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// Protocol Buffers - Google's data interchange format
// Copyright 2008 Google Inc. All rights reserved.
// https://developers.google.com/protocol-buffers/
//
// 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.
// Author: kenton@google.com (Kenton Varda)
// Based on original Protocol Buffers design by
// Sanjay Ghemawat, Jeff Dean, and others.
#include "google/protobuf/compiler/java/generator.h"
#include <utility>
#include <vector>
#include <memory>
#include "y_absl/strings/str_format.h"
#include "google/protobuf/compiler/java/file.h"
#include "google/protobuf/compiler/java/helpers.h"
#include "google/protobuf/compiler/java/name_resolver.h"
#include "google/protobuf/compiler/java/options.h"
#include "google/protobuf/compiler/java/shared_code_generator.h"
#include "google/protobuf/descriptor.pb.h"
namespace google {
namespace protobuf {
namespace compiler {
namespace java {
JavaGenerator::JavaGenerator() {}
JavaGenerator::~JavaGenerator() {}
uint64_t JavaGenerator::GetSupportedFeatures() const {
return CodeGenerator::Feature::FEATURE_PROTO3_OPTIONAL;
}
bool JavaGenerator::Generate(const FileDescriptor* file,
const TProtoStringType& parameter,
GeneratorContext* context,
TProtoStringType* error) const {
// -----------------------------------------------------------------
// parse generator options
std::vector<std::pair<TProtoStringType, TProtoStringType> > options;
ParseGeneratorParameter(parameter, &options);
Options file_options;
file_options.opensource_runtime = opensource_runtime_;
for (auto& option : options) {
if (option.first == "output_list_file") {
file_options.output_list_file = option.second;
} else if (option.first == "immutable") {
file_options.generate_immutable_code = true;
} else if (option.first == "mutable") {
file_options.generate_mutable_code = true;
} else if (option.first == "shared") {
file_options.generate_shared_code = true;
} else if (option.first == "lite") {
// Note: Java Lite does not guarantee API/ABI stability. We may choose to
// break existing API in order to boost performance / reduce code size.
file_options.enforce_lite = true;
} else if (option.first == "annotate_code") {
file_options.annotate_code = true;
} else if (option.first == "annotation_list_file") {
file_options.annotation_list_file = option.second;
} else {
*error = y_absl::StrCat("Unknown generator option: ", option.first);
return false;
}
}
if (file_options.enforce_lite && file_options.generate_mutable_code) {
*error = "lite runtime generator option cannot be used with mutable API.";
return false;
}
// By default we generate immutable code and shared code for immutable API.
if (!file_options.generate_immutable_code &&
!file_options.generate_mutable_code &&
!file_options.generate_shared_code) {
file_options.generate_immutable_code = true;
file_options.generate_shared_code = true;
}
// -----------------------------------------------------------------
std::vector<TProtoStringType> all_files;
std::vector<TProtoStringType> all_annotations;
std::vector<std::unique_ptr<FileGenerator>> file_generators;
if (file_options.generate_immutable_code) {
file_generators.emplace_back(
std::make_unique<FileGenerator>(file, file_options,
/* immutable = */ true));
}
if (file_options.generate_mutable_code) {
file_generators.emplace_back(
std::make_unique<FileGenerator>(file, file_options,
/* mutable = */ false));
}
for (auto& file_generator : file_generators) {
if (!file_generator->Validate(error)) {
return false;
}
}
for (auto& file_generator : file_generators) {
TProtoStringType package_dir = JavaPackageToDir(file_generator->java_package());
TProtoStringType java_filename =
y_absl::StrCat(package_dir, file_generator->classname(), ".java");
all_files.push_back(java_filename);
TProtoStringType info_full_path = y_absl::StrCat(java_filename, ".pb.meta");
if (file_options.annotate_code) {
all_annotations.push_back(info_full_path);
}
// Generate main java file.
std::unique_ptr<io::ZeroCopyOutputStream> output(
context->Open(java_filename));
GeneratedCodeInfo annotations;
io::AnnotationProtoCollector<GeneratedCodeInfo> annotation_collector(
&annotations);
io::Printer printer(
output.get(), '$',
file_options.annotate_code ? &annotation_collector : NULL);
file_generator->Generate(&printer);
// Generate sibling files.
file_generator->GenerateSiblings(package_dir, context, &all_files,
&all_annotations);
if (file_options.annotate_code) {
std::unique_ptr<io::ZeroCopyOutputStream> info_output(
context->Open(info_full_path));
annotations.SerializeToZeroCopyStream(info_output.get());
}
}
file_generators.clear();
// Generate output list if requested.
if (!file_options.output_list_file.empty()) {
// Generate output list. This is just a simple text file placed in a
// deterministic location which lists the .java files being generated.
std::unique_ptr<io::ZeroCopyOutputStream> srclist_raw_output(
context->Open(file_options.output_list_file));
io::Printer srclist_printer(srclist_raw_output.get(), '$');
for (int i = 0; i < all_files.size(); i++) {
srclist_printer.Print("$filename$\n", "filename", all_files[i]);
}
}
if (!file_options.annotation_list_file.empty()) {
// Generate output list. This is just a simple text file placed in a
// deterministic location which lists the .java files being generated.
std::unique_ptr<io::ZeroCopyOutputStream> annotation_list_raw_output(
context->Open(file_options.annotation_list_file));
io::Printer annotation_list_printer(annotation_list_raw_output.get(), '$');
for (int i = 0; i < all_annotations.size(); i++) {
annotation_list_printer.Print("$filename$\n", "filename",
all_annotations[i]);
}
}
return true;
}
} // namespace java
} // namespace compiler
} // namespace protobuf
} // namespace google
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