7778fa6e3b
2003-06-04 Paolo Carlini <pcarlini@unitus.it> * include/bits/basic_string.h (_M_fold, insert(iterator, _CharT), erase(iterator), erase(iterator, iterator), c_str, compare(const basic_string&)): Constify various variables. * include/bits/basic_string.tcc (_S_construct(_InIter, _InIter, const _Alloc&, input_iterator_tag), _M_destroy, _M_mutate, _S_create, resize, _M_replace, _M_replace_safe, append(const basic_string&), append(const basic_string&, size_type, size_type), append(const _CharT*, size_type), append(size_type, _CharT), operator+(const _CharT*, const basic_string&), operator+(_CharT, const basic_string&), replace(iterator, iterator, size_type, _CharT), find(const _CharT*, size_type, size_type), find(_CharT, size_type), rfind(const _CharT*, size_type, size_type), rfind(_CharT, size_type), compare(size_type, size_type, const basic_string&), compare(size_type, size_type, const basic_string&, size_type, size_type), compare(const _CharT*), compare(size_type, size_type, const _CharT*), compare(size_type, size_type, const _CharT*, size_type)): Likewise. From-SVN: r67468
1082 lines
38 KiB
C++
1082 lines
38 KiB
C++
// Components for manipulating sequences of characters -*- C++ -*-
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// Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002, 2003
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// 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 2, 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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// You should have received a copy of the GNU General Public License along
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// with this library; see the file COPYING. If not, write to the Free
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// Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307,
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// USA.
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// As a special exception, you may use this file as part of a free software
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// library without restriction. Specifically, if other files instantiate
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// templates or use macros or inline functions from this file, or you compile
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// this file and link it with other files to produce an executable, this
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// file does not by itself cause the resulting executable to be covered by
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// the GNU General Public License. This exception does not however
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// invalidate any other reasons why the executable file might be covered by
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// the GNU General Public License.
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//
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// ISO C++ 14882: 21 Strings library
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//
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// This file is included by <string>. It is not meant to be included
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// separately.
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// Written by Jason Merrill based upon the specification by Takanori Adachi
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// in ANSI X3J16/94-0013R2. Rewritten by Nathan Myers to ISO-14882.
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#ifndef _CPP_BITS_STRING_TCC
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#define _CPP_BITS_STRING_TCC 1
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#pragma GCC system_header
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namespace std
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{
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template<typename _CharT, typename _Traits, typename _Alloc>
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const typename basic_string<_CharT, _Traits, _Alloc>::size_type
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basic_string<_CharT, _Traits, _Alloc>::
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_Rep::_S_max_size = (((npos - sizeof(_Rep))/sizeof(_CharT)) - 1) / 4;
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template<typename _CharT, typename _Traits, typename _Alloc>
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const _CharT
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basic_string<_CharT, _Traits, _Alloc>::
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_Rep::_S_terminal = _CharT();
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template<typename _CharT, typename _Traits, typename _Alloc>
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const typename basic_string<_CharT, _Traits, _Alloc>::size_type
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basic_string<_CharT, _Traits, _Alloc>::npos;
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// Linker sets _S_empty_rep_storage to all 0s (one reference, empty string)
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// at static init time (before static ctors are run).
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template<typename _CharT, typename _Traits, typename _Alloc>
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typename basic_string<_CharT, _Traits, _Alloc>::size_type
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basic_string<_CharT, _Traits, _Alloc>::_S_empty_rep_storage[
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(sizeof(_Rep) + sizeof(_CharT) + sizeof(size_type) - 1)/sizeof(size_type)];
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// NB: This is the special case for Input Iterators, used in
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// istreambuf_iterators, etc.
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// Input Iterators have a cost structure very different from
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// pointers, calling for a different coding style.
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template<typename _CharT, typename _Traits, typename _Alloc>
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template<typename _InIter>
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_CharT*
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basic_string<_CharT, _Traits, _Alloc>::
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_S_construct(_InIter __beg, _InIter __end, const _Alloc& __a,
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input_iterator_tag)
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{
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if (__beg == __end && __a == _Alloc())
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return _S_empty_rep()._M_refcopy();
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// Avoid reallocation for common case.
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_CharT __buf[100];
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size_type __i = 0;
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while (__beg != __end && __i < sizeof(__buf) / sizeof(_CharT))
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{
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__buf[__i++] = *__beg;
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++__beg;
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}
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_Rep* __r = _Rep::_S_create(__i, __a);
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traits_type::copy(__r->_M_refdata(), __buf, __i);
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__r->_M_length = __i;
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try
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{
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// NB: this loop looks precisely this way because
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// it avoids comparing __beg != __end any more
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// than strictly necessary; != might be expensive!
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for (;;)
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{
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_CharT* __p = __r->_M_refdata() + __r->_M_length;
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_CharT* __last = __r->_M_refdata() + __r->_M_capacity;
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for (;;)
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{
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if (__beg == __end)
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{
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__r->_M_length = __p - __r->_M_refdata();
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*__p = _Rep::_S_terminal; // grrr.
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return __r->_M_refdata();
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}
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if (__p == __last)
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break;
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*__p++ = *__beg;
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++__beg;
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}
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// Allocate more space.
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const size_type __len = __p - __r->_M_refdata();
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_Rep* __another = _Rep::_S_create(__len + 1, __a);
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traits_type::copy(__another->_M_refdata(),
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__r->_M_refdata(), __len);
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__r->_M_destroy(__a);
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__r = __another;
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__r->_M_length = __len;
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}
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}
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catch(...)
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{
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__r->_M_destroy(__a);
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__throw_exception_again;
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}
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return 0;
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}
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template<typename _CharT, typename _Traits, typename _Alloc>
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template <class _InIter>
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_CharT*
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basic_string<_CharT, _Traits, _Alloc>::
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_S_construct(_InIter __beg, _InIter __end, const _Alloc& __a,
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forward_iterator_tag)
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{
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if (__beg == __end && __a == _Alloc())
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return _S_empty_rep()._M_refcopy();
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// NB: Not required, but considered best practice.
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if (__builtin_expect(__beg == _InIter(), 0))
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__throw_logic_error("basic_string::_S_construct NULL not valid");
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const size_type __dnew = static_cast<size_type>(std::distance(__beg, __end));
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// Check for out_of_range and length_error exceptions.
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_Rep* __r = _Rep::_S_create(__dnew, __a);
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try
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{ _S_copy_chars(__r->_M_refdata(), __beg, __end); }
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catch(...)
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{
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__r->_M_destroy(__a);
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__throw_exception_again;
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}
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__r->_M_length = __dnew;
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__r->_M_refdata()[__dnew] = _Rep::_S_terminal; // grrr.
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return __r->_M_refdata();
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}
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template<typename _CharT, typename _Traits, typename _Alloc>
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_CharT*
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basic_string<_CharT, _Traits, _Alloc>::
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_S_construct(size_type __n, _CharT __c, const _Alloc& __a)
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{
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if (__n == 0 && __a == _Alloc())
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return _S_empty_rep()._M_refcopy();
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// Check for out_of_range and length_error exceptions.
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_Rep* __r = _Rep::_S_create(__n, __a);
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try
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{
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if (__n)
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traits_type::assign(__r->_M_refdata(), __n, __c);
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}
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catch(...)
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{
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__r->_M_destroy(__a);
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__throw_exception_again;
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}
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__r->_M_length = __n;
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__r->_M_refdata()[__n] = _Rep::_S_terminal; // grrr
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return __r->_M_refdata();
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}
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template<typename _CharT, typename _Traits, typename _Alloc>
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basic_string<_CharT, _Traits, _Alloc>::
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basic_string(const basic_string& __str)
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: _M_dataplus(__str._M_rep()->_M_grab(_Alloc(), __str.get_allocator()),
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__str.get_allocator())
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{ }
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template<typename _CharT, typename _Traits, typename _Alloc>
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basic_string<_CharT, _Traits, _Alloc>::
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basic_string(const _Alloc& __a)
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: _M_dataplus(_S_construct(size_type(), _CharT(), __a), __a)
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{ }
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template<typename _CharT, typename _Traits, typename _Alloc>
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basic_string<_CharT, _Traits, _Alloc>::
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basic_string(const basic_string& __str, size_type __pos, size_type __n)
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: _M_dataplus(_S_construct(__str._M_check(__pos),
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__str._M_fold(__pos, __n), _Alloc()), _Alloc())
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{ }
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template<typename _CharT, typename _Traits, typename _Alloc>
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basic_string<_CharT, _Traits, _Alloc>::
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basic_string(const basic_string& __str, size_type __pos,
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size_type __n, const _Alloc& __a)
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: _M_dataplus(_S_construct(__str._M_check(__pos),
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__str._M_fold(__pos, __n), __a), __a)
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{ }
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template<typename _CharT, typename _Traits, typename _Alloc>
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basic_string<_CharT, _Traits, _Alloc>::
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basic_string(const _CharT* __s, size_type __n, const _Alloc& __a)
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: _M_dataplus(_S_construct(__s, __s + __n, __a), __a)
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{ }
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template<typename _CharT, typename _Traits, typename _Alloc>
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basic_string<_CharT, _Traits, _Alloc>::
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basic_string(const _CharT* __s, const _Alloc& __a)
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: _M_dataplus(_S_construct(__s, __s ? __s + traits_type::length(__s) :
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__s + npos, __a), __a)
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{ }
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template<typename _CharT, typename _Traits, typename _Alloc>
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basic_string<_CharT, _Traits, _Alloc>::
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basic_string(size_type __n, _CharT __c, const _Alloc& __a)
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: _M_dataplus(_S_construct(__n, __c, __a), __a)
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{ }
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template<typename _CharT, typename _Traits, typename _Alloc>
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template<typename _InputIter>
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basic_string<_CharT, _Traits, _Alloc>::
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basic_string(_InputIter __beg, _InputIter __end, const _Alloc& __a)
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: _M_dataplus(_S_construct(__beg, __end, __a), __a)
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{ }
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template<typename _CharT, typename _Traits, typename _Alloc>
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basic_string<_CharT, _Traits, _Alloc>&
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basic_string<_CharT, _Traits, _Alloc>::assign(const basic_string& __str)
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{
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if (_M_rep() != __str._M_rep())
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{
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// XXX MT
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allocator_type __a = this->get_allocator();
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_CharT* __tmp = __str._M_rep()->_M_grab(__a, __str.get_allocator());
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_M_rep()->_M_dispose(__a);
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_M_data(__tmp);
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}
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return *this;
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}
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template<typename _CharT, typename _Traits, typename _Alloc>
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basic_string<_CharT, _Traits, _Alloc>&
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basic_string<_CharT, _Traits, _Alloc>::
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assign(const basic_string& __str, size_type __pos, size_type __n)
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{
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const size_type __strsize = __str.size();
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if (__pos > __strsize)
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__throw_out_of_range("basic_string::assign");
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const bool __testn = __n < __strsize - __pos;
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const size_type __newsize = __testn ? __n : __strsize - __pos;
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return this->assign(__str._M_data() + __pos, __newsize);
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}
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template<typename _CharT, typename _Traits, typename _Alloc>
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basic_string<_CharT, _Traits, _Alloc>&
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basic_string<_CharT, _Traits, _Alloc>::
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assign(const _CharT* __s, size_type __n)
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{
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if (__n > this->max_size())
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__throw_length_error("basic_string::assign");
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if (_M_rep()->_M_is_shared() || less<const _CharT*>()(__s, _M_data())
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|| less<const _CharT*>()(_M_data() + this->size(), __s))
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return _M_replace_safe(_M_ibegin(), _M_iend(), __s, __s + __n);
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else
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{
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// Work in-place
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const size_type __pos = __s - _M_data();
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if (__pos >= __n)
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traits_type::copy(_M_data(), __s, __n);
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else if (__pos)
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traits_type::move(_M_data(), __s, __n);
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_M_rep()->_M_length = __n;
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_M_data()[__n] = _Rep::_S_terminal; // grr.
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return *this;
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}
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}
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template<typename _CharT, typename _Traits, typename _Alloc>
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basic_string<_CharT, _Traits, _Alloc>&
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basic_string<_CharT, _Traits, _Alloc>::
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insert(size_type __pos1, const basic_string& __str,
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size_type __pos2, size_type __n)
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{
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const size_type __strsize = __str.size();
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if (__pos2 > __strsize)
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__throw_out_of_range("basic_string::insert");
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const bool __testn = __n < __strsize - __pos2;
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const size_type __newsize = __testn ? __n : __strsize - __pos2;
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return this->insert(__pos1, __str._M_data() + __pos2, __newsize);
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}
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template<typename _CharT, typename _Traits, typename _Alloc>
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basic_string<_CharT, _Traits, _Alloc>&
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basic_string<_CharT, _Traits, _Alloc>::
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insert(size_type __pos, const _CharT* __s, size_type __n)
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{
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const size_type __size = this->size();
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if (__pos > __size)
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__throw_out_of_range("basic_string::insert");
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if (__size > this->max_size() - __n)
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__throw_length_error("basic_string::insert");
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if (_M_rep()->_M_is_shared() || less<const _CharT*>()(__s, _M_data())
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|| less<const _CharT*>()(_M_data() + __size, __s))
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return _M_replace_safe(_M_ibegin() + __pos, _M_ibegin() + __pos,
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__s, __s + __n);
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else
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{
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// Work in-place. If _M_mutate reallocates the string, __s
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// does not point anymore to valid data, therefore we save its
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// offset, then we restore it.
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const size_type __off = __s - _M_data();
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_M_mutate(__pos, 0, __n);
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__s = _M_data() + __off;
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_CharT* __p = _M_data() + __pos;
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if (__s + __n <= __p)
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traits_type::copy(__p, __s, __n);
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else if (__s >= __p)
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traits_type::copy(__p, __s + __n, __n);
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else
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{
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traits_type::copy(__p, __s, __p - __s);
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traits_type::copy(__p + (__p-__s), __p + __n, __n - (__p-__s));
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}
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return *this;
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}
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}
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template<typename _CharT, typename _Traits, typename _Alloc>
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basic_string<_CharT, _Traits, _Alloc>&
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basic_string<_CharT, _Traits, _Alloc>::
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replace(size_type __pos, size_type __n1, const _CharT* __s,
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size_type __n2)
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{
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const size_type __size = this->size();
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if (__pos > __size)
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__throw_out_of_range("basic_string::replace");
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const bool __testn1 = __n1 < __size - __pos;
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const size_type __foldn1 = __testn1 ? __n1 : __size - __pos;
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if (__size - __foldn1 > this->max_size() - __n2)
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__throw_length_error("basic_string::replace");
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if (_M_rep()->_M_is_shared() || less<const _CharT*>()(__s, _M_data())
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|| less<const _CharT*>()(_M_data() + __size, __s))
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return _M_replace_safe(_M_ibegin() + __pos,
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_M_ibegin() + __pos + __foldn1, __s, __s + __n2);
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// Todo: optimized in-place replace.
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else
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return _M_replace(_M_ibegin() + __pos, _M_ibegin() + __pos + __foldn1,
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__s, __s + __n2,
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typename iterator_traits<const _CharT*>::iterator_category());
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}
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template<typename _CharT, typename _Traits, typename _Alloc>
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void
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basic_string<_CharT, _Traits, _Alloc>::_Rep::
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_M_destroy(const _Alloc& __a) throw ()
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{
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const size_type __size = sizeof(_Rep) + (_M_capacity + 1) * sizeof(_CharT);
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_Raw_bytes_alloc(__a).deallocate(reinterpret_cast<char*>(this), __size);
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}
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template<typename _CharT, typename _Traits, typename _Alloc>
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void
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basic_string<_CharT, _Traits, _Alloc>::_M_leak_hard()
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{
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if (_M_rep()->_M_is_shared())
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_M_mutate(0, 0, 0);
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_M_rep()->_M_set_leaked();
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}
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// _M_mutate and, below, _M_clone, include, in the same form, an exponential
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// growth policy, necessary to meet amortized linear time requirements of
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// the library: see http://gcc.gnu.org/ml/libstdc++/2001-07/msg00085.html.
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// The policy is active for allocations requiring an amount of memory above
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// system pagesize. This is consistent with the requirements of the standard:
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// see, f.i., http://gcc.gnu.org/ml/libstdc++/2001-07/msg00130.html
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template<typename _CharT, typename _Traits, typename _Alloc>
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void
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basic_string<_CharT, _Traits, _Alloc>::
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_M_mutate(size_type __pos, size_type __len1, size_type __len2)
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{
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const size_type __old_size = this->size();
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const size_type __new_size = __old_size + __len2 - __len1;
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const _CharT* __src = _M_data() + __pos + __len1;
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const size_type __how_much = __old_size - __pos - __len1;
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if (_M_rep()->_M_is_shared() || __new_size > capacity())
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{
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// Must reallocate.
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allocator_type __a = get_allocator();
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// See below (_S_create) for the meaning and value of these
|
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// constants.
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const size_type __pagesize = 4096;
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const size_type __malloc_header_size = 4 * sizeof (void*);
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// The biggest string which fits in a memory page
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const size_type __page_capacity = (__pagesize - __malloc_header_size
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- sizeof(_Rep) - sizeof(_CharT))
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/ sizeof(_CharT);
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_Rep* __r;
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if (__new_size > capacity() && __new_size > __page_capacity)
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|
// Growing exponentially.
|
|
__r = _Rep::_S_create(__new_size > 2*capacity() ?
|
|
__new_size : 2*capacity(), __a);
|
|
else
|
|
__r = _Rep::_S_create(__new_size, __a);
|
|
try
|
|
{
|
|
if (__pos)
|
|
traits_type::copy(__r->_M_refdata(), _M_data(), __pos);
|
|
if (__how_much)
|
|
traits_type::copy(__r->_M_refdata() + __pos + __len2,
|
|
__src, __how_much);
|
|
}
|
|
catch(...)
|
|
{
|
|
__r->_M_dispose(get_allocator());
|
|
__throw_exception_again;
|
|
}
|
|
_M_rep()->_M_dispose(__a);
|
|
_M_data(__r->_M_refdata());
|
|
}
|
|
else if (__how_much && __len1 != __len2)
|
|
{
|
|
// Work in-place
|
|
traits_type::move(_M_data() + __pos + __len2, __src, __how_much);
|
|
}
|
|
_M_rep()->_M_set_sharable();
|
|
_M_rep()->_M_length = __new_size;
|
|
_M_data()[__new_size] = _Rep::_S_terminal; // grrr. (per 21.3.4)
|
|
// You cannot leave those LWG people alone for a second.
|
|
}
|
|
|
|
template<typename _CharT, typename _Traits, typename _Alloc>
|
|
void
|
|
basic_string<_CharT, _Traits, _Alloc>::reserve(size_type __res)
|
|
{
|
|
if (__res > this->capacity() || _M_rep()->_M_is_shared())
|
|
{
|
|
if (__res > this->max_size())
|
|
__throw_length_error("basic_string::reserve");
|
|
// Make sure we don't shrink below the current size
|
|
if (__res < this->size())
|
|
__res = this->size();
|
|
allocator_type __a = get_allocator();
|
|
_CharT* __tmp = _M_rep()->_M_clone(__a, __res - this->size());
|
|
_M_rep()->_M_dispose(__a);
|
|
_M_data(__tmp);
|
|
}
|
|
}
|
|
|
|
template<typename _CharT, typename _Traits, typename _Alloc>
|
|
void basic_string<_CharT, _Traits, _Alloc>::swap(basic_string& __s)
|
|
{
|
|
if (_M_rep()->_M_is_leaked())
|
|
_M_rep()->_M_set_sharable();
|
|
if (__s._M_rep()->_M_is_leaked())
|
|
__s._M_rep()->_M_set_sharable();
|
|
if (this->get_allocator() == __s.get_allocator())
|
|
{
|
|
_CharT* __tmp = _M_data();
|
|
_M_data(__s._M_data());
|
|
__s._M_data(__tmp);
|
|
}
|
|
// The code below can usually be optimized away.
|
|
else
|
|
{
|
|
basic_string __tmp1(_M_ibegin(), _M_iend(), __s.get_allocator());
|
|
basic_string __tmp2(__s._M_ibegin(), __s._M_iend(),
|
|
this->get_allocator());
|
|
*this = __tmp2;
|
|
__s = __tmp1;
|
|
}
|
|
}
|
|
|
|
template<typename _CharT, typename _Traits, typename _Alloc>
|
|
typename basic_string<_CharT, _Traits, _Alloc>::_Rep*
|
|
basic_string<_CharT, _Traits, _Alloc>::_Rep::
|
|
_S_create(size_t __capacity, const _Alloc& __alloc)
|
|
{
|
|
typedef basic_string<_CharT, _Traits, _Alloc> __string_type;
|
|
#ifdef _GLIBCPP_RESOLVE_LIB_DEFECTS
|
|
// 83. String::npos vs. string::max_size()
|
|
if (__capacity > _S_max_size)
|
|
#else
|
|
if (__capacity == npos)
|
|
#endif
|
|
__throw_length_error("basic_string::_S_create");
|
|
|
|
// NB: Need an array of char_type[__capacity], plus a
|
|
// terminating null char_type() element, plus enough for the
|
|
// _Rep data structure. Whew. Seemingly so needy, yet so elemental.
|
|
size_t __size = (__capacity + 1) * sizeof(_CharT) + sizeof(_Rep);
|
|
|
|
// The standard places no restriction on allocating more memory
|
|
// than is strictly needed within this layer at the moment or as
|
|
// requested by an explicit application call to reserve(). Many
|
|
// malloc implementations perform quite poorly when an
|
|
// application attempts to allocate memory in a stepwise fashion
|
|
// growing each allocation size by only 1 char. Additionally,
|
|
// it makes little sense to allocate less linear memory than the
|
|
// natural blocking size of the malloc implementation.
|
|
// Unfortunately, we would need a somewhat low-level calculation
|
|
// with tuned parameters to get this perfect for any particular
|
|
// malloc implementation. Fortunately, generalizations about
|
|
// common features seen among implementations seems to suffice.
|
|
|
|
// __pagesize need not match the actual VM page size for good
|
|
// results in practice, thus we pick a common value on the low
|
|
// side. __malloc_header_size is an estimate of the amount of
|
|
// overhead per memory allocation (in practice seen N * sizeof
|
|
// (void*) where N is 0, 2 or 4). According to folklore,
|
|
// picking this value on the high side is better than
|
|
// low-balling it (especially when this algorithm is used with
|
|
// malloc implementations that allocate memory blocks rounded up
|
|
// to a size which is a power of 2).
|
|
const size_t __pagesize = 4096; // must be 2^i * __subpagesize
|
|
const size_t __subpagesize = 128; // should be >> __malloc_header_size
|
|
const size_t __malloc_header_size = 4 * sizeof (void*);
|
|
if ((__size + __malloc_header_size) > __pagesize)
|
|
{
|
|
const size_t __extra =
|
|
(__pagesize - ((__size + __malloc_header_size) % __pagesize))
|
|
% __pagesize;
|
|
__capacity += __extra / sizeof(_CharT);
|
|
__size = (__capacity + 1) * sizeof(_CharT) + sizeof(_Rep);
|
|
}
|
|
else if (__size > __subpagesize)
|
|
{
|
|
const size_t __extra =
|
|
(__subpagesize - ((__size + __malloc_header_size) % __subpagesize))
|
|
% __subpagesize;
|
|
__capacity += __extra / sizeof(_CharT);
|
|
__size = (__capacity + 1) * sizeof(_CharT) + sizeof(_Rep);
|
|
}
|
|
|
|
// NB: Might throw, but no worries about a leak, mate: _Rep()
|
|
// does not throw.
|
|
void* __place = _Raw_bytes_alloc(__alloc).allocate(__size);
|
|
_Rep *__p = new (__place) _Rep;
|
|
__p->_M_capacity = __capacity;
|
|
__p->_M_set_sharable(); // One reference.
|
|
__p->_M_length = 0;
|
|
return __p;
|
|
}
|
|
|
|
template<typename _CharT, typename _Traits, typename _Alloc>
|
|
_CharT*
|
|
basic_string<_CharT, _Traits, _Alloc>::_Rep::
|
|
_M_clone(const _Alloc& __alloc, size_type __res)
|
|
{
|
|
// Requested capacity of the clone.
|
|
const size_type __requested_cap = _M_length + __res;
|
|
// See above (_S_create) for the meaning and value of these constants.
|
|
const size_type __pagesize = 4096;
|
|
const size_type __malloc_header_size = 4 * sizeof (void*);
|
|
// The biggest string which fits in a memory page.
|
|
const size_type __page_capacity =
|
|
(__pagesize - __malloc_header_size - sizeof(_Rep) - sizeof(_CharT))
|
|
/ sizeof(_CharT);
|
|
_Rep* __r;
|
|
if (__requested_cap > _M_capacity && __requested_cap > __page_capacity)
|
|
// Growing exponentially.
|
|
__r = _Rep::_S_create(__requested_cap > 2*_M_capacity ?
|
|
__requested_cap : 2*_M_capacity, __alloc);
|
|
else
|
|
__r = _Rep::_S_create(__requested_cap, __alloc);
|
|
|
|
if (_M_length)
|
|
{
|
|
try
|
|
{ traits_type::copy(__r->_M_refdata(), _M_refdata(), _M_length); }
|
|
catch(...)
|
|
{
|
|
__r->_M_destroy(__alloc);
|
|
__throw_exception_again;
|
|
}
|
|
}
|
|
__r->_M_length = _M_length;
|
|
return __r->_M_refdata();
|
|
}
|
|
|
|
template<typename _CharT, typename _Traits, typename _Alloc>
|
|
void
|
|
basic_string<_CharT, _Traits, _Alloc>::resize(size_type __n, _CharT __c)
|
|
{
|
|
if (__n > max_size())
|
|
__throw_length_error("basic_string::resize");
|
|
const size_type __size = this->size();
|
|
if (__size < __n)
|
|
this->append(__n - __size, __c);
|
|
else if (__n < __size)
|
|
this->erase(__n);
|
|
// else nothing (in particular, avoid calling _M_mutate() unnecessarily.)
|
|
}
|
|
|
|
// This is the general replace helper, which currently gets instantiated both
|
|
// for input iterators and reverse iterators. It buffers internally and then
|
|
// calls _M_replace_safe.
|
|
template<typename _CharT, typename _Traits, typename _Alloc>
|
|
template<typename _InputIter>
|
|
basic_string<_CharT, _Traits, _Alloc>&
|
|
basic_string<_CharT, _Traits, _Alloc>::
|
|
_M_replace(iterator __i1, iterator __i2, _InputIter __k1,
|
|
_InputIter __k2, input_iterator_tag)
|
|
{
|
|
// Save concerned source string data in a temporary.
|
|
const basic_string __s(__k1, __k2);
|
|
return _M_replace_safe(__i1, __i2, __s._M_ibegin(), __s._M_iend());
|
|
}
|
|
|
|
// This is a special replace helper, which does not buffer internally
|
|
// and can be used in "safe" situations involving forward iterators,
|
|
// i.e., when source and destination ranges are known to not overlap.
|
|
template<typename _CharT, typename _Traits, typename _Alloc>
|
|
template<typename _ForwardIter>
|
|
basic_string<_CharT, _Traits, _Alloc>&
|
|
basic_string<_CharT, _Traits, _Alloc>::
|
|
_M_replace_safe(iterator __i1, iterator __i2, _ForwardIter __k1,
|
|
_ForwardIter __k2)
|
|
{
|
|
const size_type __dnew = static_cast<size_type>(std::distance(__k1, __k2));
|
|
const size_type __dold = __i2 - __i1;
|
|
const size_type __dmax = this->max_size();
|
|
|
|
if (__dmax <= __dnew)
|
|
__throw_length_error("basic_string::_M_replace");
|
|
const size_type __off = __i1 - _M_ibegin();
|
|
_M_mutate(__off, __dold, __dnew);
|
|
|
|
// Invalidated __i1, __i2
|
|
if (__dnew)
|
|
_S_copy_chars(_M_data() + __off, __k1, __k2);
|
|
|
|
return *this;
|
|
}
|
|
|
|
template<typename _CharT, typename _Traits, typename _Alloc>
|
|
basic_string<_CharT, _Traits, _Alloc>&
|
|
basic_string<_CharT, _Traits, _Alloc>::
|
|
replace(size_type __pos1, size_type __n1, const basic_string& __str,
|
|
size_type __pos2, size_type __n2)
|
|
{
|
|
const size_type __strsize = __str.size();
|
|
if (__pos2 > __strsize)
|
|
__throw_out_of_range("basic_string::replace");
|
|
const bool __testn2 = __n2 < __strsize - __pos2;
|
|
const size_type __foldn2 = __testn2 ? __n2 : __strsize - __pos2;
|
|
return this->replace(__pos1, __n1,
|
|
__str._M_data() + __pos2, __foldn2);
|
|
}
|
|
|
|
template<typename _CharT, typename _Traits, typename _Alloc>
|
|
basic_string<_CharT, _Traits, _Alloc>&
|
|
basic_string<_CharT, _Traits, _Alloc>::
|
|
append(const basic_string& __str)
|
|
{
|
|
// Iff appending itself, string needs to pre-reserve the
|
|
// correct size so that _M_mutate does not clobber the
|
|
// iterators formed here.
|
|
const size_type __size = __str.size();
|
|
const size_type __len = __size + this->size();
|
|
if (__len > this->capacity())
|
|
this->reserve(__len);
|
|
return _M_replace_safe(_M_iend(), _M_iend(), __str._M_ibegin(),
|
|
__str._M_iend());
|
|
}
|
|
|
|
template<typename _CharT, typename _Traits, typename _Alloc>
|
|
basic_string<_CharT, _Traits, _Alloc>&
|
|
basic_string<_CharT, _Traits, _Alloc>::
|
|
append(const basic_string& __str, size_type __pos, size_type __n)
|
|
{
|
|
// Iff appending itself, string needs to pre-reserve the
|
|
// correct size so that _M_mutate does not clobber the
|
|
// iterators formed here.
|
|
const size_type __len = std::min(size_type(__str.size() - __pos),
|
|
__n) + this->size();
|
|
if (__len > this->capacity())
|
|
this->reserve(__len);
|
|
return _M_replace_safe(_M_iend(), _M_iend(), __str._M_check(__pos),
|
|
__str._M_fold(__pos, __n));
|
|
}
|
|
|
|
template<typename _CharT, typename _Traits, typename _Alloc>
|
|
basic_string<_CharT, _Traits, _Alloc>&
|
|
basic_string<_CharT, _Traits, _Alloc>::
|
|
append(const _CharT* __s, size_type __n)
|
|
{
|
|
const size_type __len = __n + this->size();
|
|
if (__len > this->capacity())
|
|
this->reserve(__len);
|
|
return _M_replace_safe(_M_iend(), _M_iend(), __s, __s + __n);
|
|
}
|
|
|
|
template<typename _CharT, typename _Traits, typename _Alloc>
|
|
basic_string<_CharT, _Traits, _Alloc>&
|
|
basic_string<_CharT, _Traits, _Alloc>::
|
|
append(size_type __n, _CharT __c)
|
|
{
|
|
const size_type __len = __n + this->size();
|
|
if (__len > this->capacity())
|
|
this->reserve(__len);
|
|
return this->replace(_M_iend(), _M_iend(), __n, __c);
|
|
}
|
|
|
|
template<typename _CharT, typename _Traits, typename _Alloc>
|
|
basic_string<_CharT, _Traits, _Alloc>
|
|
operator+(const _CharT* __lhs,
|
|
const basic_string<_CharT, _Traits, _Alloc>& __rhs)
|
|
{
|
|
typedef basic_string<_CharT, _Traits, _Alloc> __string_type;
|
|
typedef typename __string_type::size_type __size_type;
|
|
const __size_type __len = _Traits::length(__lhs);
|
|
__string_type __str;
|
|
__str.reserve(__len + __rhs.size());
|
|
__str.append(__lhs, __lhs + __len);
|
|
__str.append(__rhs);
|
|
return __str;
|
|
}
|
|
|
|
template<typename _CharT, typename _Traits, typename _Alloc>
|
|
basic_string<_CharT, _Traits, _Alloc>
|
|
operator+(_CharT __lhs, const basic_string<_CharT, _Traits, _Alloc>& __rhs)
|
|
{
|
|
typedef basic_string<_CharT, _Traits, _Alloc> __string_type;
|
|
typedef typename __string_type::size_type __size_type;
|
|
__string_type __str;
|
|
const __size_type __len = __rhs.size();
|
|
__str.reserve(__len + 1);
|
|
__str.append(__size_type(1), __lhs);
|
|
__str.append(__rhs);
|
|
return __str;
|
|
}
|
|
|
|
template<typename _CharT, typename _Traits, typename _Alloc>
|
|
basic_string<_CharT, _Traits, _Alloc>&
|
|
basic_string<_CharT, _Traits, _Alloc>::
|
|
replace(iterator __i1, iterator __i2, size_type __n2, _CharT __c)
|
|
{
|
|
const size_type __n1 = __i2 - __i1;
|
|
const size_type __off1 = __i1 - _M_ibegin();
|
|
if (max_size() - (this->size() - __n1) <= __n2)
|
|
__throw_length_error("basic_string::replace");
|
|
_M_mutate (__off1, __n1, __n2);
|
|
// Invalidated __i1, __i2
|
|
if (__n2)
|
|
traits_type::assign(_M_data() + __off1, __n2, __c);
|
|
return *this;
|
|
}
|
|
|
|
template<typename _CharT, typename _Traits, typename _Alloc>
|
|
typename basic_string<_CharT, _Traits, _Alloc>::size_type
|
|
basic_string<_CharT, _Traits, _Alloc>::
|
|
copy(_CharT* __s, size_type __n, size_type __pos) const
|
|
{
|
|
if (__pos > this->size())
|
|
__throw_out_of_range("basic_string::copy");
|
|
|
|
if (__n > this->size() - __pos)
|
|
__n = this->size() - __pos;
|
|
|
|
traits_type::copy(__s, _M_data() + __pos, __n);
|
|
// 21.3.5.7 par 3: do not append null. (good.)
|
|
return __n;
|
|
}
|
|
|
|
template<typename _CharT, typename _Traits, typename _Alloc>
|
|
typename basic_string<_CharT, _Traits, _Alloc>::size_type
|
|
basic_string<_CharT, _Traits, _Alloc>::
|
|
find(const _CharT* __s, size_type __pos, size_type __n) const
|
|
{
|
|
const size_type __size = this->size();
|
|
size_t __xpos = __pos;
|
|
const _CharT* __data = _M_data();
|
|
for (; __xpos + __n <= __size; ++__xpos)
|
|
if (traits_type::compare(__data + __xpos, __s, __n) == 0)
|
|
return __xpos;
|
|
return npos;
|
|
}
|
|
|
|
template<typename _CharT, typename _Traits, typename _Alloc>
|
|
typename basic_string<_CharT, _Traits, _Alloc>::size_type
|
|
basic_string<_CharT, _Traits, _Alloc>::
|
|
find(_CharT __c, size_type __pos) const
|
|
{
|
|
const size_type __size = this->size();
|
|
size_type __ret = npos;
|
|
if (__pos < __size)
|
|
{
|
|
const _CharT* __data = _M_data();
|
|
const size_type __n = __size - __pos;
|
|
const _CharT* __p = traits_type::find(__data + __pos, __n, __c);
|
|
if (__p)
|
|
__ret = __p - __data;
|
|
}
|
|
return __ret;
|
|
}
|
|
|
|
|
|
template<typename _CharT, typename _Traits, typename _Alloc>
|
|
typename basic_string<_CharT, _Traits, _Alloc>::size_type
|
|
basic_string<_CharT, _Traits, _Alloc>::
|
|
rfind(const _CharT* __s, size_type __pos, size_type __n) const
|
|
{
|
|
const size_type __size = this->size();
|
|
if (__n <= __size)
|
|
{
|
|
__pos = std::min(size_type(__size - __n), __pos);
|
|
const _CharT* __data = _M_data();
|
|
do
|
|
{
|
|
if (traits_type::compare(__data + __pos, __s, __n) == 0)
|
|
return __pos;
|
|
}
|
|
while (__pos-- > 0);
|
|
}
|
|
return npos;
|
|
}
|
|
|
|
template<typename _CharT, typename _Traits, typename _Alloc>
|
|
typename basic_string<_CharT, _Traits, _Alloc>::size_type
|
|
basic_string<_CharT, _Traits, _Alloc>::
|
|
rfind(_CharT __c, size_type __pos) const
|
|
{
|
|
const size_type __size = this->size();
|
|
if (__size)
|
|
{
|
|
size_t __xpos = __size - 1;
|
|
if (__xpos > __pos)
|
|
__xpos = __pos;
|
|
|
|
for (++__xpos; __xpos-- > 0; )
|
|
if (traits_type::eq(_M_data()[__xpos], __c))
|
|
return __xpos;
|
|
}
|
|
return npos;
|
|
}
|
|
|
|
template<typename _CharT, typename _Traits, typename _Alloc>
|
|
typename basic_string<_CharT, _Traits, _Alloc>::size_type
|
|
basic_string<_CharT, _Traits, _Alloc>::
|
|
find_first_of(const _CharT* __s, size_type __pos, size_type __n) const
|
|
{
|
|
for (; __n && __pos < this->size(); ++__pos)
|
|
{
|
|
const _CharT* __p = traits_type::find(__s, __n, _M_data()[__pos]);
|
|
if (__p)
|
|
return __pos;
|
|
}
|
|
return npos;
|
|
}
|
|
|
|
template<typename _CharT, typename _Traits, typename _Alloc>
|
|
typename basic_string<_CharT, _Traits, _Alloc>::size_type
|
|
basic_string<_CharT, _Traits, _Alloc>::
|
|
find_last_of(const _CharT* __s, size_type __pos, size_type __n) const
|
|
{
|
|
size_type __size = this->size();
|
|
if (__size && __n)
|
|
{
|
|
if (--__size > __pos)
|
|
__size = __pos;
|
|
do
|
|
{
|
|
if (traits_type::find(__s, __n, _M_data()[__size]))
|
|
return __size;
|
|
}
|
|
while (__size-- != 0);
|
|
}
|
|
return npos;
|
|
}
|
|
|
|
template<typename _CharT, typename _Traits, typename _Alloc>
|
|
typename basic_string<_CharT, _Traits, _Alloc>::size_type
|
|
basic_string<_CharT, _Traits, _Alloc>::
|
|
find_first_not_of(const _CharT* __s, size_type __pos, size_type __n) const
|
|
{
|
|
size_t __xpos = __pos;
|
|
for (; __xpos < this->size(); ++__xpos)
|
|
if (!traits_type::find(__s, __n, _M_data()[__xpos]))
|
|
return __xpos;
|
|
return npos;
|
|
}
|
|
|
|
template<typename _CharT, typename _Traits, typename _Alloc>
|
|
typename basic_string<_CharT, _Traits, _Alloc>::size_type
|
|
basic_string<_CharT, _Traits, _Alloc>::
|
|
find_first_not_of(_CharT __c, size_type __pos) const
|
|
{
|
|
size_t __xpos = __pos;
|
|
for (; __xpos < this->size(); ++__xpos)
|
|
if (!traits_type::eq(_M_data()[__xpos], __c))
|
|
return __xpos;
|
|
return npos;
|
|
}
|
|
|
|
template<typename _CharT, typename _Traits, typename _Alloc>
|
|
typename basic_string<_CharT, _Traits, _Alloc>::size_type
|
|
basic_string<_CharT, _Traits, _Alloc>::
|
|
find_last_not_of(const _CharT* __s, size_type __pos, size_type __n) const
|
|
{
|
|
size_type __size = this->size();
|
|
if (__size)
|
|
{
|
|
if (--__size > __pos)
|
|
__size = __pos;
|
|
do
|
|
{
|
|
if (!traits_type::find(__s, __n, _M_data()[__size]))
|
|
return __size;
|
|
}
|
|
while (__size--);
|
|
}
|
|
return npos;
|
|
}
|
|
|
|
template<typename _CharT, typename _Traits, typename _Alloc>
|
|
typename basic_string<_CharT, _Traits, _Alloc>::size_type
|
|
basic_string<_CharT, _Traits, _Alloc>::
|
|
find_last_not_of(_CharT __c, size_type __pos) const
|
|
{
|
|
size_type __size = this->size();
|
|
if (__size)
|
|
{
|
|
if (--__size > __pos)
|
|
__size = __pos;
|
|
do
|
|
{
|
|
if (!traits_type::eq(_M_data()[__size], __c))
|
|
return __size;
|
|
}
|
|
while (__size--);
|
|
}
|
|
return npos;
|
|
}
|
|
|
|
template<typename _CharT, typename _Traits, typename _Alloc>
|
|
int
|
|
basic_string<_CharT, _Traits, _Alloc>::
|
|
compare(size_type __pos, size_type __n, const basic_string& __str) const
|
|
{
|
|
const size_type __size = this->size();
|
|
const size_type __osize = __str.size();
|
|
if (__pos > __size)
|
|
__throw_out_of_range("basic_string::compare");
|
|
|
|
const size_type __rsize= std::min(size_type(__size - __pos), __n);
|
|
const size_type __len = std::min(__rsize, __osize);
|
|
int __r = traits_type::compare(_M_data() + __pos, __str.data(), __len);
|
|
if (!__r)
|
|
__r = __rsize - __osize;
|
|
return __r;
|
|
}
|
|
|
|
template<typename _CharT, typename _Traits, typename _Alloc>
|
|
int
|
|
basic_string<_CharT, _Traits, _Alloc>::
|
|
compare(size_type __pos1, size_type __n1, const basic_string& __str,
|
|
size_type __pos2, size_type __n2) const
|
|
{
|
|
const size_type __size = this->size();
|
|
const size_type __osize = __str.size();
|
|
if (__pos1 > __size || __pos2 > __osize)
|
|
__throw_out_of_range("basic_string::compare");
|
|
|
|
const size_type __rsize = std::min(size_type(__size - __pos1), __n1);
|
|
const size_type __rosize = std::min(size_type(__osize - __pos2), __n2);
|
|
const size_type __len = std::min(__rsize, __rosize);
|
|
int __r = traits_type::compare(_M_data() + __pos1,
|
|
__str.data() + __pos2, __len);
|
|
if (!__r)
|
|
__r = __rsize - __rosize;
|
|
return __r;
|
|
}
|
|
|
|
|
|
template<typename _CharT, typename _Traits, typename _Alloc>
|
|
int
|
|
basic_string<_CharT, _Traits, _Alloc>::
|
|
compare(const _CharT* __s) const
|
|
{
|
|
const size_type __size = this->size();
|
|
const size_type __osize = traits_type::length(__s);
|
|
const size_type __len = std::min(__size, __osize);
|
|
int __r = traits_type::compare(_M_data(), __s, __len);
|
|
if (!__r)
|
|
__r = __size - __osize;
|
|
return __r;
|
|
}
|
|
|
|
|
|
template<typename _CharT, typename _Traits, typename _Alloc>
|
|
int
|
|
basic_string <_CharT, _Traits, _Alloc>::
|
|
compare(size_type __pos, size_type __n1, const _CharT* __s) const
|
|
{
|
|
const size_type __size = this->size();
|
|
if (__pos > __size)
|
|
__throw_out_of_range("basic_string::compare");
|
|
|
|
const size_type __osize = traits_type::length(__s);
|
|
const size_type __rsize = std::min(size_type(__size - __pos), __n1);
|
|
const size_type __len = std::min(__rsize, __osize);
|
|
int __r = traits_type::compare(_M_data() + __pos, __s, __len);
|
|
if (!__r)
|
|
__r = __rsize - __osize;
|
|
return __r;
|
|
}
|
|
|
|
template<typename _CharT, typename _Traits, typename _Alloc>
|
|
int
|
|
basic_string <_CharT, _Traits, _Alloc>::
|
|
compare(size_type __pos, size_type __n1, const _CharT* __s,
|
|
size_type __n2) const
|
|
{
|
|
const size_type __size = this->size();
|
|
if (__pos > __size)
|
|
__throw_out_of_range("basic_string::compare");
|
|
|
|
const size_type __osize = std::min(traits_type::length(__s), __n2);
|
|
const size_type __rsize = std::min(size_type(__size - __pos), __n1);
|
|
const size_type __len = std::min(__rsize, __osize);
|
|
int __r = traits_type::compare(_M_data() + __pos, __s, __len);
|
|
if (!__r)
|
|
__r = __rsize - __osize;
|
|
return __r;
|
|
}
|
|
|
|
// Inhibit implicit instantiations for required instantiations,
|
|
// which are defined via explicit instantiations elsewhere.
|
|
// NB: This syntax is a GNU extension.
|
|
#if _GLIBCPP_EXTERN_TEMPLATE
|
|
extern template class basic_string<char>;
|
|
extern template
|
|
basic_istream<char>&
|
|
operator>>(basic_istream<char>&, string&);
|
|
extern template
|
|
basic_ostream<char>&
|
|
operator<<(basic_ostream<char>&, const string&);
|
|
extern template
|
|
basic_istream<char>&
|
|
getline(basic_istream<char>&, string&, char);
|
|
extern template
|
|
basic_istream<char>&
|
|
getline(basic_istream<char>&, string&);
|
|
|
|
#ifdef _GLIBCPP_USE_WCHAR_T
|
|
extern template class basic_string<wchar_t>;
|
|
extern template
|
|
basic_istream<wchar_t>&
|
|
operator>>(basic_istream<wchar_t>&, wstring&);
|
|
extern template
|
|
basic_ostream<wchar_t>&
|
|
operator<<(basic_ostream<wchar_t>&, const wstring&);
|
|
extern template
|
|
basic_istream<wchar_t>&
|
|
getline(basic_istream<wchar_t>&, wstring&, wchar_t);
|
|
extern template
|
|
basic_istream<wchar_t>&
|
|
getline(basic_istream<wchar_t>&, wstring&);
|
|
#endif
|
|
#endif
|
|
} // namespace std
|
|
|
|
#endif
|