diff options
Diffstat (limited to 'gcc-4.4.3/libstdc++-v3/include/bits/basic_string.tcc')
| -rw-r--r-- | gcc-4.4.3/libstdc++-v3/include/bits/basic_string.tcc | 1144 |
1 files changed, 1144 insertions, 0 deletions
diff --git a/gcc-4.4.3/libstdc++-v3/include/bits/basic_string.tcc b/gcc-4.4.3/libstdc++-v3/include/bits/basic_string.tcc new file mode 100644 index 000000000..a5553c61a --- /dev/null +++ b/gcc-4.4.3/libstdc++-v3/include/bits/basic_string.tcc @@ -0,0 +1,1144 @@ +// Components for manipulating sequences of characters -*- C++ -*- + +// Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, +// 2006, 2007, 2008, 2009 +// 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 basic_string.tcc + * This is an internal header file, included by other library headers. + * You should not attempt to use it directly. + */ + +// +// 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 <cxxabi-forced.h> + +_GLIBCXX_BEGIN_NAMESPACE(std) + + 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) + { +#ifndef _GLIBCXX_FULLY_DYNAMIC_STRING + 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) + { +#ifndef _GLIBCXX_FULLY_DYNAMIC_STRING + if (__beg == __end && __a == _Alloc()) + return _S_empty_rep()._M_refdata(); +#endif + // NB: Not required, but considered best practice. + if (__builtin_expect(__gnu_cxx::__is_null_pointer(__beg) + && __beg != __end, 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_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) + { +#ifndef _GLIBCXX_FULLY_DYNAMIC_STRING + 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> + 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() + { +#ifndef _GLIBCXX_FULLY_DYNAMIC_STRING + 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 + { + 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 + { + 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 = _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. + // NB: This syntax is a GNU extension. +#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 + +#endif |