Boost C++ Libraries

boost/spirit/home/x3/char/char.hpp

/*=============================================================================
    Copyright (c) 2001-2014 Joel de Guzman

    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)
==============================================================================*/
#if !defined(BOOST_SPIRIT_X3_CHAR_APRIL_16_2006_1051AM)
#define BOOST_SPIRIT_X3_CHAR_APRIL_16_2006_1051AM

#include <boost/spirit/home/x3/char/any_char.hpp>
#include <boost/spirit/home/support/char_encoding/ascii.hpp>
#include <boost/spirit/home/support/char_encoding/iso8859_1.hpp>
#include <boost/spirit/home/support/char_encoding/standard.hpp>
#include <boost/spirit/home/support/char_encoding/standard_wide.hpp>

namespace boost { namespace spirit { namespace x3
{
    namespace standard
    {
        typedef any_char<char_encoding::standard> char_type;
        auto const char_ = char_type{};

        inline literal_char<char_encoding::standard, unused_type>
        lit(char ch)
        {
            return { ch };
        }

        inline literal_char<char_encoding::standard, unused_type>
        lit(wchar_t ch)
        {
            return { ch };
        }

    }

    using standard::char_type;
    using standard::char_;
    using standard::lit;

#ifndef BOOST_SPIRIT_NO_STANDARD_WIDE
    namespace standard_wide
    {
        typedef any_char<char_encoding::standard_wide> char_type;
        auto const char_ = char_type{};

        inline literal_char<char_encoding::standard_wide, unused_type>
        lit(wchar_t ch)
        {
            return { ch };
        }
    }
#endif

    namespace ascii
    {
        typedef any_char<char_encoding::ascii> char_type;
        auto const char_ = char_type{};

        inline literal_char<char_encoding::ascii, unused_type>
        lit(char ch)
        {
            return { ch };
        }

        inline literal_char<char_encoding::ascii, unused_type>
        lit(wchar_t ch)
        {
            return { ch };
        }
    }

    namespace iso8859_1
    {
        typedef any_char<char_encoding::iso8859_1> char_type;
        auto const char_ = char_type{};

        inline literal_char<char_encoding::iso8859_1, unused_type>
        lit(char ch)
        {
            return { ch };
        }

        inline literal_char<char_encoding::iso8859_1, unused_type>
        lit(wchar_t ch)
        {
            return { ch };
        }
    }

    namespace extension
    {
        template <>
        struct as_parser<char>
        {
            typedef literal_char<
                char_encoding::standard, unused_type>
            type;

            typedef type value_type;

            static type call(char ch)
            {
                return { ch };
            }
        };

#ifndef BOOST_SPIRIT_NO_STANDARD_WIDE
        template <>
        struct as_parser<wchar_t>
        {
            typedef literal_char<
                char_encoding::standard_wide, unused_type>
            type;

            typedef type value_type;

            static type call(wchar_t ch)
            {
                return { ch };
            }
        };
#endif

        template <>
        struct as_parser<char [2]>
        {
            typedef literal_char<
                char_encoding::standard, unused_type>
            type;

            typedef type value_type;

            static type call(char const ch[])
            {
                return { ch[0] };
            }
        };

#ifndef BOOST_SPIRIT_NO_STANDARD_WIDE
        template <>
        struct as_parser<wchar_t [2]>
        {
            typedef literal_char<
                char_encoding::standard_wide, unused_type>
            type;

            typedef type value_type;

            static type call(wchar_t const ch[] )
            {
                return { ch[0] };
            }
        };
#endif

    }

}}}

#endif