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_MISCELLANEOUS_HPP
20 #define REALM_UTIL_MISCELLANEOUS_HPP
22 #include <type_traits>
27 // FIXME: Replace this with std::add_const_t when we switch over to C++14 by
29 /// \brief Adds const qualifier, unless T already has the const qualifier
31 using add_const_t = typename std::add_const<T>::type;
33 // FIXME: Replace this with std::as_const when we switch over to C++17 by
35 /// \brief Forms an lvalue reference to const T
37 constexpr add_const_t<T>& as_const(T& v) noexcept
42 /// \brief Disallows rvalue arguments
44 add_const_t<T>& as_const(const T&&) = delete;
49 #endif // REALM_UTIL_MISCELLANEOUS_HPP