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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.
#include "google/protobuf/compiler/java/kotlin_generator.h"
#include "google/protobuf/compiler/code_generator.h"
#include "google/protobuf/compiler/java/file.h"
#include "google/protobuf/compiler/java/generator.h"
#include "google/protobuf/compiler/java/helpers.h"
#include "google/protobuf/compiler/java/options.h"
namespace google {
namespace protobuf {
namespace compiler {
namespace java {
KotlinGenerator::KotlinGenerator() {}
KotlinGenerator::~KotlinGenerator() {}
uint64_t KotlinGenerator::GetSupportedFeatures() const {
return CodeGenerator::Feature::FEATURE_PROTO3_OPTIONAL;
}
bool KotlinGenerator::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;
for (auto& option : options) {
if (option.first == "output_list_file") {
file_options.output_list_file = option.second;
} else if (option.first == "immutable") {
// Note: the option is considered always set regardless of the input.
file_options.generate_immutable_code = true;
} else if (option.first == "mutable") {
*error = "Mutable not supported by Kotlin generator";
return false;
} else if (option.first == "shared") {
// Note: the option is considered always set regardless of the input.
file_options.generate_shared_code = true;
} else if (option.first == "lite") {
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;
}
}
// We only support generation of immutable code so we do it.
file_options.generate_immutable_code = true;
file_options.generate_shared_code = true;
std::vector<TProtoStringType> all_files;
std::vector<TProtoStringType> all_annotations;
std::unique_ptr<FileGenerator> file_generator(
new FileGenerator(file, file_options, /* immutable_api = */ true));
if (!file_generator || !file_generator->Validate(error)) {
return false;
}
auto open_file = [context](const TProtoStringType& filename) {
return std::unique_ptr<io::ZeroCopyOutputStream>(context->Open(filename));
};
TProtoStringType package_dir = JavaPackageToDir(file_generator->java_package());
TProtoStringType kotlin_filename =
y_absl::StrCat(package_dir, file_generator->GetKotlinClassname(), ".kt");
all_files.push_back(kotlin_filename);
TProtoStringType info_full_path = y_absl::StrCat(kotlin_filename, ".pb.meta");
if (file_options.annotate_code) {
all_annotations.push_back(info_full_path);
}
// Generate main kotlin file.
auto output = open_file(kotlin_filename);
GeneratedCodeInfo annotations;
io::AnnotationProtoCollector<GeneratedCodeInfo> annotation_collector(
&annotations);
io::Printer printer(
output.get(), '$',
file_options.annotate_code ? &annotation_collector : nullptr);
file_generator->GenerateKotlin(&printer);
file_generator->GenerateKotlinSiblings(package_dir, context, &all_files,
&all_annotations);
if (file_options.annotate_code) {
auto info_output = open_file(info_full_path);
annotations.SerializeToZeroCopyStream(info_output.get());
}
// Generate output list if requested.
if (!file_options.output_list_file.empty()) {
// Generate output list. This is just a simple text file placed in a
// deterministic location which lists the .kt files being generated.
auto srclist_raw_output = open_file(file_options.output_list_file);
io::Printer srclist_printer(srclist_raw_output.get(), '$');
for (auto& all_file : all_files) {
srclist_printer.Print("$filename$\n", "filename", all_file);
}
}
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 .kt files being generated.
auto annotation_list_raw_output =
open_file(file_options.annotation_list_file);
io::Printer annotation_list_printer(annotation_list_raw_output.get(), '$');
for (auto& all_annotation : all_annotations) {
annotation_list_printer.Print("$filename$\n", "filename", all_annotation);
}
}
return true;
}
} // namespace java
} // namespace compiler
} // namespace protobuf
} // namespace google
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