278 lines
8.1 KiB
Plaintext
278 lines
8.1 KiB
Plaintext
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// TR2 <bool_set> support files -*- C++ -*-
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// Copyright (C) 2009-2019 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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// 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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// 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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// 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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/** @file tr2/bool_set.tcc
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* This is a TR2 C++ Library header.
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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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#pragma GCC system_header
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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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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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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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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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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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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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_GLIBCXX_END_NAMESPACE_VERSION
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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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* @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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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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const char_type __c = *__beg;
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if (!__donef)
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__testf = __c == __lc->_M_falsename[__n];
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if (!__testf && __donet)
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break;
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if (!__donet)
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__testt = __c == __lc->_M_truename[__n];
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if (!__testt && __donef)
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break;
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if (!__testt && !__testf)
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break;
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++__n;
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++__beg;
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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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* @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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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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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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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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char_traits<_CharT>::assign(__ps, __plen, __fill);
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__io.width(0);
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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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#endif // _GLIBCXX_TR2_BOOL_SET_TCC
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