1 // Versatile string utility -*- C++ -*-
3 // Copyright (C) 2005, 2006, 2007 Free Software Foundation, Inc.
5 // This file is part of the GNU ISO C++ Library. This library is free
6 // software; you can redistribute it and/or modify it under the
7 // terms of the GNU General Public License as published by the
8 // Free Software Foundation; either version 2, or (at your option)
11 // This library is distributed in the hope that it will be useful,
12 // but WITHOUT ANY WARRANTY; without even the implied warranty of
13 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 // GNU General Public License for more details.
16 // You should have received a copy of the GNU General Public License along
17 // with this library; see the file COPYING. If not, write to the Free
18 // Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
21 // As a special exception, you may use this file as part of a free software
22 // library without restriction. Specifically, if other files instantiate
23 // templates or use macros or inline functions from this file, or you compile
24 // this file and link it with other files to produce an executable, this
25 // file does not by itself cause the resulting executable to be covered by
26 // the GNU General Public License. This exception does not however
27 // invalidate any other reasons why the executable file might be covered by
28 // the GNU General Public License.
30 /** @file ext/vstring_util.h
31 * This file is a GNU extension to the Standard C++ Library.
32 * This is an internal header file, included by other library headers.
33 * You should not attempt to use it directly.
36 #ifndef _VSTRING_UTIL_H
37 #define _VSTRING_UTIL_H 1
39 #pragma GCC system_header
41 #include <ext/vstring_fwd.h>
42 #include <debug/debug.h>
43 #include <bits/stl_function.h> // For less
44 #include <bits/functexcept.h>
46 #include <algorithm> // For std::distance, srd::search.
47 #include <bits/ostream_insert.h>
49 _GLIBCXX_BEGIN_NAMESPACE(__gnu_cxx)
51 template<typename _CharT, typename _Traits, typename _Alloc>
52 struct __vstring_utility
54 typedef typename _Alloc::template rebind<_CharT>::other _CharT_alloc_type;
56 typedef _Traits traits_type;
57 typedef typename _Traits::char_type value_type;
58 typedef typename _CharT_alloc_type::size_type size_type;
59 typedef typename _CharT_alloc_type::pointer pointer;
60 typedef typename _CharT_alloc_type::const_pointer const_pointer;
64 __normal_iterator<pointer, __gnu_cxx::
65 __versa_string<_CharT, _Traits, _Alloc,
69 __normal_iterator<const_pointer, __gnu_cxx::
70 __versa_string<_CharT, _Traits, _Alloc,
76 __normal_iterator<pointer, __gnu_cxx::
77 __versa_string<_CharT, _Traits, _Alloc,
81 __normal_iterator<const_pointer, __gnu_cxx::
82 __versa_string<_CharT, _Traits, _Alloc,
86 // NB: When the allocator is empty, deriving from it saves space
87 // (http://www.cantrip.org/emptyopt.html).
88 template<typename _Alloc1>
92 _Alloc_hider(const _Alloc1& __a, _CharT* __ptr)
93 : _Alloc1(__a), _M_p(__ptr) { }
95 _CharT* _M_p; // The actual data.
98 // For use in _M_construct (_S_construct) forward_iterator_tag.
99 template<typename _Type>
101 _S_is_null_pointer(_Type* __ptr)
102 { return __ptr == 0; }
104 template<typename _Type>
106 _S_is_null_pointer(_Type)
109 // When __n = 1 way faster than the general multichar
110 // traits_type::copy/move/assign.
112 _S_copy(_CharT* __d, const _CharT* __s, size_type __n)
115 traits_type::assign(*__d, *__s);
117 traits_type::copy(__d, __s, __n);
121 _S_move(_CharT* __d, const _CharT* __s, size_type __n)
124 traits_type::assign(*__d, *__s);
126 traits_type::move(__d, __s, __n);
130 _S_assign(_CharT* __d, size_type __n, _CharT __c)
133 traits_type::assign(*__d, __c);
135 traits_type::assign(__d, __n, __c);
138 // _S_copy_chars is a separate template to permit specialization
139 // to optimize for the common case of pointers as iterators.
140 template<typename _Iterator>
142 _S_copy_chars(_CharT* __p, _Iterator __k1, _Iterator __k2)
144 for (; __k1 != __k2; ++__k1, ++__p)
145 traits_type::assign(*__p, *__k1); // These types are off.
149 _S_copy_chars(_CharT* __p, __sso_iterator __k1, __sso_iterator __k2)
150 { _S_copy_chars(__p, __k1.base(), __k2.base()); }
153 _S_copy_chars(_CharT* __p, __const_sso_iterator __k1,
154 __const_sso_iterator __k2)
155 { _S_copy_chars(__p, __k1.base(), __k2.base()); }
158 _S_copy_chars(_CharT* __p, __rc_iterator __k1, __rc_iterator __k2)
159 { _S_copy_chars(__p, __k1.base(), __k2.base()); }
162 _S_copy_chars(_CharT* __p, __const_rc_iterator __k1,
163 __const_rc_iterator __k2)
164 { _S_copy_chars(__p, __k1.base(), __k2.base()); }
167 _S_copy_chars(_CharT* __p, _CharT* __k1, _CharT* __k2)
168 { _S_copy(__p, __k1, __k2 - __k1); }
171 _S_copy_chars(_CharT* __p, const _CharT* __k1, const _CharT* __k2)
172 { _S_copy(__p, __k1, __k2 - __k1); }
175 _GLIBCXX_END_NAMESPACE
177 #endif /* _VSTRING_UTIL_H */