Chris@102: /*=============================================================================
Chris@102:     Copyright (c) 2001-2014 Joel de Guzman
Chris@102: 
Chris@102:     Distributed under the Boost Software License, Version 1.0. (See accompanying
Chris@102:     file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
Chris@102: ==============================================================================*/
Chris@102: #if !defined(BOOST_SPIRIT_X3_LITERAL_CHAR_APRIL_16_2006_1051AM)
Chris@102: #define BOOST_SPIRIT_X3_LITERAL_CHAR_APRIL_16_2006_1051AM
Chris@102: 
Chris@102: #if defined(_MSC_VER)
Chris@102: #pragma once
Chris@102: #endif
Chris@102: 
Chris@102: #include <boost/spirit/home/x3/char/char_parser.hpp>
Chris@102: #include <boost/spirit/home/x3/support/utility/utf8.hpp>
Chris@102: #include <boost/type_traits/is_same.hpp>
Chris@102: 
Chris@102: namespace boost { namespace spirit { namespace x3
Chris@102: {
Chris@102:     template <typename Encoding, typename Attribute = typename Encoding::char_type>
Chris@102:     struct literal_char : char_parser<literal_char<Encoding, Attribute>>
Chris@102:     {
Chris@102:         typedef typename Encoding::char_type char_type;
Chris@102:         typedef Encoding encoding;
Chris@102:         typedef Attribute attribute_type;
Chris@102:         static bool const has_attribute =
Chris@102:             !is_same<unused_type, attribute_type>::value;
Chris@102: 
Chris@102:         template <typename Char>
Chris@102:         literal_char(Char ch)
Chris@102:           : ch(static_cast<char_type>(ch)) {}
Chris@102: 
Chris@102:         template <typename Char, typename Context>
Chris@102:         bool test(Char ch_, Context const&) const
Chris@102:         {
Chris@102:             return ((sizeof(Char) <= sizeof(char_type)) || encoding::ischar(ch_))
Chris@102:                 && ch == char_type(ch_);
Chris@102:         }
Chris@102: 
Chris@102:         char_type ch;
Chris@102:     };
Chris@102: 
Chris@102:     template <typename Encoding, typename Attribute>
Chris@102:     struct get_info<literal_char<Encoding, Attribute>>
Chris@102:     {
Chris@102:         typedef std::string result_type;
Chris@102:         std::string operator()(literal_char<Encoding, Attribute> const& p) const
Chris@102:         {
Chris@102:             return '\'' + to_utf8(Encoding::toucs4(p.ch)) + '\'';
Chris@102:         }
Chris@102:     };
Chris@102: }}}
Chris@102: 
Chris@102: #endif