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fix char literal implementation

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bolero-MURAKAMI 2014-10-27 10:16:49 +09:00
parent 773855410b
commit 897d1e25b6
18 changed files with 325 additions and 95 deletions
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sprout/detail/char_literal.hpp Normal file
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/*=============================================================================
Copyright (c) 2011-2014 Bolero MURAKAMI
https://github.com/bolero-MURAKAMI/Sprout
Distributed under the Boost Software License, Version 1.0. (See accompanying
file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
=============================================================================*/
#ifndef SPROUT_DETAIL_CHAR_LITERAL_HPP
#define SPROUT_DETAIL_CHAR_LITERAL_HPP
#include <sprout/config.hpp>
#include <sprout/type_traits/integral_constant.hpp>
#include <sprout/preprocessor/cat.hpp>
namespace sprout {
namespace detail {
#if SPROUT_USE_UNICODE_LITERALS
template<typename Elem, char C, wchar_t WC, char16_t C16, char32_t C32>
struct char_literal_of;
template<char C, wchar_t WC, char16_t C16, char32_t C32>
struct char_literal_of<char, C, WC, C16, C32>
: public sprout::integral_constant<char, C>
{};
template<char C, wchar_t WC, char16_t C16, char32_t C32>
struct char_literal_of<wchar_t, C, WC, C16, C32>
: public sprout::integral_constant<wchar_t, WC>
{};
template<char C, wchar_t WC, char16_t C16, char32_t C32>
struct char_literal_of<char16_t, C, WC, C16, C32>
: public sprout::integral_constant<char16_t, C16>
{};
template<char C, wchar_t WC, char16_t C16, char32_t C32>
struct char_literal_of<char32_t, C, WC, C16, C32>
: public sprout::integral_constant<char32_t, C32>
{};
#else
template<typename Elem, char C, wchar_t WC>
struct char_literal_of;
template<char C, wchar_t WC>
struct char_literal_of<char, C, WC>
: public sprout::integral_constant<char, C>
{};
template<char C, wchar_t WC>
struct char_literal_of<wchar_t, C, WC>
: public sprout::integral_constant<wchar_t, WC>
{};
#endif
} // namespace detail
} // namespace sprout
//
// SPROUT_CHAR_LITERAL
//
#if SPROUT_USE_UNICODE_LITERALS
# define SPROUT_CHAR_LITERAL(CHAR, TYPE) \
(sprout::detail::char_literal_of<TYPE, CHAR, SPROUT_PP_CAT(L, CHAR), SPROUT_PP_CAT(u, CHAR), SPROUT_PP_CAT(U, CHAR)>::value)
#else
# define SPROUT_CHAR_LITERAL(CHAR, TYPE) \
(sprout::detail::char_literal_of<TYPE, CHAR, SPROUT_PP_CAT(L, CHAR)>::value)
#endif
#endif // #ifndef SPROUT_DETAIL_CHAR_LITERAL_HPP