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/*
*
* Copyright 2015, 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 Objective C gRPC service interface out of Protobuf IDL.
#include <memory>
#include "src/compiler/config.h"
#include "src/compiler/objective_c_generator.h"
#include "src/compiler/objective_c_generator_helpers.h"
using ::grpc::string;
class ObjectiveCGrpcGenerator : public grpc::protobuf::compiler::CodeGenerator {
public:
ObjectiveCGrpcGenerator() {}
virtual ~ObjectiveCGrpcGenerator() {}
virtual bool Generate(const grpc::protobuf::FileDescriptor *file,
const string ¶meter,
grpc::protobuf::compiler::GeneratorContext *context,
string *error) const {
if (file->service_count() == 0) {
// No services. Do nothing.
return true;
}
string file_name = grpc_generator::FileNameInUpperCamel(file);
string prefix = file->options().objc_class_prefix();
{
// Generate .pbrpc.h
string imports = string("#import \"") + file_name + ".pbobjc.h\"\n"
"#import <gRPC/ProtoService.h>\n";
// TODO(jcanizales): Instead forward-declare the input and output types
// and import the files in the .pbrpc.m
string proto_imports;
for (int i = 0; i < file->dependency_count(); i++) {
string header = grpc_objective_c_generator::MessageHeaderName(
file->dependency(i));
proto_imports += string("#import \"") + header + "\"\n";
}
string declarations;
for (int i = 0; i < file->service_count(); i++) {
const grpc::protobuf::ServiceDescriptor *service = file->service(i);
declarations += grpc_objective_c_generator::GetHeader(service, prefix);
}
Write(context, file_name + ".pbrpc.h",
imports + '\n' + proto_imports + '\n' + declarations);
}
{
// Generate .pbrpc.m
string imports = string("#import \"") + file_name + ".pbrpc.h\"\n"
"#import <gRPC/GRXWriteable.h>\n"
"#import <gRPC/GRXWriter+Immediate.h>\n"
"#import <gRPC/ProtoRPC.h>\n";
string definitions;
for (int i = 0; i < file->service_count(); i++) {
const grpc::protobuf::ServiceDescriptor *service = file->service(i);
definitions += grpc_objective_c_generator::GetSource(service, prefix);
}
Write(context, file_name + ".pbrpc.m", imports + '\n' + definitions);
}
return true;
}
private:
// Write the given code into the given file.
void Write(grpc::protobuf::compiler::GeneratorContext *context,
const string &filename, const string &code) const {
std::unique_ptr<grpc::protobuf::io::ZeroCopyOutputStream> output(
context->Open(filename));
grpc::protobuf::io::CodedOutputStream coded_out(output.get());
coded_out.WriteRaw(code.data(), code.size());
}
};
int main(int argc, char *argv[]) {
ObjectiveCGrpcGenerator generator;
return grpc::protobuf::compiler::PluginMain(argc, argv, &generator);
}
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