1 /*************************************************************************
3 * Copyright 2016 Realm Inc.
5 * Licensed under the Apache License, Version 2.0 (the "License");
6 * you may not use this file except in compliance with the License.
7 * You may obtain a copy of the License at
9 * http://www.apache.org/licenses/LICENSE-2.0
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
17 **************************************************************************/
19 #ifndef REALM_UTIL_SCOPE_EXIT_HPP
20 #define REALM_UTIL_SCOPE_EXIT_HPP
22 #include <type_traits>
25 #include <realm/util/optional.hpp>
33 explicit ScopeExit(const H& handler) noexcept(std::is_nothrow_copy_constructible<H>::value)
38 explicit ScopeExit(H&& handler) noexcept(std::is_nothrow_move_constructible<H>::value)
39 : m_handler(std::move(handler))
43 ScopeExit(ScopeExit&& se) noexcept(std::is_nothrow_move_constructible<H>::value)
44 : m_handler(std::move(se.m_handler))
55 static_assert(noexcept(std::declval<H>()()), "Handler must be nothrow executable");
56 static_assert(std::is_nothrow_destructible<H>::value, "Handler must be nothrow destructible");
59 util::Optional<H> m_handler;
63 ScopeExit<typename std::remove_reference<H>::type> make_scope_exit(H&& handler) noexcept(
64 noexcept(ScopeExit<typename std::remove_reference<H>::type>(std::forward<H>(handler))))
66 return ScopeExit<typename std::remove_reference<H>::type>(std::forward<H>(handler));
72 #endif // REALM_UTIL_SCOPE_EXIT_HPP