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1 | /*============================================================================= | |
2 | Copyright (c) 2001-2003 Joel de Guzman | |
3 | Copyright (c) 2001-2003 Daniel Nuffer | |
4 | http://spirit.sourceforge.net/ | |
5 | ||
6 | Use, modification and distribution is subject to the Boost Software | |
7 | License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at | |
8 | http://www.boost.org/LICENSE_1_0.txt) | |
9 | =============================================================================*/ | |
10 | #ifndef BOOST_XPRESSIVE_SPIRIT_BASIC_CHSET_HPP_EAN_10_04_2005 | |
11 | #define BOOST_XPRESSIVE_SPIRIT_BASIC_CHSET_HPP_EAN_10_04_2005 | |
12 | ||
13 | /////////////////////////////////////////////////////////////////////////////// | |
14 | #include <bitset> | |
15 | #include <boost/mpl/bool.hpp> | |
16 | #include <boost/xpressive/detail/utility/chset/range_run.ipp> | |
17 | ||
18 | namespace boost { namespace xpressive { namespace detail | |
19 | { | |
20 | ||
21 | /////////////////////////////////////////////////////////////////////////// | |
22 | // | |
23 | // basic_chset: basic character set implementation using range_run | |
24 | // | |
25 | /////////////////////////////////////////////////////////////////////////// | |
26 | template<typename Char> | |
27 | struct basic_chset | |
28 | { | |
29 | basic_chset(); | |
30 | basic_chset(basic_chset const &arg); | |
31 | ||
32 | bool empty() const; | |
33 | void set(Char from, Char to); | |
34 | template<typename Traits> | |
35 | void set(Char from, Char to, Traits const &tr); | |
36 | void set(Char c); | |
37 | template<typename Traits> | |
38 | void set(Char c, Traits const &tr); | |
39 | ||
40 | void clear(Char from, Char to); | |
41 | template<typename Traits> | |
42 | void clear(Char from, Char to, Traits const &tr); | |
43 | void clear(Char c); | |
44 | template<typename Traits> | |
45 | void clear(Char c, Traits const &tr); | |
46 | void clear(); | |
47 | ||
48 | template<typename Traits> | |
49 | bool test(Char v, Traits const &tr, mpl::false_) const; // case-sensitive | |
50 | template<typename Traits> | |
51 | bool test(Char v, Traits const &tr, mpl::true_) const; // case-insensitive | |
52 | ||
53 | void inverse(); | |
54 | void swap(basic_chset& x); | |
55 | ||
56 | basic_chset &operator |=(basic_chset const &x); | |
57 | basic_chset &operator &=(basic_chset const &x); | |
58 | basic_chset &operator -=(basic_chset const &x); | |
59 | basic_chset &operator ^=(basic_chset const &x); | |
60 | ||
61 | private: | |
62 | range_run<Char> rr_; | |
63 | }; | |
64 | ||
65 | #if(CHAR_BIT == 8) | |
66 | ||
67 | /////////////////////////////////////////////////////////////////////////// | |
68 | // | |
69 | // basic_chset: specializations for 8 bit chars using std::bitset | |
70 | // | |
71 | /////////////////////////////////////////////////////////////////////////// | |
72 | template<typename Char> | |
73 | struct basic_chset_8bit | |
74 | { | |
75 | basic_chset_8bit(); | |
76 | basic_chset_8bit(basic_chset_8bit const &arg); | |
77 | ||
78 | bool empty() const; | |
79 | ||
80 | void set(Char from, Char to); | |
81 | template<typename Traits> | |
82 | void set(Char from, Char to, Traits const &tr); | |
83 | void set(Char c); | |
84 | template<typename Traits> | |
85 | void set(Char c, Traits const &tr); | |
86 | ||
87 | void clear(Char from, Char to); | |
88 | template<typename Traits> | |
89 | void clear(Char from, Char to, Traits const &tr); | |
90 | void clear(Char c); | |
91 | template<typename Traits> | |
92 | void clear(Char c, Traits const &tr); | |
93 | void clear(); | |
94 | ||
95 | template<typename Traits> | |
96 | bool test(Char v, Traits const &tr, mpl::false_) const; // case-sensitive | |
97 | template<typename Traits> | |
98 | bool test(Char v, Traits const &tr, mpl::true_) const; // case-insensitive | |
99 | ||
100 | void inverse(); | |
101 | void swap(basic_chset_8bit& x); | |
102 | ||
103 | basic_chset_8bit &operator |=(basic_chset_8bit const &x); | |
104 | basic_chset_8bit &operator &=(basic_chset_8bit const &x); | |
105 | basic_chset_8bit &operator -=(basic_chset_8bit const &x); | |
106 | basic_chset_8bit &operator ^=(basic_chset_8bit const &x); | |
107 | ||
108 | std::bitset<256> const &base() const; | |
109 | ||
110 | private: | |
111 | std::bitset<256> bset_; // BUGBUG range-checking slows this down | |
112 | }; | |
113 | ||
114 | ///////////////////////////////// | |
115 | template<> | |
116 | struct basic_chset<char> | |
117 | : basic_chset_8bit<char> | |
118 | { | |
119 | }; | |
120 | ||
121 | ///////////////////////////////// | |
122 | template<> | |
123 | struct basic_chset<signed char> | |
124 | : basic_chset_8bit<signed char> | |
125 | { | |
126 | }; | |
127 | ||
128 | ///////////////////////////////// | |
129 | template<> | |
130 | struct basic_chset<unsigned char> | |
131 | : basic_chset_8bit<unsigned char> | |
132 | { | |
133 | }; | |
134 | ||
135 | #endif | |
136 | ||
137 | /////////////////////////////////////////////////////////////////////////////// | |
138 | // is_narrow_char | |
139 | template<typename Char> | |
140 | struct is_narrow_char | |
141 | : mpl::false_ | |
142 | {}; | |
143 | ||
144 | template<> | |
145 | struct is_narrow_char<char> | |
146 | : mpl::true_ | |
147 | {}; | |
148 | ||
149 | template<> | |
150 | struct is_narrow_char<signed char> | |
151 | : mpl::true_ | |
152 | {}; | |
153 | ||
154 | template<> | |
155 | struct is_narrow_char<unsigned char> | |
156 | : mpl::true_ | |
157 | {}; | |
158 | ||
159 | /////////////////////////////////////////////////////////////////////////////// | |
160 | // helpers | |
161 | template<typename Char, typename Traits> | |
162 | void set_char(basic_chset<Char> &chset, Char ch, Traits const &tr, bool icase); | |
163 | ||
164 | template<typename Char, typename Traits> | |
165 | void set_range(basic_chset<Char> &chset, Char from, Char to, Traits const &tr, bool icase); | |
166 | ||
167 | template<typename Char, typename Traits> | |
168 | void set_class(basic_chset<Char> &chset, typename Traits::char_class_type char_class, bool no, Traits const &tr); | |
169 | ||
170 | }}} // namespace boost::xpressive::detail | |
171 | ||
172 | #endif |