blob: 94b2a239a6cc419cde7bf9b08f8aa462c73eb05a (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
|
/*=============================================================================
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
#if defined(_MSC_VER)
#pragma once
#endif
#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>
literal_char(Char ch)
: ch(static_cast<char_type>(ch)) {}
template <typename Char, typename Context>
bool test(Char ch_, Context const&) const
{
return ((sizeof(Char) <= sizeof(char_type)) || encoding::ischar(ch_))
&& ch == char_type(ch_);
}
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
|
