--- /dev/null
+// Components for manipulating sequences of characters -*- C++ -*-
+
+// Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005,
+// 2006, 2007, 2008, 2009, 2010, 2011
+// 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 3, 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.
+
+// Under Section 7 of GPL version 3, you are granted additional
+// permissions described in the GCC Runtime Library Exception, version
+// 3.1, as published by the Free Software Foundation.
+
+// You should have received a copy of the GNU General Public License and
+// a copy of the GCC Runtime Library Exception along with this program;
+// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
+// <http://www.gnu.org/licenses/>.
+
+/** @file bits/basic_string.tcc
+ * This is an internal header file, included by other library headers.
+ * Do not attempt to use it directly. @headername{string}
+ */
+
+//
+// ISO C++ 14882: 21 Strings library
+//
+
+// 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
+
+#include <bits/cxxabi_forced.h>
+
+namespace std _GLIBCXX_VISIBILITY(default)
+{
+_GLIBCXX_BEGIN_NAMESPACE_VERSION
+
+ 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 _GLIBCXX_FULLY_DYNAMIC_STRING == 0
+ if (__beg == __end && __a == _Alloc())
+ return _S_empty_rep()._M_refdata();
+#endif
+ // 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);
+ _M_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);
+ _M_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_set_length_and_sharable(__len);
+ 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 _GLIBCXX_FULLY_DYNAMIC_STRING == 0
+ if (__beg == __end && __a == _Alloc())
+ return _S_empty_rep()._M_refdata();
+#endif
+ // NB: Not required, but considered best practice.
+ if (__gnu_cxx::__is_null_pointer(__beg) && __beg != __end)
+ __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_set_length_and_sharable(__dnew);
+ 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 _GLIBCXX_FULLY_DYNAMIC_STRING == 0
+ if (__n == 0 && __a == _Alloc())
+ return _S_empty_rep()._M_refdata();
+#endif
+ // Check for out_of_range and length_error exceptions.
+ _Rep* __r = _Rep::_S_create(__n, size_type(0), __a);
+ if (__n)
+ _M_assign(__r->_M_refdata(), __n, __c);
+
+ __r->_M_set_length_and_sharable(__n);
+ 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)
+ { }
+
+#ifdef __GXX_EXPERIMENTAL_CXX0X__
+ template<typename _CharT, typename _Traits, typename _Alloc>
+ basic_string<_CharT, _Traits, _Alloc>::
+ basic_string(initializer_list<_CharT> __l, const _Alloc& __a)
+ : _M_dataplus(_S_construct(__l.begin(), __l.end(), __a), __a)
+ { }
+#endif
+
+ 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);
+ _M_check_length(this->size(), __n, "basic_string::assign");
+ if (_M_disjunct(__s) || _M_rep()->_M_is_shared())
+ 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)
+ _M_copy(_M_data(), __s, __n);
+ else if (__pos)
+ _M_move(_M_data(), __s, __n);
+ _M_rep()->_M_set_length_and_sharable(__n);
+ return *this;
+ }
+ }
+
+ template<typename _CharT, typename _Traits, typename _Alloc>
+ basic_string<_CharT, _Traits, _Alloc>&
+ basic_string<_CharT, _Traits, _Alloc>::
+ append(size_type __n, _CharT __c)
+ {
+ if (__n)
+ {
+ _M_check_length(size_type(0), __n, "basic_string::append");
+ const size_type __len = __n + this->size();
+ if (__len > this->capacity() || _M_rep()->_M_is_shared())
+ this->reserve(__len);
+ _M_assign(_M_data() + this->size(), __n, __c);
+ _M_rep()->_M_set_length_and_sharable(__len);
+ }
+ return *this;
+ }
+
+ 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);
+ if (__n)
+ {
+ _M_check_length(size_type(0), __n, "basic_string::append");
+ const size_type __len = __n + this->size();
+ if (__len > this->capacity() || _M_rep()->_M_is_shared())
+ {
+ if (_M_disjunct(__s))
+ this->reserve(__len);
+ else
+ {
+ const size_type __off = __s - _M_data();
+ this->reserve(__len);
+ __s = _M_data() + __off;
+ }
+ }
+ _M_copy(_M_data() + this->size(), __s, __n);
+ _M_rep()->_M_set_length_and_sharable(__len);
+ }
+ return *this;
+ }
+
+ template<typename _CharT, typename _Traits, typename _Alloc>
+ basic_string<_CharT, _Traits, _Alloc>&
+ basic_string<_CharT, _Traits, _Alloc>::
+ append(const basic_string& __str)
+ {
+ const size_type __size = __str.size();
+ if (__size)
+ {
+ const size_type __len = __size + this->size();
+ if (__len > this->capacity() || _M_rep()->_M_is_shared())
+ this->reserve(__len);
+ _M_copy(_M_data() + this->size(), __str._M_data(), __size);
+ _M_rep()->_M_set_length_and_sharable(__len);
+ }
+ return *this;
+ }
+
+ 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)
+ {
+ __str._M_check(__pos, "basic_string::append");
+ __n = __str._M_limit(__pos, __n);
+ if (__n)
+ {
+ const size_type __len = __n + this->size();
+ if (__len > this->capacity() || _M_rep()->_M_is_shared())
+ this->reserve(__len);
+ _M_copy(_M_data() + this->size(), __str._M_data() + __pos, __n);
+ _M_rep()->_M_set_length_and_sharable(__len);
+ }
+ 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");
+ _M_check_length(size_type(0), __n, "basic_string::insert");
+ if (_M_disjunct(__s) || _M_rep()->_M_is_shared())
+ return _M_replace_safe(__pos, size_type(0), __s, __n);
+ else
+ {
+ // Work in-place.
+ 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)
+ _M_copy(__p, __s, __n);
+ else if (__s >= __p)
+ _M_copy(__p, __s + __n, __n);
+ else
+ {
+ const size_type __nleft = __p - __s;
+ _M_copy(__p, __s, __nleft);
+ _M_copy(__p + __nleft, __p + __n, __n - __nleft);
+ }
+ return *this;
+ }
+ }
+
+ template<typename _CharT, typename _Traits, typename _Alloc>
+ typename basic_string<_CharT, _Traits, _Alloc>::iterator
+ basic_string<_CharT, _Traits, _Alloc>::
+ erase(iterator __first, iterator __last)
+ {
+ _GLIBCXX_DEBUG_PEDASSERT(__first >= _M_ibegin() && __first <= __last
+ && __last <= _M_iend());
+
+ // NB: This isn't just an optimization (bail out early when
+ // there is nothing to do, really), it's also a correctness
+ // issue vs MT, see libstdc++/40518.
+ const size_type __size = __last - __first;
+ if (__size)
+ {
+ const size_type __pos = __first - _M_ibegin();
+ _M_mutate(__pos, __size, size_type(0));
+ _M_rep()->_M_set_leaked();
+ return iterator(_M_data() + __pos);
+ }
+ else
+ return __first;
+ }
+
+ 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);
+ _M_check_length(__n1, __n2, "basic_string::replace");
+ bool __left;
+ if (_M_disjunct(__s) || _M_rep()->_M_is_shared())
+ 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.
+ size_type __off = __s - _M_data();
+ __left ? __off : (__off += __n2 - __n1);
+ _M_mutate(__pos, __n1, __n2);
+ _M_copy(_M_data() + __pos, _M_data() + __off, __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 ()
+ {
+ 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 _GLIBCXX_FULLY_DYNAMIC_STRING == 0
+ if (_M_rep() == &_S_empty_rep())
+ return;
+#endif
+ 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 (__new_size > this->capacity() || _M_rep()->_M_is_shared())
+ {
+ // Must reallocate.
+ const allocator_type __a = get_allocator();
+ _Rep* __r = _Rep::_S_create(__new_size, this->capacity(), __a);
+
+ if (__pos)
+ _M_copy(__r->_M_refdata(), _M_data(), __pos);
+ if (__how_much)
+ _M_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.
+ _M_move(_M_data() + __pos + __len2,
+ _M_data() + __pos + __len1, __how_much);
+ }
+ _M_rep()->_M_set_length_and_sharable(__new_size);
+ }
+
+ 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())
+ {
+ // 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)
+ {
+ // _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;
+ 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
+ if (__capacity > __old_capacity && __capacity < 2 * __old_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 && __capacity > __old_capacity)
+ {
+ 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);
+ }
+
+ // 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;
+ // ABI compatibility - 3.4.x set in _S_create both
+ // _M_refcount and _M_length. All callers of _S_create
+ // in basic_string.tcc then set just _M_length.
+ // In 4.0.x and later both _M_refcount and _M_length
+ // are initialized in the callers, unfortunately we can
+ // have 3.4.x compiled code with _S_create callers inlined
+ // calling 4.0.x+ _S_create.
+ __p->_M_set_sharable();
+ 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)
+ _M_copy(__r->_M_refdata(), _M_refdata(), this->_M_length);
+
+ __r->_M_set_length_and_sharable(this->_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)
+ {
+ const size_type __size = this->size();
+ _M_check_length(__size, __n, "basic_string::resize");
+ 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;
+ _M_check_length(__n1, __s.size(), "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>::
+ _M_replace_aux(size_type __pos1, size_type __n1, size_type __n2,
+ _CharT __c)
+ {
+ _M_check_length(__n1, __n2, "basic_string::_M_replace_aux");
+ _M_mutate(__pos1, __n1, __n2);
+ if (__n2)
+ _M_assign(_M_data() + __pos1, __n2, __c);
+ return *this;
+ }
+
+ template<typename _CharT, typename _Traits, typename _Alloc>
+ basic_string<_CharT, _Traits, _Alloc>&
+ basic_string<_CharT, _Traits, _Alloc>::
+ _M_replace_safe(size_type __pos1, size_type __n1, const _CharT* __s,
+ size_type __n2)
+ {
+ _M_mutate(__pos1, __n1, __n2);
+ if (__n2)
+ _M_copy(_M_data() + __pos1, __s, __n2);
+ return *this;
+ }
+
+ 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)
+ _M_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();
+
+ if (__n == 0)
+ return __pos <= __size ? __pos : npos;
+
+ if (__n <= __size)
+ {
+ for (; __pos <= __size - __n; ++__pos)
+ if (traits_type::eq(__data[__pos], __s[0])
+ && traits_type::compare(__data + __pos + 1,
+ __s + 1, __n - 1) == 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 _GLIBCXX_NOEXCEPT
+ {
+ size_type __ret = npos;
+ const size_type __size = this->size();
+ 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 _GLIBCXX_NOEXCEPT
+ {
+ 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 _GLIBCXX_NOEXCEPT
+ {
+ 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 _GLIBCXX_NOEXCEPT
+ {
+ 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 = _S_compare(__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 = _S_compare(__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 = _S_compare(__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 = _S_compare(__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 = _S_compare(__n1, __n2);
+ return __r;
+ }
+
+ // 21.3.7.9 basic_string::getline and operators
+ template<typename _CharT, typename _Traits, typename _Alloc>
+ basic_istream<_CharT, _Traits>&
+ operator>>(basic_istream<_CharT, _Traits>& __in,
+ basic_string<_CharT, _Traits, _Alloc>& __str)
+ {
+ typedef basic_istream<_CharT, _Traits> __istream_type;
+ typedef basic_string<_CharT, _Traits, _Alloc> __string_type;
+ typedef typename __istream_type::ios_base __ios_base;
+ typedef typename __istream_type::int_type __int_type;
+ typedef typename __string_type::size_type __size_type;
+ typedef ctype<_CharT> __ctype_type;
+ typedef typename __ctype_type::ctype_base __ctype_base;
+
+ __size_type __extracted = 0;
+ typename __ios_base::iostate __err = __ios_base::goodbit;
+ typename __istream_type::sentry __cerb(__in, false);
+ if (__cerb)
+ {
+ __try
+ {
+ // Avoid reallocation for common case.
+ __str.erase();
+ _CharT __buf[128];
+ __size_type __len = 0;
+ const streamsize __w = __in.width();
+ const __size_type __n = __w > 0 ? static_cast<__size_type>(__w)
+ : __str.max_size();
+ const __ctype_type& __ct = use_facet<__ctype_type>(__in.getloc());
+ const __int_type __eof = _Traits::eof();
+ __int_type __c = __in.rdbuf()->sgetc();
+
+ while (__extracted < __n
+ && !_Traits::eq_int_type(__c, __eof)
+ && !__ct.is(__ctype_base::space,
+ _Traits::to_char_type(__c)))
+ {
+ if (__len == sizeof(__buf) / sizeof(_CharT))
+ {
+ __str.append(__buf, sizeof(__buf) / sizeof(_CharT));
+ __len = 0;
+ }
+ __buf[__len++] = _Traits::to_char_type(__c);
+ ++__extracted;
+ __c = __in.rdbuf()->snextc();
+ }
+ __str.append(__buf, __len);
+
+ if (_Traits::eq_int_type(__c, __eof))
+ __err |= __ios_base::eofbit;
+ __in.width(0);
+ }
+ __catch(__cxxabiv1::__forced_unwind&)
+ {
+ __in._M_setstate(__ios_base::badbit);
+ __throw_exception_again;
+ }
+ __catch(...)
+ {
+ // _GLIBCXX_RESOLVE_LIB_DEFECTS
+ // 91. Description of operator>> and getline() for string<>
+ // might cause endless loop
+ __in._M_setstate(__ios_base::badbit);
+ }
+ }
+ // 211. operator>>(istream&, string&) doesn't set failbit
+ if (!__extracted)
+ __err |= __ios_base::failbit;
+ if (__err)
+ __in.setstate(__err);
+ return __in;
+ }
+
+ template<typename _CharT, typename _Traits, typename _Alloc>
+ basic_istream<_CharT, _Traits>&
+ getline(basic_istream<_CharT, _Traits>& __in,
+ basic_string<_CharT, _Traits, _Alloc>& __str, _CharT __delim)
+ {
+ typedef basic_istream<_CharT, _Traits> __istream_type;
+ typedef basic_string<_CharT, _Traits, _Alloc> __string_type;
+ typedef typename __istream_type::ios_base __ios_base;
+ typedef typename __istream_type::int_type __int_type;
+ typedef typename __string_type::size_type __size_type;
+
+ __size_type __extracted = 0;
+ const __size_type __n = __str.max_size();
+ typename __ios_base::iostate __err = __ios_base::goodbit;
+ typename __istream_type::sentry __cerb(__in, true);
+ if (__cerb)
+ {
+ __try
+ {
+ __str.erase();
+ const __int_type __idelim = _Traits::to_int_type(__delim);
+ const __int_type __eof = _Traits::eof();
+ __int_type __c = __in.rdbuf()->sgetc();
+
+ while (__extracted < __n
+ && !_Traits::eq_int_type(__c, __eof)
+ && !_Traits::eq_int_type(__c, __idelim))
+ {
+ __str += _Traits::to_char_type(__c);
+ ++__extracted;
+ __c = __in.rdbuf()->snextc();
+ }
+
+ if (_Traits::eq_int_type(__c, __eof))
+ __err |= __ios_base::eofbit;
+ else if (_Traits::eq_int_type(__c, __idelim))
+ {
+ ++__extracted;
+ __in.rdbuf()->sbumpc();
+ }
+ else
+ __err |= __ios_base::failbit;
+ }
+ __catch(__cxxabiv1::__forced_unwind&)
+ {
+ __in._M_setstate(__ios_base::badbit);
+ __throw_exception_again;
+ }
+ __catch(...)
+ {
+ // _GLIBCXX_RESOLVE_LIB_DEFECTS
+ // 91. Description of operator>> and getline() for string<>
+ // might cause endless loop
+ __in._M_setstate(__ios_base::badbit);
+ }
+ }
+ if (!__extracted)
+ __err |= __ios_base::failbit;
+ if (__err)
+ __in.setstate(__err);
+ return __in;
+ }
+
+ // Inhibit implicit instantiations for required instantiations,
+ // which are defined via explicit instantiations elsewhere.
+#if _GLIBCXX_EXTERN_TEMPLATE > 0
+ 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
+
+_GLIBCXX_END_NAMESPACE_VERSION
+} // namespace std
+
+#endif
projects / cross.git / blobdiff