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- // Components for manipulating sequences of characters -*- C++ -*-
-
- // Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004
- // Free Software Foundation, Inc.
- //
- // This file is part of the GNU ISO C++ Library. This library is free
- // software; you can redistribute it and/or modify it under the
- // terms of the GNU General Public License as published by the
- // Free Software Foundation; either version 2, or (at your option)
- // any later version.
-
- // This library is distributed in the hope that it will be useful,
- // but WITHOUT ANY WARRANTY; without even the implied warranty of
- // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- // GNU General Public License for more details.
-
- // You should have received a copy of the GNU General Public License along
- // with this library; see the file COPYING. If not, write to the Free
- // Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307,
- // USA.
-
- // As a special exception, you may use this file as part of a free software
- // library without restriction. Specifically, if other files instantiate
- // templates or use macros or inline functions from this file, or you compile
- // this file and link it with other files to produce an executable, this
- // file does not by itself cause the resulting executable to be covered by
- // the GNU General Public License. This exception does not however
- // invalidate any other reasons why the executable file might be covered by
- // the GNU General Public License.
-
- //
- // ISO C++ 14882: 21 Strings library
- //
-
- // This file is included by <string>. It is not meant to be included
- // separately.
-
- // Written by Jason Merrill based upon the specification by Takanori Adachi
- // in ANSI X3J16/94-0013R2. Rewritten by Nathan Myers to ISO-14882.
-
- #ifndef _BASIC_STRING_TCC
- #define _BASIC_STRING_TCC 1
-
- #pragma GCC system_header
-
- namespace std
- {
- template<typename _Type>
- inline bool
- __is_null_pointer(_Type* __ptr)
- { return __ptr == 0; }
-
- template<typename _Type>
- inline bool
- __is_null_pointer(_Type)
- { return false; }
-
- template<typename _CharT, typename _Traits, typename _Alloc>
- const typename basic_string<_CharT, _Traits, _Alloc>::size_type
- basic_string<_CharT, _Traits, _Alloc>::
- _Rep::_S_max_size = (((npos - sizeof(_Rep_base))/sizeof(_CharT)) - 1) / 4;
-
- template<typename _CharT, typename _Traits, typename _Alloc>
- const _CharT
- basic_string<_CharT, _Traits, _Alloc>::
- _Rep::_S_terminal = _CharT();
-
- template<typename _CharT, typename _Traits, typename _Alloc>
- const typename basic_string<_CharT, _Traits, _Alloc>::size_type
- basic_string<_CharT, _Traits, _Alloc>::npos;
-
- // Linker sets _S_empty_rep_storage to all 0s (one reference, empty string)
- // at static init time (before static ctors are run).
- template<typename _CharT, typename _Traits, typename _Alloc>
- typename basic_string<_CharT, _Traits, _Alloc>::size_type
- basic_string<_CharT, _Traits, _Alloc>::_Rep::_S_empty_rep_storage[
- (sizeof(_Rep_base) + sizeof(_CharT) + sizeof(size_type) - 1) /
- sizeof(size_type)];
-
- // NB: This is the special case for Input Iterators, used in
- // istreambuf_iterators, etc.
- // Input Iterators have a cost structure very different from
- // pointers, calling for a different coding style.
- template<typename _CharT, typename _Traits, typename _Alloc>
- template<typename _InIterator>
- _CharT*
- basic_string<_CharT, _Traits, _Alloc>::
- _S_construct(_InIterator __beg, _InIterator __end, const _Alloc& __a,
- input_iterator_tag)
- {
- if (__beg == __end && __a == _Alloc())
- return _S_empty_rep()._M_refdata();
- // Avoid reallocation for common case.
- _CharT __buf[128];
- size_type __len = 0;
- while (__beg != __end && __len < sizeof(__buf) / sizeof(_CharT))
- {
- __buf[__len++] = *__beg;
- ++__beg;
- }
- _Rep* __r = _Rep::_S_create(__len, size_type(0), __a);
- traits_type::copy(__r->_M_refdata(), __buf, __len);
- try
- {
- while (__beg != __end)
- {
- if (__len == __r->_M_capacity)
- {
- // Allocate more space.
- _Rep* __another = _Rep::_S_create(__len + 1, __len, __a);
- traits_type::copy(__another->_M_refdata(),
- __r->_M_refdata(), __len);
- __r->_M_destroy(__a);
- __r = __another;
- }
- __r->_M_refdata()[__len++] = *__beg;
- ++__beg;
- }
- }
- catch(...)
- {
- __r->_M_destroy(__a);
- __throw_exception_again;
- }
- __r->_M_length = __len;
- __r->_M_refdata()[__len] = _Rep::_S_terminal; // grrr.
- return __r->_M_refdata();
- }
-
- template<typename _CharT, typename _Traits, typename _Alloc>
- template <typename _InIterator>
- _CharT*
- basic_string<_CharT, _Traits, _Alloc>::
- _S_construct(_InIterator __beg, _InIterator __end, const _Alloc& __a,
- forward_iterator_tag)
- {
- if (__beg == __end && __a == _Alloc())
- return _S_empty_rep()._M_refdata();
-
- // NB: Not required, but considered best practice.
- if (__builtin_expect(__is_null_pointer(__beg), 0))
- __throw_logic_error(__N("basic_string::_S_construct NULL not valid"));
-
- const size_type __dnew = static_cast<size_type>(std::distance(__beg,
- __end));
- // Check for out_of_range and length_error exceptions.
- _Rep* __r = _Rep::_S_create(__dnew, size_type(0), __a);
- try
- { _S_copy_chars(__r->_M_refdata(), __beg, __end); }
- catch(...)
- {
- __r->_M_destroy(__a);
- __throw_exception_again;
- }
- __r->_M_length = __dnew;
- __r->_M_refdata()[__dnew] = _Rep::_S_terminal; // grrr.
- return __r->_M_refdata();
- }
-
- template<typename _CharT, typename _Traits, typename _Alloc>
- _CharT*
- basic_string<_CharT, _Traits, _Alloc>::
- _S_construct(size_type __n, _CharT __c, const _Alloc& __a)
- {
- if (__n == 0 && __a == _Alloc())
- return _S_empty_rep()._M_refdata();
-
- // Check for out_of_range and length_error exceptions.
- _Rep* __r = _Rep::_S_create(__n, size_type(0), __a);
- if (__n)
- traits_type::assign(__r->_M_refdata(), __n, __c);
-
- __r->_M_length = __n;
- __r->_M_refdata()[__n] = _Rep::_S_terminal; // grrr
- return __r->_M_refdata();
- }
-
- template<typename _CharT, typename _Traits, typename _Alloc>
- basic_string<_CharT, _Traits, _Alloc>::
- basic_string(const basic_string& __str)
- : _M_dataplus(__str._M_rep()->_M_grab(_Alloc(__str.get_allocator()),
- __str.get_allocator()),
- __str.get_allocator())
- { }
-
- template<typename _CharT, typename _Traits, typename _Alloc>
- basic_string<_CharT, _Traits, _Alloc>::
- basic_string(const _Alloc& __a)
- : _M_dataplus(_S_construct(size_type(), _CharT(), __a), __a)
- { }
-
- template<typename _CharT, typename _Traits, typename _Alloc>
- basic_string<_CharT, _Traits, _Alloc>::
- basic_string(const basic_string& __str, size_type __pos, size_type __n)
- : _M_dataplus(_S_construct(__str._M_data()
- + __str._M_check(__pos,
- "basic_string::basic_string"),
- __str._M_data() + __str._M_limit(__pos, __n)
- + __pos, _Alloc()), _Alloc())
- { }
-
- template<typename _CharT, typename _Traits, typename _Alloc>
- basic_string<_CharT, _Traits, _Alloc>::
- basic_string(const basic_string& __str, size_type __pos,
- size_type __n, const _Alloc& __a)
- : _M_dataplus(_S_construct(__str._M_data()
- + __str._M_check(__pos,
- "basic_string::basic_string"),
- __str._M_data() + __str._M_limit(__pos, __n)
- + __pos, __a), __a)
- { }
-
- // TBD: DPG annotate
- template<typename _CharT, typename _Traits, typename _Alloc>
- basic_string<_CharT, _Traits, _Alloc>::
- basic_string(const _CharT* __s, size_type __n, const _Alloc& __a)
- : _M_dataplus(_S_construct(__s, __s + __n, __a), __a)
- { }
-
- // TBD: DPG annotate
- template<typename _CharT, typename _Traits, typename _Alloc>
- basic_string<_CharT, _Traits, _Alloc>::
- basic_string(const _CharT* __s, const _Alloc& __a)
- : _M_dataplus(_S_construct(__s, __s ? __s + traits_type::length(__s) :
- __s + npos, __a), __a)
- { }
-
- template<typename _CharT, typename _Traits, typename _Alloc>
- basic_string<_CharT, _Traits, _Alloc>::
- basic_string(size_type __n, _CharT __c, const _Alloc& __a)
- : _M_dataplus(_S_construct(__n, __c, __a), __a)
- { }
-
- // TBD: DPG annotate
- template<typename _CharT, typename _Traits, typename _Alloc>
- template<typename _InputIterator>
- basic_string<_CharT, _Traits, _Alloc>::
- basic_string(_InputIterator __beg, _InputIterator __end, const _Alloc& __a)
- : _M_dataplus(_S_construct(__beg, __end, __a), __a)
- { }
-
- template<typename _CharT, typename _Traits, typename _Alloc>
- basic_string<_CharT, _Traits, _Alloc>&
- basic_string<_CharT, _Traits, _Alloc>::
- assign(const basic_string& __str)
- {
- if (_M_rep() != __str._M_rep())
- {
- // XXX MT
- const allocator_type __a = this->get_allocator();
- _CharT* __tmp = __str._M_rep()->_M_grab(__a, __str.get_allocator());
- _M_rep()->_M_dispose(__a);
- _M_data(__tmp);
- }
- return *this;
- }
-
- template<typename _CharT, typename _Traits, typename _Alloc>
- basic_string<_CharT, _Traits, _Alloc>&
- basic_string<_CharT, _Traits, _Alloc>::
- assign(const _CharT* __s, size_type __n)
- {
- __glibcxx_requires_string_len(__s, __n);
- if (__n > this->max_size())
- __throw_length_error(__N("basic_string::assign"));
- if (_M_rep()->_M_is_shared() || less<const _CharT*>()(__s, _M_data())
- || less<const _CharT*>()(_M_data() + this->size(), __s))
- return _M_replace_safe(size_type(0), this->size(), __s, __n);
- else
- {
- // Work in-place
- const size_type __pos = __s - _M_data();
- if (__pos >= __n)
- traits_type::copy(_M_data(), __s, __n);
- else if (__pos)
- traits_type::move(_M_data(), __s, __n);
- _M_rep()->_M_set_sharable();
- _M_rep()->_M_length = __n;
- _M_data()[__n] = _Rep::_S_terminal; // grr.
- return *this;
- }
- }
-
- template<typename _CharT, typename _Traits, typename _Alloc>
- basic_string<_CharT, _Traits, _Alloc>&
- basic_string<_CharT, _Traits, _Alloc>::
- insert(size_type __pos, const _CharT* __s, size_type __n)
- {
- __glibcxx_requires_string_len(__s, __n);
- _M_check(__pos, "basic_string::insert");
- if (this->max_size() - this->size() < __n)
- __throw_length_error(__N("basic_string::insert"));
- if (_M_rep()->_M_is_shared() || less<const _CharT*>()(__s, _M_data())
- || less<const _CharT*>()(_M_data() + this->size(), __s))
- return _M_replace_safe(__pos, size_type(0), __s, __n);
- else
- {
- // Work in-place. If _M_mutate reallocates the string, __s
- // does not point anymore to valid data, therefore we save its
- // offset, then we restore it.
- const size_type __off = __s - _M_data();
- _M_mutate(__pos, 0, __n);
- __s = _M_data() + __off;
- _CharT* __p = _M_data() + __pos;
- if (__s + __n <= __p)
- traits_type::copy(__p, __s, __n);
- else if (__s >= __p)
- traits_type::copy(__p, __s + __n, __n);
- else
- {
- const size_type __nleft = __p - __s;
- traits_type::copy(__p, __s, __nleft);
- traits_type::copy(__p + __nleft, __p + __n, __n - __nleft);
- }
- return *this;
- }
- }
-
- template<typename _CharT, typename _Traits, typename _Alloc>
- basic_string<_CharT, _Traits, _Alloc>&
- basic_string<_CharT, _Traits, _Alloc>::
- replace(size_type __pos, size_type __n1, const _CharT* __s,
- size_type __n2)
- {
- __glibcxx_requires_string_len(__s, __n2);
- _M_check(__pos, "basic_string::replace");
- __n1 = _M_limit(__pos, __n1);
- if (this->max_size() - (this->size() - __n1) < __n2)
- __throw_length_error(__N("basic_string::replace"));
- bool __left;
- if (_M_rep()->_M_is_shared() || less<const _CharT*>()(__s, _M_data())
- || less<const _CharT*>()(_M_data() + this->size(), __s))
- return _M_replace_safe(__pos, __n1, __s, __n2);
- else if ((__left = __s + __n2 <= _M_data() + __pos)
- || _M_data() + __pos + __n1 <= __s)
- {
- // Work in-place: non-overlapping case.
- const size_type __off = __s - _M_data();
- _M_mutate(__pos, __n1, __n2);
- if (__left)
- traits_type::copy(_M_data() + __pos,
- _M_data() + __off, __n2);
- else
- traits_type::copy(_M_data() + __pos,
- _M_data() + __off + __n2 - __n1, __n2);
- return *this;
- }
- else
- {
- // Todo: overlapping case.
- const basic_string __tmp(__s, __n2);
- return _M_replace_safe(__pos, __n1, __tmp._M_data(), __n2);
- }
- }
-
- template<typename _CharT, typename _Traits, typename _Alloc>
- void
- basic_string<_CharT, _Traits, _Alloc>::_Rep::
- _M_destroy(const _Alloc& __a) throw ()
- {
- if (this == &_S_empty_rep())
- return;
- const size_type __size = sizeof(_Rep_base) +
- (this->_M_capacity + 1) * sizeof(_CharT);
- _Raw_bytes_alloc(__a).deallocate(reinterpret_cast<char*>(this), __size);
- }
-
- template<typename _CharT, typename _Traits, typename _Alloc>
- void
- basic_string<_CharT, _Traits, _Alloc>::_M_leak_hard()
- {
- if (_M_rep() == &_S_empty_rep())
- return;
- if (_M_rep()->_M_is_shared())
- _M_mutate(0, 0, 0);
- _M_rep()->_M_set_leaked();
- }
-
- template<typename _CharT, typename _Traits, typename _Alloc>
- void
- basic_string<_CharT, _Traits, _Alloc>::
- _M_mutate(size_type __pos, size_type __len1, size_type __len2)
- {
- const size_type __old_size = this->size();
- const size_type __new_size = __old_size + __len2 - __len1;
- const size_type __how_much = __old_size - __pos - __len1;
-
- if (_M_rep() == &_S_empty_rep()
- || _M_rep()->_M_is_shared() || __new_size > capacity())
- {
- // Must reallocate.
- const allocator_type __a = get_allocator();
- _Rep* __r = _Rep::_S_create(__new_size, capacity(), __a);
-
- if (__pos)
- traits_type::copy(__r->_M_refdata(), _M_data(), __pos);
- if (__how_much)
- traits_type::copy(__r->_M_refdata() + __pos + __len2,
- _M_data() + __pos + __len1, __how_much);
-
- _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,
- _M_data() + __pos + __len1, __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(__N("basic_string::reserve"));
- // Make sure we don't shrink below the current size
- if (__res < this->size())
- __res = this->size();
- const 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
- {
- const basic_string __tmp1(_M_ibegin(), _M_iend(),
- __s.get_allocator());
- const 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_type __capacity, size_type __old_capacity,
- const _Alloc& __alloc)
- {
- typedef basic_string<_CharT, _Traits, _Alloc> __string_type;
- // _GLIBCXX_RESOLVE_LIB_DEFECTS
- // 83. String::npos vs. string::max_size()
- if (__capacity > _S_max_size)
- __throw_length_error(__N("basic_string::_S_create"));
-
- // 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_type __pagesize = 4096; // must be 2^i * __subpagesize
- const size_type __subpagesize = 128; // should be >> __malloc_header_size
- const size_type __malloc_header_size = 4 * sizeof (void*);
-
- // The below implements an exponential growth policy, necessary to
- // meet amortized linear time requirements of the library: see
- // http://gcc.gnu.org/ml/libstdc++/2001-07/msg00085.html.
- // It's active for allocations requiring an amount of memory above
- // system pagesize. This is consistent with the requirements of the
- // standard: http://gcc.gnu.org/ml/libstdc++/2001-07/msg00130.html
-
- // The biggest string which fits in a memory page
- const size_type __page_capacity = ((__pagesize - __malloc_header_size
- - sizeof(_Rep) - sizeof(_CharT))
- / sizeof(_CharT));
-
- if (__capacity > __old_capacity && __capacity < 2 * __old_capacity
- && __capacity > __page_capacity)
- __capacity = 2 * __old_capacity;
-
- // 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_type __size = (__capacity + 1) * sizeof(_CharT) + sizeof(_Rep);
-
- const size_type __adj_size = __size + __malloc_header_size;
- if (__adj_size > __pagesize)
- {
- const size_type __extra = __pagesize - __adj_size % __pagesize;
- __capacity += __extra / sizeof(_CharT);
- // Never allocate a string bigger than _S_max_size.
- if (__capacity > _S_max_size)
- __capacity = _S_max_size;
- __size = (__capacity + 1) * sizeof(_CharT) + sizeof(_Rep);
- }
- else if (__size > __subpagesize)
- {
- const size_type __extra = __subpagesize - __adj_size % __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 = this->_M_length + __res;
- _Rep* __r = _Rep::_S_create(__requested_cap, this->_M_capacity,
- __alloc);
- if (this->_M_length)
- traits_type::copy(__r->_M_refdata(), _M_refdata(),
- this->_M_length);
-
- __r->_M_length = this->_M_length;
- __r->_M_refdata()[this->_M_length] = _Rep::_S_terminal;
- 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(__N("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.)
- }
-
- template<typename _CharT, typename _Traits, typename _Alloc>
- template<typename _InputIterator>
- basic_string<_CharT, _Traits, _Alloc>&
- basic_string<_CharT, _Traits, _Alloc>::
- _M_replace_dispatch(iterator __i1, iterator __i2, _InputIterator __k1,
- _InputIterator __k2, __false_type)
- {
- const basic_string __s(__k1, __k2);
- const size_type __n1 = __i2 - __i1;
- if (this->max_size() - (this->size() - __n1) < __s.size())
- __throw_length_error(__N("basic_string::_M_replace_dispatch"));
- return _M_replace_safe(__i1 - _M_ibegin(), __n1, __s._M_data(),
- __s.size());
- }
-
- 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
- // pointer __str._M_data() 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(this->size(), size_type(0), __str._M_data(),
- __str.size());
- }
-
- 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
- // pointer __str._M_data() formed here.
- __str._M_check(__pos, "basic_string::append");
- __n = __str._M_limit(__pos, __n);
- const size_type __len = __n + this->size();
- if (__len > this->capacity())
- this->reserve(__len);
- return _M_replace_safe(this->size(), size_type(0), __str._M_data()
- + __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)
- {
- __glibcxx_requires_string_len(__s, __n);
- const size_type __len = __n + this->size();
- if (__len > this->capacity())
- this->reserve(__len);
- return _M_replace_safe(this->size(), size_type(0), __s, __n);
- }
-
- template<typename _CharT, typename _Traits, typename _Alloc>
- basic_string<_CharT, _Traits, _Alloc>
- operator+(const _CharT* __lhs,
- const basic_string<_CharT, _Traits, _Alloc>& __rhs)
- {
- __glibcxx_requires_string(__lhs);
- 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, __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>
- typename basic_string<_CharT, _Traits, _Alloc>::size_type
- basic_string<_CharT, _Traits, _Alloc>::
- copy(_CharT* __s, size_type __n, size_type __pos) const
- {
- _M_check(__pos, "basic_string::copy");
- __n = _M_limit(__pos, __n);
- __glibcxx_requires_string_len(__s, __n);
- if (__n)
- 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
- {
- __glibcxx_requires_string_len(__s, __n);
- const size_type __size = this->size();
- const _CharT* __data = _M_data();
- for (; __pos + __n <= __size; ++__pos)
- if (traits_type::compare(__data + __pos, __s, __n) == 0)
- 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(_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
- {
- __glibcxx_requires_string_len(__s, __n);
- 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
- {
- size_type __size = this->size();
- if (__size)
- {
- if (--__size > __pos)
- __size = __pos;
- for (++__size; __size-- > 0; )
- if (traits_type::eq(_M_data()[__size], __c))
- return __size;
- }
- 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
- {
- __glibcxx_requires_string_len(__s, __n);
- 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
- {
- __glibcxx_requires_string_len(__s, __n);
- 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
- {
- __glibcxx_requires_string_len(__s, __n);
- for (; __pos < this->size(); ++__pos)
- if (!traits_type::find(__s, __n, _M_data()[__pos]))
- 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_first_not_of(_CharT __c, size_type __pos) const
- {
- for (; __pos < this->size(); ++__pos)
- if (!traits_type::eq(_M_data()[__pos], __c))
- 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_not_of(const _CharT* __s, size_type __pos, size_type __n) const
- {
- __glibcxx_requires_string_len(__s, __n);
- 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
- {
- _M_check(__pos, "basic_string::compare");
- __n = _M_limit(__pos, __n);
- const size_type __osize = __str.size();
- const size_type __len = std::min(__n, __osize);
- int __r = traits_type::compare(_M_data() + __pos, __str.data(), __len);
- if (!__r)
- __r = __n - __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
- {
- _M_check(__pos1, "basic_string::compare");
- __str._M_check(__pos2, "basic_string::compare");
- __n1 = _M_limit(__pos1, __n1);
- __n2 = __str._M_limit(__pos2, __n2);
- const size_type __len = std::min(__n1, __n2);
- int __r = traits_type::compare(_M_data() + __pos1,
- __str.data() + __pos2, __len);
- if (!__r)
- __r = __n1 - __n2;
- return __r;
- }
-
- template<typename _CharT, typename _Traits, typename _Alloc>
- int
- basic_string<_CharT, _Traits, _Alloc>::
- compare(const _CharT* __s) const
- {
- __glibcxx_requires_string(__s);
- 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
- {
- __glibcxx_requires_string(__s);
- _M_check(__pos, "basic_string::compare");
- __n1 = _M_limit(__pos, __n1);
- const size_type __osize = traits_type::length(__s);
- const size_type __len = std::min(__n1, __osize);
- int __r = traits_type::compare(_M_data() + __pos, __s, __len);
- if (!__r)
- __r = __n1 - __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
- {
- __glibcxx_requires_string_len(__s, __n2);
- _M_check(__pos, "basic_string::compare");
- __n1 = _M_limit(__pos, __n1);
- const size_type __len = std::min(__n1, __n2);
- int __r = traits_type::compare(_M_data() + __pos, __s, __len);
- if (!__r)
- __r = __n1 - __n2;
- return __r;
- }
-
- // Inhibit implicit instantiations for required instantiations,
- // which are defined via explicit instantiations elsewhere.
- // NB: This syntax is a GNU extension.
- #if _GLIBCXX_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 _GLIBCXX_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
-