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// TR2 <bool_set> support files -*- C++ -*- |
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|
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// Copyright (C) 2009-2021 Free Software Foundation, Inc. |
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// |
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// This file is part of the GNU ISO C++ Library. This library is free |
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// software; you can redistribute it and/or modify it under the |
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// terms of the GNU General Public License as published by the |
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// Free Software Foundation; either version 3, or (at your option) |
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// any later version. |
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|
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// This library is distributed in the hope that it will be useful, |
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// but WITHOUT ANY WARRANTY; without even the implied warranty of |
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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// GNU General Public License for more details. |
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|
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// Under Section 7 of GPL version 3, you are granted additional |
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// permissions described in the GCC Runtime Library Exception, version |
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// 3.1, as published by the Free Software Foundation. |
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|
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// You should have received a copy of the GNU General Public License and |
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// a copy of the GCC Runtime Library Exception along with this program; |
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// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see |
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// <http://www.gnu.org/licenses/>. |
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|
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/** @file tr2/bool_set.tcc |
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* This is a TR2 C++ Library header. |
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*/ |
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|
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#ifndef _GLIBCXX_TR2_BOOL_SET_TCC |
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#define _GLIBCXX_TR2_BOOL_SET_TCC 1 |
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|
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#pragma GCC system_header |
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|
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namespace std _GLIBCXX_VISIBILITY(default) |
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{ |
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_GLIBCXX_BEGIN_NAMESPACE_VERSION |
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|
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namespace tr2 |
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{ |
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bool_set::_Bool_set_val |
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bool_set::_S_not[4] = |
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{ _S_true_, _S_false, _S_indet, _S_empty }; |
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|
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bool_set::_Bool_set_val |
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bool_set::_S_xor[4][4] = |
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{ { _S_false, _S_true_, _S_indet, _S_empty }, |
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{ _S_true_, _S_false, _S_indet, _S_empty }, |
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{ _S_indet, _S_indet, _S_indet, _S_empty }, |
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{ _S_empty, _S_empty, _S_empty, _S_empty } }; |
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|
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bool_set::_Bool_set_val |
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bool_set::_S_or[4][4] = |
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{ { _S_false, _S_true_, _S_indet, _S_empty }, |
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{ _S_true_, _S_true_, _S_true_, _S_empty }, |
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{ _S_indet, _S_true_, _S_indet, _S_empty }, |
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{ _S_empty, _S_empty, _S_empty, _S_empty } }; |
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|
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bool_set::_Bool_set_val |
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bool_set::_S_and[4][4] = |
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{ { _S_false, _S_false, _S_false, _S_empty }, |
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{ _S_false, _S_true_, _S_indet, _S_empty }, |
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{ _S_false, _S_indet, _S_indet, _S_empty }, |
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{ _S_empty, _S_empty, _S_empty, _S_empty } }; |
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|
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bool_set::_Bool_set_val |
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bool_set::_S_eq[4][4] = |
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{ { _S_true_, _S_false, _S_indet, _S_empty }, |
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{ _S_false, _S_true_, _S_indet, _S_empty }, |
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{ _S_indet, _S_indet, _S_indet, _S_empty }, |
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{ _S_empty, _S_empty, _S_empty, _S_empty } }; |
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} |
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|
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_GLIBCXX_END_NAMESPACE_VERSION |
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} |
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|
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// I object to these things. |
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// The stuff in locale facets are for basic types. |
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// I think we could hack operator<< and operator>>. |
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|
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/** |
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* @brief Numeric parsing. |
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* |
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* Parses the input stream into the bool @a v. It does so by calling |
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* num_get::do_get(). |
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* |
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* If ios_base::boolalpha is set, attempts to read |
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* ctype<CharT>::truename() or ctype<CharT>::falsename(). Sets |
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* @a v to true or false if successful. Sets err to |
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* ios_base::failbit if reading the string fails. Sets err to |
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* ios_base::eofbit if the stream is emptied. |
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* |
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* If ios_base::boolalpha is not set, proceeds as with reading a long, |
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* except if the value is 1, sets @a v to true, if the value is 0, sets |
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* @a v to false, and otherwise set err to ios_base::failbit. |
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* |
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* @param in Start of input stream. |
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* @param end End of input stream. |
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* @param io Source of locale and flags. |
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* @param err Error flags to set. |
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* @param v Value to format and insert. |
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* @return Iterator after reading. |
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iter_type |
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get(iter_type __in, iter_type __end, ios_base& __io, |
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ios_base::iostate& __err, bool& __v) const |
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{ return this->do_get(__in, __end, __io, __err, __v); } |
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*/ |
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/* |
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template<typename _CharT, typename _InIter> |
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_InIter |
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num_get<_CharT, _InIter>:: |
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do_get(iter_type __beg, iter_type __end, ios_base& __io, |
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ios_base::iostate& __err, bool_set& __v) const |
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{ |
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if (!(__io.flags() & ios_base::boolalpha)) |
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{ |
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// Parse bool values as long. |
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// NB: We can't just call do_get(long) here, as it might |
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// refer to a derived class. |
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long __l = -1; |
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__beg = _M_extract_int(__beg, __end, __io, __err, __l); |
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if (__c >= _S_false && __c < _S_empty) |
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__b._M_b = static_cast<_Bool_set_val>(__c); |
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else |
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{ |
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// What should we do here? |
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__v = true; |
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__err = ios_base::failbit; |
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if (__beg == __end) |
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__err |= ios_base::eofbit; |
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} |
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} |
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else |
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{ |
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// Parse bool values as alphanumeric. |
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typedef __numpunct_cache<_CharT> __cache_type; |
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__use_cache<__cache_type> __uc; |
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const locale& __loc = __io._M_getloc(); |
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const __cache_type* __lc = __uc(__loc); |
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|
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bool __testf = true; |
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bool __testt = true; |
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bool __donef = __lc->_M_falsename_size == 0; |
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bool __donet = __lc->_M_truename_size == 0; |
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bool __testeof = false; |
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size_t __n = 0; |
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while (!__donef || !__donet) |
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{ |
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if (__beg == __end) |
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{ |
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__testeof = true; |
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break; |
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} |
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|
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const char_type __c = *__beg; |
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|
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if (!__donef) |
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__testf = __c == __lc->_M_falsename[__n]; |
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|
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if (!__testf && __donet) |
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break; |
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|
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if (!__donet) |
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__testt = __c == __lc->_M_truename[__n]; |
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|
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if (!__testt && __donef) |
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break; |
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|
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if (!__testt && !__testf) |
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break; |
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|
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++__n; |
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++__beg; |
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|
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__donef = !__testf || __n >= __lc->_M_falsename_size; |
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__donet = !__testt || __n >= __lc->_M_truename_size; |
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} |
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if (__testf && __n == __lc->_M_falsename_size && __n) |
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{ |
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__v = false; |
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if (__testt && __n == __lc->_M_truename_size) |
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__err = ios_base::failbit; |
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else |
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__err = __testeof ? ios_base::eofbit : ios_base::goodbit; |
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} |
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else if (__testt && __n == __lc->_M_truename_size && __n) |
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{ |
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__v = true; |
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__err = __testeof ? ios_base::eofbit : ios_base::goodbit; |
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} |
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else |
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{ |
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// _GLIBCXX_RESOLVE_LIB_DEFECTS |
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// 23. Num_get overflow result. |
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__v = false; |
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__err = ios_base::failbit; |
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if (__testeof) |
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__err |= ios_base::eofbit; |
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} |
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} |
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return __beg; |
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} |
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*/ |
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|
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/** |
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* @brief Numeric formatting. |
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* |
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* Formats the boolean @a v and inserts it into a stream. It does so |
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* by calling num_put::do_put(). |
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* |
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* If ios_base::boolalpha is set, writes ctype<CharT>::truename() or |
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* ctype<CharT>::falsename(). Otherwise formats @a v as an int. |
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* |
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* @param s Stream to write to. |
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* @param io Source of locale and flags. |
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* @param fill Char_type to use for filling. |
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* @param v Value to format and insert. |
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* @return Iterator after writing. |
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iter_type |
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put(iter_type __s, ios_base& __f, char_type __fill, bool __v) const |
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{ return this->do_put(__s, __f, __fill, __v); } |
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*/ |
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|
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/* |
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template<typename _CharT, typename _OutIter> |
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_OutIter |
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num_put<_CharT, _OutIter>:: |
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do_put(iter_type __s, ios_base& __io, char_type __fill, bool_set __v) const |
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{ |
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const ios_base::fmtflags __flags = __io.flags(); |
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if ((__flags & ios_base::boolalpha) == 0) |
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{ |
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const long __l = __v; |
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__s = _M_insert_int(__s, __io, __fill, __l); |
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} |
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else |
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{ |
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typedef __numpunct_cache<_CharT> __cache_type; |
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__use_cache<__cache_type> __uc; |
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const locale& __loc = __io._M_getloc(); |
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const __cache_type* __lc = __uc(__loc); |
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|
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const _CharT* __name = __v ? __lc->_M_truename |
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: __lc->_M_falsename; |
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int __len = __v ? __lc->_M_truename_size |
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: __lc->_M_falsename_size; |
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|
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const streamsize __w = __io.width(); |
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if (__w > static_cast<streamsize>(__len)) |
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{ |
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const streamsize __plen = __w - __len; |
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_CharT* __ps |
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= static_cast<_CharT*>(__builtin_alloca(sizeof(_CharT) |
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* __plen)); |
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|
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char_traits<_CharT>::assign(__ps, __plen, __fill); |
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__io.width(0); |
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|
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if ((__flags & ios_base::adjustfield) == ios_base::left) |
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{ |
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__s = std::__write(__s, __name, __len); |
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__s = std::__write(__s, __ps, __plen); |
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} |
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else |
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{ |
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__s = std::__write(__s, __ps, __plen); |
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__s = std::__write(__s, __name, __len); |
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} |
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return __s; |
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} |
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__io.width(0); |
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__s = std::__write(__s, __name, __len); |
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} |
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return __s; |
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} |
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*/ |
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|
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#endif // _GLIBCXX_TR2_BOOL_SET_TCC |
