bool_set.tcc
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// TR2 <bool_set> support files -*- C++ -*- // Copyright (C) 2009-2018 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 tr2/bool_set.tcc * This is a TR2 C++ Library header. */ #ifndef _GLIBCXX_TR2_BOOL_SET_TCC #define _GLIBCXX_TR2_BOOL_SET_TCC 1 #pragma GCC system_header namespace std _GLIBCXX_VISIBILITY(default) { _GLIBCXX_BEGIN_NAMESPACE_VERSION namespace tr2 { bool_set::_Bool_set_val bool_set::_S_not[4] = { _S_true_, _S_false, _S_indet, _S_empty }; bool_set::_Bool_set_val bool_set::_S_xor[4][4] = { { _S_false, _S_true_, _S_indet, _S_empty }, { _S_true_, _S_false, _S_indet, _S_empty }, { _S_indet, _S_indet, _S_indet, _S_empty }, { _S_empty, _S_empty, _S_empty, _S_empty } }; bool_set::_Bool_set_val bool_set::_S_or[4][4] = { { _S_false, _S_true_, _S_indet, _S_empty }, { _S_true_, _S_true_, _S_true_, _S_empty }, { _S_indet, _S_true_, _S_indet, _S_empty }, { _S_empty, _S_empty, _S_empty, _S_empty } }; bool_set::_Bool_set_val bool_set::_S_and[4][4] = { { _S_false, _S_false, _S_false, _S_empty }, { _S_false, _S_true_, _S_indet, _S_empty }, { _S_false, _S_indet, _S_indet, _S_empty }, { _S_empty, _S_empty, _S_empty, _S_empty } }; bool_set::_Bool_set_val bool_set::_S_eq[4][4] = { { _S_true_, _S_false, _S_indet, _S_empty }, { _S_false, _S_true_, _S_indet, _S_empty }, { _S_indet, _S_indet, _S_indet, _S_empty }, { _S_empty, _S_empty, _S_empty, _S_empty } }; } _GLIBCXX_END_NAMESPACE_VERSION } // I object to these things. // The stuff in locale facets are for basic types. // I think we could hack operator<< and operator>>. /** * @brief Numeric parsing. * * Parses the input stream into the bool @a v. It does so by calling * num_get::do_get(). * * If ios_base::boolalpha is set, attempts to read * ctype<CharT>::truename() or ctype<CharT>::falsename(). Sets * @a v to true or false if successful. Sets err to * ios_base::failbit if reading the string fails. Sets err to * ios_base::eofbit if the stream is emptied. * * If ios_base::boolalpha is not set, proceeds as with reading a long, * except if the value is 1, sets @a v to true, if the value is 0, sets * @a v to false, and otherwise set err to ios_base::failbit. * * @param in Start of input stream. * @param end End of input stream. * @param io Source of locale and flags. * @param err Error flags to set. * @param v Value to format and insert. * @return Iterator after reading. iter_type get(iter_type __in, iter_type __end, ios_base& __io, ios_base::iostate& __err, bool& __v) const { return this->do_get(__in, __end, __io, __err, __v); } */ /* template<typename _CharT, typename _InIter> _InIter num_get<_CharT, _InIter>:: do_get(iter_type __beg, iter_type __end, ios_base& __io, ios_base::iostate& __err, bool_set& __v) const { if (!(__io.flags() & ios_base::boolalpha)) { // Parse bool values as long. // NB: We can't just call do_get(long) here, as it might // refer to a derived class. long __l = -1; __beg = _M_extract_int(__beg, __end, __io, __err, __l); if (__c >= _S_false && __c < _S_empty) __b._M_b = static_cast<_Bool_set_val>(__c); else { // What should we do here? __v = true; __err = ios_base::failbit; if (__beg == __end) __err |= ios_base::eofbit; } } else { // Parse bool values as alphanumeric. typedef __numpunct_cache<_CharT> __cache_type; __use_cache<__cache_type> __uc; const locale& __loc = __io._M_getloc(); const __cache_type* __lc = __uc(__loc); bool __testf = true; bool __testt = true; bool __donef = __lc->_M_falsename_size == 0; bool __donet = __lc->_M_truename_size == 0; bool __testeof = false; size_t __n = 0; while (!__donef || !__donet) { if (__beg == __end) { __testeof = true; break; } const char_type __c = *__beg; if (!__donef) __testf = __c == __lc->_M_falsename[__n]; if (!__testf && __donet) break; if (!__donet) __testt = __c == __lc->_M_truename[__n]; if (!__testt && __donef) break; if (!__testt && !__testf) break; ++__n; ++__beg; __donef = !__testf || __n >= __lc->_M_falsename_size; __donet = !__testt || __n >= __lc->_M_truename_size; } if (__testf && __n == __lc->_M_falsename_size && __n) { __v = false; if (__testt && __n == __lc->_M_truename_size) __err = ios_base::failbit; else __err = __testeof ? ios_base::eofbit : ios_base::goodbit; } else if (__testt && __n == __lc->_M_truename_size && __n) { __v = true; __err = __testeof ? ios_base::eofbit : ios_base::goodbit; } else { // _GLIBCXX_RESOLVE_LIB_DEFECTS // 23. Num_get overflow result. __v = false; __err = ios_base::failbit; if (__testeof) __err |= ios_base::eofbit; } } return __beg; } */ /** * @brief Numeric formatting. * * Formats the boolean @a v and inserts it into a stream. It does so * by calling num_put::do_put(). * * If ios_base::boolalpha is set, writes ctype<CharT>::truename() or * ctype<CharT>::falsename(). Otherwise formats @a v as an int. * * @param s Stream to write to. * @param io Source of locale and flags. * @param fill Char_type to use for filling. * @param v Value to format and insert. * @return Iterator after writing. iter_type put(iter_type __s, ios_base& __f, char_type __fill, bool __v) const { return this->do_put(__s, __f, __fill, __v); } */ /* template<typename _CharT, typename _OutIter> _OutIter num_put<_CharT, _OutIter>:: do_put(iter_type __s, ios_base& __io, char_type __fill, bool_set __v) const { const ios_base::fmtflags __flags = __io.flags(); if ((__flags & ios_base::boolalpha) == 0) { const long __l = __v; __s = _M_insert_int(__s, __io, __fill, __l); } else { typedef __numpunct_cache<_CharT> __cache_type; __use_cache<__cache_type> __uc; const locale& __loc = __io._M_getloc(); const __cache_type* __lc = __uc(__loc); const _CharT* __name = __v ? __lc->_M_truename : __lc->_M_falsename; int __len = __v ? __lc->_M_truename_size : __lc->_M_falsename_size; const streamsize __w = __io.width(); if (__w > static_cast<streamsize>(__len)) { const streamsize __plen = __w - __len; _CharT* __ps = static_cast<_CharT*>(__builtin_alloca(sizeof(_CharT) * __plen)); char_traits<_CharT>::assign(__ps, __plen, __fill); __io.width(0); if ((__flags & ios_base::adjustfield) == ios_base::left) { __s = std::__write(__s, __name, __len); __s = std::__write(__s, __ps, __plen); } else { __s = std::__write(__s, __ps, __plen); __s = std::__write(__s, __name, __len); } return __s; } __io.width(0); __s = std::__write(__s, __name, __len); } return __s; } */ #endif // _GLIBCXX_TR2_BOOL_SET_TCC
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