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/**
* Copyright (C) 2017 MongoDB Inc.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License, version 3,
* as published by the Free Software Foundation.
*
* This program 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 Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* As a special exception, the copyright holders give permission to link the
* code of portions of this program with the OpenSSL library under certain
* conditions as described in each individual source file and distribute
* linked combinations including the program with the OpenSSL library. You
* must comply with the GNU Affero General Public License in all respects for
* all of the code used other than as permitted herein. If you modify file(s)
* with this exception, you may extend this exception to your version of the
* file(s), but you are not obligated to do so. If you do not wish to do so,
* delete this exception statement from your version. If you delete this
* exception statement from all source files in the program, then also delete
* it in the license file.
*/
#pragma once
#include <algorithm>
#include <iterator>
#include <memory>
#include <vector>
namespace mongo {
namespace transitional_tools_do_not_use {
template <typename T>
inline std::vector<T*> unspool_vector(const std::vector<std::unique_ptr<T>>& v) {
std::vector<T*> result;
result.reserve(v.size());
std::transform(
v.begin(), v.end(), std::back_inserter(result), [](const auto& p) { return p.get(); });
return result;
}
template <typename T>
inline std::vector<std::unique_ptr<T>> spool_vector(const std::vector<T*>& v) noexcept {
std::vector<std::unique_ptr<T>> result;
result.reserve(v.size());
std::transform(v.begin(), v.end(), std::back_inserter(result), [](const auto& p) {
return std::unique_ptr<T>{p};
});
return result;
}
template <typename T>
inline std::vector<T*> leak_vector(std::vector<std::unique_ptr<T>>& v) noexcept {
std::vector<T*> result;
result.reserve(v.size());
std::transform(
v.begin(), v.end(), std::back_inserter(result), [](auto& p) { return p.release(); });
return result;
}
} // namespace transitional_tools_do_not_use
} // namespace mongo
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