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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.
#ifndef GOOGLE_PROTOBUF_COMPILER_OBJECTIVEC_FILE_H__
#define GOOGLE_PROTOBUF_COMPILER_OBJECTIVEC_FILE_H__
#include <functional>
#include <memory>
#include <string>
#include <vector>
#include "y_absl/container/flat_hash_map.h"
#include "y_absl/container/flat_hash_set.h"
#include "google/protobuf/compiler/objectivec/enum.h"
#include "google/protobuf/compiler/objectivec/extension.h"
#include "google/protobuf/compiler/objectivec/message.h"
#include "google/protobuf/compiler/objectivec/options.h"
#include "google/protobuf/descriptor.h"
#include "google/protobuf/io/printer.h"
namespace google {
namespace protobuf {
namespace compiler {
namespace objectivec {
class FileGenerator {
public:
// Wrapper for some common state that is shared between file generations to
// improve performance when more than one file is generated at a time.
struct CommonState {
CommonState() = default;
std::vector<const FileDescriptor*>
CollectMinimalFileDepsContainingExtensions(const FileDescriptor* file);
private:
struct MinDepsEntry {
bool has_extensions;
// The minimal dependencies that cover all the dependencies with
// extensions.
y_absl::flat_hash_set<const FileDescriptor*> min_deps;
y_absl::flat_hash_set<const FileDescriptor*> transitive_deps;
};
const MinDepsEntry& CollectMinimalFileDepsContainingExtensionsInternal(
const FileDescriptor* file);
y_absl::flat_hash_map<const FileDescriptor*, MinDepsEntry> deps_info_cache;
};
FileGenerator(const FileDescriptor* file,
const GenerationOptions& generation_options,
CommonState& common_state);
~FileGenerator() = default;
FileGenerator(const FileGenerator&) = delete;
FileGenerator& operator=(const FileGenerator&) = delete;
void GenerateHeader(io::Printer* p) const;
void GenerateSource(io::Printer* p) const;
int NumEnums() const { return enum_generators_.size(); }
int NumMessages() const { return message_generators_.size(); }
void GenerateGlobalSource(io::Printer* p) const;
void GenerateSourceForMessage(int idx, io::Printer* p) const;
void GenerateSourceForEnums(io::Printer* p) const;
private:
enum class GeneratedFileType : int { kHeader, kSource };
struct GeneratedFileOptions {
std::vector<TProtoStringType> ignored_warnings;
std::vector<const FileDescriptor*> extra_files_to_import;
std::vector<TProtoStringType> extra_system_headers;
};
void GenerateFile(io::Printer* p, GeneratedFileType file_type,
const GeneratedFileOptions& file_options,
std::function<void()> body) const;
void GenerateFile(io::Printer* p, GeneratedFileType file_type,
std::function<void()> body) const {
GeneratedFileOptions file_options;
GenerateFile(p, file_type, file_options, body);
}
void PrintRootImplementation(
io::Printer* p,
const std::vector<const FileDescriptor*>& deps_with_extensions) const;
void PrintRootExtensionRegistryImplementation(
io::Printer* p,
const std::vector<const FileDescriptor*>& deps_with_extensions) const;
void PrintFileDescription(io::Printer* p) const;
bool HeadersUseForwardDeclarations() const {
// The bundled protos (WKTs) don't make use of forward declarations.
return !is_bundled_proto_ &&
generation_options_.headers_use_forward_declarations;
}
const FileDescriptor* file_;
const GenerationOptions& generation_options_;
mutable CommonState* common_state_;
const TProtoStringType root_class_name_;
const TProtoStringType file_description_name_;
const bool is_bundled_proto_;
std::vector<std::unique_ptr<EnumGenerator>> enum_generators_;
std::vector<std::unique_ptr<MessageGenerator>> message_generators_;
// The first file_->extension_count() are the extensions at file level scope.
std::vector<std::unique_ptr<ExtensionGenerator>> extension_generators_;
};
} // namespace objectivec
} // namespace compiler
} // namespace protobuf
} // namespace google
#endif // GOOGLE_PROTOBUF_COMPILER_OBJECTIVEC_FILE_H__
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