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/*
*
* 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.
*
*/
// Generates cpp gRPC service interface out of Protobuf IDL.
//
#include <memory>
#include <string>
#include "src/compiler/cpp_generator.h"
#include "src/compiler/cpp_generator_helpers.h"
#include <google/protobuf/descriptor.h>
#include <google/protobuf/descriptor.pb.h>
#include <google/protobuf/compiler/code_generator.h>
#include <google/protobuf/compiler/plugin.h>
#include <google/protobuf/io/coded_stream.h>
#include <google/protobuf/io/zero_copy_stream.h>
class CppGrpcGenerator : public google::protobuf::compiler::CodeGenerator {
public:
CppGrpcGenerator() {}
virtual ~CppGrpcGenerator() {}
virtual bool Generate(const google::protobuf::FileDescriptor *file,
const std::string ¶meter,
google::protobuf::compiler::GeneratorContext *context,
std::string *error) const {
if (file->options().cc_generic_services()) {
*error =
"cpp grpc proto compiler plugin does not work with generic "
"services. To generate cpp grpc APIs, please set \""
"cc_generic_service = false\".";
return false;
}
std::string file_name = grpc_cpp_generator::StripProto(file->name());
// Generate .pb.h
Insert(context, file_name + ".pb.h", "includes",
grpc_cpp_generator::GetHeaderIncludes(file));
Insert(context, file_name + ".pb.h", "namespace_scope",
grpc_cpp_generator::GetHeaderServices(file));
// Generate .pb.cc
Insert(context, file_name + ".pb.cc", "includes",
grpc_cpp_generator::GetSourceIncludes());
Insert(context, file_name + ".pb.cc", "namespace_scope",
grpc_cpp_generator::GetSourceServices(file));
return true;
}
private:
// Insert the given code into the given file at the given insertion point.
void Insert(google::protobuf::compiler::GeneratorContext *context,
const std::string &filename, const std::string &insertion_point,
const std::string &code) const {
std::unique_ptr<google::protobuf::io::ZeroCopyOutputStream> output(
context->OpenForInsert(filename, insertion_point));
google::protobuf::io::CodedOutputStream coded_out(output.get());
coded_out.WriteRaw(code.data(), code.size());
}
};
int main(int argc, char *argv[]) {
CppGrpcGenerator generator;
return google::protobuf::compiler::PluginMain(argc, argv, &generator);
}
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