39 #ifndef _BASIC_STRING_TCC
40 #define _BASIC_STRING_TCC 1
42 #pragma GCC system_header
46 namespace std _GLIBCXX_VISIBILITY(default)
48 _GLIBCXX_BEGIN_NAMESPACE_VERSION
50 #if _GLIBCXX_USE_CXX11_ABI
52 template<
typename _CharT,
typename _Traits,
typename _Alloc>
53 const typename basic_string<_CharT, _Traits, _Alloc>::size_type
54 basic_string<_CharT, _Traits, _Alloc>::npos;
56 template<
typename _CharT,
typename _Traits,
typename _Alloc>
58 basic_string<_CharT, _Traits, _Alloc>::
59 swap(basic_string& __s) _GLIBCXX_NOEXCEPT
64 _Alloc_traits::_S_on_swap(_M_get_allocator(), __s._M_get_allocator());
67 if (__s._M_is_local())
69 if (length() && __s.length())
71 _CharT __tmp_data[_S_local_capacity + 1];
72 traits_type::copy(__tmp_data, __s._M_local_buf,
73 _S_local_capacity + 1);
74 traits_type::copy(__s._M_local_buf, _M_local_buf,
75 _S_local_capacity + 1);
76 traits_type::copy(_M_local_buf, __tmp_data,
77 _S_local_capacity + 1);
79 else if (__s.length())
81 traits_type::copy(_M_local_buf, __s._M_local_buf,
82 _S_local_capacity + 1);
83 _M_length(__s.length());
89 traits_type::copy(__s._M_local_buf, _M_local_buf,
90 _S_local_capacity + 1);
91 __s._M_length(length());
98 const size_type __tmp_capacity = __s._M_allocated_capacity;
99 traits_type::copy(__s._M_local_buf, _M_local_buf,
100 _S_local_capacity + 1);
101 _M_data(__s._M_data());
102 __s._M_data(__s._M_local_buf);
103 _M_capacity(__tmp_capacity);
107 const size_type __tmp_capacity = _M_allocated_capacity;
108 if (__s._M_is_local())
110 traits_type::copy(_M_local_buf, __s._M_local_buf,
111 _S_local_capacity + 1);
112 __s._M_data(_M_data());
113 _M_data(_M_local_buf);
117 pointer __tmp_ptr = _M_data();
118 _M_data(__s._M_data());
119 __s._M_data(__tmp_ptr);
120 _M_capacity(__s._M_allocated_capacity);
122 __s._M_capacity(__tmp_capacity);
125 const size_type __tmp_length = length();
126 _M_length(__s.length());
127 __s._M_length(__tmp_length);
130 template<
typename _CharT,
typename _Traits,
typename _Alloc>
131 typename basic_string<_CharT, _Traits, _Alloc>::pointer
132 basic_string<_CharT, _Traits, _Alloc>::
133 _M_create(size_type& __capacity, size_type __old_capacity)
137 if (__capacity > max_size())
138 std::__throw_length_error(__N(
"basic_string::_M_create"));
143 if (__capacity > __old_capacity && __capacity < 2 * __old_capacity)
145 __capacity = 2 * __old_capacity;
147 if (__capacity > max_size())
148 __capacity = max_size();
153 return _Alloc_traits::allocate(_M_get_allocator(), __capacity + 1);
160 template<
typename _CharT,
typename _Traits,
typename _Alloc>
161 template<
typename _InIterator>
163 basic_string<_CharT, _Traits, _Alloc>::
164 _M_construct(_InIterator __beg, _InIterator __end,
168 size_type __capacity = size_type(_S_local_capacity);
170 while (__beg != __end && __len < __capacity)
172 _M_data()[__len++] = *__beg;
178 while (__beg != __end)
180 if (__len == __capacity)
183 __capacity = __len + 1;
184 pointer __another = _M_create(__capacity, __len);
185 this->_S_copy(__another, _M_data(), __len);
188 _M_capacity(__capacity);
190 _M_data()[__len++] = *__beg;
197 __throw_exception_again;
200 _M_set_length(__len);
203 template<
typename _CharT,
typename _Traits,
typename _Alloc>
204 template<
typename _InIterator>
206 basic_string<_CharT, _Traits, _Alloc>::
207 _M_construct(_InIterator __beg, _InIterator __end,
211 if (__gnu_cxx::__is_null_pointer(__beg) && __beg != __end)
212 std::__throw_logic_error(__N(
"basic_string::"
213 "_M_construct null not valid"));
215 size_type __dnew =
static_cast<size_type
>(
std::distance(__beg, __end));
217 if (__dnew > size_type(_S_local_capacity))
219 _M_data(_M_create(__dnew, size_type(0)));
225 { this->_S_copy_chars(_M_data(), __beg, __end); }
229 __throw_exception_again;
232 _M_set_length(__dnew);
235 template<
typename _CharT,
typename _Traits,
typename _Alloc>
237 basic_string<_CharT, _Traits, _Alloc>::
238 _M_construct(size_type __n, _CharT __c)
240 if (__n > size_type(_S_local_capacity))
242 _M_data(_M_create(__n, size_type(0)));
247 this->_S_assign(_M_data(), __n, __c);
252 template<
typename _CharT,
typename _Traits,
typename _Alloc>
254 basic_string<_CharT, _Traits, _Alloc>::
255 _M_assign(
const basic_string& __str)
259 const size_type __rsize = __str.length();
260 const size_type __capacity = capacity();
262 if (__rsize > __capacity)
264 size_type __new_capacity = __rsize;
265 pointer __tmp = _M_create(__new_capacity, __capacity);
268 _M_capacity(__new_capacity);
272 this->_S_copy(_M_data(), __str._M_data(), __rsize);
274 _M_set_length(__rsize);
278 template<
typename _CharT,
typename _Traits,
typename _Alloc>
284 if (__res < length())
287 const size_type __capacity = capacity();
288 if (__res != __capacity)
290 if (__res > __capacity
291 || __res > size_type(_S_local_capacity))
293 pointer __tmp = _M_create(__res, __capacity);
294 this->_S_copy(__tmp, _M_data(), length() + 1);
299 else if (!_M_is_local())
301 this->_S_copy(_M_local_data(), _M_data(), length() + 1);
302 _M_destroy(__capacity);
303 _M_data(_M_local_data());
308 template<
typename _CharT,
typename _Traits,
typename _Alloc>
310 basic_string<_CharT, _Traits, _Alloc>::
311 _M_mutate(size_type __pos, size_type __len1,
const _CharT* __s,
314 const size_type __how_much = length() - __pos - __len1;
316 size_type __new_capacity = length() + __len2 - __len1;
317 pointer __r = _M_create(__new_capacity, capacity());
320 this->_S_copy(__r, _M_data(), __pos);
322 this->_S_copy(__r + __pos, __s, __len2);
324 this->_S_copy(__r + __pos + __len2,
325 _M_data() + __pos + __len1, __how_much);
329 _M_capacity(__new_capacity);
332 template<
typename _CharT,
typename _Traits,
typename _Alloc>
334 basic_string<_CharT, _Traits, _Alloc>::
335 _M_erase(size_type __pos, size_type __n)
337 const size_type __how_much = length() - __pos - __n;
339 if (__how_much && __n)
340 this->_S_move(_M_data() + __pos, _M_data() + __pos + __n, __how_much);
342 _M_set_length(length() - __n);
345 template<
typename _CharT,
typename _Traits,
typename _Alloc>
348 resize(size_type __n, _CharT __c)
350 const size_type __size = this->size();
352 this->append(__n - __size, __c);
353 else if (__n < __size)
354 this->_M_set_length(__n);
357 template<
typename _CharT,
typename _Traits,
typename _Alloc>
358 basic_string<_CharT, _Traits, _Alloc>&
359 basic_string<_CharT, _Traits, _Alloc>::
360 _M_append(
const _CharT* __s, size_type __n)
362 const size_type __len = __n + this->size();
364 if (__len <= this->capacity())
367 this->_S_copy(this->_M_data() + this->size(), __s, __n);
370 this->_M_mutate(this->size(), size_type(0), __s, __n);
372 this->_M_set_length(__len);
376 template<
typename _CharT,
typename _Traits,
typename _Alloc>
377 template<
typename _InputIterator>
378 basic_string<_CharT, _Traits, _Alloc>&
379 basic_string<_CharT, _Traits, _Alloc>::
380 _M_replace_dispatch(const_iterator __i1, const_iterator __i2,
381 _InputIterator __k1, _InputIterator __k2,
386 const basic_string __s(__k1, __k2, this->get_allocator());
387 const size_type __n1 = __i2 - __i1;
388 return _M_replace(__i1 -
begin(), __n1, __s._M_data(),
392 template<
typename _CharT,
typename _Traits,
typename _Alloc>
393 basic_string<_CharT, _Traits, _Alloc>&
394 basic_string<_CharT, _Traits, _Alloc>::
395 _M_replace_aux(size_type __pos1, size_type __n1, size_type __n2,
398 _M_check_length(__n1, __n2,
"basic_string::_M_replace_aux");
400 const size_type __old_size = this->size();
401 const size_type __new_size = __old_size + __n2 - __n1;
403 if (__new_size <= this->capacity())
405 pointer __p = this->_M_data() + __pos1;
407 const size_type __how_much = __old_size - __pos1 - __n1;
408 if (__how_much && __n1 != __n2)
409 this->_S_move(__p + __n2, __p + __n1, __how_much);
412 this->_M_mutate(__pos1, __n1, 0, __n2);
415 this->_S_assign(this->_M_data() + __pos1, __n2, __c);
417 this->_M_set_length(__new_size);
421 template<
typename _CharT,
typename _Traits,
typename _Alloc>
422 basic_string<_CharT, _Traits, _Alloc>&
423 basic_string<_CharT, _Traits, _Alloc>::
424 _M_replace(size_type __pos, size_type __len1,
const _CharT* __s,
425 const size_type __len2)
427 _M_check_length(__len1, __len2,
"basic_string::_M_replace");
429 const size_type __old_size = this->size();
430 const size_type __new_size = __old_size + __len2 - __len1;
432 if (__new_size <= this->capacity())
434 pointer __p = this->_M_data() + __pos;
436 const size_type __how_much = __old_size - __pos - __len1;
437 if (_M_disjunct(__s))
439 if (__how_much && __len1 != __len2)
440 this->_S_move(__p + __len2, __p + __len1, __how_much);
442 this->_S_copy(__p, __s, __len2);
447 if (__len2 && __len2 <= __len1)
448 this->_S_move(__p, __s, __len2);
449 if (__how_much && __len1 != __len2)
450 this->_S_move(__p + __len2, __p + __len1, __how_much);
453 if (__s + __len2 <= __p + __len1)
454 this->_S_move(__p, __s, __len2);
455 else if (__s >= __p + __len1)
456 this->_S_copy(__p, __s + __len2 - __len1, __len2);
459 const size_type __nleft = (__p + __len1) - __s;
460 this->_S_move(__p, __s, __nleft);
461 this->_S_copy(__p + __nleft, __p + __len2,
468 this->_M_mutate(__pos, __len1, __s, __len2);
470 this->_M_set_length(__new_size);
474 template<
typename _CharT,
typename _Traits,
typename _Alloc>
475 typename basic_string<_CharT, _Traits, _Alloc>::size_type
477 copy(_CharT* __s, size_type __n, size_type __pos)
const
479 _M_check(__pos,
"basic_string::copy");
480 __n = _M_limit(__pos, __n);
481 __glibcxx_requires_string_len(__s, __n);
483 _S_copy(__s, _M_data() + __pos, __n);
488 #else // !_GLIBCXX_USE_CXX11_ABI
490 template<
typename _CharT,
typename _Traits,
typename _Alloc>
491 const typename basic_string<_CharT, _Traits, _Alloc>::size_type
492 basic_string<_CharT, _Traits, _Alloc>::
493 _Rep::_S_max_size = (((npos -
sizeof(_Rep_base))/
sizeof(_CharT)) - 1) / 4;
495 template<
typename _CharT,
typename _Traits,
typename _Alloc>
497 basic_string<_CharT, _Traits, _Alloc>::
498 _Rep::_S_terminal = _CharT();
500 template<
typename _CharT,
typename _Traits,
typename _Alloc>
501 const typename basic_string<_CharT, _Traits, _Alloc>::size_type
502 basic_string<_CharT, _Traits, _Alloc>::npos;
506 template<
typename _CharT,
typename _Traits,
typename _Alloc>
507 typename basic_string<_CharT, _Traits, _Alloc>::size_type
508 basic_string<_CharT, _Traits, _Alloc>::_Rep::_S_empty_rep_storage[
509 (
sizeof(_Rep_base) +
sizeof(_CharT) +
sizeof(size_type) - 1) /
516 template<
typename _CharT,
typename _Traits,
typename _Alloc>
517 template<
typename _InIterator>
519 basic_string<_CharT, _Traits, _Alloc>::
520 _S_construct(_InIterator __beg, _InIterator __end,
const _Alloc& __a,
523 #if _GLIBCXX_FULLY_DYNAMIC_STRING == 0
524 if (__beg == __end && __a == _Alloc())
525 return _S_empty_rep()._M_refdata();
530 while (__beg != __end && __len <
sizeof(__buf) /
sizeof(_CharT))
532 __buf[__len++] = *__beg;
535 _Rep* __r = _Rep::_S_create(__len, size_type(0), __a);
536 _M_copy(__r->_M_refdata(), __buf, __len);
539 while (__beg != __end)
541 if (__len == __r->_M_capacity)
544 _Rep* __another = _Rep::_S_create(__len + 1, __len, __a);
545 _M_copy(__another->_M_refdata(), __r->_M_refdata(), __len);
546 __r->_M_destroy(__a);
549 __r->_M_refdata()[__len++] = *__beg;
555 __r->_M_destroy(__a);
556 __throw_exception_again;
558 __r->_M_set_length_and_sharable(__len);
559 return __r->_M_refdata();
562 template<
typename _CharT,
typename _Traits,
typename _Alloc>
563 template <
typename _InIterator>
565 basic_string<_CharT, _Traits, _Alloc>::
566 _S_construct(_InIterator __beg, _InIterator __end,
const _Alloc& __a,
567 forward_iterator_tag)
569 #if _GLIBCXX_FULLY_DYNAMIC_STRING == 0
570 if (__beg == __end && __a == _Alloc())
571 return _S_empty_rep()._M_refdata();
574 if (__gnu_cxx::__is_null_pointer(__beg) && __beg != __end)
575 __throw_logic_error(__N(
"basic_string::_S_construct null not valid"));
577 const size_type __dnew =
static_cast<size_type
>(
std::distance(__beg,
580 _Rep* __r = _Rep::_S_create(__dnew, size_type(0), __a);
582 { _S_copy_chars(__r->_M_refdata(), __beg, __end); }
585 __r->_M_destroy(__a);
586 __throw_exception_again;
588 __r->_M_set_length_and_sharable(__dnew);
589 return __r->_M_refdata();
592 template<
typename _CharT,
typename _Traits,
typename _Alloc>
594 basic_string<_CharT, _Traits, _Alloc>::
595 _S_construct(size_type __n, _CharT __c,
const _Alloc& __a)
597 #if _GLIBCXX_FULLY_DYNAMIC_STRING == 0
598 if (__n == 0 && __a == _Alloc())
599 return _S_empty_rep()._M_refdata();
602 _Rep* __r = _Rep::_S_create(__n, size_type(0), __a);
604 _M_assign(__r->_M_refdata(), __n, __c);
606 __r->_M_set_length_and_sharable(__n);
607 return __r->_M_refdata();
610 template<
typename _CharT,
typename _Traits,
typename _Alloc>
613 : _M_dataplus(__str._M_rep()->_M_grab(_Alloc(__str.get_allocator()),
614 __str.get_allocator()),
615 __str.get_allocator())
618 template<
typename _CharT,
typename _Traits,
typename _Alloc>
621 : _M_dataplus(_S_construct(size_type(), _CharT(), __a), __a)
624 template<
typename _CharT,
typename _Traits,
typename _Alloc>
627 : _M_dataplus(_S_construct(__str._M_data()
628 + __str._M_check(__pos,
629 "basic_string::basic_string"),
630 __str._M_data() + __str._M_limit(__pos, npos)
634 template<
typename _CharT,
typename _Traits,
typename _Alloc>
637 : _M_dataplus(_S_construct(__str._M_data()
638 + __str._M_check(__pos,
639 "basic_string::basic_string"),
640 __str._M_data() + __str._M_limit(__pos, __n)
641 + __pos, _Alloc()), _Alloc())
644 template<
typename _CharT,
typename _Traits,
typename _Alloc>
647 size_type __n,
const _Alloc& __a)
648 : _M_dataplus(_S_construct(__str._M_data()
649 + __str._M_check(__pos,
650 "basic_string::basic_string"),
651 __str._M_data() + __str._M_limit(__pos, __n)
656 template<
typename _CharT,
typename _Traits,
typename _Alloc>
659 : _M_dataplus(_S_construct(__s, __s + __n, __a), __a)
662 template<
typename _CharT,
typename _Traits,
typename _Alloc>
665 : _M_dataplus(_S_construct(__n, __c, __a), __a)
669 template<
typename _CharT,
typename _Traits,
typename _Alloc>
670 template<
typename _InputIterator>
672 basic_string(_InputIterator __beg, _InputIterator __end,
const _Alloc& __a)
673 : _M_dataplus(_S_construct(__beg, __end, __a), __a)
676 #if __cplusplus >= 201103L
677 template<
typename _CharT,
typename _Traits,
typename _Alloc>
680 : _M_dataplus(_S_construct(__l.
begin(), __l.
end(), __a), __a)
684 template<
typename _CharT,
typename _Traits,
typename _Alloc>
689 if (_M_rep() != __str._M_rep())
692 const allocator_type __a = this->get_allocator();
693 _CharT* __tmp = __str._M_rep()->_M_grab(__a, __str.
get_allocator());
694 _M_rep()->_M_dispose(__a);
700 template<
typename _CharT,
typename _Traits,
typename _Alloc>
705 __glibcxx_requires_string_len(__s, __n);
706 _M_check_length(this->size(), __n,
"basic_string::assign");
707 if (_M_disjunct(__s) || _M_rep()->_M_is_shared())
708 return _M_replace_safe(size_type(0), this->size(), __s, __n);
712 const size_type __pos = __s - _M_data();
714 _M_copy(_M_data(), __s, __n);
716 _M_move(_M_data(), __s, __n);
717 _M_rep()->_M_set_length_and_sharable(__n);
722 template<
typename _CharT,
typename _Traits,
typename _Alloc>
729 _M_check_length(size_type(0), __n,
"basic_string::append");
730 const size_type __len = __n + this->size();
731 if (__len > this->capacity() || _M_rep()->_M_is_shared())
732 this->reserve(__len);
733 _M_assign(_M_data() + this->size(), __n, __c);
734 _M_rep()->_M_set_length_and_sharable(__len);
739 template<
typename _CharT,
typename _Traits,
typename _Alloc>
744 __glibcxx_requires_string_len(__s, __n);
747 _M_check_length(size_type(0), __n,
"basic_string::append");
748 const size_type __len = __n + this->size();
749 if (__len > this->capacity() || _M_rep()->_M_is_shared())
751 if (_M_disjunct(__s))
752 this->reserve(__len);
755 const size_type __off = __s - _M_data();
756 this->reserve(__len);
757 __s = _M_data() + __off;
760 _M_copy(_M_data() + this->size(), __s, __n);
761 _M_rep()->_M_set_length_and_sharable(__len);
766 template<
typename _CharT,
typename _Traits,
typename _Alloc>
771 const size_type __size = __str.
size();
774 const size_type __len = __size + this->size();
775 if (__len > this->capacity() || _M_rep()->_M_is_shared())
776 this->reserve(__len);
777 _M_copy(_M_data() + this->size(), __str._M_data(), __size);
778 _M_rep()->_M_set_length_and_sharable(__len);
783 template<
typename _CharT,
typename _Traits,
typename _Alloc>
788 __str._M_check(__pos,
"basic_string::append");
789 __n = __str._M_limit(__pos, __n);
792 const size_type __len = __n + this->size();
793 if (__len > this->capacity() || _M_rep()->_M_is_shared())
794 this->reserve(__len);
795 _M_copy(_M_data() + this->size(), __str._M_data() + __pos, __n);
796 _M_rep()->_M_set_length_and_sharable(__len);
801 template<
typename _CharT,
typename _Traits,
typename _Alloc>
804 insert(size_type __pos,
const _CharT* __s, size_type __n)
806 __glibcxx_requires_string_len(__s, __n);
807 _M_check(__pos,
"basic_string::insert");
808 _M_check_length(size_type(0), __n,
"basic_string::insert");
809 if (_M_disjunct(__s) || _M_rep()->_M_is_shared())
810 return _M_replace_safe(__pos, size_type(0), __s, __n);
814 const size_type __off = __s - _M_data();
815 _M_mutate(__pos, 0, __n);
816 __s = _M_data() + __off;
817 _CharT* __p = _M_data() + __pos;
818 if (__s + __n <= __p)
819 _M_copy(__p, __s, __n);
821 _M_copy(__p, __s + __n, __n);
824 const size_type __nleft = __p - __s;
825 _M_copy(__p, __s, __nleft);
826 _M_copy(__p + __nleft, __p + __n, __n - __nleft);
832 template<
typename _CharT,
typename _Traits,
typename _Alloc>
833 typename basic_string<_CharT, _Traits, _Alloc>::iterator
835 erase(iterator __first, iterator __last)
837 _GLIBCXX_DEBUG_PEDASSERT(__first >= _M_ibegin() && __first <= __last
838 && __last <= _M_iend());
843 const size_type __size = __last - __first;
846 const size_type __pos = __first - _M_ibegin();
847 _M_mutate(__pos, __size, size_type(0));
848 _M_rep()->_M_set_leaked();
849 return iterator(_M_data() + __pos);
855 template<
typename _CharT,
typename _Traits,
typename _Alloc>
858 replace(size_type __pos, size_type __n1,
const _CharT* __s,
861 __glibcxx_requires_string_len(__s, __n2);
862 _M_check(__pos,
"basic_string::replace");
863 __n1 = _M_limit(__pos, __n1);
864 _M_check_length(__n1, __n2,
"basic_string::replace");
866 if (_M_disjunct(__s) || _M_rep()->_M_is_shared())
867 return _M_replace_safe(__pos, __n1, __s, __n2);
868 else if ((__left = __s + __n2 <= _M_data() + __pos)
869 || _M_data() + __pos + __n1 <= __s)
872 size_type __off = __s - _M_data();
873 __left ? __off : (__off += __n2 - __n1);
874 _M_mutate(__pos, __n1, __n2);
875 _M_copy(_M_data() + __pos, _M_data() + __off, __n2);
882 return _M_replace_safe(__pos, __n1, __tmp._M_data(), __n2);
886 template<
typename _CharT,
typename _Traits,
typename _Alloc>
891 const size_type __size =
sizeof(_Rep_base) +
892 (this->_M_capacity + 1) *
sizeof(_CharT);
893 _Raw_bytes_alloc(__a).deallocate(reinterpret_cast<char*>(
this), __size);
896 template<
typename _CharT,
typename _Traits,
typename _Alloc>
898 basic_string<_CharT, _Traits, _Alloc>::
901 #if _GLIBCXX_FULLY_DYNAMIC_STRING == 0
902 if (_M_rep() == &_S_empty_rep())
905 if (_M_rep()->_M_is_shared())
907 _M_rep()->_M_set_leaked();
910 template<
typename _CharT,
typename _Traits,
typename _Alloc>
912 basic_string<_CharT, _Traits, _Alloc>::
913 _M_mutate(size_type __pos, size_type __len1, size_type __len2)
915 const size_type __old_size = this->size();
916 const size_type __new_size = __old_size + __len2 - __len1;
917 const size_type __how_much = __old_size - __pos - __len1;
919 if (__new_size > this->capacity() || _M_rep()->_M_is_shared())
922 const allocator_type __a = get_allocator();
923 _Rep* __r = _Rep::_S_create(__new_size, this->capacity(), __a);
926 _M_copy(__r->_M_refdata(), _M_data(), __pos);
928 _M_copy(__r->_M_refdata() + __pos + __len2,
929 _M_data() + __pos + __len1, __how_much);
931 _M_rep()->_M_dispose(__a);
932 _M_data(__r->_M_refdata());
934 else if (__how_much && __len1 != __len2)
937 _M_move(_M_data() + __pos + __len2,
938 _M_data() + __pos + __len1, __how_much);
940 _M_rep()->_M_set_length_and_sharable(__new_size);
943 template<
typename _CharT,
typename _Traits,
typename _Alloc>
948 if (__res != this->capacity() || _M_rep()->_M_is_shared())
951 if (__res < this->size())
952 __res = this->size();
953 const allocator_type __a = get_allocator();
954 _CharT* __tmp = _M_rep()->_M_clone(__a, __res - this->size());
955 _M_rep()->_M_dispose(__a);
960 template<
typename _CharT,
typename _Traits,
typename _Alloc>
966 if (_M_rep()->_M_is_leaked())
967 _M_rep()->_M_set_sharable();
968 if (__s._M_rep()->_M_is_leaked())
969 __s._M_rep()->_M_set_sharable();
970 if (this->get_allocator() == __s.get_allocator())
972 _CharT* __tmp = _M_data();
973 _M_data(__s._M_data());
979 const basic_string __tmp1(_M_ibegin(), _M_iend(),
980 __s.get_allocator());
981 const basic_string __tmp2(__s._M_ibegin(), __s._M_iend(),
982 this->get_allocator());
988 template<
typename _CharT,
typename _Traits,
typename _Alloc>
989 typename basic_string<_CharT, _Traits, _Alloc>::_Rep*
990 basic_string<_CharT, _Traits, _Alloc>::_Rep::
991 _S_create(size_type __capacity, size_type __old_capacity,
992 const _Alloc& __alloc)
996 if (__capacity > _S_max_size)
997 __throw_length_error(__N(
"basic_string::_S_create"));
1022 const size_type __pagesize = 4096;
1023 const size_type __malloc_header_size = 4 *
sizeof(
void*);
1031 if (__capacity > __old_capacity && __capacity < 2 * __old_capacity)
1032 __capacity = 2 * __old_capacity;
1037 size_type __size = (__capacity + 1) *
sizeof(_CharT) +
sizeof(_Rep);
1039 const size_type __adj_size = __size + __malloc_header_size;
1040 if (__adj_size > __pagesize && __capacity > __old_capacity)
1042 const size_type __extra = __pagesize - __adj_size % __pagesize;
1043 __capacity += __extra /
sizeof(_CharT);
1045 if (__capacity > _S_max_size)
1046 __capacity = _S_max_size;
1047 __size = (__capacity + 1) *
sizeof(_CharT) +
sizeof(_Rep);
1052 void* __place = _Raw_bytes_alloc(__alloc).allocate(__size);
1053 _Rep *__p =
new (__place) _Rep;
1054 __p->_M_capacity = __capacity;
1062 __p->_M_set_sharable();
1066 template<
typename _CharT,
typename _Traits,
typename _Alloc>
1068 basic_string<_CharT, _Traits, _Alloc>::_Rep::
1069 _M_clone(
const _Alloc& __alloc, size_type __res)
1072 const size_type __requested_cap = this->_M_length + __res;
1073 _Rep* __r = _Rep::_S_create(__requested_cap, this->_M_capacity,
1075 if (this->_M_length)
1076 _M_copy(__r->_M_refdata(), _M_refdata(), this->_M_length);
1078 __r->_M_set_length_and_sharable(this->_M_length);
1079 return __r->_M_refdata();
1082 template<
typename _CharT,
typename _Traits,
typename _Alloc>
1087 const size_type __size = this->size();
1088 _M_check_length(__size, __n,
"basic_string::resize");
1090 this->append(__n - __size, __c);
1091 else if (__n < __size)
1096 template<
typename _CharT,
typename _Traits,
typename _Alloc>
1097 template<
typename _InputIterator>
1101 _InputIterator __k2, __false_type)
1104 const size_type __n1 = __i2 - __i1;
1105 _M_check_length(__n1, __s.size(),
"basic_string::_M_replace_dispatch");
1106 return _M_replace_safe(__i1 - _M_ibegin(), __n1, __s._M_data(),
1110 template<
typename _CharT,
typename _Traits,
typename _Alloc>
1111 basic_string<_CharT, _Traits, _Alloc>&
1112 basic_string<_CharT, _Traits, _Alloc>::
1113 _M_replace_aux(size_type __pos1, size_type __n1, size_type __n2,
1116 _M_check_length(__n1, __n2,
"basic_string::_M_replace_aux");
1117 _M_mutate(__pos1, __n1, __n2);
1119 _M_assign(_M_data() + __pos1, __n2, __c);
1123 template<
typename _CharT,
typename _Traits,
typename _Alloc>
1124 basic_string<_CharT, _Traits, _Alloc>&
1125 basic_string<_CharT, _Traits, _Alloc>::
1126 _M_replace_safe(size_type __pos1, size_type __n1,
const _CharT* __s,
1129 _M_mutate(__pos1, __n1, __n2);
1131 _M_copy(_M_data() + __pos1, __s, __n2);
1135 template<
typename _CharT,
typename _Traits,
typename _Alloc>
1136 typename basic_string<_CharT, _Traits, _Alloc>::size_type
1138 copy(_CharT* __s, size_type __n, size_type __pos)
const
1140 _M_check(__pos,
"basic_string::copy");
1141 __n = _M_limit(__pos, __n);
1142 __glibcxx_requires_string_len(__s, __n);
1144 _M_copy(__s, _M_data() + __pos, __n);
1148 #endif // !_GLIBCXX_USE_CXX11_ABI
1150 template<
typename _CharT,
typename _Traits,
typename _Alloc>
1155 __glibcxx_requires_string(__lhs);
1157 typedef typename __string_type::size_type __size_type;
1159 rebind<_CharT>::other _Char_alloc_type;
1161 const __size_type __len = _Traits::length(__lhs);
1162 __string_type __str(_Alloc_traits::_S_select_on_copy(
1164 __str.reserve(__len + __rhs.
size());
1165 __str.append(__lhs, __len);
1166 __str.append(__rhs);
1170 template<
typename _CharT,
typename _Traits,
typename _Alloc>
1171 basic_string<_CharT, _Traits, _Alloc>
1175 typedef typename __string_type::size_type __size_type;
1177 rebind<_CharT>::other _Char_alloc_type;
1179 __string_type __str(_Alloc_traits::_S_select_on_copy(
1181 const __size_type __len = __rhs.
size();
1182 __str.reserve(__len + 1);
1183 __str.append(__size_type(1), __lhs);
1184 __str.append(__rhs);
1188 template<
typename _CharT,
typename _Traits,
typename _Alloc>
1189 typename basic_string<_CharT, _Traits, _Alloc>::size_type
1191 find(
const _CharT* __s, size_type __pos, size_type __n)
const
1194 __glibcxx_requires_string_len(__s, __n);
1195 const size_type __size = this->size();
1198 return __pos <= __size ? __pos : npos;
1199 if (__pos >= __size)
1202 const _CharT __elem0 = __s[0];
1203 const _CharT*
const __data = data();
1204 const _CharT* __first = __data + __pos;
1205 const _CharT*
const __last = __data + __size;
1206 size_type __len = __size - __pos;
1208 while (__len >= __n)
1211 __first = traits_type::find(__first, __len - __n + 1, __elem0);
1217 if (traits_type::compare(__first, __s, __n) == 0)
1218 return __first - __data;
1219 __len = __last - ++__first;
1224 template<
typename _CharT,
typename _Traits,
typename _Alloc>
1225 typename basic_string<_CharT, _Traits, _Alloc>::size_type
1227 find(_CharT __c, size_type __pos)
const _GLIBCXX_NOEXCEPT
1229 size_type __ret = npos;
1230 const size_type __size = this->size();
1233 const _CharT* __data = _M_data();
1234 const size_type __n = __size - __pos;
1235 const _CharT* __p = traits_type::find(__data + __pos, __n, __c);
1237 __ret = __p - __data;
1242 template<
typename _CharT,
typename _Traits,
typename _Alloc>
1243 typename basic_string<_CharT, _Traits, _Alloc>::size_type
1245 rfind(
const _CharT* __s, size_type __pos, size_type __n)
const
1248 __glibcxx_requires_string_len(__s, __n);
1249 const size_type __size = this->size();
1252 __pos =
std::min(size_type(__size - __n), __pos);
1253 const _CharT* __data = _M_data();
1256 if (traits_type::compare(__data + __pos, __s, __n) == 0)
1259 while (__pos-- > 0);
1264 template<
typename _CharT,
typename _Traits,
typename _Alloc>
1265 typename basic_string<_CharT, _Traits, _Alloc>::size_type
1267 rfind(_CharT __c, size_type __pos)
const _GLIBCXX_NOEXCEPT
1269 size_type __size = this->size();
1272 if (--__size > __pos)
1274 for (++__size; __size-- > 0; )
1275 if (traits_type::eq(_M_data()[__size], __c))
1281 template<
typename _CharT,
typename _Traits,
typename _Alloc>
1282 typename basic_string<_CharT, _Traits, _Alloc>::size_type
1287 __glibcxx_requires_string_len(__s, __n);
1288 for (; __n && __pos < this->size(); ++__pos)
1290 const _CharT* __p = traits_type::find(__s, __n, _M_data()[__pos]);
1297 template<
typename _CharT,
typename _Traits,
typename _Alloc>
1298 typename basic_string<_CharT, _Traits, _Alloc>::size_type
1303 __glibcxx_requires_string_len(__s, __n);
1304 size_type __size = this->size();
1307 if (--__size > __pos)
1311 if (traits_type::find(__s, __n, _M_data()[__size]))
1314 while (__size-- != 0);
1319 template<
typename _CharT,
typename _Traits,
typename _Alloc>
1320 typename basic_string<_CharT, _Traits, _Alloc>::size_type
1325 __glibcxx_requires_string_len(__s, __n);
1326 for (; __pos < this->size(); ++__pos)
1327 if (!traits_type::find(__s, __n, _M_data()[__pos]))
1332 template<
typename _CharT,
typename _Traits,
typename _Alloc>
1333 typename basic_string<_CharT, _Traits, _Alloc>::size_type
1337 for (; __pos < this->size(); ++__pos)
1338 if (!traits_type::eq(_M_data()[__pos], __c))
1343 template<
typename _CharT,
typename _Traits,
typename _Alloc>
1344 typename basic_string<_CharT, _Traits, _Alloc>::size_type
1349 __glibcxx_requires_string_len(__s, __n);
1350 size_type __size = this->size();
1353 if (--__size > __pos)
1357 if (!traits_type::find(__s, __n, _M_data()[__size]))
1365 template<
typename _CharT,
typename _Traits,
typename _Alloc>
1366 typename basic_string<_CharT, _Traits, _Alloc>::size_type
1370 size_type __size = this->size();
1373 if (--__size > __pos)
1377 if (!traits_type::eq(_M_data()[__size], __c))
1385 template<
typename _CharT,
typename _Traits,
typename _Alloc>
1390 _M_check(__pos,
"basic_string::compare");
1391 __n = _M_limit(__pos, __n);
1392 const size_type __osize = __str.
size();
1393 const size_type __len =
std::min(__n, __osize);
1394 int __r = traits_type::compare(_M_data() + __pos, __str.
data(), __len);
1396 __r = _S_compare(__n, __osize);
1400 template<
typename _CharT,
typename _Traits,
typename _Alloc>
1404 size_type __pos2, size_type __n2)
const
1406 _M_check(__pos1,
"basic_string::compare");
1407 __str._M_check(__pos2,
"basic_string::compare");
1408 __n1 = _M_limit(__pos1, __n1);
1409 __n2 = __str._M_limit(__pos2, __n2);
1410 const size_type __len =
std::min(__n1, __n2);
1411 int __r = traits_type::compare(_M_data() + __pos1,
1412 __str.
data() + __pos2, __len);
1414 __r = _S_compare(__n1, __n2);
1418 template<
typename _CharT,
typename _Traits,
typename _Alloc>
1421 compare(
const _CharT* __s)
const _GLIBCXX_NOEXCEPT
1423 __glibcxx_requires_string(__s);
1424 const size_type __size = this->size();
1425 const size_type __osize = traits_type::length(__s);
1426 const size_type __len =
std::min(__size, __osize);
1427 int __r = traits_type::compare(_M_data(), __s, __len);
1429 __r = _S_compare(__size, __osize);
1433 template<
typename _CharT,
typename _Traits,
typename _Alloc>
1436 compare(size_type __pos, size_type __n1,
const _CharT* __s)
const
1438 __glibcxx_requires_string(__s);
1439 _M_check(__pos,
"basic_string::compare");
1440 __n1 = _M_limit(__pos, __n1);
1441 const size_type __osize = traits_type::length(__s);
1442 const size_type __len =
std::min(__n1, __osize);
1443 int __r = traits_type::compare(_M_data() + __pos, __s, __len);
1445 __r = _S_compare(__n1, __osize);
1449 template<
typename _CharT,
typename _Traits,
typename _Alloc>
1452 compare(size_type __pos, size_type __n1,
const _CharT* __s,
1453 size_type __n2)
const
1455 __glibcxx_requires_string_len(__s, __n2);
1456 _M_check(__pos,
"basic_string::compare");
1457 __n1 = _M_limit(__pos, __n1);
1458 const size_type __len =
std::min(__n1, __n2);
1459 int __r = traits_type::compare(_M_data() + __pos, __s, __len);
1461 __r = _S_compare(__n1, __n2);
1466 template<
typename _CharT,
typename _Traits,
typename _Alloc>
1473 typedef typename __istream_type::ios_base __ios_base;
1474 typedef typename __istream_type::int_type __int_type;
1475 typedef typename __string_type::size_type __size_type;
1477 typedef typename __ctype_type::ctype_base __ctype_base;
1479 __size_type __extracted = 0;
1480 typename __ios_base::iostate __err = __ios_base::goodbit;
1481 typename __istream_type::sentry __cerb(__in,
false);
1489 __size_type __len = 0;
1491 const __size_type __n = __w > 0 ?
static_cast<__size_type
>(__w)
1493 const __ctype_type& __ct = use_facet<__ctype_type>(__in.
getloc());
1494 const __int_type __eof = _Traits::eof();
1495 __int_type __c = __in.
rdbuf()->sgetc();
1497 while (__extracted < __n
1498 && !_Traits::eq_int_type(__c, __eof)
1499 && !__ct.is(__ctype_base::space,
1500 _Traits::to_char_type(__c)))
1502 if (__len ==
sizeof(__buf) /
sizeof(_CharT))
1504 __str.
append(__buf,
sizeof(__buf) /
sizeof(_CharT));
1507 __buf[__len++] = _Traits::to_char_type(__c);
1509 __c = __in.
rdbuf()->snextc();
1511 __str.
append(__buf, __len);
1513 if (_Traits::eq_int_type(__c, __eof))
1514 __err |= __ios_base::eofbit;
1519 __in._M_setstate(__ios_base::badbit);
1520 __throw_exception_again;
1527 __in._M_setstate(__ios_base::badbit);
1532 __err |= __ios_base::failbit;
1538 template<
typename _CharT,
typename _Traits,
typename _Alloc>
1539 basic_istream<_CharT, _Traits>&
1545 typedef typename __istream_type::ios_base __ios_base;
1546 typedef typename __istream_type::int_type __int_type;
1547 typedef typename __string_type::size_type __size_type;
1549 __size_type __extracted = 0;
1550 const __size_type __n = __str.
max_size();
1551 typename __ios_base::iostate __err = __ios_base::goodbit;
1552 typename __istream_type::sentry __cerb(__in,
true);
1558 const __int_type __idelim = _Traits::to_int_type(__delim);
1559 const __int_type __eof = _Traits::eof();
1560 __int_type __c = __in.
rdbuf()->sgetc();
1562 while (__extracted < __n
1563 && !_Traits::eq_int_type(__c, __eof)
1564 && !_Traits::eq_int_type(__c, __idelim))
1566 __str += _Traits::to_char_type(__c);
1568 __c = __in.
rdbuf()->snextc();
1571 if (_Traits::eq_int_type(__c, __eof))
1572 __err |= __ios_base::eofbit;
1573 else if (_Traits::eq_int_type(__c, __idelim))
1576 __in.
rdbuf()->sbumpc();
1579 __err |= __ios_base::failbit;
1583 __in._M_setstate(__ios_base::badbit);
1584 __throw_exception_again;
1591 __in._M_setstate(__ios_base::badbit);
1595 __err |= __ios_base::failbit;
1603 #if _GLIBCXX_EXTERN_TEMPLATE
1609 # if __cplusplus <= 201703L && _GLIBCXX_EXTERN_TEMPLATE > 0
1610 extern template class basic_string<char>;
1611 # elif ! _GLIBCXX_USE_CXX11_ABI
1614 extern template basic_string<char>::size_type
1615 basic_string<char>::_Rep::_S_empty_rep_storage[];
1619 basic_istream<char>&
1622 basic_ostream<char>&
1623 operator<<(basic_ostream<char>&,
const string&);
1625 basic_istream<char>&
1626 getline(basic_istream<char>&,
string&,
char);
1628 basic_istream<char>&
1629 getline(basic_istream<char>&,
string&);
1631 #ifdef _GLIBCXX_USE_WCHAR_T
1632 # if __cplusplus <= 201703L && _GLIBCXX_EXTERN_TEMPLATE > 0
1633 extern template class basic_string<wchar_t>;
1634 # elif ! _GLIBCXX_USE_CXX11_ABI
1635 extern template basic_string<wchar_t>::size_type
1636 basic_string<wchar_t>::_Rep::_S_empty_rep_storage[];
1640 basic_istream<wchar_t>&
1643 basic_ostream<wchar_t>&
1644 operator<<(basic_ostream<wchar_t>&,
const wstring&);
1646 basic_istream<wchar_t>&
1649 basic_istream<wchar_t>&
1651 #endif // _GLIBCXX_USE_WCHAR_T
1652 #endif // _GLIBCXX_EXTERN_TEMPLATE
1654 _GLIBCXX_END_NAMESPACE_VERSION
size_type find_last_of(const basic_string &__str, size_type __pos=npos) const noexcept
Find last position of a character of string.
_Tp * begin(valarray< _Tp > &__va)
Return an iterator pointing to the first element of the valarray.
size_type find_first_not_of(const basic_string &__str, size_type __pos=0) const noexcept
Find position of a character not in string.
basic_string(const _Alloc &__a)
Construct an empty string using allocator a.
size_type find_last_not_of(const basic_string &__str, size_type __pos=npos) const noexcept
Find last position of a character not in string.
basic_istream< _CharT, _Traits > & getline(basic_istream< _CharT, _Traits > &__is, basic_string< _CharT, _Traits, _Alloc > &__str, _CharT __delim)
Read a line from stream into a string.
const _CharT * data() const noexcept
Return const pointer to contents.
size_type size() const noexcept
Returns the number of characters in the string, not including any null-termination.
void reserve(size_type __res_arg=0)
Attempt to preallocate enough memory for specified number of characters.
Primary class template ctype facet.This template class defines classification and conversion function...
Uniform interface to C++98 and C++11 allocators.
Managing sequences of characters and character-like objects.
basic_string & assign(const basic_string &__str)
Set value to contents of another string.
Template class basic_istream.
size_type copy(_CharT *__s, size_type __n, size_type __pos=0) const
Copy substring into C string.
std::basic_istream< _CharT, _Traits > & operator>>(std::basic_istream< _CharT, _Traits > &__is, bitset< _Nb > &__x)
Global I/O operators for bitsets.
Thrown as part of forced unwinding.A magic placeholder class that can be caught by reference to recog...
constexpr iterator_traits< _InputIterator >::difference_type distance(_InputIterator __first, _InputIterator __last)
A generalization of pointer arithmetic.
basic_string & erase(size_type __pos=0, size_type __n=npos)
Remove characters.
basic_string & replace(size_type __pos, size_type __n, const basic_string &__str)
Replace characters with value from another string.
basic_string & append(const basic_string &__str)
Append a string to this string.
locale getloc() const
Locale access.
allocator_type get_allocator() const noexcept
Return copy of allocator used to construct this string.
Uniform interface to all allocator types.
streamsize width() const
Flags access.
size_type rfind(const basic_string &__str, size_type __pos=npos) const noexcept
Find last position of a string.
size_type find_first_of(const basic_string &__str, size_type __pos=0) const noexcept
Find position of a character of string.
void resize(size_type __n, _CharT __c)
Resizes the string to the specified number of characters.
basic_string< wchar_t > wstring
A string of wchar_t.
_Tp * end(valarray< _Tp > &__va)
Return an iterator pointing to one past the last element of the valarray.
void insert(iterator __p, size_type __n, _CharT __c)
Insert multiple characters.
int compare(const basic_string &__str) const
Compare to a string.
constexpr complex< _Tp > operator+(const complex< _Tp > &__x, const complex< _Tp > &__y)
Return new complex value x plus y.
basic_streambuf< _CharT, _Traits > * rdbuf() const
Accessing the underlying buffer.
constexpr const _Tp & min(const _Tp &, const _Tp &)
This does what you think it does.
size_type find(const _CharT *__s, size_type __pos, size_type __n) const noexcept
Find position of a C substring.
void setstate(iostate __state)
Sets additional flags in the error state.
Forward iterators support a superset of input iterator operations.
ptrdiff_t streamsize
Integral type for I/O operation counts and buffer sizes.
size_type max_size() const noexcept
Returns the size() of the largest possible string.