1// char_traits.hpp
2// Copyright (c) 2007-2009 Ben Hanson (http://www.benhanson.net/)
3//
4// Distributed under the Boost Software License, Version 1.0. (See accompanying
5// file licence_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
6#ifndef BOOST_SPIRIT_SUPPORT_DETAIL_LEXER_CHAR_TRAITS_HPP
7#define BOOST_SPIRIT_SUPPORT_DETAIL_LEXER_CHAR_TRAITS_HPP
8
9// Make sure wchar_t is defined
10#include <string>
11
12namespace boost
13{
14namespace lexer
15{
16template<typename CharT>
17struct char_traits
18{
19 typedef CharT char_type;
20 typedef CharT index_type;
21
22 static index_type call (CharT ch)
23 {
24 return ch;
25 }
26};
27
28template<>
29struct char_traits<char>
30{
31 typedef char char_type;
32 typedef unsigned char index_type;
33
34 static index_type call (char ch)
35 {
36 return static_cast<index_type>(ch);
37 }
38};
39
40template<>
41struct char_traits<wchar_t>
42{
43 typedef wchar_t char_type;
44 typedef wchar_t index_type;
45
46 static index_type call (wchar_t ch)
47 {
48 return ch;
49 }
50};
51}
52}
53
54#endif
55

source code of boost/libs/spirit/include/boost/spirit/home/support/detail/lexer/char_traits.hpp