2 //===------------------------ string_view ---------------------------------===//
4 // The LLVM Compiler Infrastructure
6 // This file is distributed under the University of Illinois Open Source
7 // License. See LICENSE.TXT for details.
9 //===----------------------------------------------------------------------===//
11 #ifndef _LIBCPP_LFTS_STRING_VIEW
12 #define _LIBCPP_LFTS_STRING_VIEW
18 namespace experimental {
19 inline namespace library_fundamentals_v1 {
21 // 7.2, Class template basic_string_view
22 template<class charT, class traits = char_traits<charT>>
23 class basic_string_view;
25 // 7.9, basic_string_view non-member comparison functions
26 template<class charT, class traits>
27 constexpr bool operator==(basic_string_view<charT, traits> x,
28 basic_string_view<charT, traits> y) noexcept;
29 template<class charT, class traits>
30 constexpr bool operator!=(basic_string_view<charT, traits> x,
31 basic_string_view<charT, traits> y) noexcept;
32 template<class charT, class traits>
33 constexpr bool operator< (basic_string_view<charT, traits> x,
34 basic_string_view<charT, traits> y) noexcept;
35 template<class charT, class traits>
36 constexpr bool operator> (basic_string_view<charT, traits> x,
37 basic_string_view<charT, traits> y) noexcept;
38 template<class charT, class traits>
39 constexpr bool operator<=(basic_string_view<charT, traits> x,
40 basic_string_view<charT, traits> y) noexcept;
41 template<class charT, class traits>
42 constexpr bool operator>=(basic_string_view<charT, traits> x,
43 basic_string_view<charT, traits> y) noexcept;
44 // see below, sufficient additional overloads of comparison functions
46 // 7.10, Inserters and extractors
47 template<class charT, class traits>
48 basic_ostream<charT, traits>&
49 operator<<(basic_ostream<charT, traits>& os,
50 basic_string_view<charT, traits> str);
52 // basic_string_view typedef names
53 typedef basic_string_view<char> string_view;
54 typedef basic_string_view<char16_t> u16string_view;
55 typedef basic_string_view<char32_t> u32string_view;
56 typedef basic_string_view<wchar_t> wstring_view;
58 template<class charT, class traits = char_traits<charT>>
59 class basic_string_view {
62 typedef traits traits_type;
63 typedef charT value_type;
64 typedef charT* pointer;
65 typedef const charT* const_pointer;
66 typedef charT& reference;
67 typedef const charT& const_reference;
68 typedef implementation-defined const_iterator;
69 typedef const_iterator iterator;
70 typedef reverse_iterator<const_iterator> const_reverse_iterator;
71 typedef const_reverse_iterator reverse_iterator;
72 typedef size_t size_type;
73 typedef ptrdiff_t difference_type;
74 static constexpr size_type npos = size_type(-1);
76 // 7.3, basic_string_view constructors and assignment operators
77 constexpr basic_string_view() noexcept;
78 constexpr basic_string_view(const basic_string_view&) noexcept = default;
79 basic_string_view& operator=(const basic_string_view&) noexcept = default;
80 template<class Allocator>
81 basic_string_view(const basic_string<charT, traits, Allocator>& str) noexcept;
82 constexpr basic_string_view(const charT* str);
83 constexpr basic_string_view(const charT* str, size_type len);
85 // 7.4, basic_string_view iterator support
86 constexpr const_iterator begin() const noexcept;
87 constexpr const_iterator end() const noexcept;
88 constexpr const_iterator cbegin() const noexcept;
89 constexpr const_iterator cend() const noexcept;
90 const_reverse_iterator rbegin() const noexcept;
91 const_reverse_iterator rend() const noexcept;
92 const_reverse_iterator crbegin() const noexcept;
93 const_reverse_iterator crend() const noexcept;
95 // 7.5, basic_string_view capacity
96 constexpr size_type size() const noexcept;
97 constexpr size_type length() const noexcept;
98 constexpr size_type max_size() const noexcept;
99 constexpr bool empty() const noexcept;
101 // 7.6, basic_string_view element access
102 constexpr const_reference operator[](size_type pos) const;
103 constexpr const_reference at(size_type pos) const;
104 constexpr const_reference front() const;
105 constexpr const_reference back() const;
106 constexpr const_pointer data() const noexcept;
108 // 7.7, basic_string_view modifiers
109 constexpr void clear() noexcept;
110 constexpr void remove_prefix(size_type n);
111 constexpr void remove_suffix(size_type n);
112 constexpr void swap(basic_string_view& s) noexcept;
114 // 7.8, basic_string_view string operations
115 template<class Allocator>
116 explicit operator basic_string<charT, traits, Allocator>() const;
117 template<class Allocator = allocator<charT>>
118 basic_string<charT, traits, Allocator> to_string(
119 const Allocator& a = Allocator()) const;
121 size_type copy(charT* s, size_type n, size_type pos = 0) const;
123 constexpr basic_string_view substr(size_type pos = 0, size_type n = npos) const;
124 constexpr int compare(basic_string_view s) const noexcept;
125 constexpr int compare(size_type pos1, size_type n1, basic_string_view s) const;
126 constexpr int compare(size_type pos1, size_type n1,
127 basic_string_view s, size_type pos2, size_type n2) const;
128 constexpr int compare(const charT* s) const;
129 constexpr int compare(size_type pos1, size_type n1, const charT* s) const;
130 constexpr int compare(size_type pos1, size_type n1,
131 const charT* s, size_type n2) const;
132 constexpr size_type find(basic_string_view s, size_type pos = 0) const noexcept;
133 constexpr size_type find(charT c, size_type pos = 0) const noexcept;
134 constexpr size_type find(const charT* s, size_type pos, size_type n) const;
135 constexpr size_type find(const charT* s, size_type pos = 0) const;
136 constexpr size_type rfind(basic_string_view s, size_type pos = npos) const noexcept;
137 constexpr size_type rfind(charT c, size_type pos = npos) const noexcept;
138 constexpr size_type rfind(const charT* s, size_type pos, size_type n) const;
139 constexpr size_type rfind(const charT* s, size_type pos = npos) const;
140 constexpr size_type find_first_of(basic_string_view s, size_type pos = 0) const noexcept;
141 constexpr size_type find_first_of(charT c, size_type pos = 0) const noexcept;
142 constexpr size_type find_first_of(const charT* s, size_type pos, size_type n) const;
143 constexpr size_type find_first_of(const charT* s, size_type pos = 0) const;
144 constexpr size_type find_last_of(basic_string_view s, size_type pos = npos) const noexcept;
145 constexpr size_type find_last_of(charT c, size_type pos = npos) const noexcept;
146 constexpr size_type find_last_of(const charT* s, size_type pos, size_type n) const;
147 constexpr size_type find_last_of(const charT* s, size_type pos = npos) const;
148 constexpr size_type find_first_not_of(basic_string_view s, size_type pos = 0) const noexcept;
149 constexpr size_type find_first_not_of(charT c, size_type pos = 0) const noexcept;
150 constexpr size_type find_first_not_of(const charT* s, size_type pos, size_type n) const;
151 constexpr size_type find_first_not_of(const charT* s, size_type pos = 0) const;
152 constexpr size_type find_last_not_of(basic_string_view s, size_type pos = npos) const noexcept;
153 constexpr size_type find_last_not_of(charT c, size_type pos = npos) const noexcept;
154 constexpr size_type find_last_not_of(const charT* s, size_type pos, size_type n) const;
155 constexpr size_type find_last_not_of(const charT* s, size_type pos = npos) const;
158 const_pointer data_; // exposition only
159 size_type size_; // exposition only
162 } // namespace fundamentals_v1
163 } // namespace experimental
165 // 7.11, Hash support
166 template <class T> struct hash;
167 template <> struct hash<experimental::string_view>;
168 template <> struct hash<experimental::u16string_view>;
169 template <> struct hash<experimental::u32string_view>;
170 template <> struct hash<experimental::wstring_view>;
177 #include <experimental/__config>
187 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
188 #pragma GCC system_header
191 _LIBCPP_BEGIN_NAMESPACE_LFTS
193 template<class _CharT, class _Traits = _VSTD::char_traits<_CharT> >
194 class _LIBCPP_TYPE_VIS_ONLY basic_string_view {
197 typedef _Traits traits_type;
198 typedef _CharT value_type;
199 typedef const _CharT* pointer;
200 typedef const _CharT* const_pointer;
201 typedef const _CharT& reference;
202 typedef const _CharT& const_reference;
203 typedef const_pointer const_iterator; // See [string.view.iterators]
204 typedef const_iterator iterator;
205 typedef _VSTD::reverse_iterator<const_iterator> const_reverse_iterator;
206 typedef const_reverse_iterator reverse_iterator;
207 typedef size_t size_type;
208 typedef ptrdiff_t difference_type;
209 static _LIBCPP_CONSTEXPR const size_type npos = -1; // size_type(-1);
211 // [string.view.cons], construct/copy
212 _LIBCPP_CONSTEXPR _LIBCPP_INLINE_VISIBILITY
213 basic_string_view() _NOEXCEPT : __data (nullptr), __size(0) {}
215 _LIBCPP_CONSTEXPR _LIBCPP_INLINE_VISIBILITY
216 basic_string_view(const basic_string_view&) _NOEXCEPT = default;
218 _LIBCPP_INLINE_VISIBILITY
219 basic_string_view& operator=(const basic_string_view&) _NOEXCEPT = default;
221 template<class _Allocator>
222 _LIBCPP_INLINE_VISIBILITY
223 basic_string_view(const basic_string<_CharT, _Traits, _Allocator>& __str) _NOEXCEPT
224 : __data (__str.data()), __size(__str.size()) {}
226 _LIBCPP_CONSTEXPR _LIBCPP_INLINE_VISIBILITY
227 basic_string_view(const _CharT* __s, size_type __len)
228 : __data(__s), __size(__len)
230 // _LIBCPP_ASSERT(__len == 0 || __s != nullptr, "string_view::string_view(_CharT *, size_t): recieved nullptr");
233 _LIBCPP_CONSTEXPR _LIBCPP_INLINE_VISIBILITY
234 basic_string_view(const _CharT* __s)
235 : __data(__s), __size(_Traits::length(__s)) {}
237 // [string.view.iterators], iterators
238 _LIBCPP_CONSTEXPR _LIBCPP_INLINE_VISIBILITY
239 const_iterator begin() const _NOEXCEPT { return cbegin(); }
241 _LIBCPP_CONSTEXPR _LIBCPP_INLINE_VISIBILITY
242 const_iterator end() const _NOEXCEPT { return cend(); }
244 _LIBCPP_CONSTEXPR _LIBCPP_INLINE_VISIBILITY
245 const_iterator cbegin() const _NOEXCEPT { return __data; }
247 _LIBCPP_CONSTEXPR _LIBCPP_INLINE_VISIBILITY
248 const_iterator cend() const _NOEXCEPT { return __data + __size; }
250 _LIBCPP_INLINE_VISIBILITY
251 const_reverse_iterator rbegin() const _NOEXCEPT { return const_reverse_iterator(cend()); }
253 _LIBCPP_INLINE_VISIBILITY
254 const_reverse_iterator rend() const _NOEXCEPT { return const_reverse_iterator(cbegin()); }
256 _LIBCPP_INLINE_VISIBILITY
257 const_reverse_iterator crbegin() const _NOEXCEPT { return const_reverse_iterator(cend()); }
259 _LIBCPP_INLINE_VISIBILITY
260 const_reverse_iterator crend() const _NOEXCEPT { return const_reverse_iterator(cbegin()); }
262 // [string.view.capacity], capacity
263 _LIBCPP_CONSTEXPR _LIBCPP_INLINE_VISIBILITY
264 size_type size() const _NOEXCEPT { return __size; }
266 _LIBCPP_CONSTEXPR _LIBCPP_INLINE_VISIBILITY
267 size_type length() const _NOEXCEPT { return __size; }
269 _LIBCPP_CONSTEXPR _LIBCPP_INLINE_VISIBILITY
270 size_type max_size() const _NOEXCEPT { return _VSTD::numeric_limits<size_type>::max(); }
272 _LIBCPP_CONSTEXPR bool _LIBCPP_INLINE_VISIBILITY
273 empty() const _NOEXCEPT { return __size == 0; }
275 // [string.view.access], element access
276 _LIBCPP_CONSTEXPR _LIBCPP_INLINE_VISIBILITY
277 const_reference operator[](size_type __pos) const { return __data[__pos]; }
279 _LIBCPP_CONSTEXPR _LIBCPP_INLINE_VISIBILITY
280 const_reference at(size_type __pos) const
282 return __pos >= size()
283 ? throw out_of_range("string_view::at")
285 // if (__pos >= size())
286 // throw out_of_range("string_view::at");
287 // return __data[__pos];
290 _LIBCPP_CONSTEXPR _LIBCPP_INLINE_VISIBILITY
291 const_reference front() const
293 return _LIBCPP_ASSERT(!empty(), "string_view::front(): string is empty"), __data[0];
296 _LIBCPP_CONSTEXPR _LIBCPP_INLINE_VISIBILITY
297 const_reference back() const
299 return _LIBCPP_ASSERT(!empty(), "string_view::back(): string is empty"), __data[__size-1];
302 _LIBCPP_CONSTEXPR _LIBCPP_INLINE_VISIBILITY
303 const_pointer data() const _NOEXCEPT { return __data; }
305 // [string.view.modifiers], modifiers:
306 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY
307 void clear() _NOEXCEPT
313 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY
314 void remove_prefix(size_type __n) _NOEXCEPT
316 _LIBCPP_ASSERT(n <= size(), "remove_prefix() can't remove more than size()");
321 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY
322 void remove_suffix(size_type __n) _NOEXCEPT
324 _LIBCPP_ASSERT(n <= size(), "remove_suffix() can't remove more than size()");
328 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY
329 void swap(basic_string_view& __other) _NOEXCEPT
331 const value_type *__p = __data;
332 __data = __other.__data;
333 __other.__data = __p;
335 size_type __sz = __size;
336 __size = __other.__size;
337 __other.__size = __sz;
338 // _VSTD::swap( __data, __other.__data );
339 // _VSTD::swap( __size, __other.__size );
342 // [string.view.ops], string operations:
343 template<class _Allocator>
344 _LIBCPP_INLINE_VISIBILITY
345 _LIBCPP_EXPLICIT operator basic_string<_CharT, _Traits, _Allocator>() const
346 { return basic_string<_CharT, _Traits, _Allocator>( begin(), end()); }
348 template<class _Allocator = allocator<_CharT> >
349 _LIBCPP_INLINE_VISIBILITY
350 basic_string<_CharT, _Traits, _Allocator>
351 to_string( const _Allocator& __a = _Allocator()) const
352 { return basic_string<_CharT, _Traits, _Allocator> ( begin(), end(), __a ); }
354 size_type copy(_CharT* __s, size_type __n, size_type __pos = 0) const
357 throw out_of_range("string_view::copy");
358 size_type __rlen = _VSTD::min( __n, size() - __pos );
359 _VSTD::copy_n(begin() + __pos, __rlen, __s );
364 basic_string_view substr(size_type __pos = 0, size_type __n = npos) const
366 // if (__pos > size())
367 // throw out_of_range("string_view::substr");
368 // size_type __rlen = _VSTD::min( __n, size() - __pos );
369 // return basic_string_view(data() + __pos, __rlen);
370 return __pos > size()
371 ? throw out_of_range("string_view::substr")
372 : basic_string_view(data() + __pos, _VSTD::min(__n, size() - __pos));
375 _LIBCPP_CONSTEXPR_AFTER_CXX11 int compare(basic_string_view __sv) const _NOEXCEPT
377 size_type __rlen = _VSTD::min( size(), __sv.size());
378 int __retval = _Traits::compare(data(), __sv.data(), __rlen);
379 if ( __retval == 0 ) // first __rlen chars matched
380 __retval = size() == __sv.size() ? 0 : ( size() < __sv.size() ? -1 : 1 );
384 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY
385 int compare(size_type __pos1, size_type __n1, basic_string_view __sv) const
387 return substr(__pos1, __n1).compare(__sv);
390 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY
391 int compare( size_type __pos1, size_type __n1,
392 basic_string_view _sv, size_type __pos2, size_type __n2) const
394 return substr(__pos1, __n1).compare(_sv.substr(__pos2, __n2));
397 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY
398 int compare(const _CharT* __s) const
400 return compare(basic_string_view(__s));
403 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY
404 int compare(size_type __pos1, size_type __n1, const _CharT* __s) const
406 return substr(__pos1, __n1).compare(basic_string_view(__s));
409 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY
410 int compare(size_type __pos1, size_type __n1, const _CharT* __s, size_type __n2) const
412 return substr(__pos1, __n1).compare(basic_string_view(__s, __n2));
416 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY
417 size_type find(basic_string_view __s, size_type __pos = 0) const _NOEXCEPT
419 _LIBCPP_ASSERT(__s.size() == 0 || __s.data() != nullptr, "string_view::find(): recieved nullptr");
420 return _VSTD::__str_find<value_type, size_type, traits_type, npos>
421 (data(), size(), __s.data(), __pos, __s.size());
424 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY
425 size_type find(_CharT __c, size_type __pos = 0) const _NOEXCEPT
427 return _VSTD::__str_find<value_type, size_type, traits_type, npos>
428 (data(), size(), __c, __pos);
431 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY
432 size_type find(const _CharT* __s, size_type __pos, size_type __n) const
434 _LIBCPP_ASSERT(__n == 0 || __s != nullptr, "string_view::find(): recieved nullptr");
435 return _VSTD::__str_find<value_type, size_type, traits_type, npos>
436 (data(), size(), __s, __pos, __n);
439 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY
440 size_type find(const _CharT* __s, size_type __pos = 0) const
442 _LIBCPP_ASSERT(__s != nullptr, "string_view::find(): recieved nullptr");
443 return _VSTD::__str_find<value_type, size_type, traits_type, npos>
444 (data(), size(), __s, __pos, traits_type::length(__s));
448 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY
449 size_type rfind(basic_string_view __s, size_type __pos = npos) const _NOEXCEPT
451 _LIBCPP_ASSERT(__s.size() == 0 || __s.data() != nullptr, "string_view::find(): recieved nullptr");
452 return _VSTD::__str_rfind<value_type, size_type, traits_type, npos>
453 (data(), size(), __s.data(), __pos, __s.size());
456 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY
457 size_type rfind(_CharT __c, size_type __pos = npos) const _NOEXCEPT
459 return _VSTD::__str_rfind<value_type, size_type, traits_type, npos>
460 (data(), size(), __c, __pos);
463 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY
464 size_type rfind(const _CharT* __s, size_type __pos, size_type __n) const
466 _LIBCPP_ASSERT(__n == 0 || __s != nullptr, "string_view::rfind(): recieved nullptr");
467 return _VSTD::__str_rfind<value_type, size_type, traits_type, npos>
468 (data(), size(), __s, __pos, __n);
471 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY
472 size_type rfind(const _CharT* __s, size_type __pos=npos) const
474 _LIBCPP_ASSERT(__s != nullptr, "string_view::rfind(): recieved nullptr");
475 return _VSTD::__str_rfind<value_type, size_type, traits_type, npos>
476 (data(), size(), __s, __pos, traits_type::length(__s));
480 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY
481 size_type find_first_of(basic_string_view __s, size_type __pos = 0) const _NOEXCEPT
483 _LIBCPP_ASSERT(__s.size() == 0 || __s.data() != nullptr, "string_view::find_first_of(): recieved nullptr");
484 return _VSTD::__str_find_first_of<value_type, size_type, traits_type, npos>
485 (data(), size(), __s.data(), __pos, __s.size());
488 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY
489 size_type find_first_of(_CharT __c, size_type __pos = 0) const _NOEXCEPT
490 { return find(__c, __pos); }
492 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY
493 size_type find_first_of(const _CharT* __s, size_type __pos, size_type __n) const
495 _LIBCPP_ASSERT(__n == 0 || __s != nullptr, "string_view::find_first_of(): recieved nullptr");
496 return _VSTD::__str_find_first_of<value_type, size_type, traits_type, npos>
497 (data(), size(), __s, __pos, __n);
500 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY
501 size_type find_first_of(const _CharT* __s, size_type __pos=0) const
503 _LIBCPP_ASSERT(__s != nullptr, "string_view::find_first_of(): recieved nullptr");
504 return _VSTD::__str_find_first_of<value_type, size_type, traits_type, npos>
505 (data(), size(), __s, __pos, traits_type::length(__s));
509 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY
510 size_type find_last_of(basic_string_view __s, size_type __pos=npos) const _NOEXCEPT
512 _LIBCPP_ASSERT(__s.size() == 0 || __s.data() != nullptr, "string_view::find_last_of(): recieved nullptr");
513 return _VSTD::__str_find_last_of<value_type, size_type, traits_type, npos>
514 (data(), size(), __s.data(), __pos, __s.size());
517 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY
518 size_type find_last_of(_CharT __c, size_type __pos = npos) const _NOEXCEPT
519 { return rfind(__c, __pos); }
521 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY
522 size_type find_last_of(const _CharT* __s, size_type __pos, size_type __n) const
524 _LIBCPP_ASSERT(__n == 0 || __s != nullptr, "string_view::find_last_of(): recieved nullptr");
525 return _VSTD::__str_find_last_of<value_type, size_type, traits_type, npos>
526 (data(), size(), __s, __pos, __n);
529 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY
530 size_type find_last_of(const _CharT* __s, size_type __pos=npos) const
532 _LIBCPP_ASSERT(__s != nullptr, "string_view::find_last_of(): recieved nullptr");
533 return _VSTD::__str_find_last_of<value_type, size_type, traits_type, npos>
534 (data(), size(), __s, __pos, traits_type::length(__s));
538 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY
539 size_type find_first_not_of(basic_string_view __s, size_type __pos=0) const _NOEXCEPT
541 _LIBCPP_ASSERT(__s.size() == 0 || __s.data() != nullptr, "string_view::find_first_not_of(): recieved nullptr");
542 return _VSTD::__str_find_first_not_of<value_type, size_type, traits_type, npos>
543 (data(), size(), __s.data(), __pos, __s.size());
546 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY
547 size_type find_first_not_of(_CharT __c, size_type __pos=0) const _NOEXCEPT
549 return _VSTD::__str_find_first_not_of<value_type, size_type, traits_type, npos>
550 (data(), size(), __c, __pos);
553 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY
554 size_type find_first_not_of(const _CharT* __s, size_type __pos, size_type __n) const
556 _LIBCPP_ASSERT(__n == 0 || __s != nullptr, "string_view::find_first_not_of(): recieved nullptr");
557 return _VSTD::__str_find_first_not_of<value_type, size_type, traits_type, npos>
558 (data(), size(), __s, __pos, __n);
561 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY
562 size_type find_first_not_of(const _CharT* __s, size_type __pos=0) const
564 _LIBCPP_ASSERT(__s != nullptr, "string_view::find_first_not_of(): recieved nullptr");
565 return _VSTD::__str_find_first_not_of<value_type, size_type, traits_type, npos>
566 (data(), size(), __s, __pos, traits_type::length(__s));
570 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY
571 size_type find_last_not_of(basic_string_view __s, size_type __pos=npos) const _NOEXCEPT
573 _LIBCPP_ASSERT(__s.size() == 0 || __s.data() != nullptr, "string_view::find_last_not_of(): recieved nullptr");
574 return _VSTD::__str_find_last_not_of<value_type, size_type, traits_type, npos>
575 (data(), size(), __s.data(), __pos, __s.size());
578 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY
579 size_type find_last_not_of(_CharT __c, size_type __pos=npos) const _NOEXCEPT
581 return _VSTD::__str_find_last_not_of<value_type, size_type, traits_type, npos>
582 (data(), size(), __c, __pos);
585 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY
586 size_type find_last_not_of(const _CharT* __s, size_type __pos, size_type __n) const
588 _LIBCPP_ASSERT(__n == 0 || __s != nullptr, "string_view::find_last_not_of(): recieved nullptr");
589 return _VSTD::__str_find_last_not_of<value_type, size_type, traits_type, npos>
590 (data(), size(), __s, __pos, __n);
593 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY
594 size_type find_last_not_of(const _CharT* __s, size_type __pos=npos) const
596 _LIBCPP_ASSERT(__s != nullptr, "string_view::find_last_not_of(): recieved nullptr");
597 return _VSTD::__str_find_last_not_of<value_type, size_type, traits_type, npos>
598 (data(), size(), __s, __pos, traits_type::length(__s));
602 const value_type* __data;
607 // [string.view.comparison]
609 template<class _CharT, class _Traits>
610 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY
611 bool operator==(basic_string_view<_CharT, _Traits> __lhs,
612 basic_string_view<_CharT, _Traits> __rhs) _NOEXCEPT
614 if ( __lhs.size() != __rhs.size()) return false;
615 return __lhs.compare(__rhs) == 0;
618 template<class _CharT, class _Traits>
619 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY
620 bool operator==(basic_string_view<_CharT, _Traits> __lhs,
621 typename _VSTD::common_type<basic_string_view<_CharT, _Traits> >::type __rhs) _NOEXCEPT
623 if ( __lhs.size() != __rhs.size()) return false;
624 return __lhs.compare(__rhs) == 0;
627 template<class _CharT, class _Traits>
628 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY
629 bool operator==(typename _VSTD::common_type<basic_string_view<_CharT, _Traits> >::type __lhs,
630 basic_string_view<_CharT, _Traits> __rhs) _NOEXCEPT
632 if ( __lhs.size() != __rhs.size()) return false;
633 return __lhs.compare(__rhs) == 0;
638 template<class _CharT, class _Traits>
639 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY
640 bool operator!=(basic_string_view<_CharT, _Traits> __lhs, basic_string_view<_CharT, _Traits> __rhs) _NOEXCEPT
642 if ( __lhs.size() != __rhs.size())
644 return __lhs.compare(__rhs) != 0;
647 template<class _CharT, class _Traits>
648 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY
649 bool operator!=(basic_string_view<_CharT, _Traits> __lhs,
650 typename _VSTD::common_type<basic_string_view<_CharT, _Traits> >::type __rhs) _NOEXCEPT
652 if ( __lhs.size() != __rhs.size())
654 return __lhs.compare(__rhs) != 0;
657 template<class _CharT, class _Traits>
658 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY
659 bool operator!=(typename _VSTD::common_type<basic_string_view<_CharT, _Traits> >::type __lhs,
660 basic_string_view<_CharT, _Traits> __rhs) _NOEXCEPT
662 if ( __lhs.size() != __rhs.size())
664 return __lhs.compare(__rhs) != 0;
669 template<class _CharT, class _Traits>
670 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY
671 bool operator<(basic_string_view<_CharT, _Traits> __lhs, basic_string_view<_CharT, _Traits> __rhs) _NOEXCEPT
673 return __lhs.compare(__rhs) < 0;
676 template<class _CharT, class _Traits>
677 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY
678 bool operator<(basic_string_view<_CharT, _Traits> __lhs,
679 typename _VSTD::common_type<basic_string_view<_CharT, _Traits> >::type __rhs) _NOEXCEPT
681 return __lhs.compare(__rhs) < 0;
684 template<class _CharT, class _Traits>
685 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY
686 bool operator<(typename _VSTD::common_type<basic_string_view<_CharT, _Traits> >::type __lhs,
687 basic_string_view<_CharT, _Traits> __rhs) _NOEXCEPT
689 return __lhs.compare(__rhs) < 0;
694 template<class _CharT, class _Traits>
695 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY
696 bool operator> (basic_string_view<_CharT, _Traits> __lhs, basic_string_view<_CharT, _Traits> __rhs) _NOEXCEPT
698 return __lhs.compare(__rhs) > 0;
701 template<class _CharT, class _Traits>
702 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY
703 bool operator>(basic_string_view<_CharT, _Traits> __lhs,
704 typename _VSTD::common_type<basic_string_view<_CharT, _Traits> >::type __rhs) _NOEXCEPT
706 return __lhs.compare(__rhs) > 0;
709 template<class _CharT, class _Traits>
710 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY
711 bool operator>(typename _VSTD::common_type<basic_string_view<_CharT, _Traits> >::type __lhs,
712 basic_string_view<_CharT, _Traits> __rhs) _NOEXCEPT
714 return __lhs.compare(__rhs) > 0;
719 template<class _CharT, class _Traits>
720 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY
721 bool operator<=(basic_string_view<_CharT, _Traits> __lhs, basic_string_view<_CharT, _Traits> __rhs) _NOEXCEPT
723 return __lhs.compare(__rhs) <= 0;
726 template<class _CharT, class _Traits>
727 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY
728 bool operator<=(basic_string_view<_CharT, _Traits> __lhs,
729 typename _VSTD::common_type<basic_string_view<_CharT, _Traits> >::type __rhs) _NOEXCEPT
731 return __lhs.compare(__rhs) <= 0;
734 template<class _CharT, class _Traits>
735 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY
736 bool operator<=(typename _VSTD::common_type<basic_string_view<_CharT, _Traits> >::type __lhs,
737 basic_string_view<_CharT, _Traits> __rhs) _NOEXCEPT
739 return __lhs.compare(__rhs) <= 0;
744 template<class _CharT, class _Traits>
745 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY
746 bool operator>=(basic_string_view<_CharT, _Traits> __lhs, basic_string_view<_CharT, _Traits> __rhs) _NOEXCEPT
748 return __lhs.compare(__rhs) >= 0;
752 template<class _CharT, class _Traits>
753 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY
754 bool operator>=(basic_string_view<_CharT, _Traits> __lhs,
755 typename _VSTD::common_type<basic_string_view<_CharT, _Traits> >::type __rhs) _NOEXCEPT
757 return __lhs.compare(__rhs) >= 0;
760 template<class _CharT, class _Traits>
761 _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY
762 bool operator>=(typename _VSTD::common_type<basic_string_view<_CharT, _Traits> >::type __lhs,
763 basic_string_view<_CharT, _Traits> __rhs) _NOEXCEPT
765 return __lhs.compare(__rhs) >= 0;
770 template<class _CharT, class _Traits>
771 basic_ostream<_CharT, _Traits>&
772 operator<<(basic_ostream<_CharT, _Traits>& __os, basic_string_view<_CharT, _Traits> __sv)
774 return _VSTD::__put_character_sequence(__os, __sv.data(), __sv.size());
777 typedef basic_string_view<char> string_view;
778 typedef basic_string_view<char16_t> u16string_view;
779 typedef basic_string_view<char32_t> u32string_view;
780 typedef basic_string_view<wchar_t> wstring_view;
782 _LIBCPP_END_NAMESPACE_LFTS
783 _LIBCPP_BEGIN_NAMESPACE_STD
785 // [string.view.hash]
786 // Shamelessly stolen from <string>
787 template<class _CharT, class _Traits>
788 struct _LIBCPP_TYPE_VIS_ONLY hash<std::experimental::basic_string_view<_CharT, _Traits> >
789 : public unary_function<std::experimental::basic_string_view<_CharT, _Traits>, size_t>
791 size_t operator()(const std::experimental::basic_string_view<_CharT, _Traits>& __val) const _NOEXCEPT;
794 template<class _CharT, class _Traits>
796 hash<std::experimental::basic_string_view<_CharT, _Traits> >::operator()(
797 const std::experimental::basic_string_view<_CharT, _Traits>& __val) const _NOEXCEPT
799 return __do_string_hash(__val.data(), __val.data() + __val.size());
802 #if _LIBCPP_STD_VER > 11
803 template <class _CharT, class _Traits>
804 __quoted_output_proxy<_CharT, const _CharT *, _Traits>
805 quoted ( std::experimental::basic_string_view <_CharT, _Traits> __sv,
806 _CharT __delim = _CharT('"'), _CharT __escape=_CharT('\\'))
808 return __quoted_output_proxy<_CharT, const _CharT *, _Traits>
809 ( __sv.data(), __sv.data() + __sv.size(), __delim, __escape );
813 _LIBCPP_END_NAMESPACE_STD
815 #endif // _LIBCPP_LFTS_STRING_VIEW