1// -*- C++ -*- 2//===----------------------------------------------------------------------===// 3// 4// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 5// See https://llvm.org/LICENSE.txt for license information. 6// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 7// 8//===----------------------------------------------------------------------===// 9 10#ifndef _LIBCPP___CXX03_BITSET 11#define _LIBCPP___CXX03_BITSET 12 13// clang-format off 14 15/* 16 bitset synopsis 17 18namespace std 19{ 20 21namespace std { 22 23template <size_t N> 24class bitset 25{ 26public: 27 // bit reference: 28 class reference 29 { 30 friend class bitset; 31 reference() noexcept; 32 public: 33 ~reference() noexcept; 34 reference& operator=(bool x) noexcept; // for b[i] = x; 35 reference& operator=(const reference&) noexcept; // for b[i] = b[j]; 36 bool operator~() const noexcept; // flips the bit 37 operator bool() const noexcept; // for x = b[i]; 38 reference& flip() noexcept; // for b[i].flip(); 39 }; 40 41 // 23.3.5.1 constructors: 42 constexpr bitset() noexcept; 43 constexpr bitset(unsigned long long val) noexcept; 44 template <class charT> 45 constexpr explicit bitset(const charT* str, 46 typename basic_string<charT>::size_type n = basic_string<charT>::npos, 47 charT zero = charT('0'), charT one = charT('1')); // until C++26, constexpr since C++23 48 template <class charT> 49 constexpr explicit bitset(const charT* str, 50 typename basic_string_view<charT>::size_type n = basic_string_view<charT>::npos, 51 charT zero = charT('0'), charT one = charT('1')); // since C++26 52 template<class charT, class traits> 53 explicit bitset( 54 const basic_string_view<charT,traits>& str, 55 typename basic_string_view<charT,traits>::size_type pos = 0, 56 typename basic_string_view<charT,traits>::size_type n = basic_string_view<charT,traits>::npos, 57 charT zero = charT('0'), charT one = charT('1')); // since C++26 58 template<class charT, class traits, class Allocator> 59 constexpr explicit bitset( 60 const basic_string<charT,traits,Allocator>& str, 61 typename basic_string<charT,traits,Allocator>::size_type pos = 0, 62 typename basic_string<charT,traits,Allocator>::size_type n = basic_string<charT,traits,Allocator>::npos, 63 charT zero = charT('0'), charT one = charT('1')); // constexpr since C++23 64 65 // 23.3.5.2 bitset operations: 66 bitset& operator&=(const bitset& rhs) noexcept; // constexpr since C++23 67 bitset& operator|=(const bitset& rhs) noexcept; // constexpr since C++23 68 bitset& operator^=(const bitset& rhs) noexcept; // constexpr since C++23 69 bitset& operator<<=(size_t pos) noexcept; // constexpr since C++23 70 bitset& operator>>=(size_t pos) noexcept; // constexpr since C++23 71 bitset& set() noexcept; // constexpr since C++23 72 bitset& set(size_t pos, bool val = true); // constexpr since C++23 73 bitset& reset() noexcept; // constexpr since C++23 74 bitset& reset(size_t pos); // constexpr since C++23 75 bitset operator~() const noexcept; // constexpr since C++23 76 bitset& flip() noexcept; // constexpr since C++23 77 bitset& flip(size_t pos); // constexpr since C++23 78 79 // element access: 80 constexpr bool operator[](size_t pos) const; 81 reference operator[](size_t pos); // constexpr since C++23 82 unsigned long to_ulong() const; // constexpr since C++23 83 unsigned long long to_ullong() const; // constexpr since C++23 84 template <class charT, class traits, class Allocator> // constexpr since C++23 85 basic_string<charT, traits, Allocator> to_string(charT zero = charT('0'), charT one = charT('1')) const; 86 template <class charT, class traits> // constexpr since C++23 87 basic_string<charT, traits, allocator<charT> > to_string(charT zero = charT('0'), charT one = charT('1')) const; 88 template <class charT> // constexpr since C++23 89 basic_string<charT, char_traits<charT>, allocator<charT> > to_string(charT zero = charT('0'), charT one = charT('1')) const; 90 basic_string<char, char_traits<char>, allocator<char> > to_string(char zero = '0', char one = '1') const; // constexpr since C++23 91 size_t count() const noexcept; // constexpr since C++23 92 constexpr size_t size() const noexcept; // constexpr since C++23 93 bool operator==(const bitset& rhs) const noexcept; // constexpr since C++23 94 bool operator!=(const bitset& rhs) const noexcept; // removed in C++20 95 bool test(size_t pos) const; // constexpr since C++23 96 bool all() const noexcept; // constexpr since C++23 97 bool any() const noexcept; // constexpr since C++23 98 bool none() const noexcept; // constexpr since C++23 99 bitset<N> operator<<(size_t pos) const noexcept; // constexpr since C++23 100 bitset<N> operator>>(size_t pos) const noexcept; // constexpr since C++23 101}; 102 103// 23.3.5.3 bitset operators: 104template <size_t N> 105bitset<N> operator&(const bitset<N>&, const bitset<N>&) noexcept; // constexpr since C++23 106 107template <size_t N> 108bitset<N> operator|(const bitset<N>&, const bitset<N>&) noexcept; // constexpr since C++23 109 110template <size_t N> 111bitset<N> operator^(const bitset<N>&, const bitset<N>&) noexcept; // constexpr since C++23 112 113template <class charT, class traits, size_t N> 114basic_istream<charT, traits>& 115operator>>(basic_istream<charT, traits>& is, bitset<N>& x); 116 117template <class charT, class traits, size_t N> 118basic_ostream<charT, traits>& 119operator<<(basic_ostream<charT, traits>& os, const bitset<N>& x); 120 121template <size_t N> struct hash<std::bitset<N>>; 122 123} // std 124 125*/ 126 127// clang-format on 128 129#include <__cxx03/__algorithm/count.h> 130#include <__cxx03/__algorithm/fill.h> 131#include <__cxx03/__algorithm/find.h> 132#include <__cxx03/__bit_reference> 133#include <__cxx03/__config> 134#include <__cxx03/__functional/hash.h> 135#include <__cxx03/__functional/unary_function.h> 136#include <__cxx03/__type_traits/is_char_like_type.h> 137#include <__cxx03/climits> 138#include <__cxx03/cstddef> 139#include <__cxx03/stdexcept> 140#include <__cxx03/string_view> 141#include <__cxx03/version> 142 143// standard-mandated includes 144 145// [bitset.syn] 146#include <__cxx03/iosfwd> 147#include <__cxx03/string> 148 149#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) 150# pragma GCC system_header 151#endif 152 153_LIBCPP_PUSH_MACROS 154#include <__cxx03/__undef_macros> 155 156_LIBCPP_BEGIN_NAMESPACE_STD 157 158template <size_t _N_words, size_t _Size> 159class __bitset; 160 161template <size_t _N_words, size_t _Size> 162struct __has_storage_type<__bitset<_N_words, _Size> > { 163 static const bool value = true; 164}; 165 166template <size_t _N_words, size_t _Size> 167class __bitset { 168public: 169 typedef ptrdiff_t difference_type; 170 typedef size_t size_type; 171 typedef size_type __storage_type; 172 173protected: 174 typedef __bitset __self; 175 typedef __storage_type* __storage_pointer; 176 typedef const __storage_type* __const_storage_pointer; 177 static const unsigned __bits_per_word = static_cast<unsigned>(sizeof(__storage_type) * CHAR_BIT); 178 179 friend class __bit_reference<__bitset>; 180 friend class __bit_const_reference<__bitset>; 181 friend class __bit_iterator<__bitset, false>; 182 friend class __bit_iterator<__bitset, true>; 183 friend struct __bit_array<__bitset>; 184 185 __storage_type __first_[_N_words]; 186 187 typedef __bit_reference<__bitset> reference; 188 typedef __bit_const_reference<__bitset> const_reference; 189 typedef __bit_iterator<__bitset, false> iterator; 190 typedef __bit_iterator<__bitset, true> const_iterator; 191 192 _LIBCPP_HIDE_FROM_ABI __bitset() _NOEXCEPT; 193 _LIBCPP_HIDE_FROM_ABI explicit __bitset(unsigned long long __v) _NOEXCEPT; 194 195 _LIBCPP_HIDE_FROM_ABI reference __make_ref(size_t __pos) _NOEXCEPT { 196 return reference(__first_ + __pos / __bits_per_word, __storage_type(1) << __pos % __bits_per_word); 197 } 198 _LIBCPP_HIDE_FROM_ABI const_reference __make_ref(size_t __pos) const _NOEXCEPT { 199 return const_reference(__first_ + __pos / __bits_per_word, __storage_type(1) << __pos % __bits_per_word); 200 } 201 _LIBCPP_HIDE_FROM_ABI iterator __make_iter(size_t __pos) _NOEXCEPT { 202 return iterator(__first_ + __pos / __bits_per_word, __pos % __bits_per_word); 203 } 204 _LIBCPP_HIDE_FROM_ABI const_iterator __make_iter(size_t __pos) const _NOEXCEPT { 205 return const_iterator(__first_ + __pos / __bits_per_word, __pos % __bits_per_word); 206 } 207 208 _LIBCPP_HIDE_FROM_ABI void operator&=(const __bitset& __v) _NOEXCEPT; 209 _LIBCPP_HIDE_FROM_ABI void operator|=(const __bitset& __v) _NOEXCEPT; 210 _LIBCPP_HIDE_FROM_ABI void operator^=(const __bitset& __v) _NOEXCEPT; 211 212 _LIBCPP_HIDE_FROM_ABI void flip() _NOEXCEPT; 213 _LIBCPP_HIDE_FROM_ABI unsigned long to_ulong() const { 214 return to_ulong(integral_constant < bool, _Size< sizeof(unsigned long) * CHAR_BIT>()); 215 } 216 _LIBCPP_HIDE_FROM_ABI unsigned long long to_ullong() const { 217 return to_ullong(integral_constant < bool, _Size< sizeof(unsigned long long) * CHAR_BIT>()); 218 } 219 220 _LIBCPP_HIDE_FROM_ABI bool all() const _NOEXCEPT; 221 _LIBCPP_HIDE_FROM_ABI bool any() const _NOEXCEPT; 222 _LIBCPP_HIDE_FROM_ABI size_t __hash_code() const _NOEXCEPT; 223 224private: 225 void __init(unsigned long long __v, false_type) _NOEXCEPT; 226 _LIBCPP_HIDE_FROM_ABI void __init(unsigned long long __v, true_type) _NOEXCEPT; 227 _LIBCPP_HIDE_FROM_ABI unsigned long to_ulong(false_type) const; 228 _LIBCPP_HIDE_FROM_ABI unsigned long to_ulong(true_type) const; 229 _LIBCPP_HIDE_FROM_ABI unsigned long long to_ullong(false_type) const; 230 _LIBCPP_HIDE_FROM_ABI unsigned long long to_ullong(true_type) const; 231 _LIBCPP_HIDE_FROM_ABI unsigned long long to_ullong(true_type, false_type) const; 232 _LIBCPP_HIDE_FROM_ABI unsigned long long to_ullong(true_type, true_type) const; 233}; 234 235template <size_t _N_words, size_t _Size> 236inline __bitset<_N_words, _Size>::__bitset() _NOEXCEPT { 237 std::fill_n(__first_, _N_words, __storage_type(0)); 238} 239 240template <size_t _N_words, size_t _Size> 241void __bitset<_N_words, _Size>::__init(unsigned long long __v, false_type) _NOEXCEPT { 242 __storage_type __t[sizeof(unsigned long long) / sizeof(__storage_type)]; 243 size_t __sz = _Size; 244 for (size_t __i = 0; __i < sizeof(__t) / sizeof(__t[0]); ++__i, __v >>= __bits_per_word, __sz -= __bits_per_word) 245 if (__sz < __bits_per_word) 246 __t[__i] = static_cast<__storage_type>(__v) & (1ULL << __sz) - 1; 247 else 248 __t[__i] = static_cast<__storage_type>(__v); 249 250 std::copy(__t, __t + sizeof(__t) / sizeof(__t[0]), __first_); 251 std::fill( 252 __first_ + sizeof(__t) / sizeof(__t[0]), __first_ + sizeof(__first_) / sizeof(__first_[0]), __storage_type(0)); 253} 254 255template <size_t _N_words, size_t _Size> 256inline _LIBCPP_HIDE_FROM_ABI void __bitset<_N_words, _Size>::__init(unsigned long long __v, true_type) _NOEXCEPT { 257 __first_[0] = __v; 258 if (_Size < __bits_per_word) 259 __first_[0] &= (1ULL << _Size) - 1; 260 261 std::fill(__first_ + 1, __first_ + sizeof(__first_) / sizeof(__first_[0]), __storage_type(0)); 262} 263 264template <size_t _N_words, size_t _Size> 265inline __bitset<_N_words, _Size>::__bitset(unsigned long long __v) _NOEXCEPT { 266 __init(__v, integral_constant<bool, sizeof(unsigned long long) == sizeof(__storage_type)>()); 267} 268 269template <size_t _N_words, size_t _Size> 270inline _LIBCPP_HIDE_FROM_ABI void __bitset<_N_words, _Size>::operator&=(const __bitset& __v) _NOEXCEPT { 271 for (size_type __i = 0; __i < _N_words; ++__i) 272 __first_[__i] &= __v.__first_[__i]; 273} 274 275template <size_t _N_words, size_t _Size> 276inline _LIBCPP_HIDE_FROM_ABI void __bitset<_N_words, _Size>::operator|=(const __bitset& __v) _NOEXCEPT { 277 for (size_type __i = 0; __i < _N_words; ++__i) 278 __first_[__i] |= __v.__first_[__i]; 279} 280 281template <size_t _N_words, size_t _Size> 282inline _LIBCPP_HIDE_FROM_ABI void __bitset<_N_words, _Size>::operator^=(const __bitset& __v) _NOEXCEPT { 283 for (size_type __i = 0; __i < _N_words; ++__i) 284 __first_[__i] ^= __v.__first_[__i]; 285} 286 287template <size_t _N_words, size_t _Size> 288_LIBCPP_HIDE_FROM_ABI void __bitset<_N_words, _Size>::flip() _NOEXCEPT { 289 // do middle whole words 290 size_type __n = _Size; 291 __storage_pointer __p = __first_; 292 for (; __n >= __bits_per_word; ++__p, __n -= __bits_per_word) 293 *__p = ~*__p; 294 // do last partial word 295 if (__n > 0) { 296 __storage_type __m = ~__storage_type(0) >> (__bits_per_word - __n); 297 __storage_type __b = *__p & __m; 298 *__p &= ~__m; 299 *__p |= ~__b & __m; 300 } 301} 302 303template <size_t _N_words, size_t _Size> 304_LIBCPP_HIDE_FROM_ABI unsigned long __bitset<_N_words, _Size>::to_ulong(false_type) const { 305 const_iterator __e = __make_iter(_Size); 306 const_iterator __i = std::find(__make_iter(sizeof(unsigned long) * CHAR_BIT), __e, true); 307 if (__i != __e) 308 __throw_overflow_error("bitset to_ulong overflow error"); 309 310 return __first_[0]; 311} 312 313template <size_t _N_words, size_t _Size> 314inline _LIBCPP_HIDE_FROM_ABI unsigned long __bitset<_N_words, _Size>::to_ulong(true_type) const { 315 return __first_[0]; 316} 317 318template <size_t _N_words, size_t _Size> 319_LIBCPP_HIDE_FROM_ABI unsigned long long __bitset<_N_words, _Size>::to_ullong(false_type) const { 320 const_iterator __e = __make_iter(_Size); 321 const_iterator __i = std::find(__make_iter(sizeof(unsigned long long) * CHAR_BIT), __e, true); 322 if (__i != __e) 323 __throw_overflow_error("bitset to_ullong overflow error"); 324 325 return to_ullong(true_type()); 326} 327 328template <size_t _N_words, size_t _Size> 329inline _LIBCPP_HIDE_FROM_ABI unsigned long long __bitset<_N_words, _Size>::to_ullong(true_type) const { 330 return to_ullong(true_type(), integral_constant<bool, sizeof(__storage_type) < sizeof(unsigned long long)>()); 331} 332 333template <size_t _N_words, size_t _Size> 334inline _LIBCPP_HIDE_FROM_ABI unsigned long long __bitset<_N_words, _Size>::to_ullong(true_type, false_type) const { 335 return __first_[0]; 336} 337 338template <size_t _N_words, size_t _Size> 339_LIBCPP_HIDE_FROM_ABI unsigned long long __bitset<_N_words, _Size>::to_ullong(true_type, true_type) const { 340 unsigned long long __r = __first_[0]; 341 _LIBCPP_DIAGNOSTIC_PUSH 342 _LIBCPP_GCC_DIAGNOSTIC_IGNORED("-Wshift-count-overflow") 343 for (size_t __i = 1; __i < sizeof(unsigned long long) / sizeof(__storage_type); ++__i) 344 __r |= static_cast<unsigned long long>(__first_[__i]) << (sizeof(__storage_type) * CHAR_BIT); 345 _LIBCPP_DIAGNOSTIC_POP 346 return __r; 347} 348 349template <size_t _N_words, size_t _Size> 350_LIBCPP_HIDE_FROM_ABI bool __bitset<_N_words, _Size>::all() const _NOEXCEPT { 351 // do middle whole words 352 size_type __n = _Size; 353 __const_storage_pointer __p = __first_; 354 for (; __n >= __bits_per_word; ++__p, __n -= __bits_per_word) 355 if (~*__p) 356 return false; 357 // do last partial word 358 if (__n > 0) { 359 __storage_type __m = ~__storage_type(0) >> (__bits_per_word - __n); 360 if (~*__p & __m) 361 return false; 362 } 363 return true; 364} 365 366template <size_t _N_words, size_t _Size> 367_LIBCPP_HIDE_FROM_ABI bool __bitset<_N_words, _Size>::any() const _NOEXCEPT { 368 // do middle whole words 369 size_type __n = _Size; 370 __const_storage_pointer __p = __first_; 371 for (; __n >= __bits_per_word; ++__p, __n -= __bits_per_word) 372 if (*__p) 373 return true; 374 // do last partial word 375 if (__n > 0) { 376 __storage_type __m = ~__storage_type(0) >> (__bits_per_word - __n); 377 if (*__p & __m) 378 return true; 379 } 380 return false; 381} 382 383template <size_t _N_words, size_t _Size> 384inline size_t __bitset<_N_words, _Size>::__hash_code() const _NOEXCEPT { 385 size_t __h = 0; 386 for (size_type __i = 0; __i < _N_words; ++__i) 387 __h ^= __first_[__i]; 388 return __h; 389} 390 391template <size_t _Size> 392class __bitset<1, _Size> { 393public: 394 typedef ptrdiff_t difference_type; 395 typedef size_t size_type; 396 typedef size_type __storage_type; 397 398protected: 399 typedef __bitset __self; 400 typedef __storage_type* __storage_pointer; 401 typedef const __storage_type* __const_storage_pointer; 402 static const unsigned __bits_per_word = static_cast<unsigned>(sizeof(__storage_type) * CHAR_BIT); 403 404 friend class __bit_reference<__bitset>; 405 friend class __bit_const_reference<__bitset>; 406 friend class __bit_iterator<__bitset, false>; 407 friend class __bit_iterator<__bitset, true>; 408 friend struct __bit_array<__bitset>; 409 410 __storage_type __first_; 411 412 typedef __bit_reference<__bitset> reference; 413 typedef __bit_const_reference<__bitset> const_reference; 414 typedef __bit_iterator<__bitset, false> iterator; 415 typedef __bit_iterator<__bitset, true> const_iterator; 416 417 _LIBCPP_HIDE_FROM_ABI __bitset() _NOEXCEPT; 418 _LIBCPP_HIDE_FROM_ABI explicit __bitset(unsigned long long __v) _NOEXCEPT; 419 420 _LIBCPP_HIDE_FROM_ABI reference __make_ref(size_t __pos) _NOEXCEPT { 421 return reference(&__first_, __storage_type(1) << __pos); 422 } 423 _LIBCPP_HIDE_FROM_ABI const_reference __make_ref(size_t __pos) const _NOEXCEPT { 424 return const_reference(&__first_, __storage_type(1) << __pos); 425 } 426 _LIBCPP_HIDE_FROM_ABI iterator __make_iter(size_t __pos) _NOEXCEPT { 427 return iterator(&__first_ + __pos / __bits_per_word, __pos % __bits_per_word); 428 } 429 _LIBCPP_HIDE_FROM_ABI const_iterator __make_iter(size_t __pos) const _NOEXCEPT { 430 return const_iterator(&__first_ + __pos / __bits_per_word, __pos % __bits_per_word); 431 } 432 433 _LIBCPP_HIDE_FROM_ABI void operator&=(const __bitset& __v) _NOEXCEPT; 434 _LIBCPP_HIDE_FROM_ABI void operator|=(const __bitset& __v) _NOEXCEPT; 435 _LIBCPP_HIDE_FROM_ABI void operator^=(const __bitset& __v) _NOEXCEPT; 436 437 _LIBCPP_HIDE_FROM_ABI void flip() _NOEXCEPT; 438 439 _LIBCPP_HIDE_FROM_ABI unsigned long to_ulong() const; 440 _LIBCPP_HIDE_FROM_ABI unsigned long long to_ullong() const; 441 442 _LIBCPP_HIDE_FROM_ABI bool all() const _NOEXCEPT; 443 _LIBCPP_HIDE_FROM_ABI bool any() const _NOEXCEPT; 444 445 _LIBCPP_HIDE_FROM_ABI size_t __hash_code() const _NOEXCEPT; 446}; 447 448template <size_t _Size> 449inline __bitset<1, _Size>::__bitset() _NOEXCEPT : __first_(0) {} 450 451template <size_t _Size> 452inline __bitset<1, _Size>::__bitset(unsigned long long __v) _NOEXCEPT 453 : __first_(_Size == __bits_per_word ? static_cast<__storage_type>(__v) 454 : static_cast<__storage_type>(__v) & ((__storage_type(1) << _Size) - 1)) {} 455 456template <size_t _Size> 457inline _LIBCPP_HIDE_FROM_ABI void __bitset<1, _Size>::operator&=(const __bitset& __v) _NOEXCEPT { 458 __first_ &= __v.__first_; 459} 460 461template <size_t _Size> 462inline _LIBCPP_HIDE_FROM_ABI void __bitset<1, _Size>::operator|=(const __bitset& __v) _NOEXCEPT { 463 __first_ |= __v.__first_; 464} 465 466template <size_t _Size> 467inline _LIBCPP_HIDE_FROM_ABI void __bitset<1, _Size>::operator^=(const __bitset& __v) _NOEXCEPT { 468 __first_ ^= __v.__first_; 469} 470 471template <size_t _Size> 472inline _LIBCPP_HIDE_FROM_ABI void __bitset<1, _Size>::flip() _NOEXCEPT { 473 __storage_type __m = ~__storage_type(0) >> (__bits_per_word - _Size); 474 __first_ = ~__first_; 475 __first_ &= __m; 476} 477 478template <size_t _Size> 479inline unsigned long __bitset<1, _Size>::to_ulong() const { 480 return __first_; 481} 482 483template <size_t _Size> 484inline _LIBCPP_HIDE_FROM_ABI unsigned long long __bitset<1, _Size>::to_ullong() const { 485 return __first_; 486} 487 488template <size_t _Size> 489inline _LIBCPP_HIDE_FROM_ABI bool __bitset<1, _Size>::all() const _NOEXCEPT { 490 __storage_type __m = ~__storage_type(0) >> (__bits_per_word - _Size); 491 return !(~__first_ & __m); 492} 493 494template <size_t _Size> 495inline _LIBCPP_HIDE_FROM_ABI bool __bitset<1, _Size>::any() const _NOEXCEPT { 496 __storage_type __m = ~__storage_type(0) >> (__bits_per_word - _Size); 497 return __first_ & __m; 498} 499 500template <size_t _Size> 501inline size_t __bitset<1, _Size>::__hash_code() const _NOEXCEPT { 502 return __first_; 503} 504 505template <> 506class __bitset<0, 0> { 507public: 508 typedef ptrdiff_t difference_type; 509 typedef size_t size_type; 510 typedef size_type __storage_type; 511 512protected: 513 typedef __bitset __self; 514 typedef __storage_type* __storage_pointer; 515 typedef const __storage_type* __const_storage_pointer; 516 static const unsigned __bits_per_word = static_cast<unsigned>(sizeof(__storage_type) * CHAR_BIT); 517 518 friend class __bit_reference<__bitset>; 519 friend class __bit_const_reference<__bitset>; 520 friend class __bit_iterator<__bitset, false>; 521 friend class __bit_iterator<__bitset, true>; 522 friend struct __bit_array<__bitset>; 523 524 typedef __bit_reference<__bitset> reference; 525 typedef __bit_const_reference<__bitset> const_reference; 526 typedef __bit_iterator<__bitset, false> iterator; 527 typedef __bit_iterator<__bitset, true> const_iterator; 528 529 _LIBCPP_HIDE_FROM_ABI __bitset() _NOEXCEPT; 530 _LIBCPP_HIDE_FROM_ABI explicit __bitset(unsigned long long) _NOEXCEPT; 531 532 _LIBCPP_HIDE_FROM_ABI reference __make_ref(size_t) _NOEXCEPT { return reference(nullptr, 1); } 533 _LIBCPP_HIDE_FROM_ABI const_reference __make_ref(size_t) const _NOEXCEPT { return const_reference(nullptr, 1); } 534 _LIBCPP_HIDE_FROM_ABI iterator __make_iter(size_t) _NOEXCEPT { return iterator(nullptr, 0); } 535 _LIBCPP_HIDE_FROM_ABI const_iterator __make_iter(size_t) const _NOEXCEPT { return const_iterator(nullptr, 0); } 536 537 _LIBCPP_HIDE_FROM_ABI void operator&=(const __bitset&) _NOEXCEPT {} 538 _LIBCPP_HIDE_FROM_ABI void operator|=(const __bitset&) _NOEXCEPT {} 539 _LIBCPP_HIDE_FROM_ABI void operator^=(const __bitset&) _NOEXCEPT {} 540 541 _LIBCPP_HIDE_FROM_ABI void flip() _NOEXCEPT {} 542 543 _LIBCPP_HIDE_FROM_ABI unsigned long to_ulong() const { return 0; } 544 _LIBCPP_HIDE_FROM_ABI unsigned long long to_ullong() const { return 0; } 545 546 _LIBCPP_HIDE_FROM_ABI bool all() const _NOEXCEPT { return true; } 547 _LIBCPP_HIDE_FROM_ABI bool any() const _NOEXCEPT { return false; } 548 549 _LIBCPP_HIDE_FROM_ABI size_t __hash_code() const _NOEXCEPT { return 0; } 550}; 551 552inline __bitset<0, 0>::__bitset() _NOEXCEPT {} 553 554inline __bitset<0, 0>::__bitset(unsigned long long) _NOEXCEPT {} 555 556template <size_t _Size> 557class _LIBCPP_TEMPLATE_VIS bitset; 558template <size_t _Size> 559struct hash<bitset<_Size> >; 560 561template <size_t _Size> 562class _LIBCPP_TEMPLATE_VIS bitset 563 : private __bitset<_Size == 0 ? 0 : (_Size - 1) / (sizeof(size_t) * CHAR_BIT) + 1, _Size> { 564public: 565 static const unsigned __n_words = _Size == 0 ? 0 : (_Size - 1) / (sizeof(size_t) * CHAR_BIT) + 1; 566 typedef __bitset<__n_words, _Size> base; 567 568public: 569 typedef typename base::reference reference; 570 typedef typename base::const_reference const_reference; 571 572 // 23.3.5.1 constructors: 573 _LIBCPP_HIDE_FROM_ABI bitset() _NOEXCEPT {} 574 _LIBCPP_HIDE_FROM_ABI bitset(unsigned long long __v) _NOEXCEPT : base(__v) {} 575 template <class _CharT, __enable_if_t<_IsCharLikeType<_CharT>::value, int> = 0> 576 _LIBCPP_HIDE_FROM_ABI explicit bitset( 577 const _CharT* __str, 578 typename basic_string<_CharT>::size_type __n = basic_string<_CharT>::npos, 579 _CharT __zero = _CharT('0'), 580 _CharT __one = _CharT('1')) { 581 size_t __rlen = std::min(__n, char_traits<_CharT>::length(__str)); 582 __init_from_string_view(basic_string_view<_CharT>(__str, __rlen), __zero, __one); 583 } 584 585 template <class _CharT, class _Traits, class _Allocator> 586 _LIBCPP_HIDE_FROM_ABI explicit bitset( 587 const basic_string<_CharT, _Traits, _Allocator>& __str, 588 typename basic_string<_CharT, _Traits, _Allocator>::size_type __pos = 0, 589 typename basic_string<_CharT, _Traits, _Allocator>::size_type __n = 590 basic_string<_CharT, _Traits, _Allocator>::npos, 591 _CharT __zero = _CharT('0'), 592 _CharT __one = _CharT('1')) { 593 if (__pos > __str.size()) 594 std::__throw_out_of_range("bitset string pos out of range"); 595 596 size_t __rlen = std::min(__n, __str.size() - __pos); 597 __init_from_string_view(basic_string_view<_CharT, _Traits>(__str.data() + __pos, __rlen), __zero, __one); 598 } 599 600 // 23.3.5.2 bitset operations: 601 _LIBCPP_HIDE_FROM_ABI bitset& operator&=(const bitset& __rhs) _NOEXCEPT; 602 _LIBCPP_HIDE_FROM_ABI bitset& operator|=(const bitset& __rhs) _NOEXCEPT; 603 _LIBCPP_HIDE_FROM_ABI bitset& operator^=(const bitset& __rhs) _NOEXCEPT; 604 _LIBCPP_HIDE_FROM_ABI bitset& operator<<=(size_t __pos) _NOEXCEPT; 605 _LIBCPP_HIDE_FROM_ABI bitset& operator>>=(size_t __pos) _NOEXCEPT; 606 _LIBCPP_HIDE_FROM_ABI bitset& set() _NOEXCEPT; 607 _LIBCPP_HIDE_FROM_ABI bitset& set(size_t __pos, bool __val = true); 608 _LIBCPP_HIDE_FROM_ABI bitset& reset() _NOEXCEPT; 609 _LIBCPP_HIDE_FROM_ABI bitset& reset(size_t __pos); 610 _LIBCPP_HIDE_FROM_ABI bitset operator~() const _NOEXCEPT; 611 _LIBCPP_HIDE_FROM_ABI bitset& flip() _NOEXCEPT; 612 _LIBCPP_HIDE_FROM_ABI bitset& flip(size_t __pos); 613 614 // element access: 615#ifdef _LIBCPP_ABI_BITSET_VECTOR_BOOL_CONST_SUBSCRIPT_RETURN_BOOL 616 _LIBCPP_HIDE_FROM_ABI bool operator[](size_t __p) const { return base::__make_ref(__p); } 617#else 618 _LIBCPP_HIDE_FROM_ABI const_reference operator[](size_t __p) const { return base::__make_ref(__p); } 619#endif 620 _LIBCPP_HIDE_FROM_ABI reference operator[](size_t __p) { return base::__make_ref(__p); } 621 _LIBCPP_HIDE_FROM_ABI unsigned long to_ulong() const; 622 _LIBCPP_HIDE_FROM_ABI unsigned long long to_ullong() const; 623 template <class _CharT, class _Traits, class _Allocator> 624 _LIBCPP_HIDE_FROM_ABI basic_string<_CharT, _Traits, _Allocator> 625 to_string(_CharT __zero = _CharT('0'), _CharT __one = _CharT('1')) const; 626 template <class _CharT, class _Traits> 627 _LIBCPP_HIDE_FROM_ABI basic_string<_CharT, _Traits, allocator<_CharT> > 628 to_string(_CharT __zero = _CharT('0'), _CharT __one = _CharT('1')) const; 629 template <class _CharT> 630 _LIBCPP_HIDE_FROM_ABI basic_string<_CharT, char_traits<_CharT>, allocator<_CharT> > 631 to_string(_CharT __zero = _CharT('0'), _CharT __one = _CharT('1')) const; 632 _LIBCPP_HIDE_FROM_ABI basic_string<char, char_traits<char>, allocator<char> > 633 to_string(char __zero = '0', char __one = '1') const; 634 _LIBCPP_HIDE_FROM_ABI size_t count() const _NOEXCEPT; 635 _LIBCPP_HIDE_FROM_ABI size_t size() const _NOEXCEPT { return _Size; } 636 _LIBCPP_HIDE_FROM_ABI bool operator==(const bitset& __rhs) const _NOEXCEPT; 637 _LIBCPP_HIDE_FROM_ABI bool operator!=(const bitset& __rhs) const _NOEXCEPT; 638 _LIBCPP_HIDE_FROM_ABI bool test(size_t __pos) const; 639 _LIBCPP_HIDE_FROM_ABI bool all() const _NOEXCEPT; 640 _LIBCPP_HIDE_FROM_ABI bool any() const _NOEXCEPT; 641 _LIBCPP_HIDE_FROM_ABI bool none() const _NOEXCEPT { return !any(); } 642 _LIBCPP_HIDE_FROM_ABI bitset operator<<(size_t __pos) const _NOEXCEPT; 643 _LIBCPP_HIDE_FROM_ABI bitset operator>>(size_t __pos) const _NOEXCEPT; 644 645private: 646 template <class _CharT, class _Traits> 647 _LIBCPP_HIDE_FROM_ABI void 648 __init_from_string_view(basic_string_view<_CharT, _Traits> __str, _CharT __zero, _CharT __one) { 649 for (size_t __i = 0; __i < __str.size(); ++__i) 650 if (!_Traits::eq(__str[__i], __zero) && !_Traits::eq(__str[__i], __one)) 651 std::__throw_invalid_argument("bitset string ctor has invalid argument"); 652 653 size_t __mp = std::min(__str.size(), _Size); 654 size_t __i = 0; 655 for (; __i < __mp; ++__i) { 656 _CharT __c = __str[__mp - 1 - __i]; 657 (*this)[__i] = _Traits::eq(__c, __one); 658 } 659 std::fill(base::__make_iter(__i), base::__make_iter(_Size), false); 660 } 661 662 _LIBCPP_HIDE_FROM_ABI size_t __hash_code() const _NOEXCEPT { return base::__hash_code(); } 663 664 friend struct hash<bitset>; 665}; 666 667template <size_t _Size> 668inline _LIBCPP_HIDE_FROM_ABI bitset<_Size>& bitset<_Size>::operator&=(const bitset& __rhs) _NOEXCEPT { 669 base::operator&=(__rhs); 670 return *this; 671} 672 673template <size_t _Size> 674inline _LIBCPP_HIDE_FROM_ABI bitset<_Size>& bitset<_Size>::operator|=(const bitset& __rhs) _NOEXCEPT { 675 base::operator|=(__rhs); 676 return *this; 677} 678 679template <size_t _Size> 680inline _LIBCPP_HIDE_FROM_ABI bitset<_Size>& bitset<_Size>::operator^=(const bitset& __rhs) _NOEXCEPT { 681 base::operator^=(__rhs); 682 return *this; 683} 684 685template <size_t _Size> 686_LIBCPP_HIDE_FROM_ABI bitset<_Size>& bitset<_Size>::operator<<=(size_t __pos) _NOEXCEPT { 687 __pos = std::min(__pos, _Size); 688 std::copy_backward(base::__make_iter(0), base::__make_iter(_Size - __pos), base::__make_iter(_Size)); 689 std::fill_n(base::__make_iter(0), __pos, false); 690 return *this; 691} 692 693template <size_t _Size> 694_LIBCPP_HIDE_FROM_ABI bitset<_Size>& bitset<_Size>::operator>>=(size_t __pos) _NOEXCEPT { 695 __pos = std::min(__pos, _Size); 696 std::copy(base::__make_iter(__pos), base::__make_iter(_Size), base::__make_iter(0)); 697 std::fill_n(base::__make_iter(_Size - __pos), __pos, false); 698 return *this; 699} 700 701template <size_t _Size> 702inline _LIBCPP_HIDE_FROM_ABI bitset<_Size>& bitset<_Size>::set() _NOEXCEPT { 703 std::fill_n(base::__make_iter(0), _Size, true); 704 return *this; 705} 706 707template <size_t _Size> 708_LIBCPP_HIDE_FROM_ABI bitset<_Size>& bitset<_Size>::set(size_t __pos, bool __val) { 709 if (__pos >= _Size) 710 __throw_out_of_range("bitset set argument out of range"); 711 712 (*this)[__pos] = __val; 713 return *this; 714} 715 716template <size_t _Size> 717inline _LIBCPP_HIDE_FROM_ABI bitset<_Size>& bitset<_Size>::reset() _NOEXCEPT { 718 std::fill_n(base::__make_iter(0), _Size, false); 719 return *this; 720} 721 722template <size_t _Size> 723_LIBCPP_HIDE_FROM_ABI bitset<_Size>& bitset<_Size>::reset(size_t __pos) { 724 if (__pos >= _Size) 725 __throw_out_of_range("bitset reset argument out of range"); 726 727 (*this)[__pos] = false; 728 return *this; 729} 730 731template <size_t _Size> 732inline _LIBCPP_HIDE_FROM_ABI bitset<_Size> bitset<_Size>::operator~() const _NOEXCEPT { 733 bitset __x(*this); 734 __x.flip(); 735 return __x; 736} 737 738template <size_t _Size> 739inline _LIBCPP_HIDE_FROM_ABI bitset<_Size>& bitset<_Size>::flip() _NOEXCEPT { 740 base::flip(); 741 return *this; 742} 743 744template <size_t _Size> 745_LIBCPP_HIDE_FROM_ABI bitset<_Size>& bitset<_Size>::flip(size_t __pos) { 746 if (__pos >= _Size) 747 __throw_out_of_range("bitset flip argument out of range"); 748 749 reference __r = base::__make_ref(__pos); 750 __r = ~__r; 751 return *this; 752} 753 754template <size_t _Size> 755inline _LIBCPP_HIDE_FROM_ABI unsigned long bitset<_Size>::to_ulong() const { 756 return base::to_ulong(); 757} 758 759template <size_t _Size> 760inline _LIBCPP_HIDE_FROM_ABI unsigned long long bitset<_Size>::to_ullong() const { 761 return base::to_ullong(); 762} 763 764template <size_t _Size> 765template <class _CharT, class _Traits, class _Allocator> 766_LIBCPP_HIDE_FROM_ABI basic_string<_CharT, _Traits, _Allocator> 767bitset<_Size>::to_string(_CharT __zero, _CharT __one) const { 768 basic_string<_CharT, _Traits, _Allocator> __r(_Size, __zero); 769 for (size_t __i = 0; __i != _Size; ++__i) { 770 if ((*this)[__i]) 771 __r[_Size - 1 - __i] = __one; 772 } 773 return __r; 774} 775 776template <size_t _Size> 777template <class _CharT, class _Traits> 778inline _LIBCPP_HIDE_FROM_ABI basic_string<_CharT, _Traits, allocator<_CharT> > 779bitset<_Size>::to_string(_CharT __zero, _CharT __one) const { 780 return to_string<_CharT, _Traits, allocator<_CharT> >(__zero, __one); 781} 782 783template <size_t _Size> 784template <class _CharT> 785inline _LIBCPP_HIDE_FROM_ABI basic_string<_CharT, char_traits<_CharT>, allocator<_CharT> > 786bitset<_Size>::to_string(_CharT __zero, _CharT __one) const { 787 return to_string<_CharT, char_traits<_CharT>, allocator<_CharT> >(__zero, __one); 788} 789 790template <size_t _Size> 791inline _LIBCPP_HIDE_FROM_ABI basic_string<char, char_traits<char>, allocator<char> > 792bitset<_Size>::to_string(char __zero, char __one) const { 793 return to_string<char, char_traits<char>, allocator<char> >(__zero, __one); 794} 795 796template <size_t _Size> 797inline _LIBCPP_HIDE_FROM_ABI size_t bitset<_Size>::count() const _NOEXCEPT { 798 return static_cast<size_t>(std::count(base::__make_iter(0), base::__make_iter(_Size), true)); 799} 800 801template <size_t _Size> 802inline _LIBCPP_HIDE_FROM_ABI bool bitset<_Size>::operator==(const bitset& __rhs) const _NOEXCEPT { 803 return std::equal(base::__make_iter(0), base::__make_iter(_Size), __rhs.__make_iter(0)); 804} 805 806template <size_t _Size> 807inline _LIBCPP_HIDE_FROM_ABI bool bitset<_Size>::operator!=(const bitset& __rhs) const _NOEXCEPT { 808 return !(*this == __rhs); 809} 810 811template <size_t _Size> 812_LIBCPP_HIDE_FROM_ABI bool bitset<_Size>::test(size_t __pos) const { 813 if (__pos >= _Size) 814 __throw_out_of_range("bitset test argument out of range"); 815 816 return (*this)[__pos]; 817} 818 819template <size_t _Size> 820inline _LIBCPP_HIDE_FROM_ABI bool bitset<_Size>::all() const _NOEXCEPT { 821 return base::all(); 822} 823 824template <size_t _Size> 825inline _LIBCPP_HIDE_FROM_ABI bool bitset<_Size>::any() const _NOEXCEPT { 826 return base::any(); 827} 828 829template <size_t _Size> 830inline _LIBCPP_HIDE_FROM_ABI bitset<_Size> bitset<_Size>::operator<<(size_t __pos) const _NOEXCEPT { 831 bitset __r = *this; 832 __r <<= __pos; 833 return __r; 834} 835 836template <size_t _Size> 837inline _LIBCPP_HIDE_FROM_ABI bitset<_Size> bitset<_Size>::operator>>(size_t __pos) const _NOEXCEPT { 838 bitset __r = *this; 839 __r >>= __pos; 840 return __r; 841} 842 843template <size_t _Size> 844inline _LIBCPP_HIDE_FROM_ABI bitset<_Size> operator&(const bitset<_Size>& __x, const bitset<_Size>& __y) _NOEXCEPT { 845 bitset<_Size> __r = __x; 846 __r &= __y; 847 return __r; 848} 849 850template <size_t _Size> 851inline _LIBCPP_HIDE_FROM_ABI bitset<_Size> operator|(const bitset<_Size>& __x, const bitset<_Size>& __y) _NOEXCEPT { 852 bitset<_Size> __r = __x; 853 __r |= __y; 854 return __r; 855} 856 857template <size_t _Size> 858inline _LIBCPP_HIDE_FROM_ABI bitset<_Size> operator^(const bitset<_Size>& __x, const bitset<_Size>& __y) _NOEXCEPT { 859 bitset<_Size> __r = __x; 860 __r ^= __y; 861 return __r; 862} 863 864template <size_t _Size> 865struct _LIBCPP_TEMPLATE_VIS hash<bitset<_Size> > : public __unary_function<bitset<_Size>, size_t> { 866 _LIBCPP_HIDE_FROM_ABI size_t operator()(const bitset<_Size>& __bs) const _NOEXCEPT { return __bs.__hash_code(); } 867}; 868 869template <class _CharT, class _Traits, size_t _Size> 870_LIBCPP_HIDE_FROM_ABI basic_istream<_CharT, _Traits>& 871operator>>(basic_istream<_CharT, _Traits>& __is, bitset<_Size>& __x); 872 873template <class _CharT, class _Traits, size_t _Size> 874_LIBCPP_HIDE_FROM_ABI basic_ostream<_CharT, _Traits>& 875operator<<(basic_ostream<_CharT, _Traits>& __os, const bitset<_Size>& __x); 876 877_LIBCPP_END_NAMESPACE_STD 878 879_LIBCPP_POP_MACROS 880 881#if !defined(_LIBCPP_REMOVE_TRANSITIVE_INCLUDES) 882# include <__cxx03/cstdlib> 883# include <__cxx03/type_traits> 884#endif 885 886#endif // _LIBCPP___CXX03_BITSET 887