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94 lines
3.1 KiB
C++
94 lines
3.1 KiB
C++
/*
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* Copyright (c) 2015-2016, Roland Bock
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without modification,
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* are permitted provided that the following conditions are met:
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*
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* Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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*
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* Redistributions in binary form must reproduce the above copyright notice, this
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* list of conditions and the following disclaimer in the documentation and/or
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* other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
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* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
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* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef SQLPP_PORTABLE_STATIC_ASSERT_H
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#define SQLPP_PORTABLE_STATIC_ASSERT_H
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#include <sqlpp11/consistent.h>
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#include <sqlpp11/inconsistent.h>
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namespace sqlpp
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{
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#define SQLPP_PORTABLE_STATIC_ASSERT(name, message) \
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struct name : std::false_type \
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{ \
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template <typename... T> \
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name(T&&...) \
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{ \
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static_assert(wrong_t<T...>::value, message); \
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} \
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auto begin() const -> void; \
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auto end() const -> void; \
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}
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namespace detail
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{
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template <bool Consistent, typename Assert>
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struct static_check_impl
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{
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using type = Assert;
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};
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template <typename Assert>
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struct static_check_impl<true, Assert>
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{
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using type = consistent_t;
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};
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}
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template <bool Consistent, typename Assert>
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using static_check_t = typename detail::static_check_impl<Consistent, Assert>::type;
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namespace detail
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{
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template <typename... StaticChecks>
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struct static_combined_check_impl;
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template <typename StaticCheck, typename... Rest>
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struct static_combined_check_impl<StaticCheck, Rest...>
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{
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using type = StaticCheck;
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};
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template <typename... Rest>
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struct static_combined_check_impl<consistent_t, Rest...>
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{
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using type = typename static_combined_check_impl<Rest...>::type;
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};
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template <>
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struct static_combined_check_impl<>
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{
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using type = consistent_t;
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};
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}
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template <typename... StaticChecks>
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using static_combined_check_t = typename detail::static_combined_check_impl<StaticChecks...>::type;
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}
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#endif
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