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// Copyright (C) 2013-2018 ycmd contributors
//
// This file is part of ycmd.
//
// ycmd is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// ycmd is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with ycmd. If not, see <http://www.gnu.org/licenses/>.
#ifndef TRANSLATIONUNITSTORE_H_NGN0MCKB
#define TRANSLATIONUNITSTORE_H_NGN0MCKB
#include "TranslationUnit.h"
#include "UnsavedFile.h"
#include <memory>
#include <mutex>
#include <string>
#include <unordered_map>
#include <vector>
using CXIndex = void*;
namespace YouCompleteMe {
class TranslationUnitStore {
public:
YCM_EXPORT explicit TranslationUnitStore( CXIndex clang_index );
YCM_EXPORT ~TranslationUnitStore();
TranslationUnitStore( const TranslationUnitStore& ) = delete;
TranslationUnitStore& operator=( const TranslationUnitStore& ) = delete;
// You can even call this function for the same filename from multiple
// threads; the TU store will ensure only one TU is created.
YCM_EXPORT std::shared_ptr< TranslationUnit > GetOrCreate(
const std::string &filename,
const std::vector< UnsavedFile > &unsaved_files,
const std::vector< std::string > &flags );
std::shared_ptr< TranslationUnit > GetOrCreate(
const std::string &filename,
const std::vector< UnsavedFile > &unsaved_files,
const std::vector< std::string > &flags,
bool &translation_unit_created );
// Careful here! While GetOrCreate makes sure to take into account the flags
// for the file before returning a stored TU (if the flags changed, the TU is
// not really valid anymore and a new one should be built), this function does
// not. You might end up getting a stale TU.
std::shared_ptr< TranslationUnit > Get( const std::string &filename );
bool Remove( const std::string &filename );
void RemoveAll();
private:
// WARNING: This accesses filename_to_translation_unit_ without a lock!
std::shared_ptr< TranslationUnit > GetNoLock( const std::string &filename );
using TranslationUnitForFilename =
std::unordered_map< std::string, std::shared_ptr< TranslationUnit > >;
using FlagsHashForFilename = std::unordered_map< std::string, std::size_t >;
CXIndex clang_index_;
TranslationUnitForFilename filename_to_translation_unit_;
FlagsHashForFilename filename_to_flags_hash_;
std::mutex filename_to_translation_unit_and_flags_mutex_;
};
} // namespace YouCompleteMe
#endif // TRANSLATIONUNITSTORE_H_NGN0MCKB
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