123 lines
4.6 KiB
C++
123 lines
4.6 KiB
C++
/*
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*
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* Copyright 2015, Google Inc.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are
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* met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following disclaimer
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* in the documentation and/or other materials provided with the
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* distribution.
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* * Neither the name of Google Inc. nor the names of its
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* contributors may be used to endorse or promote products derived from
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* this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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*/
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// Generates Objective C gRPC service interface out of Protobuf IDL.
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#include <memory>
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#include "src/compiler/config.h"
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#include "src/compiler/objective_c_generator.h"
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#include "src/compiler/objective_c_generator_helpers.h"
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class ObjectiveCGrpcGenerator : public grpc::protobuf::compiler::CodeGenerator {
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public:
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ObjectiveCGrpcGenerator() {}
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virtual ~ObjectiveCGrpcGenerator() {}
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virtual bool Generate(const grpc::protobuf::FileDescriptor *file,
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const ::grpc::string ¶meter,
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grpc::protobuf::compiler::GeneratorContext *context,
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::grpc::string *error) const {
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if (file->service_count() == 0) {
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// No services. Do nothing.
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return true;
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}
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::grpc::string file_name = grpc_generator::FileNameInUpperCamel(file);
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::grpc::string prefix = file->options().objc_class_prefix();
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{
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// Generate .pbrpc.h
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::grpc::string imports = ::grpc::string("#import \"") + file_name +
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".pbobjc.h\"\n\n"
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"#import <ProtoRPC/ProtoService.h>\n"
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"#import <RxLibrary/GRXWriteable.h>\n"
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"#import <RxLibrary/GRXWriter.h>\n";
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// TODO(jcanizales): Instead forward-declare the input and output types
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// and import the files in the .pbrpc.m
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::grpc::string proto_imports;
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for (int i = 0; i < file->dependency_count(); i++) {
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::grpc::string header = grpc_objective_c_generator::MessageHeaderName(
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file->dependency(i));
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proto_imports += ::grpc::string("#import \"") + header + "\"\n";
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}
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::grpc::string declarations;
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for (int i = 0; i < file->service_count(); i++) {
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const grpc::protobuf::ServiceDescriptor *service = file->service(i);
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declarations += grpc_objective_c_generator::GetHeader(service);
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}
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Write(context, file_name + ".pbrpc.h",
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imports + '\n' + proto_imports + '\n' + declarations);
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}
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{
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// Generate .pbrpc.m
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::grpc::string imports = ::grpc::string("#import \"") + file_name +
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".pbrpc.h\"\n\n"
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"#import <ProtoRPC/ProtoRPC.h>\n"
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"#import <RxLibrary/GRXWriter+Immediate.h>\n";
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::grpc::string definitions;
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for (int i = 0; i < file->service_count(); i++) {
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const grpc::protobuf::ServiceDescriptor *service = file->service(i);
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definitions += grpc_objective_c_generator::GetSource(service);
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}
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Write(context, file_name + ".pbrpc.m", imports + '\n' + definitions);
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}
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return true;
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}
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private:
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// Write the given code into the given file.
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void Write(grpc::protobuf::compiler::GeneratorContext *context,
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const ::grpc::string &filename, const ::grpc::string &code) const {
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std::unique_ptr<grpc::protobuf::io::ZeroCopyOutputStream> output(
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context->Open(filename));
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grpc::protobuf::io::CodedOutputStream coded_out(output.get());
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coded_out.WriteRaw(code.data(), code.size());
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}
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};
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int main(int argc, char *argv[]) {
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ObjectiveCGrpcGenerator generator;
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return grpc::protobuf::compiler::PluginMain(argc, argv, &generator);
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}
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