mirror of
https://github.com/bolero-MURAKAMI/Sprout.git
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62 lines
2.2 KiB
C++
62 lines
2.2 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_DETAIL_CHAR_LITERAL_HPP
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#define SPROUT_DETAIL_CHAR_LITERAL_HPP
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#include <sprout/config.hpp>
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#include <sprout/type_traits/integral_constant.hpp>
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#include <sprout/preprocessor/cat.hpp>
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namespace sprout {
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namespace detail {
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#if SPROUT_USE_UNICODE_LITERALS
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template<typename Elem, char C, wchar_t WC, char16_t C16, char32_t C32>
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struct char_literal_of;
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template<char C, wchar_t WC, char16_t C16, char32_t C32>
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struct char_literal_of<char, C, WC, C16, C32>
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: public sprout::integral_constant<char, C>
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{};
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template<char C, wchar_t WC, char16_t C16, char32_t C32>
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struct char_literal_of<wchar_t, C, WC, C16, C32>
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: public sprout::integral_constant<wchar_t, WC>
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{};
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template<char C, wchar_t WC, char16_t C16, char32_t C32>
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struct char_literal_of<char16_t, C, WC, C16, C32>
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: public sprout::integral_constant<char16_t, C16>
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{};
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template<char C, wchar_t WC, char16_t C16, char32_t C32>
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struct char_literal_of<char32_t, C, WC, C16, C32>
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: public sprout::integral_constant<char32_t, C32>
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{};
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#else
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template<typename Elem, char C, wchar_t WC>
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struct char_literal_of;
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template<char C, wchar_t WC>
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struct char_literal_of<char, C, WC>
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: public sprout::integral_constant<char, C>
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{};
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template<char C, wchar_t WC>
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struct char_literal_of<wchar_t, C, WC>
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: public sprout::integral_constant<wchar_t, WC>
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{};
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#endif
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} // namespace detail
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} // namespace sprout
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//
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// SPROUT_CHAR_LITERAL
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//
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#if SPROUT_USE_UNICODE_LITERALS
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# define SPROUT_CHAR_LITERAL(CHAR, TYPE) \
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(sprout::detail::char_literal_of<TYPE, CHAR, SPROUT_PP_CAT(L, CHAR), SPROUT_PP_CAT(u, CHAR), SPROUT_PP_CAT(U, CHAR)>::value)
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#else
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# define SPROUT_CHAR_LITERAL(CHAR, TYPE) \
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(sprout::detail::char_literal_of<TYPE, CHAR, SPROUT_PP_CAT(L, CHAR)>::value)
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#endif
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#endif // #ifndef SPROUT_DETAIL_CHAR_LITERAL_HPP
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