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
|
/*
*
* Copyright (c) 2003
* John Maddock
*
* Use, modification and distribution are subject to 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)
*
*/
/*
* LOCATION: see http://www.boost.org for most recent version.
* FILE u32regex_iterator.hpp
* VERSION see <cutl/details/boost/version.hpp>
* DESCRIPTION: Provides u32regex_iterator implementation.
*/
#ifndef BOOST_REGEX_V4_U32REGEX_ITERATOR_HPP
#define BOOST_REGEX_V4_U32REGEX_ITERATOR_HPP
namespace cutl_details_boost{
#ifdef BOOST_HAS_ABI_HEADERS
# include BOOST_ABI_PREFIX
#endif
template <class BidirectionalIterator>
class u32regex_iterator_implementation
{
typedef u32regex regex_type;
match_results<BidirectionalIterator> what; // current match
BidirectionalIterator base; // start of sequence
BidirectionalIterator end; // end of sequence
const regex_type re; // the expression
match_flag_type flags; // flags for matching
public:
u32regex_iterator_implementation(const regex_type* p, BidirectionalIterator last, match_flag_type f)
: base(), end(last), re(*p), flags(f){}
bool init(BidirectionalIterator first)
{
base = first;
return u32regex_search(first, end, what, re, flags, base);
}
bool compare(const u32regex_iterator_implementation& that)
{
if(this == &that) return true;
return (&re.get_data() == &that.re.get_data()) && (end == that.end) && (flags == that.flags) && (what[0].first == that.what[0].first) && (what[0].second == that.what[0].second);
}
const match_results<BidirectionalIterator>& get()
{ return what; }
bool next()
{
//if(what.prefix().first != what[0].second)
// flags |= match_prev_avail;
BidirectionalIterator next_start = what[0].second;
match_flag_type f(flags);
if(!what.length())
f |= regex_constants::match_not_initial_null;
//if(base != next_start)
// f |= regex_constants::match_not_bob;
bool result = u32regex_search(next_start, end, what, re, f, base);
if(result)
what.set_base(base);
return result;
}
private:
u32regex_iterator_implementation& operator=(const u32regex_iterator_implementation&);
};
template <class BidirectionalIterator>
class u32regex_iterator
#ifndef BOOST_NO_STD_ITERATOR
: public std::iterator<
std::forward_iterator_tag,
match_results<BidirectionalIterator>,
typename re_detail::regex_iterator_traits<BidirectionalIterator>::difference_type,
const match_results<BidirectionalIterator>*,
const match_results<BidirectionalIterator>& >
#endif
{
private:
typedef u32regex_iterator_implementation<BidirectionalIterator> impl;
typedef shared_ptr<impl> pimpl;
public:
typedef u32regex regex_type;
typedef match_results<BidirectionalIterator> value_type;
typedef typename re_detail::regex_iterator_traits<BidirectionalIterator>::difference_type
difference_type;
typedef const value_type* pointer;
typedef const value_type& reference;
typedef std::forward_iterator_tag iterator_category;
u32regex_iterator(){}
u32regex_iterator(BidirectionalIterator a, BidirectionalIterator b,
const regex_type& re,
match_flag_type m = match_default)
: pdata(new impl(&re, b, m))
{
if(!pdata->init(a))
{
pdata.reset();
}
}
u32regex_iterator(const u32regex_iterator& that)
: pdata(that.pdata) {}
u32regex_iterator& operator=(const u32regex_iterator& that)
{
pdata = that.pdata;
return *this;
}
bool operator==(const u32regex_iterator& that)const
{
if((pdata.get() == 0) || (that.pdata.get() == 0))
return pdata.get() == that.pdata.get();
return pdata->compare(*(that.pdata.get()));
}
bool operator!=(const u32regex_iterator& that)const
{ return !(*this == that); }
const value_type& operator*()const
{ return pdata->get(); }
const value_type* operator->()const
{ return &(pdata->get()); }
u32regex_iterator& operator++()
{
cow();
if(0 == pdata->next())
{
pdata.reset();
}
return *this;
}
u32regex_iterator operator++(int)
{
u32regex_iterator result(*this);
++(*this);
return result;
}
private:
pimpl pdata;
void cow()
{
// copy-on-write
if(pdata.get() && !pdata.unique())
{
pdata.reset(new impl(*(pdata.get())));
}
}
};
typedef u32regex_iterator<const char*> utf8regex_iterator;
typedef u32regex_iterator<const UChar*> utf16regex_iterator;
typedef u32regex_iterator<const UChar32*> utf32regex_iterator;
inline u32regex_iterator<const char*> make_u32regex_iterator(const char* p, const u32regex& e, regex_constants::match_flag_type m = regex_constants::match_default)
{
return u32regex_iterator<const char*>(p, p+std::strlen(p), e, m);
}
#ifndef BOOST_NO_WREGEX
inline u32regex_iterator<const wchar_t*> make_u32regex_iterator(const wchar_t* p, const u32regex& e, regex_constants::match_flag_type m = regex_constants::match_default)
{
return u32regex_iterator<const wchar_t*>(p, p+std::wcslen(p), e, m);
}
#endif
#if !defined(U_WCHAR_IS_UTF16) && (U_SIZEOF_WCHAR_T != 2)
inline u32regex_iterator<const UChar*> make_u32regex_iterator(const UChar* p, const u32regex& e, regex_constants::match_flag_type m = regex_constants::match_default)
{
return u32regex_iterator<const UChar*>(p, p+u_strlen(p), e, m);
}
#endif
template <class charT, class Traits, class Alloc>
inline u32regex_iterator<typename std::basic_string<charT, Traits, Alloc>::const_iterator> make_u32regex_iterator(const std::basic_string<charT, Traits, Alloc>& p, const u32regex& e, regex_constants::match_flag_type m = regex_constants::match_default)
{
typedef typename std::basic_string<charT, Traits, Alloc>::const_iterator iter_type;
return u32regex_iterator<iter_type>(p.begin(), p.end(), e, m);
}
inline u32regex_iterator<const UChar*> make_u32regex_iterator(const U_NAMESPACE_QUALIFIER UnicodeString& s, const u32regex& e, regex_constants::match_flag_type m = regex_constants::match_default)
{
return u32regex_iterator<const UChar*>(s.getBuffer(), s.getBuffer() + s.length(), e, m);
}
#ifdef BOOST_HAS_ABI_HEADERS
# include BOOST_ABI_SUFFIX
#endif
} // namespace cutl_details_boost
#endif // BOOST_REGEX_V4_REGEX_ITERATOR_HPP
|
