/*=============================================================================
|
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
|
