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38 lines
1.2 KiB
C++
38 lines
1.2 KiB
C++
/*=============================================================================
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Copyright (c) 2011-2014 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_UTILITY_DYN_CAST_HPP
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#define SPROUT_UTILITY_DYN_CAST_HPP
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#include <sprout/config.hpp>
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#include <sprout/type_traits/is_upcast.hpp>
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#include <sprout/type_traits/enabler_if.hpp>
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#include <sprout/utility/forward.hpp>
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namespace sprout {
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//
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// dyn_cast
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//
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template<
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typename T, typename U,
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typename sprout::enabler_if<sprout::is_upcast<U&&, T>::value>::type = sprout::enabler
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>
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inline SPROUT_CONSTEXPR T
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dyn_cast(U&& x) {
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return static_cast<T>(SPROUT_FORWARD(U, x));
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}
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template<
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typename T, typename U,
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typename sprout::enabler_if<!sprout::is_upcast<U&&, T>::value>::type = sprout::enabler
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>
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inline SPROUT_NON_CONSTEXPR T
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dyn_cast(U&& x) {
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return dynamic_cast<T>(SPROUT_FORWARD(U, x));
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}
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} // namespace sprout
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#endif // #ifndef SPROUT_UTILITY_DYN_CAST_HPP
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