/Src/Dependencies/Boost/boost/xpressive/detail/utility/literals.hpp
http://hadesmem.googlecode.com/ · C++ Header · 85 lines · 56 code · 19 blank · 10 comment · 1 complexity · 477cb2ad968fac005e3fab48e37bb133 MD5 · raw file
- ///////////////////////////////////////////////////////////////////////////////
- // literals.hpp
- //
- // Copyright 2008 Eric Niebler. 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 BOOST_XPRESSIVE_DETAIL_UTILITY_LITERALS_HPP_EAN_10_04_2005
- #define BOOST_XPRESSIVE_DETAIL_UTILITY_LITERALS_HPP_EAN_10_04_2005
- // MS compatible compilers support #pragma once
- #if defined(_MSC_VER) && (_MSC_VER >= 1020)
- # pragma once
- #endif
- #include <boost/config.hpp> // for BOOST_STATIC_CONSTANT
- #include <boost/cstdint.hpp> // for BOOST_STATIC_CONSTANT
- #include <boost/detail/workaround.hpp>
- namespace boost { namespace xpressive { namespace detail
- {
- ///////////////////////////////////////////////////////////////////////////////
- // char_literal
- //
- template<typename Char, boost::intmax_t Ch, boost::intmax_t Wch>
- struct char_literal;
- template<typename Char, boost::intmax_t Ch>
- struct char_literal<Char, Ch, Ch>
- {
- BOOST_STATIC_CONSTANT(boost::intmax_t, value = Ch);
- };
- #ifndef BOOST_NO_INCLASS_MEMBER_INITIALIZATION
- template<typename Char, boost::intmax_t Ch>
- boost::intmax_t const char_literal<Char, Ch, Ch>::value;
- #endif
- template<typename Ch>
- struct string_literal;
- template<>
- struct string_literal<char>
- {
- static char const *pick(char const *cstr, wchar_t const *)
- {
- return cstr;
- }
- static char pick(char ch, wchar_t)
- {
- return ch;
- }
- };
- template<>
- struct string_literal<wchar_t>
- {
- static wchar_t const *pick(char const *, wchar_t const *cstr)
- {
- return cstr;
- }
- static wchar_t pick(char, wchar_t ch)
- {
- return ch;
- }
- };
- #if BOOST_WORKAROUND(__MWERKS__, BOOST_TESTED_AT(0x3206))
- # define BOOST_XPR_CHAR_(Char, ch) ch
- # define BOOST_XPR_CSTR_(Char, st) boost::xpressive::detail::string_literal<Char>::pick(st, L##st)
- #else
- # define BOOST_XPR_CHAR_(Char, ch) boost::xpressive::detail::char_literal<Char, ch, L##ch>::value
- # define BOOST_XPR_CSTR_(Char, st) boost::xpressive::detail::string_literal<Char>::pick(st, L##st)
- #endif
- }}} // namespace boost::xpressive::detail
- #endif