/*=============================================================================
    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_LITERAL_CHAR_APRIL_16_2006_1051AM)
#define BOOST_SPIRIT_X3_LITERAL_CHAR_APRIL_16_2006_1051AM

#include <boost/spirit/home/x3/char/char_parser.hpp>
#include <boost/spirit/home/x3/support/utility/utf8.hpp>
#include <boost/type_traits/is_same.hpp>

namespace boost {
namespace spirit {
namespace x3 {
template <typename Encoding, typename Attribute = typename Encoding::char_type>
struct literal_char : char_parser<literal_char<Encoding, Attribute>>
{
    typedef typename Encoding::char_type char_type;
    typedef Encoding encoding;
    typedef Attribute attribute_type;
    static bool const has_attribute =
        !is_same<unused_type, attribute_type>::value;

    template <typename Char>
    constexpr
    literal_char(Char ch)
        : ch(static_cast<char_type>(ch)) {}

    template <typename Char, typename Context>
    bool
    test(Char ch_, Context const& context) const
    {
        return get_case_compare<encoding>(context)(ch, char_type(ch_)) == 0;
    }

    char_type ch;
};

template <typename Encoding, typename Attribute>
struct get_info<literal_char<Encoding, Attribute>>
{
    typedef std::string result_type;
    std::string
    operator()(literal_char<Encoding, Attribute> const& p) const
    {
        return '\'' + to_utf8(Encoding::toucs4(p.ch)) + '\'';
    }
};
}
}
}

#endif
