n" - "\t\"io\"\n"); - } - printer.Print( - "\t\"google/net/grpc/go/rpc\"\n" - "\tcontext \"google/third_party/golang/go_net/context/context\"\n" - "\tproto \"google/net/proto2/go/proto\"\n" - ")\n\n"); - - // $Package$ is used to fully qualify method names. - vars["Package"] = file->package(); - if (!file->package().empty()) { - vars["Package"].append("."); - } - - for (int i = 0; i < file->service_count(); ++i) { - PrintClient(&printer, file->service(0), &vars); - printer.Print("\n"); - PrintServer(&printer, file->service(0), &vars); - printer.Print("\n"); - } - return output; -} - -} // namespace grpc_go_generator |