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1 | // TR2 <bool_set> support files -*- C++ -*- |
2 | ||
aa118a03 | 3 | // Copyright (C) 2009-2014 Free Software Foundation, Inc. |
24ef84f6 BK |
4 | // |
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 3, or (at your option) | |
9 | // any later version. | |
10 | ||
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. | |
15 | ||
16 | // Under Section 7 of GPL version 3, you are granted additional | |
17 | // permissions described in the GCC Runtime Library Exception, version | |
18 | // 3.1, as published by the Free Software Foundation. | |
19 | ||
20 | // You should have received a copy of the GNU General Public License and | |
21 | // a copy of the GCC Runtime Library Exception along with this program; | |
22 | // see the files COPYING3 and COPYING.RUNTIME respectively. If not, see | |
23 | // <http://www.gnu.org/licenses/>. | |
24 | ||
25 | /** @file tr2/bool_set.tcc | |
26 | * This is a TR2 C++ Library header. | |
27 | */ | |
28 | ||
29 | #ifndef _GLIBCXX_TR2_BOOL_SET_TCC | |
30 | #define _GLIBCXX_TR2_BOOL_SET_TCC 1 | |
31 | ||
32 | #pragma GCC system_header | |
33 | ||
34 | namespace std _GLIBCXX_VISIBILITY(default) | |
35 | { | |
36 | namespace tr2 | |
37 | { | |
38 | _GLIBCXX_BEGIN_NAMESPACE_VERSION | |
39 | ||
40 | bool_set::_Bool_set_val | |
41 | bool_set::_S_not[4] = | |
42 | { _S_true_, _S_false, _S_indet, _S_empty }; | |
43 | ||
44 | bool_set::_Bool_set_val | |
45 | bool_set::_S_xor[4][4] = | |
46 | { { _S_false, _S_true_, _S_indet, _S_empty }, | |
47 | { _S_true_, _S_false, _S_indet, _S_empty }, | |
48 | { _S_indet, _S_indet, _S_indet, _S_empty }, | |
49 | { _S_empty, _S_empty, _S_empty, _S_empty } }; | |
50 | ||
51 | bool_set::_Bool_set_val | |
52 | bool_set::_S_or[4][4] = | |
53 | { { _S_false, _S_true_, _S_indet, _S_empty }, | |
54 | { _S_true_, _S_true_, _S_true_, _S_empty }, | |
55 | { _S_indet, _S_true_, _S_indet, _S_empty }, | |
56 | { _S_empty, _S_empty, _S_empty, _S_empty } }; | |
57 | ||
58 | bool_set::_Bool_set_val | |
59 | bool_set::_S_and[4][4] = | |
60 | { { _S_false, _S_false, _S_false, _S_empty }, | |
61 | { _S_false, _S_true_, _S_indet, _S_empty }, | |
62 | { _S_false, _S_indet, _S_indet, _S_empty }, | |
63 | { _S_empty, _S_empty, _S_empty, _S_empty } }; | |
64 | ||
65 | bool_set::_Bool_set_val | |
66 | bool_set::_S_eq[4][4] = | |
67 | { { _S_true_, _S_false, _S_indet, _S_empty }, | |
68 | { _S_false, _S_true_, _S_indet, _S_empty }, | |
69 | { _S_indet, _S_indet, _S_indet, _S_empty }, | |
70 | { _S_empty, _S_empty, _S_empty, _S_empty } }; | |
71 | ||
72 | _GLIBCXX_END_NAMESPACE_VERSION | |
73 | } | |
74 | } | |
75 | ||
76 | // I object to these things. | |
77 | // The stuff in locale facets are for basic types. | |
78 | // I think we could hack operator<< and operator>>. | |
79 | ||
80 | /** | |
81 | * @brief Numeric parsing. | |
82 | * | |
83 | * Parses the input stream into the bool @a v. It does so by calling | |
84 | * num_get::do_get(). | |
85 | * | |
86 | * If ios_base::boolalpha is set, attempts to read | |
87 | * ctype<CharT>::truename() or ctype<CharT>::falsename(). Sets | |
88 | * @a v to true or false if successful. Sets err to | |
89 | * ios_base::failbit if reading the string fails. Sets err to | |
90 | * ios_base::eofbit if the stream is emptied. | |
91 | * | |
92 | * If ios_base::boolalpha is not set, proceeds as with reading a long, | |
93 | * except if the value is 1, sets @a v to true, if the value is 0, sets | |
94 | * @a v to false, and otherwise set err to ios_base::failbit. | |
95 | * | |
96 | * @param in Start of input stream. | |
97 | * @param end End of input stream. | |
98 | * @param io Source of locale and flags. | |
99 | * @param err Error flags to set. | |
100 | * @param v Value to format and insert. | |
101 | * @return Iterator after reading. | |
102 | iter_type | |
103 | get(iter_type __in, iter_type __end, ios_base& __io, | |
104 | ios_base::iostate& __err, bool& __v) const | |
105 | { return this->do_get(__in, __end, __io, __err, __v); } | |
106 | */ | |
107 | /* | |
108 | template<typename _CharT, typename _InIter> | |
109 | _InIter | |
110 | num_get<_CharT, _InIter>:: | |
111 | do_get(iter_type __beg, iter_type __end, ios_base& __io, | |
112 | ios_base::iostate& __err, bool_set& __v) const | |
113 | { | |
114 | if (!(__io.flags() & ios_base::boolalpha)) | |
115 | { | |
116 | // Parse bool values as long. | |
117 | // NB: We can't just call do_get(long) here, as it might | |
118 | // refer to a derived class. | |
119 | long __l = -1; | |
120 | __beg = _M_extract_int(__beg, __end, __io, __err, __l); | |
121 | if (__c >= _S_false && __c < _S_empty) | |
122 | __b._M_b = static_cast<_Bool_set_val>(__c); | |
123 | else | |
124 | { | |
125 | // What should we do here? | |
126 | __v = true; | |
127 | __err = ios_base::failbit; | |
128 | if (__beg == __end) | |
129 | __err |= ios_base::eofbit; | |
130 | } | |
131 | } | |
132 | else | |
133 | { | |
134 | // Parse bool values as alphanumeric. | |
135 | typedef __numpunct_cache<_CharT> __cache_type; | |
136 | __use_cache<__cache_type> __uc; | |
137 | const locale& __loc = __io._M_getloc(); | |
138 | const __cache_type* __lc = __uc(__loc); | |
139 | ||
140 | bool __testf = true; | |
141 | bool __testt = true; | |
142 | bool __donef = __lc->_M_falsename_size == 0; | |
143 | bool __donet = __lc->_M_truename_size == 0; | |
144 | bool __testeof = false; | |
145 | size_t __n = 0; | |
146 | while (!__donef || !__donet) | |
147 | { | |
148 | if (__beg == __end) | |
149 | { | |
150 | __testeof = true; | |
151 | break; | |
152 | } | |
153 | ||
154 | const char_type __c = *__beg; | |
155 | ||
156 | if (!__donef) | |
157 | __testf = __c == __lc->_M_falsename[__n]; | |
158 | ||
159 | if (!__testf && __donet) | |
160 | break; | |
161 | ||
162 | if (!__donet) | |
163 | __testt = __c == __lc->_M_truename[__n]; | |
164 | ||
165 | if (!__testt && __donef) | |
166 | break; | |
167 | ||
168 | if (!__testt && !__testf) | |
169 | break; | |
170 | ||
171 | ++__n; | |
172 | ++__beg; | |
173 | ||
174 | __donef = !__testf || __n >= __lc->_M_falsename_size; | |
175 | __donet = !__testt || __n >= __lc->_M_truename_size; | |
176 | } | |
177 | if (__testf && __n == __lc->_M_falsename_size && __n) | |
178 | { | |
179 | __v = false; | |
180 | if (__testt && __n == __lc->_M_truename_size) | |
181 | __err = ios_base::failbit; | |
182 | else | |
183 | __err = __testeof ? ios_base::eofbit : ios_base::goodbit; | |
184 | } | |
185 | else if (__testt && __n == __lc->_M_truename_size && __n) | |
186 | { | |
187 | __v = true; | |
188 | __err = __testeof ? ios_base::eofbit : ios_base::goodbit; | |
189 | } | |
190 | else | |
191 | { | |
192 | // _GLIBCXX_RESOLVE_LIB_DEFECTS | |
193 | // 23. Num_get overflow result. | |
194 | __v = false; | |
195 | __err = ios_base::failbit; | |
196 | if (__testeof) | |
197 | __err |= ios_base::eofbit; | |
198 | } | |
199 | } | |
200 | return __beg; | |
201 | } | |
202 | */ | |
203 | ||
204 | /** | |
205 | * @brief Numeric formatting. | |
206 | * | |
207 | * Formats the boolean @a v and inserts it into a stream. It does so | |
208 | * by calling num_put::do_put(). | |
209 | * | |
210 | * If ios_base::boolalpha is set, writes ctype<CharT>::truename() or | |
211 | * ctype<CharT>::falsename(). Otherwise formats @a v as an int. | |
212 | * | |
213 | * @param s Stream to write to. | |
214 | * @param io Source of locale and flags. | |
215 | * @param fill Char_type to use for filling. | |
216 | * @param v Value to format and insert. | |
217 | * @return Iterator after writing. | |
218 | iter_type | |
219 | put(iter_type __s, ios_base& __f, char_type __fill, bool __v) const | |
220 | { return this->do_put(__s, __f, __fill, __v); } | |
221 | */ | |
222 | ||
223 | /* | |
224 | template<typename _CharT, typename _OutIter> | |
225 | _OutIter | |
226 | num_put<_CharT, _OutIter>:: | |
227 | do_put(iter_type __s, ios_base& __io, char_type __fill, bool_set __v) const | |
228 | { | |
229 | const ios_base::fmtflags __flags = __io.flags(); | |
230 | if ((__flags & ios_base::boolalpha) == 0) | |
231 | { | |
232 | const long __l = __v; | |
233 | __s = _M_insert_int(__s, __io, __fill, __l); | |
234 | } | |
235 | else | |
236 | { | |
237 | typedef __numpunct_cache<_CharT> __cache_type; | |
238 | __use_cache<__cache_type> __uc; | |
239 | const locale& __loc = __io._M_getloc(); | |
240 | const __cache_type* __lc = __uc(__loc); | |
241 | ||
242 | const _CharT* __name = __v ? __lc->_M_truename | |
243 | : __lc->_M_falsename; | |
244 | int __len = __v ? __lc->_M_truename_size | |
245 | : __lc->_M_falsename_size; | |
246 | ||
247 | const streamsize __w = __io.width(); | |
248 | if (__w > static_cast<streamsize>(__len)) | |
249 | { | |
250 | const streamsize __plen = __w - __len; | |
251 | _CharT* __ps | |
252 | = static_cast<_CharT*>(__builtin_alloca(sizeof(_CharT) | |
253 | * __plen)); | |
254 | ||
255 | char_traits<_CharT>::assign(__ps, __plen, __fill); | |
256 | __io.width(0); | |
257 | ||
258 | if ((__flags & ios_base::adjustfield) == ios_base::left) | |
259 | { | |
260 | __s = std::__write(__s, __name, __len); | |
261 | __s = std::__write(__s, __ps, __plen); | |
262 | } | |
263 | else | |
264 | { | |
265 | __s = std::__write(__s, __ps, __plen); | |
266 | __s = std::__write(__s, __name, __len); | |
267 | } | |
268 | return __s; | |
269 | } | |
270 | __io.width(0); | |
271 | __s = std::__write(__s, __name, __len); | |
272 | } | |
273 | return __s; | |
274 | } | |
275 | */ | |
276 | ||
277 | #endif // _GLIBCXX_TR2_BOOL_SET_TCC |