49 lines
1.4 KiB
C++
49 lines
1.4 KiB
C++
//
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// Copyright (c) 2022-2023 Alexander Grund
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//
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// Distributed under the Boost Software License, Version 1.0.
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// https://www.boost.org/LICENSE_1_0.txt
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#ifndef BOOST_LOCALE_DETAIL_IS_SUPPORTED_CHAR_HPP_INCLUDED
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#define BOOST_LOCALE_DETAIL_IS_SUPPORTED_CHAR_HPP_INCLUDED
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#include <boost/locale/config.hpp>
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#include <type_traits>
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/// \cond INTERNAL
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namespace boost { namespace locale { namespace detail {
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/// Trait, returns true iff the argument is a supported character type
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template<typename Char>
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struct is_supported_char : std::false_type {};
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template<>
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struct is_supported_char<char> : std::true_type {};
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template<>
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struct is_supported_char<wchar_t> : std::true_type {};
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#ifdef __cpp_char8_t
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template<>
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struct is_supported_char<char8_t> : std::true_type {};
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#endif
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#ifdef BOOST_LOCALE_ENABLE_CHAR16_T
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template<>
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struct is_supported_char<char16_t> : std::true_type {};
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#endif
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#ifdef BOOST_LOCALE_ENABLE_CHAR32_T
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template<>
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struct is_supported_char<char32_t> : std::true_type {};
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#endif
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template<typename Char>
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using enable_if_is_supported_char = typename std::enable_if<is_supported_char<Char>::value>::type;
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}}} // namespace boost::locale::detail
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#define BOOST_LOCALE_ASSERT_IS_SUPPORTED(Char) \
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static_assert(boost::locale::detail::is_supported_char<Char>::value, "Unsupported Char type")
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/// \endcond
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#endif
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