1 // Components for manipulating sequences of characters -*- C++ -*-
3 // Copyright (C) 1997-2013 Free Software Foundation, Inc.
5 // This file is part of the GNU ISO C++ Library. This library is free
6 // software; you can redistribute it and/or modify it under the
7 // terms of the GNU General Public License as published by the
8 // Free Software Foundation; either version 3, or (at your option)
11 // This library is distributed in the hope that it will be useful,
12 // but WITHOUT ANY WARRANTY; without even the implied warranty of
13 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 // GNU General Public License for more details.
16 // Under Section 7 of GPL version 3, you are granted additional
17 // permissions described in the GCC Runtime Library Exception, version
18 // 3.1, as published by the Free Software Foundation.
20 // You should have received a copy of the GNU General Public License and
21 // a copy of the GCC Runtime Library Exception along with this program;
22 // see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
23 // <http://www.gnu.org/licenses/>.
25 /** @file bits/basic_string.h
26 * This is an internal header file, included by other library headers.
27 * Do not attempt to use it directly. @headername{string}
31 // ISO C++ 14882: 21 Strings library
34 #ifndef _BASIC_STRING_H
35 #define _BASIC_STRING_H 1
37 #pragma GCC system_header
39 #include <ext/atomicity.h>
40 #include <debug/debug.h>
41 #if __cplusplus >= 201103L
42 #include <initializer_list>
45 namespace std
_GLIBCXX_VISIBILITY(default)
47 _GLIBCXX_BEGIN_NAMESPACE_VERSION
50 * @class basic_string basic_string.h <string>
51 * @brief Managing sequences of characters and character-like objects.
56 * @tparam _CharT Type of character
57 * @tparam _Traits Traits for character type, defaults to
58 * char_traits<_CharT>.
59 * @tparam _Alloc Allocator type, defaults to allocator<_CharT>.
61 * Meets the requirements of a <a href="tables.html#65">container</a>, a
62 * <a href="tables.html#66">reversible container</a>, and a
63 * <a href="tables.html#67">sequence</a>. Of the
64 * <a href="tables.html#68">optional sequence requirements</a>, only
65 * @c push_back, @c at, and @c %array access are supported.
70 * Documentation? What's that?
71 * Nathan Myers <ncm@cantrip.org>.
73 * A string looks like this:
78 * [basic_string<char_type>] _M_capacity
79 * _M_dataplus _M_refcount
80 * _M_p ----------------> unnamed array of char_type
83 * Where the _M_p points to the first character in the string, and
84 * you cast it to a pointer-to-_Rep and subtract 1 to get a
85 * pointer to the header.
87 * This approach has the enormous advantage that a string object
88 * requires only one allocation. All the ugliness is confined
89 * within a single %pair of inline functions, which each compile to
90 * a single @a add instruction: _Rep::_M_data(), and
91 * string::_M_rep(); and the allocation function which gets a
92 * block of raw bytes and with room enough and constructs a _Rep
93 * object at the front.
95 * The reason you want _M_data pointing to the character %array and
96 * not the _Rep is so that the debugger can see the string
97 * contents. (Probably we should add a non-inline member to get
98 * the _Rep for the debugger to use, so users can check the actual
101 * Note that the _Rep object is a POD so that you can have a
102 * static <em>empty string</em> _Rep object already @a constructed before
103 * static constructors have run. The reference-count encoding is
104 * chosen so that a 0 indicates one reference, so you never try to
105 * destroy the empty-string _Rep object.
107 * All but the last paragraph is considered pretty conventional
108 * for a C++ string implementation.
110 // 21.3 Template class basic_string
111 template<typename _CharT
, typename _Traits
, typename _Alloc
>
114 typedef typename
_Alloc::template rebind
<_CharT
>::other _CharT_alloc_type
;
118 typedef _Traits traits_type
;
119 typedef typename
_Traits::char_type value_type
;
120 typedef _Alloc allocator_type
;
121 typedef typename
_CharT_alloc_type::size_type size_type
;
122 typedef typename
_CharT_alloc_type::difference_type difference_type
;
123 typedef typename
_CharT_alloc_type::reference reference
;
124 typedef typename
_CharT_alloc_type::const_reference const_reference
;
125 typedef typename
_CharT_alloc_type::pointer pointer
;
126 typedef typename
_CharT_alloc_type::const_pointer const_pointer
;
127 typedef __gnu_cxx::__normal_iterator
<pointer
, basic_string
> iterator
;
128 typedef __gnu_cxx::__normal_iterator
<const_pointer
, basic_string
>
130 typedef std::reverse_iterator
<const_iterator
> const_reverse_iterator
;
131 typedef std::reverse_iterator
<iterator
> reverse_iterator
;
134 // _Rep: string representation
136 // 1. String really contains _M_length + 1 characters: due to 21.3.4
137 // must be kept null-terminated.
138 // 2. _M_capacity >= _M_length
139 // Allocated memory is always (_M_capacity + 1) * sizeof(_CharT).
140 // 3. _M_refcount has three states:
141 // -1: leaked, one reference, no ref-copies allowed, non-const.
142 // 0: one reference, non-const.
143 // n>0: n + 1 references, operations require a lock, const.
144 // 4. All fields==0 is an empty string, given the extra storage
145 // beyond-the-end for a null terminator; thus, the shared
146 // empty string representation needs no constructor.
151 size_type _M_capacity
;
152 _Atomic_word _M_refcount
;
155 struct _Rep
: _Rep_base
158 typedef typename
_Alloc::template rebind
<char>::other _Raw_bytes_alloc
;
160 // (Public) Data members:
162 // The maximum number of individual char_type elements of an
163 // individual string is determined by _S_max_size. This is the
164 // value that will be returned by max_size(). (Whereas npos
165 // is the maximum number of bytes the allocator can allocate.)
166 // If one was to divvy up the theoretical largest size string,
167 // with a terminating character and m _CharT elements, it'd
169 // npos = sizeof(_Rep) + (m * sizeof(_CharT)) + sizeof(_CharT)
171 // m = ((npos - sizeof(_Rep))/sizeof(CharT)) - 1
172 // In addition, this implementation quarters this amount.
173 static const size_type _S_max_size
;
174 static const _CharT _S_terminal
;
176 // The following storage is init'd to 0 by the linker, resulting
177 // (carefully) in an empty string with one reference.
178 static size_type _S_empty_rep_storage
[];
183 // NB: Mild hack to avoid strict-aliasing warnings. Note that
184 // _S_empty_rep_storage is never modified and the punning should
185 // be reasonably safe in this case.
186 void* __p
= reinterpret_cast<void*>(&_S_empty_rep_storage
);
187 return *reinterpret_cast<_Rep
*>(__p
);
192 { return this->_M_refcount
< 0; }
196 { return this->_M_refcount
> 0; }
200 { this->_M_refcount
= -1; }
204 { this->_M_refcount
= 0; }
207 _M_set_length_and_sharable(size_type __n
)
209 #if _GLIBCXX_FULLY_DYNAMIC_STRING == 0
210 if (__builtin_expect(this != &_S_empty_rep(), false))
213 this->_M_set_sharable(); // One reference.
214 this->_M_length
= __n
;
215 traits_type::assign(this->_M_refdata()[__n
], _S_terminal
);
216 // grrr. (per 21.3.4)
217 // You cannot leave those LWG people alone for a second.
223 { return reinterpret_cast<_CharT
*>(this + 1); }
226 _M_grab(const _Alloc
& __alloc1
, const _Alloc
& __alloc2
)
228 return (!_M_is_leaked() && __alloc1
== __alloc2
)
229 ? _M_refcopy() : _M_clone(__alloc1
);
234 _S_create(size_type
, size_type
, const _Alloc
&);
237 _M_dispose(const _Alloc
& __a
)
239 #if _GLIBCXX_FULLY_DYNAMIC_STRING == 0
240 if (__builtin_expect(this != &_S_empty_rep(), false))
243 // Be race-detector-friendly. For more info see bits/c++config.
244 _GLIBCXX_SYNCHRONIZATION_HAPPENS_BEFORE(&this->_M_refcount
);
245 if (__gnu_cxx::__exchange_and_add_dispatch(&this->_M_refcount
,
248 _GLIBCXX_SYNCHRONIZATION_HAPPENS_AFTER(&this->_M_refcount
);
255 _M_destroy(const _Alloc
&) throw();
260 #if _GLIBCXX_FULLY_DYNAMIC_STRING == 0
261 if (__builtin_expect(this != &_S_empty_rep(), false))
263 __gnu_cxx::__atomic_add_dispatch(&this->_M_refcount
, 1);
268 _M_clone(const _Alloc
&, size_type __res
= 0);
271 // Use empty-base optimization: http://www.cantrip.org/emptyopt.html
272 struct _Alloc_hider
: _Alloc
274 _Alloc_hider(_CharT
* __dat
, const _Alloc
& __a
)
275 : _Alloc(__a
), _M_p(__dat
) { }
277 _CharT
* _M_p
; // The actual data.
281 // Data Members (public):
282 // NB: This is an unsigned type, and thus represents the maximum
283 // size that the allocator can hold.
284 /// Value returned by various member functions when they fail.
285 static const size_type npos
= static_cast<size_type
>(-1);
288 // Data Members (private):
289 mutable _Alloc_hider _M_dataplus
;
293 { return _M_dataplus
._M_p
; }
297 { return (_M_dataplus
._M_p
= __p
); }
301 { return &((reinterpret_cast<_Rep
*> (_M_data()))[-1]); }
303 // For the internal use we have functions similar to `begin'/`end'
304 // but they do not call _M_leak.
307 { return iterator(_M_data()); }
311 { return iterator(_M_data() + this->size()); }
314 _M_leak() // for use in begin() & non-const op[]
316 if (!_M_rep()->_M_is_leaked())
321 _M_check(size_type __pos
, const char* __s
) const
323 if (__pos
> this->size())
324 __throw_out_of_range(__N(__s
));
329 _M_check_length(size_type __n1
, size_type __n2
, const char* __s
) const
331 if (this->max_size() - (this->size() - __n1
) < __n2
)
332 __throw_length_error(__N(__s
));
335 // NB: _M_limit doesn't check for a bad __pos value.
337 _M_limit(size_type __pos
, size_type __off
) const
339 const bool __testoff
= __off
< this->size() - __pos
;
340 return __testoff
? __off
: this->size() - __pos
;
343 // True if _Rep and source do not overlap.
345 _M_disjunct(const _CharT
* __s
) const
347 return (less
<const _CharT
*>()(__s
, _M_data())
348 || less
<const _CharT
*>()(_M_data() + this->size(), __s
));
351 // When __n = 1 way faster than the general multichar
352 // traits_type::copy/move/assign.
354 _M_copy(_CharT
* __d
, const _CharT
* __s
, size_type __n
)
357 traits_type::assign(*__d
, *__s
);
359 traits_type::copy(__d
, __s
, __n
);
363 _M_move(_CharT
* __d
, const _CharT
* __s
, size_type __n
)
366 traits_type::assign(*__d
, *__s
);
368 traits_type::move(__d
, __s
, __n
);
372 _M_assign(_CharT
* __d
, size_type __n
, _CharT __c
)
375 traits_type::assign(*__d
, __c
);
377 traits_type::assign(__d
, __n
, __c
);
380 // _S_copy_chars is a separate template to permit specialization
381 // to optimize for the common case of pointers as iterators.
382 template<class _Iterator
>
384 _S_copy_chars(_CharT
* __p
, _Iterator __k1
, _Iterator __k2
)
386 for (; __k1
!= __k2
; ++__k1
, ++__p
)
387 traits_type::assign(*__p
, *__k1
); // These types are off.
391 _S_copy_chars(_CharT
* __p
, iterator __k1
, iterator __k2
)
392 { _S_copy_chars(__p
, __k1
.base(), __k2
.base()); }
395 _S_copy_chars(_CharT
* __p
, const_iterator __k1
, const_iterator __k2
)
396 { _S_copy_chars(__p
, __k1
.base(), __k2
.base()); }
399 _S_copy_chars(_CharT
* __p
, _CharT
* __k1
, _CharT
* __k2
)
400 { _M_copy(__p
, __k1
, __k2
- __k1
); }
403 _S_copy_chars(_CharT
* __p
, const _CharT
* __k1
, const _CharT
* __k2
)
404 { _M_copy(__p
, __k1
, __k2
- __k1
); }
407 _S_compare(size_type __n1
, size_type __n2
)
409 const difference_type __d
= difference_type(__n1
- __n2
);
411 if (__d
> __gnu_cxx::__numeric_traits
<int>::__max
)
412 return __gnu_cxx::__numeric_traits
<int>::__max
;
413 else if (__d
< __gnu_cxx::__numeric_traits
<int>::__min
)
414 return __gnu_cxx::__numeric_traits
<int>::__min
;
420 _M_mutate(size_type __pos
, size_type __len1
, size_type __len2
);
427 { return _Rep::_S_empty_rep(); }
430 // Construct/copy/destroy:
431 // NB: We overload ctors in some cases instead of using default
432 // arguments, per 17.4.4.4 para. 2 item 2.
435 * @brief Default constructor creates an empty string.
438 #if _GLIBCXX_FULLY_DYNAMIC_STRING == 0
439 : _M_dataplus(_S_empty_rep()._M_refdata(), _Alloc()) { }
441 : _M_dataplus(_S_construct(size_type(), _CharT(), _Alloc()), _Alloc()){ }
445 * @brief Construct an empty string using allocator @a a.
448 basic_string(const _Alloc
& __a
);
450 // NB: per LWG issue 42, semantics different from IS:
452 * @brief Construct string with copy of value of @a str.
453 * @param __str Source string.
455 basic_string(const basic_string
& __str
);
457 * @brief Construct string as copy of a substring.
458 * @param __str Source string.
459 * @param __pos Index of first character to copy from.
460 * @param __n Number of characters to copy (default remainder).
462 basic_string(const basic_string
& __str
, size_type __pos
,
463 size_type __n
= npos
);
465 * @brief Construct string as copy of a substring.
466 * @param __str Source string.
467 * @param __pos Index of first character to copy from.
468 * @param __n Number of characters to copy.
469 * @param __a Allocator to use.
471 basic_string(const basic_string
& __str
, size_type __pos
,
472 size_type __n
, const _Alloc
& __a
);
475 * @brief Construct string initialized by a character %array.
476 * @param __s Source character %array.
477 * @param __n Number of characters to copy.
478 * @param __a Allocator to use (default is default allocator).
480 * NB: @a __s must have at least @a __n characters, '\\0'
481 * has no special meaning.
483 basic_string(const _CharT
* __s
, size_type __n
,
484 const _Alloc
& __a
= _Alloc());
486 * @brief Construct string as copy of a C string.
487 * @param __s Source C string.
488 * @param __a Allocator to use (default is default allocator).
490 basic_string(const _CharT
* __s
, const _Alloc
& __a
= _Alloc());
492 * @brief Construct string as multiple characters.
493 * @param __n Number of characters.
494 * @param __c Character to use.
495 * @param __a Allocator to use (default is default allocator).
497 basic_string(size_type __n
, _CharT __c
, const _Alloc
& __a
= _Alloc());
499 #if __cplusplus >= 201103L
501 * @brief Move construct string.
502 * @param __str Source string.
504 * The newly-created string contains the exact contents of @a __str.
505 * @a __str is a valid, but unspecified string.
507 basic_string(basic_string
&& __str
) noexcept
508 : _M_dataplus(__str
._M_dataplus
)
510 #if _GLIBCXX_FULLY_DYNAMIC_STRING == 0
511 __str
._M_data(_S_empty_rep()._M_refdata());
513 __str
._M_data(_S_construct(size_type(), _CharT(), get_allocator()));
518 * @brief Construct string from an initializer %list.
519 * @param __l std::initializer_list of characters.
520 * @param __a Allocator to use (default is default allocator).
522 basic_string(initializer_list
<_CharT
> __l
, const _Alloc
& __a
= _Alloc());
526 * @brief Construct string as copy of a range.
527 * @param __beg Start of range.
528 * @param __end End of range.
529 * @param __a Allocator to use (default is default allocator).
531 template<class _InputIterator
>
532 basic_string(_InputIterator __beg
, _InputIterator __end
,
533 const _Alloc
& __a
= _Alloc());
536 * @brief Destroy the string instance.
538 ~basic_string() _GLIBCXX_NOEXCEPT
539 { _M_rep()->_M_dispose(this->get_allocator()); }
542 * @brief Assign the value of @a str to this string.
543 * @param __str Source string.
546 operator=(const basic_string
& __str
)
547 { return this->assign(__str
); }
550 * @brief Copy contents of @a s into this string.
551 * @param __s Source null-terminated string.
554 operator=(const _CharT
* __s
)
555 { return this->assign(__s
); }
558 * @brief Set value to string of length 1.
559 * @param __c Source character.
561 * Assigning to a character makes this string length 1 and
562 * (*this)[0] == @a c.
565 operator=(_CharT __c
)
567 this->assign(1, __c
);
571 #if __cplusplus >= 201103L
573 * @brief Move assign the value of @a str to this string.
574 * @param __str Source string.
576 * The contents of @a str are moved into this string (without copying).
577 * @a str is a valid, but unspecified string.
580 operator=(basic_string
&& __str
)
588 * @brief Set value to string constructed from initializer %list.
589 * @param __l std::initializer_list.
592 operator=(initializer_list
<_CharT
> __l
)
594 this->assign(__l
.begin(), __l
.size());
601 * Returns a read/write iterator that points to the first character in
602 * the %string. Unshares the string.
605 begin() _GLIBCXX_NOEXCEPT
608 return iterator(_M_data());
612 * Returns a read-only (constant) iterator that points to the first
613 * character in the %string.
616 begin() const _GLIBCXX_NOEXCEPT
617 { return const_iterator(_M_data()); }
620 * Returns a read/write iterator that points one past the last
621 * character in the %string. Unshares the string.
624 end() _GLIBCXX_NOEXCEPT
627 return iterator(_M_data() + this->size());
631 * Returns a read-only (constant) iterator that points one past the
632 * last character in the %string.
635 end() const _GLIBCXX_NOEXCEPT
636 { return const_iterator(_M_data() + this->size()); }
639 * Returns a read/write reverse iterator that points to the last
640 * character in the %string. Iteration is done in reverse element
641 * order. Unshares the string.
644 rbegin() _GLIBCXX_NOEXCEPT
645 { return reverse_iterator(this->end()); }
648 * Returns a read-only (constant) reverse iterator that points
649 * to the last character in the %string. Iteration is done in
650 * reverse element order.
652 const_reverse_iterator
653 rbegin() const _GLIBCXX_NOEXCEPT
654 { return const_reverse_iterator(this->end()); }
657 * Returns a read/write reverse iterator that points to one before the
658 * first character in the %string. Iteration is done in reverse
659 * element order. Unshares the string.
662 rend() _GLIBCXX_NOEXCEPT
663 { return reverse_iterator(this->begin()); }
666 * Returns a read-only (constant) reverse iterator that points
667 * to one before the first character in the %string. Iteration
668 * is done in reverse element order.
670 const_reverse_iterator
671 rend() const _GLIBCXX_NOEXCEPT
672 { return const_reverse_iterator(this->begin()); }
674 #if __cplusplus >= 201103L
676 * Returns a read-only (constant) iterator that points to the first
677 * character in the %string.
680 cbegin() const noexcept
681 { return const_iterator(this->_M_data()); }
684 * Returns a read-only (constant) iterator that points one past the
685 * last character in the %string.
688 cend() const noexcept
689 { return const_iterator(this->_M_data() + this->size()); }
692 * Returns a read-only (constant) reverse iterator that points
693 * to the last character in the %string. Iteration is done in
694 * reverse element order.
696 const_reverse_iterator
697 crbegin() const noexcept
698 { return const_reverse_iterator(this->end()); }
701 * Returns a read-only (constant) reverse iterator that points
702 * to one before the first character in the %string. Iteration
703 * is done in reverse element order.
705 const_reverse_iterator
706 crend() const noexcept
707 { return const_reverse_iterator(this->begin()); }
712 /// Returns the number of characters in the string, not including any
713 /// null-termination.
715 size() const _GLIBCXX_NOEXCEPT
716 { return _M_rep()->_M_length
; }
718 /// Returns the number of characters in the string, not including any
719 /// null-termination.
721 length() const _GLIBCXX_NOEXCEPT
722 { return _M_rep()->_M_length
; }
724 /// Returns the size() of the largest possible %string.
726 max_size() const _GLIBCXX_NOEXCEPT
727 { return _Rep::_S_max_size
; }
730 * @brief Resizes the %string to the specified number of characters.
731 * @param __n Number of characters the %string should contain.
732 * @param __c Character to fill any new elements.
734 * This function will %resize the %string to the specified
735 * number of characters. If the number is smaller than the
736 * %string's current size the %string is truncated, otherwise
737 * the %string is extended and new elements are %set to @a __c.
740 resize(size_type __n
, _CharT __c
);
743 * @brief Resizes the %string to the specified number of characters.
744 * @param __n Number of characters the %string should contain.
746 * This function will resize the %string to the specified length. If
747 * the new size is smaller than the %string's current size the %string
748 * is truncated, otherwise the %string is extended and new characters
749 * are default-constructed. For basic types such as char, this means
753 resize(size_type __n
)
754 { this->resize(__n
, _CharT()); }
756 #if __cplusplus >= 201103L
757 /// A non-binding request to reduce capacity() to size().
761 if (capacity() > size())
772 * Returns the total number of characters that the %string can hold
773 * before needing to allocate more memory.
776 capacity() const _GLIBCXX_NOEXCEPT
777 { return _M_rep()->_M_capacity
; }
780 * @brief Attempt to preallocate enough memory for specified number of
782 * @param __res_arg Number of characters required.
783 * @throw std::length_error If @a __res_arg exceeds @c max_size().
785 * This function attempts to reserve enough memory for the
786 * %string to hold the specified number of characters. If the
787 * number requested is more than max_size(), length_error is
790 * The advantage of this function is that if optimal code is a
791 * necessity and the user can determine the string length that will be
792 * required, the user can reserve the memory in %advance, and thus
793 * prevent a possible reallocation of memory and copying of %string
797 reserve(size_type __res_arg
= 0);
800 * Erases the string, making it empty.
803 clear() _GLIBCXX_NOEXCEPT
804 { _M_mutate(0, this->size(), 0); }
807 * Returns true if the %string is empty. Equivalent to
808 * <code>*this == ""</code>.
811 empty() const _GLIBCXX_NOEXCEPT
812 { return this->size() == 0; }
816 * @brief Subscript access to the data contained in the %string.
817 * @param __pos The index of the character to access.
818 * @return Read-only (constant) reference to the character.
820 * This operator allows for easy, array-style, data access.
821 * Note that data access with this operator is unchecked and
822 * out_of_range lookups are not defined. (For checked lookups
826 operator[] (size_type __pos
) const
828 _GLIBCXX_DEBUG_ASSERT(__pos
<= size());
829 return _M_data()[__pos
];
833 * @brief Subscript access to the data contained in the %string.
834 * @param __pos The index of the character to access.
835 * @return Read/write reference to the character.
837 * This operator allows for easy, array-style, data access.
838 * Note that data access with this operator is unchecked and
839 * out_of_range lookups are not defined. (For checked lookups
840 * see at().) Unshares the string.
843 operator[](size_type __pos
)
845 // allow pos == size() as v3 extension:
846 _GLIBCXX_DEBUG_ASSERT(__pos
<= size());
847 // but be strict in pedantic mode:
848 _GLIBCXX_DEBUG_PEDASSERT(__pos
< size());
850 return _M_data()[__pos
];
854 * @brief Provides access to the data contained in the %string.
855 * @param __n The index of the character to access.
856 * @return Read-only (const) reference to the character.
857 * @throw std::out_of_range If @a n is an invalid index.
859 * This function provides for safer data access. The parameter is
860 * first checked that it is in the range of the string. The function
861 * throws out_of_range if the check fails.
864 at(size_type __n
) const
866 if (__n
>= this->size())
867 __throw_out_of_range(__N("basic_string::at"));
868 return _M_data()[__n
];
872 * @brief Provides access to the data contained in the %string.
873 * @param __n The index of the character to access.
874 * @return Read/write reference to the character.
875 * @throw std::out_of_range If @a n is an invalid index.
877 * This function provides for safer data access. The parameter is
878 * first checked that it is in the range of the string. The function
879 * throws out_of_range if the check fails. Success results in
880 * unsharing the string.
886 __throw_out_of_range(__N("basic_string::at"));
888 return _M_data()[__n
];
891 #if __cplusplus >= 201103L
893 * Returns a read/write reference to the data at the first
894 * element of the %string.
898 { return operator[](0); }
901 * Returns a read-only (constant) reference to the data at the first
902 * element of the %string.
906 { return operator[](0); }
909 * Returns a read/write reference to the data at the last
910 * element of the %string.
914 { return operator[](this->size() - 1); }
917 * Returns a read-only (constant) reference to the data at the
918 * last element of the %string.
922 { return operator[](this->size() - 1); }
927 * @brief Append a string to this string.
928 * @param __str The string to append.
929 * @return Reference to this string.
932 operator+=(const basic_string
& __str
)
933 { return this->append(__str
); }
936 * @brief Append a C string.
937 * @param __s The C string to append.
938 * @return Reference to this string.
941 operator+=(const _CharT
* __s
)
942 { return this->append(__s
); }
945 * @brief Append a character.
946 * @param __c The character to append.
947 * @return Reference to this string.
950 operator+=(_CharT __c
)
952 this->push_back(__c
);
956 #if __cplusplus >= 201103L
958 * @brief Append an initializer_list of characters.
959 * @param __l The initializer_list of characters to be appended.
960 * @return Reference to this string.
963 operator+=(initializer_list
<_CharT
> __l
)
964 { return this->append(__l
.begin(), __l
.size()); }
968 * @brief Append a string to this string.
969 * @param __str The string to append.
970 * @return Reference to this string.
973 append(const basic_string
& __str
);
976 * @brief Append a substring.
977 * @param __str The string to append.
978 * @param __pos Index of the first character of str to append.
979 * @param __n The number of characters to append.
980 * @return Reference to this string.
981 * @throw std::out_of_range if @a __pos is not a valid index.
983 * This function appends @a __n characters from @a __str
984 * starting at @a __pos to this string. If @a __n is is larger
985 * than the number of available characters in @a __str, the
986 * remainder of @a __str is appended.
989 append(const basic_string
& __str
, size_type __pos
, size_type __n
);
992 * @brief Append a C substring.
993 * @param __s The C string to append.
994 * @param __n The number of characters to append.
995 * @return Reference to this string.
998 append(const _CharT
* __s
, size_type __n
);
1001 * @brief Append a C string.
1002 * @param __s The C string to append.
1003 * @return Reference to this string.
1006 append(const _CharT
* __s
)
1008 __glibcxx_requires_string(__s
);
1009 return this->append(__s
, traits_type::length(__s
));
1013 * @brief Append multiple characters.
1014 * @param __n The number of characters to append.
1015 * @param __c The character to use.
1016 * @return Reference to this string.
1018 * Appends __n copies of __c to this string.
1021 append(size_type __n
, _CharT __c
);
1023 #if __cplusplus >= 201103L
1025 * @brief Append an initializer_list of characters.
1026 * @param __l The initializer_list of characters to append.
1027 * @return Reference to this string.
1030 append(initializer_list
<_CharT
> __l
)
1031 { return this->append(__l
.begin(), __l
.size()); }
1035 * @brief Append a range of characters.
1036 * @param __first Iterator referencing the first character to append.
1037 * @param __last Iterator marking the end of the range.
1038 * @return Reference to this string.
1040 * Appends characters in the range [__first,__last) to this string.
1042 template<class _InputIterator
>
1044 append(_InputIterator __first
, _InputIterator __last
)
1045 { return this->replace(_M_iend(), _M_iend(), __first
, __last
); }
1048 * @brief Append a single character.
1049 * @param __c Character to append.
1052 push_back(_CharT __c
)
1054 const size_type __len
= 1 + this->size();
1055 if (__len
> this->capacity() || _M_rep()->_M_is_shared())
1056 this->reserve(__len
);
1057 traits_type::assign(_M_data()[this->size()], __c
);
1058 _M_rep()->_M_set_length_and_sharable(__len
);
1062 * @brief Set value to contents of another string.
1063 * @param __str Source string to use.
1064 * @return Reference to this string.
1067 assign(const basic_string
& __str
);
1069 #if __cplusplus >= 201103L
1071 * @brief Set value to contents of another string.
1072 * @param __str Source string to use.
1073 * @return Reference to this string.
1075 * This function sets this string to the exact contents of @a __str.
1076 * @a __str is a valid, but unspecified string.
1079 assign(basic_string
&& __str
)
1087 * @brief Set value to a substring of a string.
1088 * @param __str The string to use.
1089 * @param __pos Index of the first character of str.
1090 * @param __n Number of characters to use.
1091 * @return Reference to this string.
1092 * @throw std::out_of_range if @a pos is not a valid index.
1094 * This function sets this string to the substring of @a __str
1095 * consisting of @a __n characters at @a __pos. If @a __n is
1096 * is larger than the number of available characters in @a
1097 * __str, the remainder of @a __str is used.
1100 assign(const basic_string
& __str
, size_type __pos
, size_type __n
)
1101 { return this->assign(__str
._M_data()
1102 + __str
._M_check(__pos
, "basic_string::assign"),
1103 __str
._M_limit(__pos
, __n
)); }
1106 * @brief Set value to a C substring.
1107 * @param __s The C string to use.
1108 * @param __n Number of characters to use.
1109 * @return Reference to this string.
1111 * This function sets the value of this string to the first @a __n
1112 * characters of @a __s. If @a __n is is larger than the number of
1113 * available characters in @a __s, the remainder of @a __s is used.
1116 assign(const _CharT
* __s
, size_type __n
);
1119 * @brief Set value to contents of a C string.
1120 * @param __s The C string to use.
1121 * @return Reference to this string.
1123 * This function sets the value of this string to the value of @a __s.
1124 * The data is copied, so there is no dependence on @a __s once the
1128 assign(const _CharT
* __s
)
1130 __glibcxx_requires_string(__s
);
1131 return this->assign(__s
, traits_type::length(__s
));
1135 * @brief Set value to multiple characters.
1136 * @param __n Length of the resulting string.
1137 * @param __c The character to use.
1138 * @return Reference to this string.
1140 * This function sets the value of this string to @a __n copies of
1144 assign(size_type __n
, _CharT __c
)
1145 { return _M_replace_aux(size_type(0), this->size(), __n
, __c
); }
1148 * @brief Set value to a range of characters.
1149 * @param __first Iterator referencing the first character to append.
1150 * @param __last Iterator marking the end of the range.
1151 * @return Reference to this string.
1153 * Sets value of string to characters in the range [__first,__last).
1155 template<class _InputIterator
>
1157 assign(_InputIterator __first
, _InputIterator __last
)
1158 { return this->replace(_M_ibegin(), _M_iend(), __first
, __last
); }
1160 #if __cplusplus >= 201103L
1162 * @brief Set value to an initializer_list of characters.
1163 * @param __l The initializer_list of characters to assign.
1164 * @return Reference to this string.
1167 assign(initializer_list
<_CharT
> __l
)
1168 { return this->assign(__l
.begin(), __l
.size()); }
1172 * @brief Insert multiple characters.
1173 * @param __p Iterator referencing location in string to insert at.
1174 * @param __n Number of characters to insert
1175 * @param __c The character to insert.
1176 * @throw std::length_error If new length exceeds @c max_size().
1178 * Inserts @a __n copies of character @a __c starting at the
1179 * position referenced by iterator @a __p. If adding
1180 * characters causes the length to exceed max_size(),
1181 * length_error is thrown. The value of the string doesn't
1182 * change if an error is thrown.
1185 insert(iterator __p
, size_type __n
, _CharT __c
)
1186 { this->replace(__p
, __p
, __n
, __c
); }
1189 * @brief Insert a range of characters.
1190 * @param __p Iterator referencing location in string to insert at.
1191 * @param __beg Start of range.
1192 * @param __end End of range.
1193 * @throw std::length_error If new length exceeds @c max_size().
1195 * Inserts characters in range [__beg,__end). If adding
1196 * characters causes the length to exceed max_size(),
1197 * length_error is thrown. The value of the string doesn't
1198 * change if an error is thrown.
1200 template<class _InputIterator
>
1202 insert(iterator __p
, _InputIterator __beg
, _InputIterator __end
)
1203 { this->replace(__p
, __p
, __beg
, __end
); }
1205 #if __cplusplus >= 201103L
1207 * @brief Insert an initializer_list of characters.
1208 * @param __p Iterator referencing location in string to insert at.
1209 * @param __l The initializer_list of characters to insert.
1210 * @throw std::length_error If new length exceeds @c max_size().
1213 insert(iterator __p
, initializer_list
<_CharT
> __l
)
1215 _GLIBCXX_DEBUG_PEDASSERT(__p
>= _M_ibegin() && __p
<= _M_iend());
1216 this->insert(__p
- _M_ibegin(), __l
.begin(), __l
.size());
1221 * @brief Insert value of a string.
1222 * @param __pos1 Iterator referencing location in string to insert at.
1223 * @param __str The string to insert.
1224 * @return Reference to this string.
1225 * @throw std::length_error If new length exceeds @c max_size().
1227 * Inserts value of @a __str starting at @a __pos1. If adding
1228 * characters causes the length to exceed max_size(),
1229 * length_error is thrown. The value of the string doesn't
1230 * change if an error is thrown.
1233 insert(size_type __pos1
, const basic_string
& __str
)
1234 { return this->insert(__pos1
, __str
, size_type(0), __str
.size()); }
1237 * @brief Insert a substring.
1238 * @param __pos1 Iterator referencing location in string to insert at.
1239 * @param __str The string to insert.
1240 * @param __pos2 Start of characters in str to insert.
1241 * @param __n Number of characters to insert.
1242 * @return Reference to this string.
1243 * @throw std::length_error If new length exceeds @c max_size().
1244 * @throw std::out_of_range If @a pos1 > size() or
1245 * @a __pos2 > @a str.size().
1247 * Starting at @a pos1, insert @a __n character of @a __str
1248 * beginning with @a __pos2. If adding characters causes the
1249 * length to exceed max_size(), length_error is thrown. If @a
1250 * __pos1 is beyond the end of this string or @a __pos2 is
1251 * beyond the end of @a __str, out_of_range is thrown. The
1252 * value of the string doesn't change if an error is thrown.
1255 insert(size_type __pos1
, const basic_string
& __str
,
1256 size_type __pos2
, size_type __n
)
1257 { return this->insert(__pos1
, __str
._M_data()
1258 + __str
._M_check(__pos2
, "basic_string::insert"),
1259 __str
._M_limit(__pos2
, __n
)); }
1262 * @brief Insert a C substring.
1263 * @param __pos Iterator referencing location in string to insert at.
1264 * @param __s The C string to insert.
1265 * @param __n The number of characters to insert.
1266 * @return Reference to this string.
1267 * @throw std::length_error If new length exceeds @c max_size().
1268 * @throw std::out_of_range If @a __pos is beyond the end of this
1271 * Inserts the first @a __n characters of @a __s starting at @a
1272 * __pos. If adding characters causes the length to exceed
1273 * max_size(), length_error is thrown. If @a __pos is beyond
1274 * end(), out_of_range is thrown. The value of the string
1275 * doesn't change if an error is thrown.
1278 insert(size_type __pos
, const _CharT
* __s
, size_type __n
);
1281 * @brief Insert a C string.
1282 * @param __pos Iterator referencing location in string to insert at.
1283 * @param __s The C string to insert.
1284 * @return Reference to this string.
1285 * @throw std::length_error If new length exceeds @c max_size().
1286 * @throw std::out_of_range If @a pos is beyond the end of this
1289 * Inserts the first @a n characters of @a __s starting at @a __pos. If
1290 * adding characters causes the length to exceed max_size(),
1291 * length_error is thrown. If @a __pos is beyond end(), out_of_range is
1292 * thrown. The value of the string doesn't change if an error is
1296 insert(size_type __pos
, const _CharT
* __s
)
1298 __glibcxx_requires_string(__s
);
1299 return this->insert(__pos
, __s
, traits_type::length(__s
));
1303 * @brief Insert multiple characters.
1304 * @param __pos Index in string to insert at.
1305 * @param __n Number of characters to insert
1306 * @param __c The character to insert.
1307 * @return Reference to this string.
1308 * @throw std::length_error If new length exceeds @c max_size().
1309 * @throw std::out_of_range If @a __pos is beyond the end of this
1312 * Inserts @a __n copies of character @a __c starting at index
1313 * @a __pos. If adding characters causes the length to exceed
1314 * max_size(), length_error is thrown. If @a __pos > length(),
1315 * out_of_range is thrown. The value of the string doesn't
1316 * change if an error is thrown.
1319 insert(size_type __pos
, size_type __n
, _CharT __c
)
1320 { return _M_replace_aux(_M_check(__pos
, "basic_string::insert"),
1321 size_type(0), __n
, __c
); }
1324 * @brief Insert one character.
1325 * @param __p Iterator referencing position in string to insert at.
1326 * @param __c The character to insert.
1327 * @return Iterator referencing newly inserted char.
1328 * @throw std::length_error If new length exceeds @c max_size().
1330 * Inserts character @a __c at position referenced by @a __p.
1331 * If adding character causes the length to exceed max_size(),
1332 * length_error is thrown. If @a __p is beyond end of string,
1333 * out_of_range is thrown. The value of the string doesn't
1334 * change if an error is thrown.
1337 insert(iterator __p
, _CharT __c
)
1339 _GLIBCXX_DEBUG_PEDASSERT(__p
>= _M_ibegin() && __p
<= _M_iend());
1340 const size_type __pos
= __p
- _M_ibegin();
1341 _M_replace_aux(__pos
, size_type(0), size_type(1), __c
);
1342 _M_rep()->_M_set_leaked();
1343 return iterator(_M_data() + __pos
);
1347 * @brief Remove characters.
1348 * @param __pos Index of first character to remove (default 0).
1349 * @param __n Number of characters to remove (default remainder).
1350 * @return Reference to this string.
1351 * @throw std::out_of_range If @a pos is beyond the end of this
1354 * Removes @a __n characters from this string starting at @a
1355 * __pos. The length of the string is reduced by @a __n. If
1356 * there are < @a __n characters to remove, the remainder of
1357 * the string is truncated. If @a __p is beyond end of string,
1358 * out_of_range is thrown. The value of the string doesn't
1359 * change if an error is thrown.
1362 erase(size_type __pos
= 0, size_type __n
= npos
)
1364 _M_mutate(_M_check(__pos
, "basic_string::erase"),
1365 _M_limit(__pos
, __n
), size_type(0));
1370 * @brief Remove one character.
1371 * @param __position Iterator referencing the character to remove.
1372 * @return iterator referencing same location after removal.
1374 * Removes the character at @a __position from this string. The value
1375 * of the string doesn't change if an error is thrown.
1378 erase(iterator __position
)
1380 _GLIBCXX_DEBUG_PEDASSERT(__position
>= _M_ibegin()
1381 && __position
< _M_iend());
1382 const size_type __pos
= __position
- _M_ibegin();
1383 _M_mutate(__pos
, size_type(1), size_type(0));
1384 _M_rep()->_M_set_leaked();
1385 return iterator(_M_data() + __pos
);
1389 * @brief Remove a range of characters.
1390 * @param __first Iterator referencing the first character to remove.
1391 * @param __last Iterator referencing the end of the range.
1392 * @return Iterator referencing location of first after removal.
1394 * Removes the characters in the range [first,last) from this string.
1395 * The value of the string doesn't change if an error is thrown.
1398 erase(iterator __first
, iterator __last
);
1400 #if __cplusplus >= 201103L
1402 * @brief Remove the last character.
1404 * The string must be non-empty.
1408 { erase(size()-1, 1); }
1412 * @brief Replace characters with value from another string.
1413 * @param __pos Index of first character to replace.
1414 * @param __n Number of characters to be replaced.
1415 * @param __str String to insert.
1416 * @return Reference to this string.
1417 * @throw std::out_of_range If @a pos is beyond the end of this
1419 * @throw std::length_error If new length exceeds @c max_size().
1421 * Removes the characters in the range [__pos,__pos+__n) from
1422 * this string. In place, the value of @a __str is inserted.
1423 * If @a __pos is beyond end of string, out_of_range is thrown.
1424 * If the length of the result exceeds max_size(), length_error
1425 * is thrown. The value of the string doesn't change if an
1429 replace(size_type __pos
, size_type __n
, const basic_string
& __str
)
1430 { return this->replace(__pos
, __n
, __str
._M_data(), __str
.size()); }
1433 * @brief Replace characters with value from another string.
1434 * @param __pos1 Index of first character to replace.
1435 * @param __n1 Number of characters to be replaced.
1436 * @param __str String to insert.
1437 * @param __pos2 Index of first character of str to use.
1438 * @param __n2 Number of characters from str to use.
1439 * @return Reference to this string.
1440 * @throw std::out_of_range If @a __pos1 > size() or @a __pos2 >
1442 * @throw std::length_error If new length exceeds @c max_size().
1444 * Removes the characters in the range [__pos1,__pos1 + n) from this
1445 * string. In place, the value of @a __str is inserted. If @a __pos is
1446 * beyond end of string, out_of_range is thrown. If the length of the
1447 * result exceeds max_size(), length_error is thrown. The value of the
1448 * string doesn't change if an error is thrown.
1451 replace(size_type __pos1
, size_type __n1
, const basic_string
& __str
,
1452 size_type __pos2
, size_type __n2
)
1453 { return this->replace(__pos1
, __n1
, __str
._M_data()
1454 + __str
._M_check(__pos2
, "basic_string::replace"),
1455 __str
._M_limit(__pos2
, __n2
)); }
1458 * @brief Replace characters with value of a C substring.
1459 * @param __pos Index of first character to replace.
1460 * @param __n1 Number of characters to be replaced.
1461 * @param __s C string to insert.
1462 * @param __n2 Number of characters from @a s to use.
1463 * @return Reference to this string.
1464 * @throw std::out_of_range If @a pos1 > size().
1465 * @throw std::length_error If new length exceeds @c max_size().
1467 * Removes the characters in the range [__pos,__pos + __n1)
1468 * from this string. In place, the first @a __n2 characters of
1469 * @a __s are inserted, or all of @a __s if @a __n2 is too large. If
1470 * @a __pos is beyond end of string, out_of_range is thrown. If
1471 * the length of result exceeds max_size(), length_error is
1472 * thrown. The value of the string doesn't change if an error
1476 replace(size_type __pos
, size_type __n1
, const _CharT
* __s
,
1480 * @brief Replace characters with value of a C string.
1481 * @param __pos Index of first character to replace.
1482 * @param __n1 Number of characters to be replaced.
1483 * @param __s C string to insert.
1484 * @return Reference to this string.
1485 * @throw std::out_of_range If @a pos > size().
1486 * @throw std::length_error If new length exceeds @c max_size().
1488 * Removes the characters in the range [__pos,__pos + __n1)
1489 * from this string. In place, the characters of @a __s are
1490 * inserted. If @a __pos is beyond end of string, out_of_range
1491 * is thrown. If the length of result exceeds max_size(),
1492 * length_error is thrown. The value of the string doesn't
1493 * change if an error is thrown.
1496 replace(size_type __pos
, size_type __n1
, const _CharT
* __s
)
1498 __glibcxx_requires_string(__s
);
1499 return this->replace(__pos
, __n1
, __s
, traits_type::length(__s
));
1503 * @brief Replace characters with multiple characters.
1504 * @param __pos Index of first character to replace.
1505 * @param __n1 Number of characters to be replaced.
1506 * @param __n2 Number of characters to insert.
1507 * @param __c Character to insert.
1508 * @return Reference to this string.
1509 * @throw std::out_of_range If @a __pos > size().
1510 * @throw std::length_error If new length exceeds @c max_size().
1512 * Removes the characters in the range [pos,pos + n1) from this
1513 * string. In place, @a __n2 copies of @a __c are inserted.
1514 * If @a __pos is beyond end of string, out_of_range is thrown.
1515 * If the length of result exceeds max_size(), length_error is
1516 * thrown. The value of the string doesn't change if an error
1520 replace(size_type __pos
, size_type __n1
, size_type __n2
, _CharT __c
)
1521 { return _M_replace_aux(_M_check(__pos
, "basic_string::replace"),
1522 _M_limit(__pos
, __n1
), __n2
, __c
); }
1525 * @brief Replace range of characters with string.
1526 * @param __i1 Iterator referencing start of range to replace.
1527 * @param __i2 Iterator referencing end of range to replace.
1528 * @param __str String value to insert.
1529 * @return Reference to this string.
1530 * @throw std::length_error If new length exceeds @c max_size().
1532 * Removes the characters in the range [__i1,__i2). In place,
1533 * the value of @a __str is inserted. If the length of result
1534 * exceeds max_size(), length_error is thrown. The value of
1535 * the string doesn't change if an error is thrown.
1538 replace(iterator __i1
, iterator __i2
, const basic_string
& __str
)
1539 { return this->replace(__i1
, __i2
, __str
._M_data(), __str
.size()); }
1542 * @brief Replace range of characters with C substring.
1543 * @param __i1 Iterator referencing start of range to replace.
1544 * @param __i2 Iterator referencing end of range to replace.
1545 * @param __s C string value to insert.
1546 * @param __n Number of characters from s to insert.
1547 * @return Reference to this string.
1548 * @throw std::length_error If new length exceeds @c max_size().
1550 * Removes the characters in the range [__i1,__i2). In place,
1551 * the first @a __n characters of @a __s are inserted. If the
1552 * length of result exceeds max_size(), length_error is thrown.
1553 * The value of the string doesn't change if an error is
1557 replace(iterator __i1
, iterator __i2
, const _CharT
* __s
, size_type __n
)
1559 _GLIBCXX_DEBUG_PEDASSERT(_M_ibegin() <= __i1
&& __i1
<= __i2
1560 && __i2
<= _M_iend());
1561 return this->replace(__i1
- _M_ibegin(), __i2
- __i1
, __s
, __n
);
1565 * @brief Replace range of characters with C string.
1566 * @param __i1 Iterator referencing start of range to replace.
1567 * @param __i2 Iterator referencing end of range to replace.
1568 * @param __s C string value to insert.
1569 * @return Reference to this string.
1570 * @throw std::length_error If new length exceeds @c max_size().
1572 * Removes the characters in the range [__i1,__i2). In place,
1573 * the characters of @a __s are inserted. If the length of
1574 * result exceeds max_size(), length_error is thrown. The
1575 * value of the string doesn't change if an error is thrown.
1578 replace(iterator __i1
, iterator __i2
, const _CharT
* __s
)
1580 __glibcxx_requires_string(__s
);
1581 return this->replace(__i1
, __i2
, __s
, traits_type::length(__s
));
1585 * @brief Replace range of characters with multiple characters
1586 * @param __i1 Iterator referencing start of range to replace.
1587 * @param __i2 Iterator referencing end of range to replace.
1588 * @param __n Number of characters to insert.
1589 * @param __c Character to insert.
1590 * @return Reference to this string.
1591 * @throw std::length_error If new length exceeds @c max_size().
1593 * Removes the characters in the range [__i1,__i2). In place,
1594 * @a __n copies of @a __c are inserted. If the length of
1595 * result exceeds max_size(), length_error is thrown. The
1596 * value of the string doesn't change if an error is thrown.
1599 replace(iterator __i1
, iterator __i2
, size_type __n
, _CharT __c
)
1601 _GLIBCXX_DEBUG_PEDASSERT(_M_ibegin() <= __i1
&& __i1
<= __i2
1602 && __i2
<= _M_iend());
1603 return _M_replace_aux(__i1
- _M_ibegin(), __i2
- __i1
, __n
, __c
);
1607 * @brief Replace range of characters with range.
1608 * @param __i1 Iterator referencing start of range to replace.
1609 * @param __i2 Iterator referencing end of range to replace.
1610 * @param __k1 Iterator referencing start of range to insert.
1611 * @param __k2 Iterator referencing end of range to insert.
1612 * @return Reference to this string.
1613 * @throw std::length_error If new length exceeds @c max_size().
1615 * Removes the characters in the range [__i1,__i2). In place,
1616 * characters in the range [__k1,__k2) are inserted. If the
1617 * length of result exceeds max_size(), length_error is thrown.
1618 * The value of the string doesn't change if an error is
1621 template<class _InputIterator
>
1623 replace(iterator __i1
, iterator __i2
,
1624 _InputIterator __k1
, _InputIterator __k2
)
1626 _GLIBCXX_DEBUG_PEDASSERT(_M_ibegin() <= __i1
&& __i1
<= __i2
1627 && __i2
<= _M_iend());
1628 __glibcxx_requires_valid_range(__k1
, __k2
);
1629 typedef typename
std::__is_integer
<_InputIterator
>::__type _Integral
;
1630 return _M_replace_dispatch(__i1
, __i2
, __k1
, __k2
, _Integral());
1633 // Specializations for the common case of pointer and iterator:
1634 // useful to avoid the overhead of temporary buffering in _M_replace.
1636 replace(iterator __i1
, iterator __i2
, _CharT
* __k1
, _CharT
* __k2
)
1638 _GLIBCXX_DEBUG_PEDASSERT(_M_ibegin() <= __i1
&& __i1
<= __i2
1639 && __i2
<= _M_iend());
1640 __glibcxx_requires_valid_range(__k1
, __k2
);
1641 return this->replace(__i1
- _M_ibegin(), __i2
- __i1
,
1646 replace(iterator __i1
, iterator __i2
,
1647 const _CharT
* __k1
, const _CharT
* __k2
)
1649 _GLIBCXX_DEBUG_PEDASSERT(_M_ibegin() <= __i1
&& __i1
<= __i2
1650 && __i2
<= _M_iend());
1651 __glibcxx_requires_valid_range(__k1
, __k2
);
1652 return this->replace(__i1
- _M_ibegin(), __i2
- __i1
,
1657 replace(iterator __i1
, iterator __i2
, iterator __k1
, iterator __k2
)
1659 _GLIBCXX_DEBUG_PEDASSERT(_M_ibegin() <= __i1
&& __i1
<= __i2
1660 && __i2
<= _M_iend());
1661 __glibcxx_requires_valid_range(__k1
, __k2
);
1662 return this->replace(__i1
- _M_ibegin(), __i2
- __i1
,
1663 __k1
.base(), __k2
- __k1
);
1667 replace(iterator __i1
, iterator __i2
,
1668 const_iterator __k1
, const_iterator __k2
)
1670 _GLIBCXX_DEBUG_PEDASSERT(_M_ibegin() <= __i1
&& __i1
<= __i2
1671 && __i2
<= _M_iend());
1672 __glibcxx_requires_valid_range(__k1
, __k2
);
1673 return this->replace(__i1
- _M_ibegin(), __i2
- __i1
,
1674 __k1
.base(), __k2
- __k1
);
1677 #if __cplusplus >= 201103L
1679 * @brief Replace range of characters with initializer_list.
1680 * @param __i1 Iterator referencing start of range to replace.
1681 * @param __i2 Iterator referencing end of range to replace.
1682 * @param __l The initializer_list of characters to insert.
1683 * @return Reference to this string.
1684 * @throw std::length_error If new length exceeds @c max_size().
1686 * Removes the characters in the range [__i1,__i2). In place,
1687 * characters in the range [__k1,__k2) are inserted. If the
1688 * length of result exceeds max_size(), length_error is thrown.
1689 * The value of the string doesn't change if an error is
1692 basic_string
& replace(iterator __i1
, iterator __i2
,
1693 initializer_list
<_CharT
> __l
)
1694 { return this->replace(__i1
, __i2
, __l
.begin(), __l
.end()); }
1698 template<class _Integer
>
1700 _M_replace_dispatch(iterator __i1
, iterator __i2
, _Integer __n
,
1701 _Integer __val
, __true_type
)
1702 { return _M_replace_aux(__i1
- _M_ibegin(), __i2
- __i1
, __n
, __val
); }
1704 template<class _InputIterator
>
1706 _M_replace_dispatch(iterator __i1
, iterator __i2
, _InputIterator __k1
,
1707 _InputIterator __k2
, __false_type
);
1710 _M_replace_aux(size_type __pos1
, size_type __n1
, size_type __n2
,
1714 _M_replace_safe(size_type __pos1
, size_type __n1
, const _CharT
* __s
,
1717 // _S_construct_aux is used to implement the 21.3.1 para 15 which
1718 // requires special behaviour if _InIter is an integral type
1719 template<class _InIterator
>
1721 _S_construct_aux(_InIterator __beg
, _InIterator __end
,
1722 const _Alloc
& __a
, __false_type
)
1724 typedef typename iterator_traits
<_InIterator
>::iterator_category _Tag
;
1725 return _S_construct(__beg
, __end
, __a
, _Tag());
1728 // _GLIBCXX_RESOLVE_LIB_DEFECTS
1729 // 438. Ambiguity in the "do the right thing" clause
1730 template<class _Integer
>
1732 _S_construct_aux(_Integer __beg
, _Integer __end
,
1733 const _Alloc
& __a
, __true_type
)
1734 { return _S_construct_aux_2(static_cast<size_type
>(__beg
),
1738 _S_construct_aux_2(size_type __req
, _CharT __c
, const _Alloc
& __a
)
1739 { return _S_construct(__req
, __c
, __a
); }
1741 template<class _InIterator
>
1743 _S_construct(_InIterator __beg
, _InIterator __end
, const _Alloc
& __a
)
1745 typedef typename
std::__is_integer
<_InIterator
>::__type _Integral
;
1746 return _S_construct_aux(__beg
, __end
, __a
, _Integral());
1749 // For Input Iterators, used in istreambuf_iterators, etc.
1750 template<class _InIterator
>
1752 _S_construct(_InIterator __beg
, _InIterator __end
, const _Alloc
& __a
,
1753 input_iterator_tag
);
1755 // For forward_iterators up to random_access_iterators, used for
1756 // string::iterator, _CharT*, etc.
1757 template<class _FwdIterator
>
1759 _S_construct(_FwdIterator __beg
, _FwdIterator __end
, const _Alloc
& __a
,
1760 forward_iterator_tag
);
1763 _S_construct(size_type __req
, _CharT __c
, const _Alloc
& __a
);
1768 * @brief Copy substring into C string.
1769 * @param __s C string to copy value into.
1770 * @param __n Number of characters to copy.
1771 * @param __pos Index of first character to copy.
1772 * @return Number of characters actually copied
1773 * @throw std::out_of_range If __pos > size().
1775 * Copies up to @a __n characters starting at @a __pos into the
1776 * C string @a __s. If @a __pos is %greater than size(),
1777 * out_of_range is thrown.
1780 copy(_CharT
* __s
, size_type __n
, size_type __pos
= 0) const;
1783 * @brief Swap contents with another string.
1784 * @param __s String to swap with.
1786 * Exchanges the contents of this string with that of @a __s in constant
1790 swap(basic_string
& __s
);
1792 // String operations:
1794 * @brief Return const pointer to null-terminated contents.
1796 * This is a handle to internal data. Do not modify or dire things may
1800 c_str() const _GLIBCXX_NOEXCEPT
1801 { return _M_data(); }
1804 * @brief Return const pointer to contents.
1806 * This is a handle to internal data. Do not modify or dire things may
1810 data() const _GLIBCXX_NOEXCEPT
1811 { return _M_data(); }
1814 * @brief Return copy of allocator used to construct this string.
1817 get_allocator() const _GLIBCXX_NOEXCEPT
1818 { return _M_dataplus
; }
1821 * @brief Find position of a C substring.
1822 * @param __s C string to locate.
1823 * @param __pos Index of character to search from.
1824 * @param __n Number of characters from @a s to search for.
1825 * @return Index of start of first occurrence.
1827 * Starting from @a __pos, searches forward for the first @a
1828 * __n characters in @a __s within this string. If found,
1829 * returns the index where it begins. If not found, returns
1833 find(const _CharT
* __s
, size_type __pos
, size_type __n
) const;
1836 * @brief Find position of a string.
1837 * @param __str String to locate.
1838 * @param __pos Index of character to search from (default 0).
1839 * @return Index of start of first occurrence.
1841 * Starting from @a __pos, searches forward for value of @a __str within
1842 * this string. If found, returns the index where it begins. If not
1843 * found, returns npos.
1846 find(const basic_string
& __str
, size_type __pos
= 0) const
1848 { return this->find(__str
.data(), __pos
, __str
.size()); }
1851 * @brief Find position of a C string.
1852 * @param __s C string to locate.
1853 * @param __pos Index of character to search from (default 0).
1854 * @return Index of start of first occurrence.
1856 * Starting from @a __pos, searches forward for the value of @a
1857 * __s within this string. If found, returns the index where
1858 * it begins. If not found, returns npos.
1861 find(const _CharT
* __s
, size_type __pos
= 0) const
1863 __glibcxx_requires_string(__s
);
1864 return this->find(__s
, __pos
, traits_type::length(__s
));
1868 * @brief Find position of a character.
1869 * @param __c Character to locate.
1870 * @param __pos Index of character to search from (default 0).
1871 * @return Index of first occurrence.
1873 * Starting from @a __pos, searches forward for @a __c within
1874 * this string. If found, returns the index where it was
1875 * found. If not found, returns npos.
1878 find(_CharT __c
, size_type __pos
= 0) const _GLIBCXX_NOEXCEPT
;
1881 * @brief Find last position of a string.
1882 * @param __str String to locate.
1883 * @param __pos Index of character to search back from (default end).
1884 * @return Index of start of last occurrence.
1886 * Starting from @a __pos, searches backward for value of @a
1887 * __str within this string. If found, returns the index where
1888 * it begins. If not found, returns npos.
1891 rfind(const basic_string
& __str
, size_type __pos
= npos
) const
1893 { return this->rfind(__str
.data(), __pos
, __str
.size()); }
1896 * @brief Find last position of a C substring.
1897 * @param __s C string to locate.
1898 * @param __pos Index of character to search back from.
1899 * @param __n Number of characters from s to search for.
1900 * @return Index of start of last occurrence.
1902 * Starting from @a __pos, searches backward for the first @a
1903 * __n characters in @a __s within this string. If found,
1904 * returns the index where it begins. If not found, returns
1908 rfind(const _CharT
* __s
, size_type __pos
, size_type __n
) const;
1911 * @brief Find last position of a C string.
1912 * @param __s C string to locate.
1913 * @param __pos Index of character to start search at (default end).
1914 * @return Index of start of last occurrence.
1916 * Starting from @a __pos, searches backward for the value of
1917 * @a __s within this string. If found, returns the index
1918 * where it begins. If not found, returns npos.
1921 rfind(const _CharT
* __s
, size_type __pos
= npos
) const
1923 __glibcxx_requires_string(__s
);
1924 return this->rfind(__s
, __pos
, traits_type::length(__s
));
1928 * @brief Find last position of a character.
1929 * @param __c Character to locate.
1930 * @param __pos Index of character to search back from (default end).
1931 * @return Index of last occurrence.
1933 * Starting from @a __pos, searches backward for @a __c within
1934 * this string. If found, returns the index where it was
1935 * found. If not found, returns npos.
1938 rfind(_CharT __c
, size_type __pos
= npos
) const _GLIBCXX_NOEXCEPT
;
1941 * @brief Find position of a character of string.
1942 * @param __str String containing characters to locate.
1943 * @param __pos Index of character to search from (default 0).
1944 * @return Index of first occurrence.
1946 * Starting from @a __pos, searches forward for one of the
1947 * characters of @a __str within this string. If found,
1948 * returns the index where it was found. If not found, returns
1952 find_first_of(const basic_string
& __str
, size_type __pos
= 0) const
1954 { return this->find_first_of(__str
.data(), __pos
, __str
.size()); }
1957 * @brief Find position of a character of C substring.
1958 * @param __s String containing characters to locate.
1959 * @param __pos Index of character to search from.
1960 * @param __n Number of characters from s to search for.
1961 * @return Index of first occurrence.
1963 * Starting from @a __pos, searches forward for one of the
1964 * first @a __n characters of @a __s within this string. If
1965 * found, returns the index where it was found. If not found,
1969 find_first_of(const _CharT
* __s
, size_type __pos
, size_type __n
) const;
1972 * @brief Find position of a character of C string.
1973 * @param __s String containing characters to locate.
1974 * @param __pos Index of character to search from (default 0).
1975 * @return Index of first occurrence.
1977 * Starting from @a __pos, searches forward for one of the
1978 * characters of @a __s within this string. If found, returns
1979 * the index where it was found. If not found, returns npos.
1982 find_first_of(const _CharT
* __s
, size_type __pos
= 0) const
1984 __glibcxx_requires_string(__s
);
1985 return this->find_first_of(__s
, __pos
, traits_type::length(__s
));
1989 * @brief Find position of a character.
1990 * @param __c Character to locate.
1991 * @param __pos Index of character to search from (default 0).
1992 * @return Index of first occurrence.
1994 * Starting from @a __pos, searches forward for the character
1995 * @a __c within this string. If found, returns the index
1996 * where it was found. If not found, returns npos.
1998 * Note: equivalent to find(__c, __pos).
2001 find_first_of(_CharT __c
, size_type __pos
= 0) const _GLIBCXX_NOEXCEPT
2002 { return this->find(__c
, __pos
); }
2005 * @brief Find last position of a character of string.
2006 * @param __str String containing characters to locate.
2007 * @param __pos Index of character to search back from (default end).
2008 * @return Index of last occurrence.
2010 * Starting from @a __pos, searches backward for one of the
2011 * characters of @a __str within this string. If found,
2012 * returns the index where it was found. If not found, returns
2016 find_last_of(const basic_string
& __str
, size_type __pos
= npos
) const
2018 { return this->find_last_of(__str
.data(), __pos
, __str
.size()); }
2021 * @brief Find last position of a character of C substring.
2022 * @param __s C string containing characters to locate.
2023 * @param __pos Index of character to search back from.
2024 * @param __n Number of characters from s to search for.
2025 * @return Index of last occurrence.
2027 * Starting from @a __pos, searches backward for one of the
2028 * first @a __n characters of @a __s within this string. If
2029 * found, returns the index where it was found. If not found,
2033 find_last_of(const _CharT
* __s
, size_type __pos
, size_type __n
) const;
2036 * @brief Find last position of a character of C string.
2037 * @param __s C string containing characters to locate.
2038 * @param __pos Index of character to search back from (default end).
2039 * @return Index of last occurrence.
2041 * Starting from @a __pos, searches backward for one of the
2042 * characters of @a __s within this string. If found, returns
2043 * the index where it was found. If not found, returns npos.
2046 find_last_of(const _CharT
* __s
, size_type __pos
= npos
) const
2048 __glibcxx_requires_string(__s
);
2049 return this->find_last_of(__s
, __pos
, traits_type::length(__s
));
2053 * @brief Find last position of a character.
2054 * @param __c Character to locate.
2055 * @param __pos Index of character to search back from (default end).
2056 * @return Index of last occurrence.
2058 * Starting from @a __pos, searches backward for @a __c within
2059 * this string. If found, returns the index where it was
2060 * found. If not found, returns npos.
2062 * Note: equivalent to rfind(__c, __pos).
2065 find_last_of(_CharT __c
, size_type __pos
= npos
) const _GLIBCXX_NOEXCEPT
2066 { return this->rfind(__c
, __pos
); }
2069 * @brief Find position of a character not in string.
2070 * @param __str String containing characters to avoid.
2071 * @param __pos Index of character to search from (default 0).
2072 * @return Index of first occurrence.
2074 * Starting from @a __pos, searches forward for a character not contained
2075 * in @a __str within this string. If found, returns the index where it
2076 * was found. If not found, returns npos.
2079 find_first_not_of(const basic_string
& __str
, size_type __pos
= 0) const
2081 { return this->find_first_not_of(__str
.data(), __pos
, __str
.size()); }
2084 * @brief Find position of a character not in C substring.
2085 * @param __s C string containing characters to avoid.
2086 * @param __pos Index of character to search from.
2087 * @param __n Number of characters from __s to consider.
2088 * @return Index of first occurrence.
2090 * Starting from @a __pos, searches forward for a character not
2091 * contained in the first @a __n characters of @a __s within
2092 * this string. If found, returns the index where it was
2093 * found. If not found, returns npos.
2096 find_first_not_of(const _CharT
* __s
, size_type __pos
,
2097 size_type __n
) const;
2100 * @brief Find position of a character not in C string.
2101 * @param __s C string containing characters to avoid.
2102 * @param __pos Index of character to search from (default 0).
2103 * @return Index of first occurrence.
2105 * Starting from @a __pos, searches forward for a character not
2106 * contained in @a __s within this string. If found, returns
2107 * the index where it was found. If not found, returns npos.
2110 find_first_not_of(const _CharT
* __s
, size_type __pos
= 0) const
2112 __glibcxx_requires_string(__s
);
2113 return this->find_first_not_of(__s
, __pos
, traits_type::length(__s
));
2117 * @brief Find position of a different character.
2118 * @param __c Character to avoid.
2119 * @param __pos Index of character to search from (default 0).
2120 * @return Index of first occurrence.
2122 * Starting from @a __pos, searches forward for a character
2123 * other than @a __c within this string. If found, returns the
2124 * index where it was found. If not found, returns npos.
2127 find_first_not_of(_CharT __c
, size_type __pos
= 0) const
2131 * @brief Find last position of a character not in string.
2132 * @param __str String containing characters to avoid.
2133 * @param __pos Index of character to search back from (default end).
2134 * @return Index of last occurrence.
2136 * Starting from @a __pos, searches backward for a character
2137 * not contained in @a __str within this string. If found,
2138 * returns the index where it was found. If not found, returns
2142 find_last_not_of(const basic_string
& __str
, size_type __pos
= npos
) const
2144 { return this->find_last_not_of(__str
.data(), __pos
, __str
.size()); }
2147 * @brief Find last position of a character not in C substring.
2148 * @param __s C string containing characters to avoid.
2149 * @param __pos Index of character to search back from.
2150 * @param __n Number of characters from s to consider.
2151 * @return Index of last occurrence.
2153 * Starting from @a __pos, searches backward for a character not
2154 * contained in the first @a __n characters of @a __s within this string.
2155 * If found, returns the index where it was found. If not found,
2159 find_last_not_of(const _CharT
* __s
, size_type __pos
,
2160 size_type __n
) const;
2162 * @brief Find last position of a character not in C string.
2163 * @param __s C string containing characters to avoid.
2164 * @param __pos Index of character to search back from (default end).
2165 * @return Index of last occurrence.
2167 * Starting from @a __pos, searches backward for a character
2168 * not contained in @a __s within this string. If found,
2169 * returns the index where it was found. If not found, returns
2173 find_last_not_of(const _CharT
* __s
, size_type __pos
= npos
) const
2175 __glibcxx_requires_string(__s
);
2176 return this->find_last_not_of(__s
, __pos
, traits_type::length(__s
));
2180 * @brief Find last position of a different character.
2181 * @param __c Character to avoid.
2182 * @param __pos Index of character to search back from (default end).
2183 * @return Index of last occurrence.
2185 * Starting from @a __pos, searches backward for a character other than
2186 * @a __c within this string. If found, returns the index where it was
2187 * found. If not found, returns npos.
2190 find_last_not_of(_CharT __c
, size_type __pos
= npos
) const
2194 * @brief Get a substring.
2195 * @param __pos Index of first character (default 0).
2196 * @param __n Number of characters in substring (default remainder).
2197 * @return The new string.
2198 * @throw std::out_of_range If __pos > size().
2200 * Construct and return a new string using the @a __n
2201 * characters starting at @a __pos. If the string is too
2202 * short, use the remainder of the characters. If @a __pos is
2203 * beyond the end of the string, out_of_range is thrown.
2206 substr(size_type __pos
= 0, size_type __n
= npos
) const
2207 { return basic_string(*this,
2208 _M_check(__pos
, "basic_string::substr"), __n
); }
2211 * @brief Compare to a string.
2212 * @param __str String to compare against.
2213 * @return Integer < 0, 0, or > 0.
2215 * Returns an integer < 0 if this string is ordered before @a
2216 * __str, 0 if their values are equivalent, or > 0 if this
2217 * string is ordered after @a __str. Determines the effective
2218 * length rlen of the strings to compare as the smallest of
2219 * size() and str.size(). The function then compares the two
2220 * strings by calling traits::compare(data(), str.data(),rlen).
2221 * If the result of the comparison is nonzero returns it,
2222 * otherwise the shorter one is ordered first.
2225 compare(const basic_string
& __str
) const
2227 const size_type __size
= this->size();
2228 const size_type __osize
= __str
.size();
2229 const size_type __len
= std::min(__size
, __osize
);
2231 int __r
= traits_type::compare(_M_data(), __str
.data(), __len
);
2233 __r
= _S_compare(__size
, __osize
);
2238 * @brief Compare substring to a string.
2239 * @param __pos Index of first character of substring.
2240 * @param __n Number of characters in substring.
2241 * @param __str String to compare against.
2242 * @return Integer < 0, 0, or > 0.
2244 * Form the substring of this string from the @a __n characters
2245 * starting at @a __pos. Returns an integer < 0 if the
2246 * substring is ordered before @a __str, 0 if their values are
2247 * equivalent, or > 0 if the substring is ordered after @a
2248 * __str. Determines the effective length rlen of the strings
2249 * to compare as the smallest of the length of the substring
2250 * and @a __str.size(). The function then compares the two
2251 * strings by calling
2252 * traits::compare(substring.data(),str.data(),rlen). If the
2253 * result of the comparison is nonzero returns it, otherwise
2254 * the shorter one is ordered first.
2257 compare(size_type __pos
, size_type __n
, const basic_string
& __str
) const;
2260 * @brief Compare substring to a substring.
2261 * @param __pos1 Index of first character of substring.
2262 * @param __n1 Number of characters in substring.
2263 * @param __str String to compare against.
2264 * @param __pos2 Index of first character of substring of str.
2265 * @param __n2 Number of characters in substring of str.
2266 * @return Integer < 0, 0, or > 0.
2268 * Form the substring of this string from the @a __n1
2269 * characters starting at @a __pos1. Form the substring of @a
2270 * __str from the @a __n2 characters starting at @a __pos2.
2271 * Returns an integer < 0 if this substring is ordered before
2272 * the substring of @a __str, 0 if their values are equivalent,
2273 * or > 0 if this substring is ordered after the substring of
2274 * @a __str. Determines the effective length rlen of the
2275 * strings to compare as the smallest of the lengths of the
2276 * substrings. The function then compares the two strings by
2278 * traits::compare(substring.data(),str.substr(pos2,n2).data(),rlen).
2279 * If the result of the comparison is nonzero returns it,
2280 * otherwise the shorter one is ordered first.
2283 compare(size_type __pos1
, size_type __n1
, const basic_string
& __str
,
2284 size_type __pos2
, size_type __n2
) const;
2287 * @brief Compare to a C string.
2288 * @param __s C string to compare against.
2289 * @return Integer < 0, 0, or > 0.
2291 * Returns an integer < 0 if this string is ordered before @a __s, 0 if
2292 * their values are equivalent, or > 0 if this string is ordered after
2293 * @a __s. Determines the effective length rlen of the strings to
2294 * compare as the smallest of size() and the length of a string
2295 * constructed from @a __s. The function then compares the two strings
2296 * by calling traits::compare(data(),s,rlen). If the result of the
2297 * comparison is nonzero returns it, otherwise the shorter one is
2301 compare(const _CharT
* __s
) const;
2303 // _GLIBCXX_RESOLVE_LIB_DEFECTS
2304 // 5 String::compare specification questionable
2306 * @brief Compare substring to a C string.
2307 * @param __pos Index of first character of substring.
2308 * @param __n1 Number of characters in substring.
2309 * @param __s C string to compare against.
2310 * @return Integer < 0, 0, or > 0.
2312 * Form the substring of this string from the @a __n1
2313 * characters starting at @a pos. Returns an integer < 0 if
2314 * the substring is ordered before @a __s, 0 if their values
2315 * are equivalent, or > 0 if the substring is ordered after @a
2316 * __s. Determines the effective length rlen of the strings to
2317 * compare as the smallest of the length of the substring and
2318 * the length of a string constructed from @a __s. The
2319 * function then compares the two string by calling
2320 * traits::compare(substring.data(),__s,rlen). If the result of
2321 * the comparison is nonzero returns it, otherwise the shorter
2322 * one is ordered first.
2325 compare(size_type __pos
, size_type __n1
, const _CharT
* __s
) const;
2328 * @brief Compare substring against a character %array.
2329 * @param __pos Index of first character of substring.
2330 * @param __n1 Number of characters in substring.
2331 * @param __s character %array to compare against.
2332 * @param __n2 Number of characters of s.
2333 * @return Integer < 0, 0, or > 0.
2335 * Form the substring of this string from the @a __n1
2336 * characters starting at @a __pos. Form a string from the
2337 * first @a __n2 characters of @a __s. Returns an integer < 0
2338 * if this substring is ordered before the string from @a __s,
2339 * 0 if their values are equivalent, or > 0 if this substring
2340 * is ordered after the string from @a __s. Determines the
2341 * effective length rlen of the strings to compare as the
2342 * smallest of the length of the substring and @a __n2. The
2343 * function then compares the two strings by calling
2344 * traits::compare(substring.data(),s,rlen). If the result of
2345 * the comparison is nonzero returns it, otherwise the shorter
2346 * one is ordered first.
2348 * NB: s must have at least n2 characters, '\\0' has
2349 * no special meaning.
2352 compare(size_type __pos
, size_type __n1
, const _CharT
* __s
,
2353 size_type __n2
) const;
2358 * @brief Concatenate two strings.
2359 * @param __lhs First string.
2360 * @param __rhs Last string.
2361 * @return New string with value of @a __lhs followed by @a __rhs.
2363 template<typename _CharT
, typename _Traits
, typename _Alloc
>
2364 basic_string
<_CharT
, _Traits
, _Alloc
>
2365 operator+(const basic_string
<_CharT
, _Traits
, _Alloc
>& __lhs
,
2366 const basic_string
<_CharT
, _Traits
, _Alloc
>& __rhs
)
2368 basic_string
<_CharT
, _Traits
, _Alloc
> __str(__lhs
);
2369 __str
.append(__rhs
);
2374 * @brief Concatenate C string and string.
2375 * @param __lhs First string.
2376 * @param __rhs Last string.
2377 * @return New string with value of @a __lhs followed by @a __rhs.
2379 template<typename _CharT
, typename _Traits
, typename _Alloc
>
2380 basic_string
<_CharT
,_Traits
,_Alloc
>
2381 operator+(const _CharT
* __lhs
,
2382 const basic_string
<_CharT
,_Traits
,_Alloc
>& __rhs
);
2385 * @brief Concatenate character and string.
2386 * @param __lhs First string.
2387 * @param __rhs Last string.
2388 * @return New string with @a __lhs followed by @a __rhs.
2390 template<typename _CharT
, typename _Traits
, typename _Alloc
>
2391 basic_string
<_CharT
,_Traits
,_Alloc
>
2392 operator+(_CharT __lhs
, const basic_string
<_CharT
,_Traits
,_Alloc
>& __rhs
);
2395 * @brief Concatenate string and C string.
2396 * @param __lhs First string.
2397 * @param __rhs Last string.
2398 * @return New string with @a __lhs followed by @a __rhs.
2400 template<typename _CharT
, typename _Traits
, typename _Alloc
>
2401 inline basic_string
<_CharT
, _Traits
, _Alloc
>
2402 operator+(const basic_string
<_CharT
, _Traits
, _Alloc
>& __lhs
,
2403 const _CharT
* __rhs
)
2405 basic_string
<_CharT
, _Traits
, _Alloc
> __str(__lhs
);
2406 __str
.append(__rhs
);
2411 * @brief Concatenate string and character.
2412 * @param __lhs First string.
2413 * @param __rhs Last string.
2414 * @return New string with @a __lhs followed by @a __rhs.
2416 template<typename _CharT
, typename _Traits
, typename _Alloc
>
2417 inline basic_string
<_CharT
, _Traits
, _Alloc
>
2418 operator+(const basic_string
<_CharT
, _Traits
, _Alloc
>& __lhs
, _CharT __rhs
)
2420 typedef basic_string
<_CharT
, _Traits
, _Alloc
> __string_type
;
2421 typedef typename
__string_type::size_type __size_type
;
2422 __string_type
__str(__lhs
);
2423 __str
.append(__size_type(1), __rhs
);
2427 #if __cplusplus >= 201103L
2428 template<typename _CharT
, typename _Traits
, typename _Alloc
>
2429 inline basic_string
<_CharT
, _Traits
, _Alloc
>
2430 operator+(basic_string
<_CharT
, _Traits
, _Alloc
>&& __lhs
,
2431 const basic_string
<_CharT
, _Traits
, _Alloc
>& __rhs
)
2432 { return std::move(__lhs
.append(__rhs
)); }
2434 template<typename _CharT
, typename _Traits
, typename _Alloc
>
2435 inline basic_string
<_CharT
, _Traits
, _Alloc
>
2436 operator+(const basic_string
<_CharT
, _Traits
, _Alloc
>& __lhs
,
2437 basic_string
<_CharT
, _Traits
, _Alloc
>&& __rhs
)
2438 { return std::move(__rhs
.insert(0, __lhs
)); }
2440 template<typename _CharT
, typename _Traits
, typename _Alloc
>
2441 inline basic_string
<_CharT
, _Traits
, _Alloc
>
2442 operator+(basic_string
<_CharT
, _Traits
, _Alloc
>&& __lhs
,
2443 basic_string
<_CharT
, _Traits
, _Alloc
>&& __rhs
)
2445 const auto __size
= __lhs
.size() + __rhs
.size();
2446 const bool __cond
= (__size
> __lhs
.capacity()
2447 && __size
<= __rhs
.capacity());
2448 return __cond
? std::move(__rhs
.insert(0, __lhs
))
2449 : std::move(__lhs
.append(__rhs
));
2452 template<typename _CharT
, typename _Traits
, typename _Alloc
>
2453 inline basic_string
<_CharT
, _Traits
, _Alloc
>
2454 operator+(const _CharT
* __lhs
,
2455 basic_string
<_CharT
, _Traits
, _Alloc
>&& __rhs
)
2456 { return std::move(__rhs
.insert(0, __lhs
)); }
2458 template<typename _CharT
, typename _Traits
, typename _Alloc
>
2459 inline basic_string
<_CharT
, _Traits
, _Alloc
>
2460 operator+(_CharT __lhs
,
2461 basic_string
<_CharT
, _Traits
, _Alloc
>&& __rhs
)
2462 { return std::move(__rhs
.insert(0, 1, __lhs
)); }
2464 template<typename _CharT
, typename _Traits
, typename _Alloc
>
2465 inline basic_string
<_CharT
, _Traits
, _Alloc
>
2466 operator+(basic_string
<_CharT
, _Traits
, _Alloc
>&& __lhs
,
2467 const _CharT
* __rhs
)
2468 { return std::move(__lhs
.append(__rhs
)); }
2470 template<typename _CharT
, typename _Traits
, typename _Alloc
>
2471 inline basic_string
<_CharT
, _Traits
, _Alloc
>
2472 operator+(basic_string
<_CharT
, _Traits
, _Alloc
>&& __lhs
,
2474 { return std::move(__lhs
.append(1, __rhs
)); }
2479 * @brief Test equivalence of two strings.
2480 * @param __lhs First string.
2481 * @param __rhs Second string.
2482 * @return True if @a __lhs.compare(@a __rhs) == 0. False otherwise.
2484 template<typename _CharT
, typename _Traits
, typename _Alloc
>
2486 operator==(const basic_string
<_CharT
, _Traits
, _Alloc
>& __lhs
,
2487 const basic_string
<_CharT
, _Traits
, _Alloc
>& __rhs
)
2488 { return __lhs
.compare(__rhs
) == 0; }
2490 template<typename _CharT
>
2492 typename
__gnu_cxx::__enable_if
<__is_char
<_CharT
>::__value
, bool>::__type
2493 operator==(const basic_string
<_CharT
>& __lhs
,
2494 const basic_string
<_CharT
>& __rhs
)
2495 { return (__lhs
.size() == __rhs
.size()
2496 && !std::char_traits
<_CharT
>::compare(__lhs
.data(), __rhs
.data(),
2500 * @brief Test equivalence of C string and string.
2501 * @param __lhs C string.
2502 * @param __rhs String.
2503 * @return True if @a __rhs.compare(@a __lhs) == 0. False otherwise.
2505 template<typename _CharT
, typename _Traits
, typename _Alloc
>
2507 operator==(const _CharT
* __lhs
,
2508 const basic_string
<_CharT
, _Traits
, _Alloc
>& __rhs
)
2509 { return __rhs
.compare(__lhs
) == 0; }
2512 * @brief Test equivalence of string and C string.
2513 * @param __lhs String.
2514 * @param __rhs C string.
2515 * @return True if @a __lhs.compare(@a __rhs) == 0. False otherwise.
2517 template<typename _CharT
, typename _Traits
, typename _Alloc
>
2519 operator==(const basic_string
<_CharT
, _Traits
, _Alloc
>& __lhs
,
2520 const _CharT
* __rhs
)
2521 { return __lhs
.compare(__rhs
) == 0; }
2525 * @brief Test difference of two strings.
2526 * @param __lhs First string.
2527 * @param __rhs Second string.
2528 * @return True if @a __lhs.compare(@a __rhs) != 0. False otherwise.
2530 template<typename _CharT
, typename _Traits
, typename _Alloc
>
2532 operator!=(const basic_string
<_CharT
, _Traits
, _Alloc
>& __lhs
,
2533 const basic_string
<_CharT
, _Traits
, _Alloc
>& __rhs
)
2534 { return !(__lhs
== __rhs
); }
2537 * @brief Test difference of C string and string.
2538 * @param __lhs C string.
2539 * @param __rhs String.
2540 * @return True if @a __rhs.compare(@a __lhs) != 0. False otherwise.
2542 template<typename _CharT
, typename _Traits
, typename _Alloc
>
2544 operator!=(const _CharT
* __lhs
,
2545 const basic_string
<_CharT
, _Traits
, _Alloc
>& __rhs
)
2546 { return !(__lhs
== __rhs
); }
2549 * @brief Test difference of string and C string.
2550 * @param __lhs String.
2551 * @param __rhs C string.
2552 * @return True if @a __lhs.compare(@a __rhs) != 0. False otherwise.
2554 template<typename _CharT
, typename _Traits
, typename _Alloc
>
2556 operator!=(const basic_string
<_CharT
, _Traits
, _Alloc
>& __lhs
,
2557 const _CharT
* __rhs
)
2558 { return !(__lhs
== __rhs
); }
2562 * @brief Test if string precedes string.
2563 * @param __lhs First string.
2564 * @param __rhs Second string.
2565 * @return True if @a __lhs precedes @a __rhs. False otherwise.
2567 template<typename _CharT
, typename _Traits
, typename _Alloc
>
2569 operator<(const basic_string
<_CharT
, _Traits
, _Alloc
>& __lhs
,
2570 const basic_string
<_CharT
, _Traits
, _Alloc
>& __rhs
)
2571 { return __lhs
.compare(__rhs
) < 0; }
2574 * @brief Test if string precedes C string.
2575 * @param __lhs String.
2576 * @param __rhs C string.
2577 * @return True if @a __lhs precedes @a __rhs. False otherwise.
2579 template<typename _CharT
, typename _Traits
, typename _Alloc
>
2581 operator<(const basic_string
<_CharT
, _Traits
, _Alloc
>& __lhs
,
2582 const _CharT
* __rhs
)
2583 { return __lhs
.compare(__rhs
) < 0; }
2586 * @brief Test if C string precedes string.
2587 * @param __lhs C string.
2588 * @param __rhs String.
2589 * @return True if @a __lhs precedes @a __rhs. False otherwise.
2591 template<typename _CharT
, typename _Traits
, typename _Alloc
>
2593 operator<(const _CharT
* __lhs
,
2594 const basic_string
<_CharT
, _Traits
, _Alloc
>& __rhs
)
2595 { return __rhs
.compare(__lhs
) > 0; }
2599 * @brief Test if string follows string.
2600 * @param __lhs First string.
2601 * @param __rhs Second string.
2602 * @return True if @a __lhs follows @a __rhs. False otherwise.
2604 template<typename _CharT
, typename _Traits
, typename _Alloc
>
2606 operator>(const basic_string
<_CharT
, _Traits
, _Alloc
>& __lhs
,
2607 const basic_string
<_CharT
, _Traits
, _Alloc
>& __rhs
)
2608 { return __lhs
.compare(__rhs
) > 0; }
2611 * @brief Test if string follows C string.
2612 * @param __lhs String.
2613 * @param __rhs C string.
2614 * @return True if @a __lhs follows @a __rhs. False otherwise.
2616 template<typename _CharT
, typename _Traits
, typename _Alloc
>
2618 operator>(const basic_string
<_CharT
, _Traits
, _Alloc
>& __lhs
,
2619 const _CharT
* __rhs
)
2620 { return __lhs
.compare(__rhs
) > 0; }
2623 * @brief Test if C string follows string.
2624 * @param __lhs C string.
2625 * @param __rhs String.
2626 * @return True if @a __lhs follows @a __rhs. False otherwise.
2628 template<typename _CharT
, typename _Traits
, typename _Alloc
>
2630 operator>(const _CharT
* __lhs
,
2631 const basic_string
<_CharT
, _Traits
, _Alloc
>& __rhs
)
2632 { return __rhs
.compare(__lhs
) < 0; }
2636 * @brief Test if string doesn't follow string.
2637 * @param __lhs First string.
2638 * @param __rhs Second string.
2639 * @return True if @a __lhs doesn't follow @a __rhs. False otherwise.
2641 template<typename _CharT
, typename _Traits
, typename _Alloc
>
2643 operator<=(const basic_string
<_CharT
, _Traits
, _Alloc
>& __lhs
,
2644 const basic_string
<_CharT
, _Traits
, _Alloc
>& __rhs
)
2645 { return __lhs
.compare(__rhs
) <= 0; }
2648 * @brief Test if string doesn't follow C string.
2649 * @param __lhs String.
2650 * @param __rhs C string.
2651 * @return True if @a __lhs doesn't follow @a __rhs. False otherwise.
2653 template<typename _CharT
, typename _Traits
, typename _Alloc
>
2655 operator<=(const basic_string
<_CharT
, _Traits
, _Alloc
>& __lhs
,
2656 const _CharT
* __rhs
)
2657 { return __lhs
.compare(__rhs
) <= 0; }
2660 * @brief Test if C string doesn't follow string.
2661 * @param __lhs C string.
2662 * @param __rhs String.
2663 * @return True if @a __lhs doesn't follow @a __rhs. False otherwise.
2665 template<typename _CharT
, typename _Traits
, typename _Alloc
>
2667 operator<=(const _CharT
* __lhs
,
2668 const basic_string
<_CharT
, _Traits
, _Alloc
>& __rhs
)
2669 { return __rhs
.compare(__lhs
) >= 0; }
2673 * @brief Test if string doesn't precede string.
2674 * @param __lhs First string.
2675 * @param __rhs Second string.
2676 * @return True if @a __lhs doesn't precede @a __rhs. False otherwise.
2678 template<typename _CharT
, typename _Traits
, typename _Alloc
>
2680 operator>=(const basic_string
<_CharT
, _Traits
, _Alloc
>& __lhs
,
2681 const basic_string
<_CharT
, _Traits
, _Alloc
>& __rhs
)
2682 { return __lhs
.compare(__rhs
) >= 0; }
2685 * @brief Test if string doesn't precede C string.
2686 * @param __lhs String.
2687 * @param __rhs C string.
2688 * @return True if @a __lhs doesn't precede @a __rhs. False otherwise.
2690 template<typename _CharT
, typename _Traits
, typename _Alloc
>
2692 operator>=(const basic_string
<_CharT
, _Traits
, _Alloc
>& __lhs
,
2693 const _CharT
* __rhs
)
2694 { return __lhs
.compare(__rhs
) >= 0; }
2697 * @brief Test if C string doesn't precede string.
2698 * @param __lhs C string.
2699 * @param __rhs String.
2700 * @return True if @a __lhs doesn't precede @a __rhs. False otherwise.
2702 template<typename _CharT
, typename _Traits
, typename _Alloc
>
2704 operator>=(const _CharT
* __lhs
,
2705 const basic_string
<_CharT
, _Traits
, _Alloc
>& __rhs
)
2706 { return __rhs
.compare(__lhs
) <= 0; }
2709 * @brief Swap contents of two strings.
2710 * @param __lhs First string.
2711 * @param __rhs Second string.
2713 * Exchanges the contents of @a __lhs and @a __rhs in constant time.
2715 template<typename _CharT
, typename _Traits
, typename _Alloc
>
2717 swap(basic_string
<_CharT
, _Traits
, _Alloc
>& __lhs
,
2718 basic_string
<_CharT
, _Traits
, _Alloc
>& __rhs
)
2719 { __lhs
.swap(__rhs
); }
2722 * @brief Read stream into a string.
2723 * @param __is Input stream.
2724 * @param __str Buffer to store into.
2725 * @return Reference to the input stream.
2727 * Stores characters from @a __is into @a __str until whitespace is
2728 * found, the end of the stream is encountered, or str.max_size()
2729 * is reached. If is.width() is non-zero, that is the limit on the
2730 * number of characters stored into @a __str. Any previous
2731 * contents of @a __str are erased.
2733 template<typename _CharT
, typename _Traits
, typename _Alloc
>
2734 basic_istream
<_CharT
, _Traits
>&
2735 operator>>(basic_istream
<_CharT
, _Traits
>& __is
,
2736 basic_string
<_CharT
, _Traits
, _Alloc
>& __str
);
2739 basic_istream
<char>&
2740 operator>>(basic_istream
<char>& __is
, basic_string
<char>& __str
);
2743 * @brief Write string to a stream.
2744 * @param __os Output stream.
2745 * @param __str String to write out.
2746 * @return Reference to the output stream.
2748 * Output characters of @a __str into os following the same rules as for
2749 * writing a C string.
2751 template<typename _CharT
, typename _Traits
, typename _Alloc
>
2752 inline basic_ostream
<_CharT
, _Traits
>&
2753 operator<<(basic_ostream
<_CharT
, _Traits
>& __os
,
2754 const basic_string
<_CharT
, _Traits
, _Alloc
>& __str
)
2756 // _GLIBCXX_RESOLVE_LIB_DEFECTS
2757 // 586. string inserter not a formatted function
2758 return __ostream_insert(__os
, __str
.data(), __str
.size());
2762 * @brief Read a line from stream into a string.
2763 * @param __is Input stream.
2764 * @param __str Buffer to store into.
2765 * @param __delim Character marking end of line.
2766 * @return Reference to the input stream.
2768 * Stores characters from @a __is into @a __str until @a __delim is
2769 * found, the end of the stream is encountered, or str.max_size()
2770 * is reached. Any previous contents of @a __str are erased. If
2771 * @a __delim is encountered, it is extracted but not stored into
2774 template<typename _CharT
, typename _Traits
, typename _Alloc
>
2775 basic_istream
<_CharT
, _Traits
>&
2776 getline(basic_istream
<_CharT
, _Traits
>& __is
,
2777 basic_string
<_CharT
, _Traits
, _Alloc
>& __str
, _CharT __delim
);
2780 * @brief Read a line from stream into a string.
2781 * @param __is Input stream.
2782 * @param __str Buffer to store into.
2783 * @return Reference to the input stream.
2785 * Stores characters from is into @a __str until '\n' is
2786 * found, the end of the stream is encountered, or str.max_size()
2787 * is reached. Any previous contents of @a __str are erased. If
2788 * end of line is encountered, it is extracted but not stored into
2791 template<typename _CharT
, typename _Traits
, typename _Alloc
>
2792 inline basic_istream
<_CharT
, _Traits
>&
2793 getline(basic_istream
<_CharT
, _Traits
>& __is
,
2794 basic_string
<_CharT
, _Traits
, _Alloc
>& __str
)
2795 { return getline(__is
, __str
, __is
.widen('\n')); }
2798 basic_istream
<char>&
2799 getline(basic_istream
<char>& __in
, basic_string
<char>& __str
,
2802 #ifdef _GLIBCXX_USE_WCHAR_T
2804 basic_istream
<wchar_t>&
2805 getline(basic_istream
<wchar_t>& __in
, basic_string
<wchar_t>& __str
,
2809 _GLIBCXX_END_NAMESPACE_VERSION
2812 #if ((__cplusplus >= 201103L) && defined(_GLIBCXX_USE_C99) \
2813 && !defined(_GLIBCXX_HAVE_BROKEN_VSWPRINTF))
2815 #include <ext/string_conversions.h>
2817 namespace std
_GLIBCXX_VISIBILITY(default)
2819 _GLIBCXX_BEGIN_NAMESPACE_VERSION
2821 // 21.4 Numeric Conversions [string.conversions].
2823 stoi(const string
& __str
, size_t* __idx
= 0, int __base
= 10)
2824 { return __gnu_cxx::__stoa
<long, int>(&std::strtol
, "stoi", __str
.c_str(),
2828 stol(const string
& __str
, size_t* __idx
= 0, int __base
= 10)
2829 { return __gnu_cxx::__stoa(&std::strtol
, "stol", __str
.c_str(),
2832 inline unsigned long
2833 stoul(const string
& __str
, size_t* __idx
= 0, int __base
= 10)
2834 { return __gnu_cxx::__stoa(&std::strtoul
, "stoul", __str
.c_str(),
2838 stoll(const string
& __str
, size_t* __idx
= 0, int __base
= 10)
2839 { return __gnu_cxx::__stoa(&std::strtoll
, "stoll", __str
.c_str(),
2842 inline unsigned long long
2843 stoull(const string
& __str
, size_t* __idx
= 0, int __base
= 10)
2844 { return __gnu_cxx::__stoa(&std::strtoull
, "stoull", __str
.c_str(),
2847 // NB: strtof vs strtod.
2849 stof(const string
& __str
, size_t* __idx
= 0)
2850 { return __gnu_cxx::__stoa(&std::strtof
, "stof", __str
.c_str(), __idx
); }
2853 stod(const string
& __str
, size_t* __idx
= 0)
2854 { return __gnu_cxx::__stoa(&std::strtod
, "stod", __str
.c_str(), __idx
); }
2857 stold(const string
& __str
, size_t* __idx
= 0)
2858 { return __gnu_cxx::__stoa(&std::strtold
, "stold", __str
.c_str(), __idx
); }
2860 // NB: (v)snprintf vs sprintf.
2864 to_string(int __val
)
2865 { return __gnu_cxx::__to_xstring
<string
>(&std::vsnprintf
, 4 * sizeof(int),
2869 to_string(unsigned __val
)
2870 { return __gnu_cxx::__to_xstring
<string
>(&std::vsnprintf
,
2871 4 * sizeof(unsigned),
2875 to_string(long __val
)
2876 { return __gnu_cxx::__to_xstring
<string
>(&std::vsnprintf
, 4 * sizeof(long),
2880 to_string(unsigned long __val
)
2881 { return __gnu_cxx::__to_xstring
<string
>(&std::vsnprintf
,
2882 4 * sizeof(unsigned long),
2886 to_string(long long __val
)
2887 { return __gnu_cxx::__to_xstring
<string
>(&std::vsnprintf
,
2888 4 * sizeof(long long),
2892 to_string(unsigned long long __val
)
2893 { return __gnu_cxx::__to_xstring
<string
>(&std::vsnprintf
,
2894 4 * sizeof(unsigned long long),
2898 to_string(float __val
)
2901 __gnu_cxx::__numeric_traits
<float>::__max_exponent10
+ 20;
2902 return __gnu_cxx::__to_xstring
<string
>(&std::vsnprintf
, __n
,
2907 to_string(double __val
)
2910 __gnu_cxx::__numeric_traits
<double>::__max_exponent10
+ 20;
2911 return __gnu_cxx::__to_xstring
<string
>(&std::vsnprintf
, __n
,
2916 to_string(long double __val
)
2919 __gnu_cxx::__numeric_traits
<long double>::__max_exponent10
+ 20;
2920 return __gnu_cxx::__to_xstring
<string
>(&std::vsnprintf
, __n
,
2924 #ifdef _GLIBCXX_USE_WCHAR_T
2926 stoi(const wstring
& __str
, size_t* __idx
= 0, int __base
= 10)
2927 { return __gnu_cxx::__stoa
<long, int>(&std::wcstol
, "stoi", __str
.c_str(),
2931 stol(const wstring
& __str
, size_t* __idx
= 0, int __base
= 10)
2932 { return __gnu_cxx::__stoa(&std::wcstol
, "stol", __str
.c_str(),
2935 inline unsigned long
2936 stoul(const wstring
& __str
, size_t* __idx
= 0, int __base
= 10)
2937 { return __gnu_cxx::__stoa(&std::wcstoul
, "stoul", __str
.c_str(),
2941 stoll(const wstring
& __str
, size_t* __idx
= 0, int __base
= 10)
2942 { return __gnu_cxx::__stoa(&std::wcstoll
, "stoll", __str
.c_str(),
2945 inline unsigned long long
2946 stoull(const wstring
& __str
, size_t* __idx
= 0, int __base
= 10)
2947 { return __gnu_cxx::__stoa(&std::wcstoull
, "stoull", __str
.c_str(),
2950 // NB: wcstof vs wcstod.
2952 stof(const wstring
& __str
, size_t* __idx
= 0)
2953 { return __gnu_cxx::__stoa(&std::wcstof
, "stof", __str
.c_str(), __idx
); }
2956 stod(const wstring
& __str
, size_t* __idx
= 0)
2957 { return __gnu_cxx::__stoa(&std::wcstod
, "stod", __str
.c_str(), __idx
); }
2960 stold(const wstring
& __str
, size_t* __idx
= 0)
2961 { return __gnu_cxx::__stoa(&std::wcstold
, "stold", __str
.c_str(), __idx
); }
2965 to_wstring(int __val
)
2966 { return __gnu_cxx::__to_xstring
<wstring
>(&std::vswprintf
, 4 * sizeof(int),
2970 to_wstring(unsigned __val
)
2971 { return __gnu_cxx::__to_xstring
<wstring
>(&std::vswprintf
,
2972 4 * sizeof(unsigned),
2976 to_wstring(long __val
)
2977 { return __gnu_cxx::__to_xstring
<wstring
>(&std::vswprintf
, 4 * sizeof(long),
2981 to_wstring(unsigned long __val
)
2982 { return __gnu_cxx::__to_xstring
<wstring
>(&std::vswprintf
,
2983 4 * sizeof(unsigned long),
2987 to_wstring(long long __val
)
2988 { return __gnu_cxx::__to_xstring
<wstring
>(&std::vswprintf
,
2989 4 * sizeof(long long),
2993 to_wstring(unsigned long long __val
)
2994 { return __gnu_cxx::__to_xstring
<wstring
>(&std::vswprintf
,
2995 4 * sizeof(unsigned long long),
2999 to_wstring(float __val
)
3002 __gnu_cxx::__numeric_traits
<float>::__max_exponent10
+ 20;
3003 return __gnu_cxx::__to_xstring
<wstring
>(&std::vswprintf
, __n
,
3008 to_wstring(double __val
)
3011 __gnu_cxx::__numeric_traits
<double>::__max_exponent10
+ 20;
3012 return __gnu_cxx::__to_xstring
<wstring
>(&std::vswprintf
, __n
,
3017 to_wstring(long double __val
)
3020 __gnu_cxx::__numeric_traits
<long double>::__max_exponent10
+ 20;
3021 return __gnu_cxx::__to_xstring
<wstring
>(&std::vswprintf
, __n
,
3026 _GLIBCXX_END_NAMESPACE_VERSION
3029 #endif /* C++11 && _GLIBCXX_USE_C99 ... */
3031 #if __cplusplus >= 201103L
3033 #include <bits/functional_hash.h>
3035 namespace std
_GLIBCXX_VISIBILITY(default)
3037 _GLIBCXX_BEGIN_NAMESPACE_VERSION
3041 #ifndef _GLIBCXX_COMPATIBILITY_CXX0X
3042 /// std::hash specialization for string.
3045 : public __hash_base
<size_t, string
>
3048 operator()(const string
& __s
) const noexcept
3049 { return std::_Hash_impl::hash(__s
.data(), __s
.length()); }
3053 struct __is_fast_hash
<hash
<string
>> : std::false_type
3056 #ifdef _GLIBCXX_USE_WCHAR_T
3057 /// std::hash specialization for wstring.
3059 struct hash
<wstring
>
3060 : public __hash_base
<size_t, wstring
>
3063 operator()(const wstring
& __s
) const noexcept
3064 { return std::_Hash_impl::hash(__s
.data(),
3065 __s
.length() * sizeof(wchar_t)); }
3069 struct __is_fast_hash
<hash
<wstring
>> : std::false_type
3072 #endif /* _GLIBCXX_COMPATIBILITY_CXX0X */
3074 #ifdef _GLIBCXX_USE_C99_STDINT_TR1
3075 /// std::hash specialization for u16string.
3077 struct hash
<u16string
>
3078 : public __hash_base
<size_t, u16string
>
3081 operator()(const u16string
& __s
) const noexcept
3082 { return std::_Hash_impl::hash(__s
.data(),
3083 __s
.length() * sizeof(char16_t
)); }
3087 struct __is_fast_hash
<hash
<u16string
>> : std::false_type
3090 /// std::hash specialization for u32string.
3092 struct hash
<u32string
>
3093 : public __hash_base
<size_t, u32string
>
3096 operator()(const u32string
& __s
) const noexcept
3097 { return std::_Hash_impl::hash(__s
.data(),
3098 __s
.length() * sizeof(char32_t
)); }
3102 struct __is_fast_hash
<hash
<u32string
>> : std::false_type
3106 _GLIBCXX_END_NAMESPACE_VERSION
3109 #if __cplusplus > 201103L
3111 namespace std
_GLIBCXX_VISIBILITY(default)
3113 _GLIBCXX_BEGIN_NAMESPACE_VERSION
3115 inline namespace literals
{
3116 inline namespace string_literals
{
3118 inline basic_string
<char>
3119 operator"" s(const char* __str
, size_t __len
)
3120 { return basic_string
<char>{__str
, __len
}; }
3122 #ifdef _GLIBCXX_USE_WCHAR_T
3123 inline basic_string
<wchar_t>
3124 operator"" s(const wchar_t* __str
, size_t __len
)
3125 { return basic_string
<wchar_t>{__str
, __len
}; }
3128 #ifdef _GLIBCXX_USE_C99_STDINT_TR1
3129 inline basic_string
<char16_t
>
3130 operator"" s(const char16_t
* __str
, size_t __len
)
3131 { return basic_string
<char16_t
>{__str
, __len
}; }
3133 inline basic_string
<char32_t
>
3134 operator"" s(const char32_t
* __str
, size_t __len
)
3135 { return basic_string
<char32_t
>{__str
, __len
}; }
3138 } // inline namespace string_literals
3139 } // inline namespace literals
3141 _GLIBCXX_END_NAMESPACE_VERSION
3144 #endif // __cplusplus > 201103L
3148 #endif /* _BASIC_STRING_H */