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- // boost cxx11_char_types.hpp --------------------------------------------------------//
- // Copyright Beman Dawes 2011
- // Distributed under the Boost Software License, Version 1.0.
- // See http://www.boost.org/LICENSE_1_0.txt
- //--------------------------------------------------------------------------------------//
- // //
- // The purpose of this header is to emulate the C++11 char16_t and char32_t //
- // character and string types so that they can be used in both C++11 and C++03 //
- // programs. //
- // //
- // The emulation names use char16/char32 rather than char16_t/char32_t to avoid use //
- // of names that are keywords in C++11. //
- // //
- // The emulation names are placed in namespace boost, as is usual for Boost C++11 //
- // emulation names such as those in header <boost/cstdint.hpp>. //
- // //
- // An alternative would would have been to place the C++11 emulation names at global //
- // scope, and put the C++11 string types in namespace std. That is the approach taken //
- // by Microsoft Visual Studio 2010, but is controversion with some Boost users and //
- // developers, and runs counter to usual Boost practice. //
- // //
- // Thanks to Mathias Gaunard and others for discussions leading to the final form //
- // of these typedefs. //
- // //
- // Boost C++11 C++03 //
- // ---------------- -------------- -------------------------------- //
- // boost::char16 char16_t uint16_t //
- // boost::char32 char32_t uint32_t //
- // boost::u16string std::u16string std::basic_string<boost::char16> //
- // boost::u32string std::u32string std::basic_string<boost::char32> //
- // //
- // Uses the typedefs provided by Microsoft Visual C++ 2010 if present //
- // //
- // Thanks to Mathias Gaunard and others for discussions leading to the final form //
- // of these typedefs. //
- // //
- //--------------------------------------------------------------------------------------//
- #if !defined(BOOST_CXX11_CHAR_TYPES_HPP)
- # define BOOST_CXX11_CHAR_TYPES_HPP
- # include <boost/config.hpp>
- # include <boost/cstdint.hpp>
- # include <string>
- namespace boost
- {
- # if defined(BOOST_NO_CXX11_CHAR16_T) && (!defined(_MSC_VER) || _MSC_VER < 1600) // 1600 == VC++10
- typedef boost::uint_least16_t char16;
- typedef std::basic_string<boost::char16> u16string;
- # else
- typedef char16_t char16;
- typedef std::u16string u16string;
- # endif
- # if defined(BOOST_NO_CXX11_CHAR32_T) && (!defined(_MSC_VER) || _MSC_VER < 1600) // 1600 == VC++10
- typedef boost::uint_least32_t char32;
- typedef std::basic_string<boost::char32> u32string;
- # else
- typedef char32_t char32;
- typedef std::u32string u32string;
- # endif
- } // namespace boost
- #endif // !defined(BOOST_CXX11_CHAR_TYPES_HPP)
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