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// Copyright 2016 gRPC authors.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#include <google/protobuf/compiler/command_line_interface.h>
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#include <google/protobuf/compiler/command_line_interface.h>
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#include <google/protobuf/compiler/python/python_generator.h>
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#include "src/compiler/python_generator.h"
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#include "grpc_tools/main.h"
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#include <google/protobuf/compiler/code_generator.h>
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#include <google/protobuf/io/zero_copy_stream_impl_lite.h>
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#include <google/protobuf/compiler/importer.h>
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#include <google/protobuf/descriptor.h>
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// TODO: Clang format.
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#include <vector>
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#include <map>
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#include <string>
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#include <tuple>
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int protoc_main(int argc, char* argv[]) {
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google::protobuf::compiler::CommandLineInterface cli;
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cli.AllowPlugins("protoc-");
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// Proto2 Python
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google::protobuf::compiler::python::Generator py_generator;
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cli.RegisterGenerator("--python_out", &py_generator,
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"Generate Python source file.");
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// gRPC Python
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grpc_python_generator::GeneratorConfiguration grpc_py_config;
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grpc_python_generator::PythonGrpcGenerator grpc_py_generator(grpc_py_config);
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cli.RegisterGenerator("--grpc_python_out", &grpc_py_generator,
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"Generate Python source file.");
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return cli.Run(argc, argv);
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}
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// TODO: Figure out what Google best practices are for internal namespace like
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// this.
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namespace detail {
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// TODO: Consider deduping between this and command_line_interface.cc.
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// TODO: Separate declarations and definitions.
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class GeneratorContextImpl : public ::google::protobuf::compiler::GeneratorContext {
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public:
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GeneratorContextImpl(const std::vector<const ::google::protobuf::FileDescriptor*>& parsed_files,
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std::map<std::string, std::string>* files_out) :
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files_(files_out),
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parsed_files_(parsed_files) {}
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::google::protobuf::io::ZeroCopyOutputStream* Open(const std::string& filename) {
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// TODO(rbellevi): Learn not to dream impossible dreams. :(
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auto [iter, _] = files_->emplace(filename, "");
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return new ::google::protobuf::io::StringOutputStream(&(iter->second));
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}
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// NOTE: Equivalent to Open, since all files start out empty.
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::google::protobuf::io::ZeroCopyOutputStream* OpenForAppend(const std::string& filename) {
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return Open(filename);
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}
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// NOTE: Equivalent to Open, since all files start out empty.
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::google::protobuf::io::ZeroCopyOutputStream* OpenForInsert(
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const std::string& filename, const std::string& insertion_point) {
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return Open(filename);
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}
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void ListParsedFiles(std::vector<const ::google::protobuf::FileDescriptor*>* output) {
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*output = parsed_files_;
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}
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private:
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std::map<std::string, std::string>* files_;
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const std::vector<const ::google::protobuf::FileDescriptor*>& parsed_files_;
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};
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// TODO: Write a bunch of tests for exception propagation.
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class ErrorCollectorImpl : public ::google::protobuf::compiler::MultiFileErrorCollector {
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public:
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ErrorCollectorImpl(std::vector<ProtocError>* errors,
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std::vector<ProtocWarning>* warnings) :
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errors_(errors),
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warnings_(warnings) {}
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// implements ErrorCollector ---------------------------------------
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void AddError(const std::string& filename, int line, int column,
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const std::string& message) {
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errors_->emplace_back(filename, line, column, message);
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}
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void AddWarning(const std::string& filename, int line, int column,
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const std::string& message) {
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warnings_->emplace_back(filename, line, column, message);
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}
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private:
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std::vector<ProtocError>* errors_;
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std::vector<ProtocWarning>* warnings_;
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};
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} // end namespace detail
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int protoc_get_protos(char* protobuf_path,
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char* include_path,
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std::map<std::string, std::string>* files_out,
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std::vector<ProtocError>* errors,
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std::vector<ProtocWarning>* warnings)
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{
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std::cout << "C++ protoc_in_memory" << std::endl << std::flush;
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// TODO: Create parsed_files.
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std::string protobuf_filename(protobuf_path);
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std::unique_ptr<detail::ErrorCollectorImpl> error_collector(new detail::ErrorCollectorImpl(errors, warnings));
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std::unique_ptr<::google::protobuf::compiler::DiskSourceTree> source_tree(new ::google::protobuf::compiler::DiskSourceTree());
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// NOTE: This is equivalent to "--proto_path=."
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source_tree->MapPath("", ".");
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// TODO: Figure out more advanced virtual path mapping.
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::google::protobuf::compiler::Importer importer(source_tree.get(), error_collector.get());
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const ::google::protobuf::FileDescriptor* parsed_file = importer.Import(protobuf_filename);
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if (parsed_file == nullptr) {
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return 1;
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}
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detail::GeneratorContextImpl generator_context({parsed_file}, files_out);
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std::string error;
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::google::protobuf::compiler::python::Generator python_generator;
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python_generator.Generate(parsed_file, "", &generator_context, &error);
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// TODO: Come up with a better error reporting mechanism than this.
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return 0;
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}
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int protoc_get_services(char* protobuf_path,
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char* include_path,
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std::map<std::string, std::string>* files_out,
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std::vector<ProtocError>* errors,
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std::vector<ProtocWarning>* warnings)
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{
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// TODO: Create parsed_files.
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std::string protobuf_filename(protobuf_path);
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std::unique_ptr<detail::ErrorCollectorImpl> error_collector(new detail::ErrorCollectorImpl(errors, warnings));
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std::unique_ptr<::google::protobuf::compiler::DiskSourceTree> source_tree(new ::google::protobuf::compiler::DiskSourceTree());
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// NOTE: This is equivalent to "--proto_path=."
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source_tree->MapPath("", ".");
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// TODO: Figure out more advanced virtual path mapping.
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::google::protobuf::compiler::Importer importer(source_tree.get(), error_collector.get());
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const ::google::protobuf::FileDescriptor* parsed_file = importer.Import(protobuf_filename);
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if (parsed_file == nullptr) {
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return 1;
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}
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detail::GeneratorContextImpl generator_context({parsed_file}, files_out);
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std::string error;
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grpc_python_generator::GeneratorConfiguration grpc_py_config;
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grpc_python_generator::PythonGrpcGenerator grpc_py_generator(grpc_py_config);
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grpc_py_generator.Generate(parsed_file, "", &generator_context, &error);
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// TODO: Come up with a better error reporting mechanism than this.
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return 0;
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}
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