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jlechner |
// Components for manipulating sequences of characters -*- C++ -*-
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// Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005
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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, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
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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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/** @file basic_string.tcc
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* This is an internal header file, included by other library headers.
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* You should not attempt to use it directly.
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*/
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//
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// ISO C++ 14882: 21 Strings library
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//
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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 _BASIC_STRING_TCC
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#define _BASIC_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
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inline bool
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__is_null_pointer(_Type* __ptr)
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{ return __ptr == 0; }
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template
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inline bool
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__is_null_pointer(_Type)
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{ return false; }
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template
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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_base))/sizeof(_CharT)) - 1) / 4;
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template
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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
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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
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typename basic_string<_CharT, _Traits, _Alloc>::size_type
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basic_string<_CharT, _Traits, _Alloc>::_Rep::_S_empty_rep_storage[
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(sizeof(_Rep_base) + sizeof(_CharT) + sizeof(size_type) - 1) /
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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
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template
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_CharT*
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basic_string<_CharT, _Traits, _Alloc>::
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_S_construct(_InIterator __beg, _InIterator __end, const _Alloc& __a,
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input_iterator_tag)
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{
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#ifndef _GLIBCXX_FULLY_DYNAMIC_STRING
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if (__beg == __end && __a == _Alloc())
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return _S_empty_rep()._M_refdata();
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#endif
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// Avoid reallocation for common case.
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_CharT __buf[128];
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size_type __len = 0;
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while (__beg != __end && __len < sizeof(__buf) / sizeof(_CharT))
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{
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__buf[__len++] = *__beg;
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++__beg;
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}
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_Rep* __r = _Rep::_S_create(__len, size_type(0), __a);
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_M_copy(__r->_M_refdata(), __buf, __len);
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try
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{
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while (__beg != __end)
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{
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if (__len == __r->_M_capacity)
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{
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// Allocate more space.
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_Rep* __another = _Rep::_S_create(__len + 1, __len, __a);
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_M_copy(__another->_M_refdata(), __r->_M_refdata(), __len);
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__r->_M_destroy(__a);
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__r = __another;
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}
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__r->_M_refdata()[__len++] = *__beg;
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++__beg;
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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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__r->_M_set_length_and_sharable(__len);
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return __r->_M_refdata();
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}
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template
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template
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_CharT*
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basic_string<_CharT, _Traits, _Alloc>::
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_S_construct(_InIterator __beg, _InIterator __end, const _Alloc& __a,
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forward_iterator_tag)
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{
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#ifndef _GLIBCXX_FULLY_DYNAMIC_STRING
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if (__beg == __end && __a == _Alloc())
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return _S_empty_rep()._M_refdata();
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#endif
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// NB: Not required, but considered best practice.
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if (__builtin_expect(__is_null_pointer(__beg) && __beg != __end, 0))
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__throw_logic_error(__N("basic_string::_S_construct NULL not valid"));
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const size_type __dnew = static_cast(std::distance(__beg,
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__end));
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// Check for out_of_range and length_error exceptions.
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_Rep* __r = _Rep::_S_create(__dnew, size_type(0), __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_set_length_and_sharable(__dnew);
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return __r->_M_refdata();
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}
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template
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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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#ifndef _GLIBCXX_FULLY_DYNAMIC_STRING
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if (__n == 0 && __a == _Alloc())
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return _S_empty_rep()._M_refdata();
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#endif
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// Check for out_of_range and length_error exceptions.
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_Rep* __r = _Rep::_S_create(__n, size_type(0), __a);
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if (__n)
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_M_assign(__r->_M_refdata(), __n, __c);
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__r->_M_set_length_and_sharable(__n);
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return __r->_M_refdata();
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}
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template
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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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__str.get_allocator())
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{ }
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template
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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
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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_data()
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+ __str._M_check(__pos,
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"basic_string::basic_string"),
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__str._M_data() + __str._M_limit(__pos, __n)
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+ __pos, _Alloc()), _Alloc())
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{ }
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template
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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_data()
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+ __str._M_check(__pos,
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"basic_string::basic_string"),
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__str._M_data() + __str._M_limit(__pos, __n)
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+ __pos, __a), __a)
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{ }
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// TBD: DPG annotate
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template
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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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// TBD: DPG annotate
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template
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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
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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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// TBD: DPG annotate
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template
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template
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basic_string<_CharT, _Traits, _Alloc>::
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basic_string(_InputIterator __beg, _InputIterator __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
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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)
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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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const 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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260 |
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template
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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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__glibcxx_requires_string_len(__s, __n);
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_M_check_length(this->size(), __n, "basic_string::assign");
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if (_M_disjunct(__s) || _M_rep()->_M_is_shared())
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return _M_replace_safe(size_type(0), this->size(), __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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_M_copy(_M_data(), __s, __n);
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else if (__pos)
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_M_move(_M_data(), __s, __n);
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_M_rep()->_M_set_length_and_sharable(__n);
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278 |
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return *this;
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279 |
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}
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280 |
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}
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281 |
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282 |
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template
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basic_string<_CharT, _Traits, _Alloc>&
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basic_string<_CharT, _Traits, _Alloc>::
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285 |
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append(size_type __n, _CharT __c)
|
286 |
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{
|
287 |
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if (__n)
|
288 |
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{
|
289 |
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_M_check_length(size_type(0), __n, "basic_string::append");
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290 |
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const size_type __len = __n + this->size();
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291 |
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if (__len > this->capacity() || _M_rep()->_M_is_shared())
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this->reserve(__len);
|
293 |
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_M_assign(_M_data() + this->size(), __n, __c);
|
294 |
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_M_rep()->_M_set_length_and_sharable(__len);
|
295 |
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}
|
296 |
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return *this;
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297 |
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}
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298 |
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299 |
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template
|
300 |
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basic_string<_CharT, _Traits, _Alloc>&
|
301 |
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basic_string<_CharT, _Traits, _Alloc>::
|
302 |
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append(const _CharT* __s, size_type __n)
|
303 |
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{
|
304 |
|
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__glibcxx_requires_string_len(__s, __n);
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305 |
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if (__n)
|
306 |
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{
|
307 |
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_M_check_length(size_type(0), __n, "basic_string::append");
|
308 |
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const size_type __len = __n + this->size();
|
309 |
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if (__len > this->capacity() || _M_rep()->_M_is_shared())
|
310 |
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{
|
311 |
|
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if (_M_disjunct(__s))
|
312 |
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this->reserve(__len);
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313 |
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else
|
314 |
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{
|
315 |
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const size_type __off = __s - _M_data();
|
316 |
|
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this->reserve(__len);
|
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|
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__s = _M_data() + __off;
|
318 |
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}
|
319 |
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}
|
320 |
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_M_copy(_M_data() + this->size(), __s, __n);
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321 |
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_M_rep()->_M_set_length_and_sharable(__len);
|
322 |
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}
|
323 |
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return *this;
|
324 |
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}
|
325 |
|
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|
326 |
|
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template
|
327 |
|
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basic_string<_CharT, _Traits, _Alloc>&
|
328 |
|
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basic_string<_CharT, _Traits, _Alloc>::
|
329 |
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append(const basic_string& __str)
|
330 |
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{
|
331 |
|
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const size_type __size = __str.size();
|
332 |
|
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if (__size)
|
333 |
|
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{
|
334 |
|
|
const size_type __len = __size + this->size();
|
335 |
|
|
if (__len > this->capacity() || _M_rep()->_M_is_shared())
|
336 |
|
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this->reserve(__len);
|
337 |
|
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_M_copy(_M_data() + this->size(), __str._M_data(), __size);
|
338 |
|
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_M_rep()->_M_set_length_and_sharable(__len);
|
339 |
|
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}
|
340 |
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return *this;
|
341 |
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}
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342 |
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|
343 |
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|
template
|
344 |
|
|
basic_string<_CharT, _Traits, _Alloc>&
|
345 |
|
|
basic_string<_CharT, _Traits, _Alloc>::
|
346 |
|
|
append(const basic_string& __str, size_type __pos, size_type __n)
|
347 |
|
|
{
|
348 |
|
|
__str._M_check(__pos, "basic_string::append");
|
349 |
|
|
__n = __str._M_limit(__pos, __n);
|
350 |
|
|
if (__n)
|
351 |
|
|
{
|
352 |
|
|
const size_type __len = __n + this->size();
|
353 |
|
|
if (__len > this->capacity() || _M_rep()->_M_is_shared())
|
354 |
|
|
this->reserve(__len);
|
355 |
|
|
_M_copy(_M_data() + this->size(), __str._M_data() + __pos, __n);
|
356 |
|
|
_M_rep()->_M_set_length_and_sharable(__len);
|
357 |
|
|
}
|
358 |
|
|
return *this;
|
359 |
|
|
}
|
360 |
|
|
|
361 |
|
|
template
|
362 |
|
|
basic_string<_CharT, _Traits, _Alloc>&
|
363 |
|
|
basic_string<_CharT, _Traits, _Alloc>::
|
364 |
|
|
insert(size_type __pos, const _CharT* __s, size_type __n)
|
365 |
|
|
{
|
366 |
|
|
__glibcxx_requires_string_len(__s, __n);
|
367 |
|
|
_M_check(__pos, "basic_string::insert");
|
368 |
|
|
_M_check_length(size_type(0), __n, "basic_string::insert");
|
369 |
|
|
if (_M_disjunct(__s) || _M_rep()->_M_is_shared())
|
370 |
|
|
return _M_replace_safe(__pos, size_type(0), __s, __n);
|
371 |
|
|
else
|
372 |
|
|
{
|
373 |
|
|
// Work in-place.
|
374 |
|
|
const size_type __off = __s - _M_data();
|
375 |
|
|
_M_mutate(__pos, 0, __n);
|
376 |
|
|
__s = _M_data() + __off;
|
377 |
|
|
_CharT* __p = _M_data() + __pos;
|
378 |
|
|
if (__s + __n <= __p)
|
379 |
|
|
_M_copy(__p, __s, __n);
|
380 |
|
|
else if (__s >= __p)
|
381 |
|
|
_M_copy(__p, __s + __n, __n);
|
382 |
|
|
else
|
383 |
|
|
{
|
384 |
|
|
const size_type __nleft = __p - __s;
|
385 |
|
|
_M_copy(__p, __s, __nleft);
|
386 |
|
|
_M_copy(__p + __nleft, __p + __n, __n - __nleft);
|
387 |
|
|
}
|
388 |
|
|
return *this;
|
389 |
|
|
}
|
390 |
|
|
}
|
391 |
|
|
|
392 |
|
|
template
|
393 |
|
|
basic_string<_CharT, _Traits, _Alloc>&
|
394 |
|
|
basic_string<_CharT, _Traits, _Alloc>::
|
395 |
|
|
replace(size_type __pos, size_type __n1, const _CharT* __s,
|
396 |
|
|
size_type __n2)
|
397 |
|
|
{
|
398 |
|
|
__glibcxx_requires_string_len(__s, __n2);
|
399 |
|
|
_M_check(__pos, "basic_string::replace");
|
400 |
|
|
__n1 = _M_limit(__pos, __n1);
|
401 |
|
|
_M_check_length(__n1, __n2, "basic_string::replace");
|
402 |
|
|
bool __left;
|
403 |
|
|
if (_M_disjunct(__s) || _M_rep()->_M_is_shared())
|
404 |
|
|
return _M_replace_safe(__pos, __n1, __s, __n2);
|
405 |
|
|
else if ((__left = __s + __n2 <= _M_data() + __pos)
|
406 |
|
|
|| _M_data() + __pos + __n1 <= __s)
|
407 |
|
|
{
|
408 |
|
|
// Work in-place: non-overlapping case.
|
409 |
|
|
size_type __off = __s - _M_data();
|
410 |
|
|
__left ? __off : (__off += __n2 - __n1);
|
411 |
|
|
_M_mutate(__pos, __n1, __n2);
|
412 |
|
|
_M_copy(_M_data() + __pos, _M_data() + __off, __n2);
|
413 |
|
|
return *this;
|
414 |
|
|
}
|
415 |
|
|
else
|
416 |
|
|
{
|
417 |
|
|
// Todo: overlapping case.
|
418 |
|
|
const basic_string __tmp(__s, __n2);
|
419 |
|
|
return _M_replace_safe(__pos, __n1, __tmp._M_data(), __n2);
|
420 |
|
|
}
|
421 |
|
|
}
|
422 |
|
|
|
423 |
|
|
template
|
424 |
|
|
void
|
425 |
|
|
basic_string<_CharT, _Traits, _Alloc>::_Rep::
|
426 |
|
|
_M_destroy(const _Alloc& __a) throw ()
|
427 |
|
|
{
|
428 |
|
|
const size_type __size = sizeof(_Rep_base) +
|
429 |
|
|
(this->_M_capacity + 1) * sizeof(_CharT);
|
430 |
|
|
_Raw_bytes_alloc(__a).deallocate(reinterpret_cast(this), __size);
|
431 |
|
|
}
|
432 |
|
|
|
433 |
|
|
template
|
434 |
|
|
void
|
435 |
|
|
basic_string<_CharT, _Traits, _Alloc>::
|
436 |
|
|
_M_leak_hard()
|
437 |
|
|
{
|
438 |
|
|
#ifndef _GLIBCXX_FULLY_DYNAMIC_STRING
|
439 |
|
|
if (_M_rep() == &_S_empty_rep())
|
440 |
|
|
return;
|
441 |
|
|
#endif
|
442 |
|
|
if (_M_rep()->_M_is_shared())
|
443 |
|
|
_M_mutate(0, 0, 0);
|
444 |
|
|
_M_rep()->_M_set_leaked();
|
445 |
|
|
}
|
446 |
|
|
|
447 |
|
|
template
|
448 |
|
|
void
|
449 |
|
|
basic_string<_CharT, _Traits, _Alloc>::
|
450 |
|
|
_M_mutate(size_type __pos, size_type __len1, size_type __len2)
|
451 |
|
|
{
|
452 |
|
|
const size_type __old_size = this->size();
|
453 |
|
|
const size_type __new_size = __old_size + __len2 - __len1;
|
454 |
|
|
const size_type __how_much = __old_size - __pos - __len1;
|
455 |
|
|
|
456 |
|
|
if (__new_size > this->capacity() || _M_rep()->_M_is_shared())
|
457 |
|
|
{
|
458 |
|
|
// Must reallocate.
|
459 |
|
|
const allocator_type __a = get_allocator();
|
460 |
|
|
_Rep* __r = _Rep::_S_create(__new_size, this->capacity(), __a);
|
461 |
|
|
|
462 |
|
|
if (__pos)
|
463 |
|
|
_M_copy(__r->_M_refdata(), _M_data(), __pos);
|
464 |
|
|
if (__how_much)
|
465 |
|
|
_M_copy(__r->_M_refdata() + __pos + __len2,
|
466 |
|
|
_M_data() + __pos + __len1, __how_much);
|
467 |
|
|
|
468 |
|
|
_M_rep()->_M_dispose(__a);
|
469 |
|
|
_M_data(__r->_M_refdata());
|
470 |
|
|
}
|
471 |
|
|
else if (__how_much && __len1 != __len2)
|
472 |
|
|
{
|
473 |
|
|
// Work in-place.
|
474 |
|
|
_M_move(_M_data() + __pos + __len2,
|
475 |
|
|
_M_data() + __pos + __len1, __how_much);
|
476 |
|
|
}
|
477 |
|
|
_M_rep()->_M_set_length_and_sharable(__new_size);
|
478 |
|
|
}
|
479 |
|
|
|
480 |
|
|
template
|
481 |
|
|
void
|
482 |
|
|
basic_string<_CharT, _Traits, _Alloc>::
|
483 |
|
|
reserve(size_type __res)
|
484 |
|
|
{
|
485 |
|
|
if (__res != this->capacity() || _M_rep()->_M_is_shared())
|
486 |
|
|
{
|
487 |
|
|
// Make sure we don't shrink below the current size
|
488 |
|
|
if (__res < this->size())
|
489 |
|
|
__res = this->size();
|
490 |
|
|
const allocator_type __a = get_allocator();
|
491 |
|
|
_CharT* __tmp = _M_rep()->_M_clone(__a, __res - this->size());
|
492 |
|
|
_M_rep()->_M_dispose(__a);
|
493 |
|
|
_M_data(__tmp);
|
494 |
|
|
}
|
495 |
|
|
}
|
496 |
|
|
|
497 |
|
|
template
|
498 |
|
|
void
|
499 |
|
|
basic_string<_CharT, _Traits, _Alloc>::
|
500 |
|
|
swap(basic_string& __s)
|
501 |
|
|
{
|
502 |
|
|
if (_M_rep()->_M_is_leaked())
|
503 |
|
|
_M_rep()->_M_set_sharable();
|
504 |
|
|
if (__s._M_rep()->_M_is_leaked())
|
505 |
|
|
__s._M_rep()->_M_set_sharable();
|
506 |
|
|
if (this->get_allocator() == __s.get_allocator())
|
507 |
|
|
{
|
508 |
|
|
_CharT* __tmp = _M_data();
|
509 |
|
|
_M_data(__s._M_data());
|
510 |
|
|
__s._M_data(__tmp);
|
511 |
|
|
}
|
512 |
|
|
// The code below can usually be optimized away.
|
513 |
|
|
else
|
514 |
|
|
{
|
515 |
|
|
const basic_string __tmp1(_M_ibegin(), _M_iend(),
|
516 |
|
|
__s.get_allocator());
|
517 |
|
|
const basic_string __tmp2(__s._M_ibegin(), __s._M_iend(),
|
518 |
|
|
this->get_allocator());
|
519 |
|
|
*this = __tmp2;
|
520 |
|
|
__s = __tmp1;
|
521 |
|
|
}
|
522 |
|
|
}
|
523 |
|
|
|
524 |
|
|
template
|
525 |
|
|
typename basic_string<_CharT, _Traits, _Alloc>::_Rep*
|
526 |
|
|
basic_string<_CharT, _Traits, _Alloc>::_Rep::
|
527 |
|
|
_S_create(size_type __capacity, size_type __old_capacity,
|
528 |
|
|
const _Alloc& __alloc)
|
529 |
|
|
{
|
530 |
|
|
// _GLIBCXX_RESOLVE_LIB_DEFECTS
|
531 |
|
|
// 83. String::npos vs. string::max_size()
|
532 |
|
|
if (__capacity > _S_max_size)
|
533 |
|
|
__throw_length_error(__N("basic_string::_S_create"));
|
534 |
|
|
|
535 |
|
|
// The standard places no restriction on allocating more memory
|
536 |
|
|
// than is strictly needed within this layer at the moment or as
|
537 |
|
|
// requested by an explicit application call to reserve().
|
538 |
|
|
|
539 |
|
|
// Many malloc implementations perform quite poorly when an
|
540 |
|
|
// application attempts to allocate memory in a stepwise fashion
|
541 |
|
|
// growing each allocation size by only 1 char. Additionally,
|
542 |
|
|
// it makes little sense to allocate less linear memory than the
|
543 |
|
|
// natural blocking size of the malloc implementation.
|
544 |
|
|
// Unfortunately, we would need a somewhat low-level calculation
|
545 |
|
|
// with tuned parameters to get this perfect for any particular
|
546 |
|
|
// malloc implementation. Fortunately, generalizations about
|
547 |
|
|
// common features seen among implementations seems to suffice.
|
548 |
|
|
|
549 |
|
|
// __pagesize need not match the actual VM page size for good
|
550 |
|
|
// results in practice, thus we pick a common value on the low
|
551 |
|
|
// side. __malloc_header_size is an estimate of the amount of
|
552 |
|
|
// overhead per memory allocation (in practice seen N * sizeof
|
553 |
|
|
// (void*) where N is 0, 2 or 4). According to folklore,
|
554 |
|
|
// picking this value on the high side is better than
|
555 |
|
|
// low-balling it (especially when this algorithm is used with
|
556 |
|
|
// malloc implementations that allocate memory blocks rounded up
|
557 |
|
|
// to a size which is a power of 2).
|
558 |
|
|
const size_type __pagesize = 4096;
|
559 |
|
|
const size_type __malloc_header_size = 4 * sizeof(void*);
|
560 |
|
|
|
561 |
|
|
// The below implements an exponential growth policy, necessary to
|
562 |
|
|
// meet amortized linear time requirements of the library: see
|
563 |
|
|
// http://gcc.gnu.org/ml/libstdc++/2001-07/msg00085.html.
|
564 |
|
|
// It's active for allocations requiring an amount of memory above
|
565 |
|
|
// system pagesize. This is consistent with the requirements of the
|
566 |
|
|
// standard: http://gcc.gnu.org/ml/libstdc++/2001-07/msg00130.html
|
567 |
|
|
if (__capacity > __old_capacity && __capacity < 2 * __old_capacity)
|
568 |
|
|
__capacity = 2 * __old_capacity;
|
569 |
|
|
|
570 |
|
|
// NB: Need an array of char_type[__capacity], plus a terminating
|
571 |
|
|
// null char_type() element, plus enough for the _Rep data structure.
|
572 |
|
|
// Whew. Seemingly so needy, yet so elemental.
|
573 |
|
|
size_type __size = (__capacity + 1) * sizeof(_CharT) + sizeof(_Rep);
|
574 |
|
|
|
575 |
|
|
const size_type __adj_size = __size + __malloc_header_size;
|
576 |
|
|
if (__adj_size > __pagesize && __capacity > __old_capacity)
|
577 |
|
|
{
|
578 |
|
|
const size_type __extra = __pagesize - __adj_size % __pagesize;
|
579 |
|
|
__capacity += __extra / sizeof(_CharT);
|
580 |
|
|
// Never allocate a string bigger than _S_max_size.
|
581 |
|
|
if (__capacity > _S_max_size)
|
582 |
|
|
__capacity = _S_max_size;
|
583 |
|
|
__size = (__capacity + 1) * sizeof(_CharT) + sizeof(_Rep);
|
584 |
|
|
}
|
585 |
|
|
|
586 |
|
|
// NB: Might throw, but no worries about a leak, mate: _Rep()
|
587 |
|
|
// does not throw.
|
588 |
|
|
void* __place = _Raw_bytes_alloc(__alloc).allocate(__size);
|
589 |
|
|
_Rep *__p = new (__place) _Rep;
|
590 |
|
|
__p->_M_capacity = __capacity;
|
591 |
|
|
return __p;
|
592 |
|
|
}
|
593 |
|
|
|
594 |
|
|
template
|
595 |
|
|
_CharT*
|
596 |
|
|
basic_string<_CharT, _Traits, _Alloc>::_Rep::
|
597 |
|
|
_M_clone(const _Alloc& __alloc, size_type __res)
|
598 |
|
|
{
|
599 |
|
|
// Requested capacity of the clone.
|
600 |
|
|
const size_type __requested_cap = this->_M_length + __res;
|
601 |
|
|
_Rep* __r = _Rep::_S_create(__requested_cap, this->_M_capacity,
|
602 |
|
|
__alloc);
|
603 |
|
|
if (this->_M_length)
|
604 |
|
|
_M_copy(__r->_M_refdata(), _M_refdata(), this->_M_length);
|
605 |
|
|
|
606 |
|
|
__r->_M_set_length_and_sharable(this->_M_length);
|
607 |
|
|
return __r->_M_refdata();
|
608 |
|
|
}
|
609 |
|
|
|
610 |
|
|
template
|
611 |
|
|
void
|
612 |
|
|
basic_string<_CharT, _Traits, _Alloc>::
|
613 |
|
|
resize(size_type __n, _CharT __c)
|
614 |
|
|
{
|
615 |
|
|
const size_type __size = this->size();
|
616 |
|
|
_M_check_length(__size, __n, "basic_string::resize");
|
617 |
|
|
if (__size < __n)
|
618 |
|
|
this->append(__n - __size, __c);
|
619 |
|
|
else if (__n < __size)
|
620 |
|
|
this->erase(__n);
|
621 |
|
|
// else nothing (in particular, avoid calling _M_mutate() unnecessarily.)
|
622 |
|
|
}
|
623 |
|
|
|
624 |
|
|
template
|
625 |
|
|
template
|
626 |
|
|
basic_string<_CharT, _Traits, _Alloc>&
|
627 |
|
|
basic_string<_CharT, _Traits, _Alloc>::
|
628 |
|
|
_M_replace_dispatch(iterator __i1, iterator __i2, _InputIterator __k1,
|
629 |
|
|
_InputIterator __k2, __false_type)
|
630 |
|
|
{
|
631 |
|
|
const basic_string __s(__k1, __k2);
|
632 |
|
|
const size_type __n1 = __i2 - __i1;
|
633 |
|
|
_M_check_length(__n1, __s.size(), "basic_string::_M_replace_dispatch");
|
634 |
|
|
return _M_replace_safe(__i1 - _M_ibegin(), __n1, __s._M_data(),
|
635 |
|
|
__s.size());
|
636 |
|
|
}
|
637 |
|
|
|
638 |
|
|
template
|
639 |
|
|
basic_string<_CharT, _Traits, _Alloc>&
|
640 |
|
|
basic_string<_CharT, _Traits, _Alloc>::
|
641 |
|
|
_M_replace_aux(size_type __pos1, size_type __n1, size_type __n2,
|
642 |
|
|
_CharT __c)
|
643 |
|
|
{
|
644 |
|
|
_M_check_length(__n1, __n2, "basic_string::_M_replace_aux");
|
645 |
|
|
_M_mutate(__pos1, __n1, __n2);
|
646 |
|
|
if (__n2)
|
647 |
|
|
_M_assign(_M_data() + __pos1, __n2, __c);
|
648 |
|
|
return *this;
|
649 |
|
|
}
|
650 |
|
|
|
651 |
|
|
template
|
652 |
|
|
basic_string<_CharT, _Traits, _Alloc>&
|
653 |
|
|
basic_string<_CharT, _Traits, _Alloc>::
|
654 |
|
|
_M_replace_safe(size_type __pos1, size_type __n1, const _CharT* __s,
|
655 |
|
|
size_type __n2)
|
656 |
|
|
{
|
657 |
|
|
_M_mutate(__pos1, __n1, __n2);
|
658 |
|
|
if (__n2)
|
659 |
|
|
_M_copy(_M_data() + __pos1, __s, __n2);
|
660 |
|
|
return *this;
|
661 |
|
|
}
|
662 |
|
|
|
663 |
|
|
template
|
664 |
|
|
basic_string<_CharT, _Traits, _Alloc>
|
665 |
|
|
operator+(const _CharT* __lhs,
|
666 |
|
|
const basic_string<_CharT, _Traits, _Alloc>& __rhs)
|
667 |
|
|
{
|
668 |
|
|
__glibcxx_requires_string(__lhs);
|
669 |
|
|
typedef basic_string<_CharT, _Traits, _Alloc> __string_type;
|
670 |
|
|
typedef typename __string_type::size_type __size_type;
|
671 |
|
|
const __size_type __len = _Traits::length(__lhs);
|
672 |
|
|
__string_type __str;
|
673 |
|
|
__str.reserve(__len + __rhs.size());
|
674 |
|
|
__str.append(__lhs, __len);
|
675 |
|
|
__str.append(__rhs);
|
676 |
|
|
return __str;
|
677 |
|
|
}
|
678 |
|
|
|
679 |
|
|
template
|
680 |
|
|
basic_string<_CharT, _Traits, _Alloc>
|
681 |
|
|
operator+(_CharT __lhs, const basic_string<_CharT, _Traits, _Alloc>& __rhs)
|
682 |
|
|
{
|
683 |
|
|
typedef basic_string<_CharT, _Traits, _Alloc> __string_type;
|
684 |
|
|
typedef typename __string_type::size_type __size_type;
|
685 |
|
|
__string_type __str;
|
686 |
|
|
const __size_type __len = __rhs.size();
|
687 |
|
|
__str.reserve(__len + 1);
|
688 |
|
|
__str.append(__size_type(1), __lhs);
|
689 |
|
|
__str.append(__rhs);
|
690 |
|
|
return __str;
|
691 |
|
|
}
|
692 |
|
|
|
693 |
|
|
template
|
694 |
|
|
typename basic_string<_CharT, _Traits, _Alloc>::size_type
|
695 |
|
|
basic_string<_CharT, _Traits, _Alloc>::
|
696 |
|
|
copy(_CharT* __s, size_type __n, size_type __pos) const
|
697 |
|
|
{
|
698 |
|
|
_M_check(__pos, "basic_string::copy");
|
699 |
|
|
__n = _M_limit(__pos, __n);
|
700 |
|
|
__glibcxx_requires_string_len(__s, __n);
|
701 |
|
|
if (__n)
|
702 |
|
|
_M_copy(__s, _M_data() + __pos, __n);
|
703 |
|
|
// 21.3.5.7 par 3: do not append null. (good.)
|
704 |
|
|
return __n;
|
705 |
|
|
}
|
706 |
|
|
|
707 |
|
|
template
|
708 |
|
|
typename basic_string<_CharT, _Traits, _Alloc>::size_type
|
709 |
|
|
basic_string<_CharT, _Traits, _Alloc>::
|
710 |
|
|
find(const _CharT* __s, size_type __pos, size_type __n) const
|
711 |
|
|
{
|
712 |
|
|
__glibcxx_requires_string_len(__s, __n);
|
713 |
|
|
size_type __ret = npos;
|
714 |
|
|
const size_type __size = this->size();
|
715 |
|
|
if (__pos + __n <= __size)
|
716 |
|
|
{
|
717 |
|
|
const _CharT* __data = _M_data();
|
718 |
|
|
const _CharT* __p = std::search(__data + __pos, __data + __size,
|
719 |
|
|
__s, __s + __n, traits_type::eq);
|
720 |
|
|
if (__p != __data + __size || __n == 0)
|
721 |
|
|
__ret = __p - __data;
|
722 |
|
|
}
|
723 |
|
|
return __ret;
|
724 |
|
|
}
|
725 |
|
|
|
726 |
|
|
template
|
727 |
|
|
typename basic_string<_CharT, _Traits, _Alloc>::size_type
|
728 |
|
|
basic_string<_CharT, _Traits, _Alloc>::
|
729 |
|
|
find(_CharT __c, size_type __pos) const
|
730 |
|
|
{
|
731 |
|
|
size_type __ret = npos;
|
732 |
|
|
const size_type __size = this->size();
|
733 |
|
|
if (__pos < __size)
|
734 |
|
|
{
|
735 |
|
|
const _CharT* __data = _M_data();
|
736 |
|
|
const size_type __n = __size - __pos;
|
737 |
|
|
const _CharT* __p = traits_type::find(__data + __pos, __n, __c);
|
738 |
|
|
if (__p)
|
739 |
|
|
__ret = __p - __data;
|
740 |
|
|
}
|
741 |
|
|
return __ret;
|
742 |
|
|
}
|
743 |
|
|
|
744 |
|
|
template
|
745 |
|
|
typename basic_string<_CharT, _Traits, _Alloc>::size_type
|
746 |
|
|
basic_string<_CharT, _Traits, _Alloc>::
|
747 |
|
|
rfind(const _CharT* __s, size_type __pos, size_type __n) const
|
748 |
|
|
{
|
749 |
|
|
__glibcxx_requires_string_len(__s, __n);
|
750 |
|
|
const size_type __size = this->size();
|
751 |
|
|
if (__n <= __size)
|
752 |
|
|
{
|
753 |
|
|
__pos = std::min(size_type(__size - __n), __pos);
|
754 |
|
|
const _CharT* __data = _M_data();
|
755 |
|
|
do
|
756 |
|
|
{
|
757 |
|
|
if (traits_type::compare(__data + __pos, __s, __n) == 0)
|
758 |
|
|
return __pos;
|
759 |
|
|
}
|
760 |
|
|
while (__pos-- > 0);
|
761 |
|
|
}
|
762 |
|
|
return npos;
|
763 |
|
|
}
|
764 |
|
|
|
765 |
|
|
template
|
766 |
|
|
typename basic_string<_CharT, _Traits, _Alloc>::size_type
|
767 |
|
|
basic_string<_CharT, _Traits, _Alloc>::
|
768 |
|
|
rfind(_CharT __c, size_type __pos) const
|
769 |
|
|
{
|
770 |
|
|
size_type __size = this->size();
|
771 |
|
|
if (__size)
|
772 |
|
|
{
|
773 |
|
|
if (--__size > __pos)
|
774 |
|
|
__size = __pos;
|
775 |
|
|
for (++__size; __size-- > 0; )
|
776 |
|
|
if (traits_type::eq(_M_data()[__size], __c))
|
777 |
|
|
return __size;
|
778 |
|
|
}
|
779 |
|
|
return npos;
|
780 |
|
|
}
|
781 |
|
|
|
782 |
|
|
template
|
783 |
|
|
typename basic_string<_CharT, _Traits, _Alloc>::size_type
|
784 |
|
|
basic_string<_CharT, _Traits, _Alloc>::
|
785 |
|
|
find_first_of(const _CharT* __s, size_type __pos, size_type __n) const
|
786 |
|
|
{
|
787 |
|
|
__glibcxx_requires_string_len(__s, __n);
|
788 |
|
|
for (; __n && __pos < this->size(); ++__pos)
|
789 |
|
|
{
|
790 |
|
|
const _CharT* __p = traits_type::find(__s, __n, _M_data()[__pos]);
|
791 |
|
|
if (__p)
|
792 |
|
|
return __pos;
|
793 |
|
|
}
|
794 |
|
|
return npos;
|
795 |
|
|
}
|
796 |
|
|
|
797 |
|
|
template
|
798 |
|
|
typename basic_string<_CharT, _Traits, _Alloc>::size_type
|
799 |
|
|
basic_string<_CharT, _Traits, _Alloc>::
|
800 |
|
|
find_last_of(const _CharT* __s, size_type __pos, size_type __n) const
|
801 |
|
|
{
|
802 |
|
|
__glibcxx_requires_string_len(__s, __n);
|
803 |
|
|
size_type __size = this->size();
|
804 |
|
|
if (__size && __n)
|
805 |
|
|
{
|
806 |
|
|
if (--__size > __pos)
|
807 |
|
|
__size = __pos;
|
808 |
|
|
do
|
809 |
|
|
{
|
810 |
|
|
if (traits_type::find(__s, __n, _M_data()[__size]))
|
811 |
|
|
return __size;
|
812 |
|
|
}
|
813 |
|
|
while (__size-- != 0);
|
814 |
|
|
}
|
815 |
|
|
return npos;
|
816 |
|
|
}
|
817 |
|
|
|
818 |
|
|
template
|
819 |
|
|
typename basic_string<_CharT, _Traits, _Alloc>::size_type
|
820 |
|
|
basic_string<_CharT, _Traits, _Alloc>::
|
821 |
|
|
find_first_not_of(const _CharT* __s, size_type __pos, size_type __n) const
|
822 |
|
|
{
|
823 |
|
|
__glibcxx_requires_string_len(__s, __n);
|
824 |
|
|
for (; __pos < this->size(); ++__pos)
|
825 |
|
|
if (!traits_type::find(__s, __n, _M_data()[__pos]))
|
826 |
|
|
return __pos;
|
827 |
|
|
return npos;
|
828 |
|
|
}
|
829 |
|
|
|
830 |
|
|
template
|
831 |
|
|
typename basic_string<_CharT, _Traits, _Alloc>::size_type
|
832 |
|
|
basic_string<_CharT, _Traits, _Alloc>::
|
833 |
|
|
find_first_not_of(_CharT __c, size_type __pos) const
|
834 |
|
|
{
|
835 |
|
|
for (; __pos < this->size(); ++__pos)
|
836 |
|
|
if (!traits_type::eq(_M_data()[__pos], __c))
|
837 |
|
|
return __pos;
|
838 |
|
|
return npos;
|
839 |
|
|
}
|
840 |
|
|
|
841 |
|
|
template
|
842 |
|
|
typename basic_string<_CharT, _Traits, _Alloc>::size_type
|
843 |
|
|
basic_string<_CharT, _Traits, _Alloc>::
|
844 |
|
|
find_last_not_of(const _CharT* __s, size_type __pos, size_type __n) const
|
845 |
|
|
{
|
846 |
|
|
__glibcxx_requires_string_len(__s, __n);
|
847 |
|
|
size_type __size = this->size();
|
848 |
|
|
if (__size)
|
849 |
|
|
{
|
850 |
|
|
if (--__size > __pos)
|
851 |
|
|
__size = __pos;
|
852 |
|
|
do
|
853 |
|
|
{
|
854 |
|
|
if (!traits_type::find(__s, __n, _M_data()[__size]))
|
855 |
|
|
return __size;
|
856 |
|
|
}
|
857 |
|
|
while (__size--);
|
858 |
|
|
}
|
859 |
|
|
return npos;
|
860 |
|
|
}
|
861 |
|
|
|
862 |
|
|
template
|
863 |
|
|
typename basic_string<_CharT, _Traits, _Alloc>::size_type
|
864 |
|
|
basic_string<_CharT, _Traits, _Alloc>::
|
865 |
|
|
find_last_not_of(_CharT __c, size_type __pos) const
|
866 |
|
|
{
|
867 |
|
|
size_type __size = this->size();
|
868 |
|
|
if (__size)
|
869 |
|
|
{
|
870 |
|
|
if (--__size > __pos)
|
871 |
|
|
__size = __pos;
|
872 |
|
|
do
|
873 |
|
|
{
|
874 |
|
|
if (!traits_type::eq(_M_data()[__size], __c))
|
875 |
|
|
return __size;
|
876 |
|
|
}
|
877 |
|
|
while (__size--);
|
878 |
|
|
}
|
879 |
|
|
return npos;
|
880 |
|
|
}
|
881 |
|
|
|
882 |
|
|
template
|
883 |
|
|
int
|
884 |
|
|
basic_string<_CharT, _Traits, _Alloc>::
|
885 |
|
|
compare(size_type __pos, size_type __n, const basic_string& __str) const
|
886 |
|
|
{
|
887 |
|
|
_M_check(__pos, "basic_string::compare");
|
888 |
|
|
__n = _M_limit(__pos, __n);
|
889 |
|
|
const size_type __osize = __str.size();
|
890 |
|
|
const size_type __len = std::min(__n, __osize);
|
891 |
|
|
int __r = traits_type::compare(_M_data() + __pos, __str.data(), __len);
|
892 |
|
|
if (!__r)
|
893 |
|
|
__r = __n - __osize;
|
894 |
|
|
return __r;
|
895 |
|
|
}
|
896 |
|
|
|
897 |
|
|
template
|
898 |
|
|
int
|
899 |
|
|
basic_string<_CharT, _Traits, _Alloc>::
|
900 |
|
|
compare(size_type __pos1, size_type __n1, const basic_string& __str,
|
901 |
|
|
size_type __pos2, size_type __n2) const
|
902 |
|
|
{
|
903 |
|
|
_M_check(__pos1, "basic_string::compare");
|
904 |
|
|
__str._M_check(__pos2, "basic_string::compare");
|
905 |
|
|
__n1 = _M_limit(__pos1, __n1);
|
906 |
|
|
__n2 = __str._M_limit(__pos2, __n2);
|
907 |
|
|
const size_type __len = std::min(__n1, __n2);
|
908 |
|
|
int __r = traits_type::compare(_M_data() + __pos1,
|
909 |
|
|
__str.data() + __pos2, __len);
|
910 |
|
|
if (!__r)
|
911 |
|
|
__r = __n1 - __n2;
|
912 |
|
|
return __r;
|
913 |
|
|
}
|
914 |
|
|
|
915 |
|
|
template
|
916 |
|
|
int
|
917 |
|
|
basic_string<_CharT, _Traits, _Alloc>::
|
918 |
|
|
compare(const _CharT* __s) const
|
919 |
|
|
{
|
920 |
|
|
__glibcxx_requires_string(__s);
|
921 |
|
|
const size_type __size = this->size();
|
922 |
|
|
const size_type __osize = traits_type::length(__s);
|
923 |
|
|
const size_type __len = std::min(__size, __osize);
|
924 |
|
|
int __r = traits_type::compare(_M_data(), __s, __len);
|
925 |
|
|
if (!__r)
|
926 |
|
|
__r = __size - __osize;
|
927 |
|
|
return __r;
|
928 |
|
|
}
|
929 |
|
|
|
930 |
|
|
template
|
931 |
|
|
int
|
932 |
|
|
basic_string <_CharT, _Traits, _Alloc>::
|
933 |
|
|
compare(size_type __pos, size_type __n1, const _CharT* __s) const
|
934 |
|
|
{
|
935 |
|
|
__glibcxx_requires_string(__s);
|
936 |
|
|
_M_check(__pos, "basic_string::compare");
|
937 |
|
|
__n1 = _M_limit(__pos, __n1);
|
938 |
|
|
const size_type __osize = traits_type::length(__s);
|
939 |
|
|
const size_type __len = std::min(__n1, __osize);
|
940 |
|
|
int __r = traits_type::compare(_M_data() + __pos, __s, __len);
|
941 |
|
|
if (!__r)
|
942 |
|
|
__r = __n1 - __osize;
|
943 |
|
|
return __r;
|
944 |
|
|
}
|
945 |
|
|
|
946 |
|
|
template
|
947 |
|
|
int
|
948 |
|
|
basic_string <_CharT, _Traits, _Alloc>::
|
949 |
|
|
compare(size_type __pos, size_type __n1, const _CharT* __s,
|
950 |
|
|
size_type __n2) const
|
951 |
|
|
{
|
952 |
|
|
__glibcxx_requires_string_len(__s, __n2);
|
953 |
|
|
_M_check(__pos, "basic_string::compare");
|
954 |
|
|
__n1 = _M_limit(__pos, __n1);
|
955 |
|
|
const size_type __len = std::min(__n1, __n2);
|
956 |
|
|
int __r = traits_type::compare(_M_data() + __pos, __s, __len);
|
957 |
|
|
if (!__r)
|
958 |
|
|
__r = __n1 - __n2;
|
959 |
|
|
return __r;
|
960 |
|
|
}
|
961 |
|
|
|
962 |
|
|
// Inhibit implicit instantiations for required instantiations,
|
963 |
|
|
// which are defined via explicit instantiations elsewhere.
|
964 |
|
|
// NB: This syntax is a GNU extension.
|
965 |
|
|
#if _GLIBCXX_EXTERN_TEMPLATE
|
966 |
|
|
extern template class basic_string;
|
967 |
|
|
extern template
|
968 |
|
|
basic_istream&
|
969 |
|
|
operator>>(basic_istream&, string&);
|
970 |
|
|
extern template
|
971 |
|
|
basic_ostream&
|
972 |
|
|
operator<<(basic_ostream&, const string&);
|
973 |
|
|
extern template
|
974 |
|
|
basic_istream&
|
975 |
|
|
getline(basic_istream&, string&, char);
|
976 |
|
|
extern template
|
977 |
|
|
basic_istream&
|
978 |
|
|
getline(basic_istream&, string&);
|
979 |
|
|
|
980 |
|
|
#ifdef _GLIBCXX_USE_WCHAR_T
|
981 |
|
|
extern template class basic_string;
|
982 |
|
|
extern template
|
983 |
|
|
basic_istream&
|
984 |
|
|
operator>>(basic_istream&, wstring&);
|
985 |
|
|
extern template
|
986 |
|
|
basic_ostream&
|
987 |
|
|
operator<<(basic_ostream&, const wstring&);
|
988 |
|
|
extern template
|
989 |
|
|
basic_istream&
|
990 |
|
|
getline(basic_istream&, wstring&, wchar_t);
|
991 |
|
|
extern template
|
992 |
|
|
basic_istream&
|
993 |
|
|
getline(basic_istream&, wstring&);
|
994 |
|
|
#endif
|
995 |
|
|
#endif
|
996 |
|
|
} // namespace std
|
997 |
|
|
|
998 |
|
|
#endif
|