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
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
|
///////////////////////////////////////////////////////////////////////////////
// transmogrify.hpp
//
// Copyright 2008 Eric Niebler. 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)
#ifndef BOOST_XPRESSIVE_DETAIL_STATIC_TRANSMOGRIFY_HPP_EAN_10_04_2005
#define BOOST_XPRESSIVE_DETAIL_STATIC_TRANSMOGRIFY_HPP_EAN_10_04_2005
// MS compatible compilers support #pragma once
#if defined(_MSC_VER)
# pragma once
#endif
#include <cstring> // for std::strlen
#include <boost/mpl/if.hpp>
#include <boost/mpl/or.hpp>
#include <boost/mpl/bool.hpp>
#include <boost/mpl/assert.hpp>
#include <boost/type_traits/is_same.hpp>
#include <boost/xpressive/detail/detail_fwd.hpp>
#include <boost/xpressive/detail/core/matchers.hpp>
#include <boost/xpressive/detail/static/placeholders.hpp>
#include <boost/xpressive/detail/utility/dont_care.hpp>
#include <boost/xpressive/detail/utility/traits_utils.hpp>
namespace boost { namespace xpressive { namespace detail
{
template<typename T, typename Char>
struct is_char_literal
: mpl::or_<is_same<T, Char>, is_same<T, char> >
{};
///////////////////////////////////////////////////////////////////////////////
// transmogrify
//
template<typename BidiIter, typename ICase, typename Traits, typename Matcher, typename EnableIf = void>
struct default_transmogrify
{
typedef typename Traits::char_type char_type;
typedef typename Traits::string_type string_type;
typedef typename mpl::if_c
<
is_char_literal<Matcher, char_type>::value
, literal_matcher<Traits, ICase, mpl::false_>
, string_matcher<Traits, ICase>
>::type type;
template<typename Matcher2, typename Visitor>
static type call(Matcher2 const &m, Visitor &visitor)
{
return default_transmogrify::call_(m, visitor, is_char_literal<Matcher2, char_type>());
}
template<typename Matcher2, typename Visitor>
static type call_(Matcher2 const &m, Visitor &visitor, mpl::true_)
{
char_type ch = char_cast<char_type>(m, visitor.traits());
return type(ch, visitor.traits());
}
template<typename Matcher2, typename Visitor>
static type call_(Matcher2 const &m, Visitor &visitor, mpl::false_)
{
string_type str = string_cast<string_type>(m, visitor.traits());
return type(str, visitor.traits());
}
};
template<typename BidiIter, typename ICase, typename Traits, typename Matcher>
struct default_transmogrify<BidiIter, ICase, Traits, Matcher, typename Matcher::is_boost_xpressive_xpression_>
{
typedef Matcher type;
template<typename Matcher2>
static Matcher2 const &call(Matcher2 const &m, dont_care)
{
return m;
}
};
template<typename BidiIter, typename ICase, typename Traits, typename Matcher>
struct transmogrify
: default_transmogrify<BidiIter, ICase, Traits, Matcher>
{};
template<typename BidiIter, typename ICase, typename Traits>
struct transmogrify<BidiIter, ICase, Traits, assert_bol_placeholder >
{
typedef assert_bol_matcher<Traits> type;
template<typename Matcher2, typename Visitor>
static type call(Matcher2, Visitor &visitor)
{
return type(visitor.traits());
}
};
template<typename BidiIter, typename ICase, typename Traits>
struct transmogrify<BidiIter, ICase, Traits, assert_eol_placeholder >
{
typedef assert_eol_matcher<Traits> type;
template<typename Matcher2, typename Visitor>
static type call(Matcher2, Visitor &visitor)
{
return type(visitor.traits());
}
};
template<typename BidiIter, typename ICase, typename Traits>
struct transmogrify<BidiIter, ICase, Traits, logical_newline_placeholder >
{
typedef logical_newline_matcher<Traits> type;
template<typename Matcher2, typename Visitor>
static type call(Matcher2, Visitor &visitor)
{
return type(visitor.traits());
}
};
template<typename BidiIter, typename ICase, typename Traits, typename Char>
struct transmogrify<BidiIter, ICase, Traits, range_placeholder<Char> >
{
// By design, we don't widen character ranges.
typedef typename iterator_value<BidiIter>::type char_type;
BOOST_MPL_ASSERT((is_same<Char, char_type>));
typedef range_matcher<Traits, ICase> type;
template<typename Matcher2, typename Visitor>
static type call(Matcher2 const &m, Visitor &visitor)
{
return type(m.ch_min_, m.ch_max_, m.not_, visitor.traits());
}
};
template<typename BidiIter, typename ICase, typename Traits>
struct transmogrify<BidiIter, ICase, Traits, mark_placeholder >
{
typedef mark_matcher<Traits, ICase> type;
template<typename Matcher2, typename Visitor>
static type call(Matcher2 const &m, Visitor &visitor)
{
return type(m.mark_number_, visitor.traits());
}
};
template<typename BidiIter, typename ICase, typename Traits>
struct transmogrify<BidiIter, ICase, Traits, posix_charset_placeholder >
{
typedef posix_charset_matcher<Traits> type;
template<typename Matcher2, typename Visitor>
static type call(Matcher2 const &m, Visitor &visitor)
{
char const *name_end = m.name_ + std::strlen(m.name_);
return type(visitor.traits().lookup_classname(m.name_, name_end, ICase::value), m.not_);
}
};
template<typename BidiIter, typename Traits, typename Size>
struct transmogrify<BidiIter, mpl::true_, Traits, set_matcher<Traits, Size> >
{
typedef set_matcher<Traits, Size> type;
template<typename Matcher2, typename Visitor>
static type call(Matcher2 m, Visitor &visitor)
{
m.nocase(visitor.traits());
return m;
}
};
template<typename BidiIter, typename ICase, typename Traits, typename Cond>
struct transmogrify<BidiIter, ICase, Traits, assert_word_placeholder<Cond> >
{
typedef assert_word_matcher<Cond, Traits> type;
template<typename Visitor>
static type call(dont_care, Visitor &visitor)
{
return type(visitor.traits());
}
};
template<typename BidiIter, typename ICase, typename Traits>
struct transmogrify<BidiIter, ICase, Traits, reference_wrapper<basic_regex<BidiIter> > >
{
typedef regex_byref_matcher<BidiIter> type;
template<typename Matcher2>
static type call(Matcher2 const &m, dont_care)
{
return type(detail::core_access<BidiIter>::get_regex_impl(m.get()));
}
};
template<typename BidiIter, typename ICase, typename Traits>
struct transmogrify<BidiIter, ICase, Traits, reference_wrapper<basic_regex<BidiIter> const> >
{
typedef regex_byref_matcher<BidiIter> type;
template<typename Matcher2>
static type call(Matcher2 const &m, dont_care)
{
return type(detail::core_access<BidiIter>::get_regex_impl(m.get()));
}
};
template<typename BidiIter, typename ICase, typename Traits>
struct transmogrify<BidiIter, ICase, Traits, tracking_ptr<regex_impl<BidiIter> > >
{
typedef regex_matcher<BidiIter> type;
template<typename Matcher2>
static type call(Matcher2 const &m, dont_care)
{
return type(m.get());
}
};
template<typename BidiIter, typename ICase, typename Traits>
struct transmogrify<BidiIter, ICase, Traits, self_placeholder >
{
typedef regex_byref_matcher<BidiIter> type;
template<typename Matcher2, typename Visitor>
static type call(Matcher2, Visitor &visitor)
{
return type(visitor.self());
}
};
}}}
#endif
|
