428 lines
12 KiB
C++
428 lines
12 KiB
C++
// Debugging bitset implementation -*- C++ -*-
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// Copyright (C) 2003-2018 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 debug/bitset
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* This file is a GNU debug extension to the Standard C++ Library.
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*/
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#ifndef _GLIBCXX_DEBUG_BITSET
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#define _GLIBCXX_DEBUG_BITSET
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#pragma GCC system_header
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#include <bitset>
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#include <debug/safe_sequence.h>
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#include <debug/safe_iterator.h>
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namespace std _GLIBCXX_VISIBILITY(default)
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{
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namespace __debug
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{
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/// Class std::bitset with additional safety/checking/debug instrumentation.
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template<size_t _Nb>
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class bitset
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: public _GLIBCXX_STD_C::bitset<_Nb>
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#if __cplusplus < 201103L
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, public __gnu_debug::_Safe_sequence_base
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#endif
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{
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typedef _GLIBCXX_STD_C::bitset<_Nb> _Base;
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public:
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// In C++11 we rely on normal reference type to preserve the property
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// of bitset to be use as a literal.
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// TODO: Find another solution.
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#if __cplusplus >= 201103L
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typedef typename _Base::reference reference;
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#else
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// bit reference:
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class reference
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: private _Base::reference
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, public __gnu_debug::_Safe_iterator_base
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{
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typedef typename _Base::reference _Base_ref;
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friend class bitset;
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reference();
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reference(const _Base_ref& __base, bitset* __seq) _GLIBCXX_NOEXCEPT
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: _Base_ref(__base)
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, _Safe_iterator_base(__seq, false)
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{ }
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public:
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reference(const reference& __x) _GLIBCXX_NOEXCEPT
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: _Base_ref(__x)
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, _Safe_iterator_base(__x, false)
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{ }
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reference&
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operator=(bool __x) _GLIBCXX_NOEXCEPT
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{
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_GLIBCXX_DEBUG_VERIFY(!this->_M_singular(),
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_M_message(__gnu_debug::__msg_bad_bitset_write)
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._M_iterator(*this));
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*static_cast<_Base_ref*>(this) = __x;
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return *this;
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}
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reference&
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operator=(const reference& __x) _GLIBCXX_NOEXCEPT
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{
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_GLIBCXX_DEBUG_VERIFY(!__x._M_singular(),
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_M_message(__gnu_debug::__msg_bad_bitset_read)
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._M_iterator(__x));
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_GLIBCXX_DEBUG_VERIFY(!this->_M_singular(),
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_M_message(__gnu_debug::__msg_bad_bitset_write)
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._M_iterator(*this));
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*static_cast<_Base_ref*>(this) = __x;
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return *this;
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}
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bool
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operator~() const _GLIBCXX_NOEXCEPT
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{
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_GLIBCXX_DEBUG_VERIFY(!this->_M_singular(),
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_M_message(__gnu_debug::__msg_bad_bitset_read)
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._M_iterator(*this));
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return ~(*static_cast<const _Base_ref*>(this));
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}
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operator bool() const _GLIBCXX_NOEXCEPT
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{
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_GLIBCXX_DEBUG_VERIFY(!this->_M_singular(),
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_M_message(__gnu_debug::__msg_bad_bitset_read)
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._M_iterator(*this));
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return *static_cast<const _Base_ref*>(this);
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}
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reference&
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flip() _GLIBCXX_NOEXCEPT
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{
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_GLIBCXX_DEBUG_VERIFY(!this->_M_singular(),
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_M_message(__gnu_debug::__msg_bad_bitset_flip)
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._M_iterator(*this));
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_Base_ref::flip();
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return *this;
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}
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};
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#endif
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// 23.3.5.1 constructors:
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_GLIBCXX_CONSTEXPR bitset() _GLIBCXX_NOEXCEPT
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: _Base() { }
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#if __cplusplus >= 201103L
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constexpr bitset(unsigned long long __val) noexcept
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#else
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bitset(unsigned long __val)
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#endif
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: _Base(__val) { }
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template<typename _CharT, typename _Traits, typename _Alloc>
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explicit
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bitset(const std::basic_string<_CharT, _Traits, _Alloc>& __str,
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typename std::basic_string<_CharT, _Traits, _Alloc>::size_type
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__pos = 0,
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typename std::basic_string<_CharT, _Traits, _Alloc>::size_type
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__n = (std::basic_string<_CharT, _Traits, _Alloc>::npos))
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: _Base(__str, __pos, __n) { }
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// _GLIBCXX_RESOLVE_LIB_DEFECTS
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// 396. what are characters zero and one.
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template<class _CharT, class _Traits, class _Alloc>
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bitset(const std::basic_string<_CharT, _Traits, _Alloc>& __str,
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typename std::basic_string<_CharT, _Traits, _Alloc>::size_type
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__pos,
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typename std::basic_string<_CharT, _Traits, _Alloc>::size_type
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__n,
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_CharT __zero, _CharT __one = _CharT('1'))
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: _Base(__str, __pos, __n, __zero, __one) { }
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bitset(const _Base& __x) : _Base(__x) { }
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#if __cplusplus >= 201103L
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template<typename _CharT>
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explicit
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bitset(const _CharT* __str,
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typename std::basic_string<_CharT>::size_type __n
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= std::basic_string<_CharT>::npos,
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_CharT __zero = _CharT('0'), _CharT __one = _CharT('1'))
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: _Base(__str, __n, __zero, __one) { }
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#endif
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// 23.3.5.2 bitset operations:
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bitset<_Nb>&
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operator&=(const bitset<_Nb>& __rhs) _GLIBCXX_NOEXCEPT
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{
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_M_base() &= __rhs;
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return *this;
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}
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bitset<_Nb>&
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operator|=(const bitset<_Nb>& __rhs) _GLIBCXX_NOEXCEPT
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{
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_M_base() |= __rhs;
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return *this;
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}
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bitset<_Nb>&
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operator^=(const bitset<_Nb>& __rhs) _GLIBCXX_NOEXCEPT
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{
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_M_base() ^= __rhs;
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return *this;
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}
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bitset<_Nb>&
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operator<<=(size_t __pos) _GLIBCXX_NOEXCEPT
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{
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_M_base() <<= __pos;
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return *this;
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}
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bitset<_Nb>&
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operator>>=(size_t __pos) _GLIBCXX_NOEXCEPT
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{
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_M_base() >>= __pos;
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return *this;
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}
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bitset<_Nb>&
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set() _GLIBCXX_NOEXCEPT
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{
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_Base::set();
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return *this;
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}
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// _GLIBCXX_RESOLVE_LIB_DEFECTS
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// 186. bitset::set() second parameter should be bool
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bitset<_Nb>&
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set(size_t __pos, bool __val = true)
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{
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_Base::set(__pos, __val);
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return *this;
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}
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bitset<_Nb>&
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reset() _GLIBCXX_NOEXCEPT
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{
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_Base::reset();
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return *this;
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}
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bitset<_Nb>&
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reset(size_t __pos)
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{
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_Base::reset(__pos);
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return *this;
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}
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bitset<_Nb>
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operator~() const _GLIBCXX_NOEXCEPT
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{ return bitset(~_M_base()); }
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bitset<_Nb>&
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flip() _GLIBCXX_NOEXCEPT
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{
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_Base::flip();
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return *this;
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}
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bitset<_Nb>&
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flip(size_t __pos)
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{
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_Base::flip(__pos);
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return *this;
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}
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// element access:
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// _GLIBCXX_RESOLVE_LIB_DEFECTS
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// 11. Bitset minor problems
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reference
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operator[](size_t __pos)
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{
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__glibcxx_check_subscript(__pos);
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#if __cplusplus >= 201103L
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return _M_base()[__pos];
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#else
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return reference(_M_base()[__pos], this);
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#endif
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}
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// _GLIBCXX_RESOLVE_LIB_DEFECTS
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// 11. Bitset minor problems
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_GLIBCXX_CONSTEXPR bool
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operator[](size_t __pos) const
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{
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#if __cplusplus < 201103L
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// TODO: Check in debug-mode too.
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__glibcxx_check_subscript(__pos);
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#endif
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return _Base::operator[](__pos);
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}
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using _Base::to_ulong;
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#if __cplusplus >= 201103L
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using _Base::to_ullong;
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#endif
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template <typename _CharT, typename _Traits, typename _Alloc>
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std::basic_string<_CharT, _Traits, _Alloc>
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to_string() const
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{ return _M_base().template to_string<_CharT, _Traits, _Alloc>(); }
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// _GLIBCXX_RESOLVE_LIB_DEFECTS
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// 396. what are characters zero and one.
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template<class _CharT, class _Traits, class _Alloc>
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std::basic_string<_CharT, _Traits, _Alloc>
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to_string(_CharT __zero, _CharT __one = _CharT('1')) const
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{
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return _M_base().template
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to_string<_CharT, _Traits, _Alloc>(__zero, __one);
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}
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// _GLIBCXX_RESOLVE_LIB_DEFECTS
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// 434. bitset::to_string() hard to use.
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template<typename _CharT, typename _Traits>
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std::basic_string<_CharT, _Traits, std::allocator<_CharT> >
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to_string() const
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{ return to_string<_CharT, _Traits, std::allocator<_CharT> >(); }
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// _GLIBCXX_RESOLVE_LIB_DEFECTS
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// 853. to_string needs updating with zero and one.
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template<class _CharT, class _Traits>
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std::basic_string<_CharT, _Traits, std::allocator<_CharT> >
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to_string(_CharT __zero, _CharT __one = _CharT('1')) const
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{ return to_string<_CharT, _Traits,
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std::allocator<_CharT> >(__zero, __one); }
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template<typename _CharT>
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std::basic_string<_CharT, std::char_traits<_CharT>,
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std::allocator<_CharT> >
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to_string() const
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{
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return to_string<_CharT, std::char_traits<_CharT>,
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std::allocator<_CharT> >();
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}
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template<class _CharT>
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std::basic_string<_CharT, std::char_traits<_CharT>,
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std::allocator<_CharT> >
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to_string(_CharT __zero, _CharT __one = _CharT('1')) const
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{
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return to_string<_CharT, std::char_traits<_CharT>,
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std::allocator<_CharT> >(__zero, __one);
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}
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std::basic_string<char, std::char_traits<char>, std::allocator<char> >
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to_string() const
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{
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return to_string<char,std::char_traits<char>,std::allocator<char> >();
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}
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std::basic_string<char, std::char_traits<char>, std::allocator<char> >
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to_string(char __zero, char __one = '1') const
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{
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return to_string<char, std::char_traits<char>,
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std::allocator<char> >(__zero, __one);
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}
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using _Base::count;
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using _Base::size;
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bool
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operator==(const bitset<_Nb>& __rhs) const _GLIBCXX_NOEXCEPT
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{ return _M_base() == __rhs; }
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bool
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operator!=(const bitset<_Nb>& __rhs) const _GLIBCXX_NOEXCEPT
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{ return _M_base() != __rhs; }
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using _Base::test;
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using _Base::all;
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using _Base::any;
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using _Base::none;
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bitset<_Nb>
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operator<<(size_t __pos) const _GLIBCXX_NOEXCEPT
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{ return bitset<_Nb>(_M_base() << __pos); }
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bitset<_Nb>
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operator>>(size_t __pos) const _GLIBCXX_NOEXCEPT
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{ return bitset<_Nb>(_M_base() >> __pos); }
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_Base&
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_M_base() _GLIBCXX_NOEXCEPT
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{ return *this; }
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const _Base&
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_M_base() const _GLIBCXX_NOEXCEPT
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{ return *this; }
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};
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template<size_t _Nb>
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bitset<_Nb>
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operator&(const bitset<_Nb>& __x, const bitset<_Nb>& __y) _GLIBCXX_NOEXCEPT
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{ return bitset<_Nb>(__x) &= __y; }
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template<size_t _Nb>
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bitset<_Nb>
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operator|(const bitset<_Nb>& __x, const bitset<_Nb>& __y) _GLIBCXX_NOEXCEPT
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{ return bitset<_Nb>(__x) |= __y; }
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template<size_t _Nb>
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bitset<_Nb>
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operator^(const bitset<_Nb>& __x, const bitset<_Nb>& __y) _GLIBCXX_NOEXCEPT
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{ return bitset<_Nb>(__x) ^= __y; }
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template<typename _CharT, typename _Traits, size_t _Nb>
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std::basic_istream<_CharT, _Traits>&
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operator>>(std::basic_istream<_CharT, _Traits>& __is, bitset<_Nb>& __x)
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{ return __is >> __x._M_base(); }
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template<typename _CharT, typename _Traits, size_t _Nb>
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std::basic_ostream<_CharT, _Traits>&
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operator<<(std::basic_ostream<_CharT, _Traits>& __os,
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const bitset<_Nb>& __x)
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{ return __os << __x._M_base(); }
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} // namespace __debug
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#if __cplusplus >= 201103L
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// DR 1182.
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/// std::hash specialization for bitset.
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template<size_t _Nb>
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struct hash<__debug::bitset<_Nb>>
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: public __hash_base<size_t, __debug::bitset<_Nb>>
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{
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size_t
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operator()(const __debug::bitset<_Nb>& __b) const noexcept
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{ return std::hash<_GLIBCXX_STD_C::bitset<_Nb>>()(__b._M_base()); }
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};
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#endif
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} // namespace std
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#endif
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