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
|
// Versatile string utility -*- C++ -*-
// Copyright (C) 2005, 2006, 2007, 2008, 2009, 2010
// Free Software Foundation, Inc.
//
// This file is part of the GNU ISO C++ Library. This library is free
// software; you can redistribute it and/or modify it under the
// terms of the GNU General Public License as published by the
// Free Software Foundation; either version 3, or (at your option)
// any later version.
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
// Under Section 7 of GPL version 3, you are granted additional
// permissions described in the GCC Runtime Library Exception, version
// 3.1, as published by the Free Software Foundation.
// You should have received a copy of the GNU General Public License and
// a copy of the GCC Runtime Library Exception along with this program;
// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
// <http://www.gnu.org/licenses/>.
/** @file ext/vstring_util.h
* This is an internal header file, included by other library headers.
* Do not attempt to use it directly. @headername{ext/vstring.h}
*/
#ifndef _VSTRING_UTIL_H
#define _VSTRING_UTIL_H 1
#pragma GCC system_header
#include <ext/vstring_fwd.h>
#include <debug/debug.h>
#include <bits/stl_function.h> // For less
#include <bits/functexcept.h>
#include <bits/localefwd.h>
#include <bits/ostream_insert.h>
#include <bits/stl_iterator.h>
#include <ext/numeric_traits.h>
#include <bits/move.h>
#include <bits/range_access.h>
namespace __gnu_cxx _GLIBCXX_VISIBILITY(default)
{
_GLIBCXX_BEGIN_NAMESPACE_VERSION
template<typename _CharT, typename _Traits, typename _Alloc>
struct __vstring_utility
{
typedef typename _Alloc::template rebind<_CharT>::other _CharT_alloc_type;
typedef _Traits traits_type;
typedef typename _Traits::char_type value_type;
typedef typename _CharT_alloc_type::size_type size_type;
typedef typename _CharT_alloc_type::difference_type difference_type;
typedef typename _CharT_alloc_type::pointer pointer;
typedef typename _CharT_alloc_type::const_pointer const_pointer;
// For __sso_string.
typedef __gnu_cxx::
__normal_iterator<pointer, __gnu_cxx::
__versa_string<_CharT, _Traits, _Alloc,
__sso_string_base> >
__sso_iterator;
typedef __gnu_cxx::
__normal_iterator<const_pointer, __gnu_cxx::
__versa_string<_CharT, _Traits, _Alloc,
__sso_string_base> >
__const_sso_iterator;
// For __rc_string.
typedef __gnu_cxx::
__normal_iterator<pointer, __gnu_cxx::
__versa_string<_CharT, _Traits, _Alloc,
__rc_string_base> >
__rc_iterator;
typedef __gnu_cxx::
__normal_iterator<const_pointer, __gnu_cxx::
__versa_string<_CharT, _Traits, _Alloc,
__rc_string_base> >
__const_rc_iterator;
// NB: When the allocator is empty, deriving from it saves space
// (http://www.cantrip.org/emptyopt.html).
template<typename _Alloc1>
struct _Alloc_hider
: public _Alloc1
{
_Alloc_hider(_CharT* __ptr)
: _Alloc1(), _M_p(__ptr) { }
_Alloc_hider(const _Alloc1& __a, _CharT* __ptr)
: _Alloc1(__a), _M_p(__ptr) { }
_CharT* _M_p; // The actual data.
};
// When __n = 1 way faster than the general multichar
// traits_type::copy/move/assign.
static void
_S_copy(_CharT* __d, const _CharT* __s, size_type __n)
{
if (__n == 1)
traits_type::assign(*__d, *__s);
else
traits_type::copy(__d, __s, __n);
}
static void
_S_move(_CharT* __d, const _CharT* __s, size_type __n)
{
if (__n == 1)
traits_type::assign(*__d, *__s);
else
traits_type::move(__d, __s, __n);
}
static void
_S_assign(_CharT* __d, size_type __n, _CharT __c)
{
if (__n == 1)
traits_type::assign(*__d, __c);
else
traits_type::assign(__d, __n, __c);
}
// _S_copy_chars is a separate template to permit specialization
// to optimize for the common case of pointers as iterators.
template<typename _Iterator>
static void
_S_copy_chars(_CharT* __p, _Iterator __k1, _Iterator __k2)
{
for (; __k1 != __k2; ++__k1, ++__p)
traits_type::assign(*__p, *__k1); // These types are off.
}
static void
_S_copy_chars(_CharT* __p, __sso_iterator __k1, __sso_iterator __k2)
{ _S_copy_chars(__p, __k1.base(), __k2.base()); }
static void
_S_copy_chars(_CharT* __p, __const_sso_iterator __k1,
__const_sso_iterator __k2)
{ _S_copy_chars(__p, __k1.base(), __k2.base()); }
static void
_S_copy_chars(_CharT* __p, __rc_iterator __k1, __rc_iterator __k2)
{ _S_copy_chars(__p, __k1.base(), __k2.base()); }
static void
_S_copy_chars(_CharT* __p, __const_rc_iterator __k1,
__const_rc_iterator __k2)
{ _S_copy_chars(__p, __k1.base(), __k2.base()); }
static void
_S_copy_chars(_CharT* __p, _CharT* __k1, _CharT* __k2)
{ _S_copy(__p, __k1, __k2 - __k1); }
static void
_S_copy_chars(_CharT* __p, const _CharT* __k1, const _CharT* __k2)
{ _S_copy(__p, __k1, __k2 - __k1); }
static int
_S_compare(size_type __n1, size_type __n2)
{
const difference_type __d = difference_type(__n1 - __n2);
if (__d > __numeric_traits_integer<int>::__max)
return __numeric_traits_integer<int>::__max;
else if (__d < __numeric_traits_integer<int>::__min)
return __numeric_traits_integer<int>::__min;
else
return int(__d);
}
};
_GLIBCXX_END_NAMESPACE_VERSION
} // namespace
#endif /* _VSTRING_UTIL_H */
|
