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https://github.com/bolero-MURAKAMI/Sprout.git
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49 lines
1.4 KiB
C++
49 lines
1.4 KiB
C++
/*=============================================================================
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Copyright (c) 2011-2019 Bolero MURAKAMI
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https://github.com/bolero-MURAKAMI/Sprout
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Distributed under the Boost Software License, Version 1.0. (See accompanying
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file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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=============================================================================*/
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#ifndef SPROUT_STATIC_WARNING_HPP
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#define SPROUT_STATIC_WARNING_HPP
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#include <sprout/config.hpp>
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namespace sprout {
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//
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// static_warning
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//
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template<bool C>
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struct static_warning;
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template<>
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struct static_warning<true> {
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template<typename Message>
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static void warn() {}
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};
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template<>
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struct static_warning<false> {
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template<typename Message>
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static void warn() {
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Message static_warning_failed;
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}
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};
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} // namespace sprout
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//
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// SPROUT_STATIC_WARNING
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//
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#define SPROUT_STATIC_WARNING_IMPL_2(COND, MSG, LINE) \
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struct sprout_static_warning_line_ ## LINE { \
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struct MSG {}; \
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sprout_static_warning_line_ ## LINE() { \
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::sprout::static_warning<(COND)>:: \
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warn<void***** (MSG::*****)()>(); \
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} \
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}
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#define SPROUT_STATIC_WARNING_IMPL(COND, MSG) \
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SPROUT_STATIC_WARNING_IMPL_2(COND, MSG, __LINE__)
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#define SPROUT_STATIC_WARNING(COND) \
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SPROUT_STATIC_WARNING_IMPL(COND, static_warning_failed)
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#endif // #ifndef SPROUT_STATIC_WARNING_HPP
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