darlinghq/darling-libcxx
1
0
Fork 0
mirror of https://github.com/darlinghq/darling-libcxx.git synced 2024-11-27 05:40:48 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity
release_36
darling-libcxx/include/bitset
Nico Weber 0211e86a5e Make locales (and transitively, std::endl) work reliably with gcc. 
libc++ currently relies on undefined initialization order of global
initializers when using gcc:

1. __start_std_streams in iostream.cpp calls locale:🆔:_init, which assigns
   an id to each locale::facet in an initializer

2. Every facet has a static locale::id id, whose constructor sets the facet's
   id to 0

If 2 runs after 1, it clobbers the facet's assigned consecutive id, causing
exceptions to be thrown when e.g. running code like "cout << endl".

To fix this, let _LIBCPP_CONSTEXPR evaluate to "constexpr" instead of nothing
with gcc.  locale::id's constructor is marked _LIBCPP_CONSTEXPR, which ensures
that it won't get an initializer that could potentially run after the
iostream.cpp initializer. (This remains broken when building with msvc.)

Also switch constexpr-specific code in bitset to use __SIZEOF_SIZE_T__ instead
of __SIZE_WIDTH__, because gcc doesn't define the latter.

Pair-programmed/debugged with Dana Jansens.


git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@210188 91177308-0d34-0410-b5e6-96231b3b80d8
2014-06-04 15:46:56 +00:00

1082 lines
33 KiB
C++
Raw Permalink Blame History

// -*- C++ -*-
//===---------------------------- bitset ----------------------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is dual licensed under the MIT and the University of Illinois Open
// Source Licenses. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#ifndef _LIBCPP_BITSET
#define _LIBCPP_BITSET
/*
bitset synopsis
namespace std
{
namespace std {
template <size_t N>
class bitset
{
public:
// bit reference:
class reference
{
friend class bitset;
reference() noexcept;
public:
~reference() noexcept;
reference& operator=(bool x) noexcept; // for b[i] = x;
reference& operator=(const reference&) noexcept; // for b[i] = b[j];
bool operator~() const noexcept; // flips the bit
operator bool() const noexcept; // for x = b[i];
reference& flip() noexcept; // for b[i].flip();
};
// 23.3.5.1 constructors:
constexpr bitset() noexcept;
constexpr bitset(unsigned long long val) noexcept;
template <class charT>
explicit bitset(const charT* str,
typename basic_string<charT>::size_type n = basic_string<charT>::npos,
charT zero = charT('0'), charT one = charT('1'));
template<class charT, class traits, class Allocator>
explicit bitset(const basic_string<charT,traits,Allocator>& str,
typename basic_string<charT,traits,Allocator>::size_type pos = 0,
typename basic_string<charT,traits,Allocator>::size_type n =
basic_string<charT,traits,Allocator>::npos,
charT zero = charT('0'), charT one = charT('1'));
// 23.3.5.2 bitset operations:
bitset& operator&=(const bitset& rhs) noexcept;
bitset& operator|=(const bitset& rhs) noexcept;
bitset& operator^=(const bitset& rhs) noexcept;
bitset& operator<<=(size_t pos) noexcept;
bitset& operator>>=(size_t pos) noexcept;
bitset& set() noexcept;
bitset& set(size_t pos, bool val = true);
bitset& reset() noexcept;
bitset& reset(size_t pos);
bitset operator~() const noexcept;
bitset& flip() noexcept;
bitset& flip(size_t pos);
// element access:
constexpr bool operator[](size_t pos) const; // for b[i];
reference operator[](size_t pos); // for b[i];
unsigned long to_ulong() const;
unsigned long long to_ullong() const;
template <class charT, class traits, class Allocator>
basic_string<charT, traits, Allocator> to_string(charT zero = charT('0'), charT one = charT('1')) const;
template <class charT, class traits>
basic_string<charT, traits, allocator<charT> > to_string(charT zero = charT('0'), charT one = charT('1')) const;
template <class charT>
basic_string<charT, char_traits<charT>, allocator<charT> > to_string(charT zero = charT('0'), charT one = charT('1')) const;
basic_string<char, char_traits<char>, allocator<char> > to_string(char zero = '0', char one = '1') const;
size_t count() const noexcept;
constexpr size_t size() const noexcept;
bool operator==(const bitset& rhs) const noexcept;
bool operator!=(const bitset& rhs) const noexcept;
bool test(size_t pos) const;
bool all() const noexcept;
bool any() const noexcept;
bool none() const noexcept;
bitset operator<<(size_t pos) const noexcept;
bitset operator>>(size_t pos) const noexcept;
};
// 23.3.5.3 bitset operators:
template <size_t N>
bitset<N> operator&(const bitset<N>&, const bitset<N>&) noexcept;
template <size_t N>
bitset<N> operator|(const bitset<N>&, const bitset<N>&) noexcept;
template <size_t N>
bitset<N> operator^(const bitset<N>&, const bitset<N>&) noexcept;
template <class charT, class traits, size_t N>
basic_istream<charT, traits>&
operator>>(basic_istream<charT, traits>& is, bitset<N>& x);
template <class charT, class traits, size_t N>
basic_ostream<charT, traits>&
operator<<(basic_ostream<charT, traits>& os, const bitset<N>& x);
template <size_t N> struct hash<std::bitset<N>>;
} // std
*/
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
#pragma GCC system_header
#endif
#include <__config>
#include <__bit_reference>
#include <cstddef>
#include <climits>
#include <string>
#include <stdexcept>
#include <iosfwd>
#include <__functional_base>
#if defined(_LIBCPP_NO_EXCEPTIONS)
#include <cassert>
#endif
#include <__undef_min_max>
_LIBCPP_BEGIN_NAMESPACE_STD
template <size_t _N_words, size_t _Size>
class __bitset;
template <size_t _N_words, size_t _Size>
struct __has_storage_type<__bitset<_N_words, _Size> >
{
static const bool value = true;
};
template <size_t _N_words, size_t _Size>
class __bitset
{
public:
typedef ptrdiff_t difference_type;
typedef size_t size_type;
typedef size_type __storage_type;
protected:
typedef __bitset __self;
typedef __storage_type* __storage_pointer;
typedef const __storage_type* __const_storage_pointer;
static const unsigned __bits_per_word = static_cast<unsigned>(sizeof(__storage_type) * CHAR_BIT);
friend class __bit_reference<__bitset>;
friend class __bit_const_reference<__bitset>;
friend class __bit_iterator<__bitset, false>;
friend class __bit_iterator<__bitset, true>;
friend struct __bit_array<__bitset>;
__storage_type __first_[_N_words];
typedef __bit_reference<__bitset> reference;
typedef __bit_const_reference<__bitset> const_reference;
typedef __bit_iterator<__bitset, false> iterator;
typedef __bit_iterator<__bitset, true> const_iterator;
_LIBCPP_CONSTEXPR __bitset() _NOEXCEPT;
explicit _LIBCPP_CONSTEXPR __bitset(unsigned long long __v) _NOEXCEPT;
_LIBCPP_INLINE_VISIBILITY reference __make_ref(size_t __pos) _NOEXCEPT
{return reference(__first_ + __pos / __bits_per_word, __storage_type(1) << __pos % __bits_per_word);}
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR const_reference __make_ref(size_t __pos) const _NOEXCEPT
{return const_reference(__first_ + __pos / __bits_per_word, __storage_type(1) << __pos % __bits_per_word);}
_LIBCPP_INLINE_VISIBILITY iterator __make_iter(size_t __pos) _NOEXCEPT
{return iterator(__first_ + __pos / __bits_per_word, __pos % __bits_per_word);}
_LIBCPP_INLINE_VISIBILITY const_iterator __make_iter(size_t __pos) const _NOEXCEPT
{return const_iterator(__first_ + __pos / __bits_per_word, __pos % __bits_per_word);}
void operator&=(const __bitset& __v) _NOEXCEPT;
void operator|=(const __bitset& __v) _NOEXCEPT;
void operator^=(const __bitset& __v) _NOEXCEPT;
void flip() _NOEXCEPT;
_LIBCPP_INLINE_VISIBILITY unsigned long to_ulong() const
{return to_ulong(integral_constant<bool, _Size < sizeof(unsigned long) * CHAR_BIT>());}
_LIBCPP_INLINE_VISIBILITY unsigned long long to_ullong() const
{return to_ullong(integral_constant<bool, _Size < sizeof(unsigned long long) * CHAR_BIT>());}
bool all() const _NOEXCEPT;
bool any() const _NOEXCEPT;
size_t __hash_code() const _NOEXCEPT;
private:
#ifdef _LIBCPP_HAS_NO_CONSTEXPR
void __init(unsigned long long __v, false_type) _NOEXCEPT;
void __init(unsigned long long __v, true_type) _NOEXCEPT;
#endif // _LIBCPP_HAS_NO_CONSTEXPR
unsigned long to_ulong(false_type) const;
unsigned long to_ulong(true_type) const;
unsigned long long to_ullong(false_type) const;
unsigned long long to_ullong(true_type) const;
unsigned long long to_ullong(true_type, false_type) const;
unsigned long long to_ullong(true_type, true_type) const;
};
template <size_t _N_words, size_t _Size>
inline _LIBCPP_INLINE_VISIBILITY
_LIBCPP_CONSTEXPR
__bitset<_N_words, _Size>::__bitset() _NOEXCEPT
#ifndef _LIBCPP_HAS_NO_CONSTEXPR
: __first_{0}
#endif
{
#ifdef _LIBCPP_HAS_NO_CONSTEXPR
_VSTD::fill_n(__first_, _N_words, __storage_type(0));
#endif
}
#ifdef _LIBCPP_HAS_NO_CONSTEXPR
template <size_t _N_words, size_t _Size>
void
__bitset<_N_words, _Size>::__init(unsigned long long __v, false_type) _NOEXCEPT
{
__storage_type __t[sizeof(unsigned long long) / sizeof(__storage_type)];
for (size_t __i = 0; __i < sizeof(__t)/sizeof(__t[0]); ++__i, __v >>= __bits_per_word)
__t[__i] = static_cast<__storage_type>(__v);
_VSTD::copy(__t, __t + sizeof(__t)/sizeof(__t[0]), __first_);
_VSTD::fill(__first_ + sizeof(__t)/sizeof(__t[0]), __first_ + sizeof(__first_)/sizeof(__first_[0]),
__storage_type(0));
}
template <size_t _N_words, size_t _Size>
inline _LIBCPP_INLINE_VISIBILITY
void
__bitset<_N_words, _Size>::__init(unsigned long long __v, true_type) _NOEXCEPT
{
__first_[0] = __v;
_VSTD::fill(__first_ + 1, __first_ + sizeof(__first_)/sizeof(__first_[0]), __storage_type(0));
}
#endif // _LIBCPP_HAS_NO_CONSTEXPR
template <size_t _N_words, size_t _Size>
inline _LIBCPP_INLINE_VISIBILITY
_LIBCPP_CONSTEXPR
__bitset<_N_words, _Size>::__bitset(unsigned long long __v) _NOEXCEPT
#ifndef _LIBCPP_HAS_NO_CONSTEXPR
#if __SIZEOF_SIZE_T__ == 8
: __first_{__v}
#elif __SIZEOF_SIZE_T__ == 4
: __first_{__v, __v >> __bits_per_word}
#else
#error This constructor has not been ported to this platform
#endif
#endif
{
#ifdef _LIBCPP_HAS_NO_CONSTEXPR
__init(__v, integral_constant<bool, sizeof(unsigned long long) == sizeof(__storage_type)>());
#endif
}
template <size_t _N_words, size_t _Size>
inline _LIBCPP_INLINE_VISIBILITY
void
__bitset<_N_words, _Size>::operator&=(const __bitset& __v) _NOEXCEPT
{
for (size_type __i = 0; __i < _N_words; ++__i)
__first_[__i] &= __v.__first_[__i];
}
template <size_t _N_words, size_t _Size>
inline _LIBCPP_INLINE_VISIBILITY
void
__bitset<_N_words, _Size>::operator|=(const __bitset& __v) _NOEXCEPT
{
for (size_type __i = 0; __i < _N_words; ++__i)
__first_[__i] |= __v.__first_[__i];
}
template <size_t _N_words, size_t _Size>
inline _LIBCPP_INLINE_VISIBILITY
void
__bitset<_N_words, _Size>::operator^=(const __bitset& __v) _NOEXCEPT
{
for (size_type __i = 0; __i < _N_words; ++__i)
__first_[__i] ^= __v.__first_[__i];
}
template <size_t _N_words, size_t _Size>
void
__bitset<_N_words, _Size>::flip() _NOEXCEPT
{
// do middle whole words
size_type __n = _Size;
__storage_pointer __p = __first_;
for (; __n >= __bits_per_word; ++__p, __n -= __bits_per_word)
*__p = ~*__p;
// do last partial word
if (__n > 0)
{
__storage_type __m = ~__storage_type(0) >> (__bits_per_word - __n);
__storage_type __b = *__p & __m;
*__p &= ~__m;
*__p |= ~__b & __m;
}
}
template <size_t _N_words, size_t _Size>
unsigned long
__bitset<_N_words, _Size>::to_ulong(false_type) const
{
const_iterator __e = __make_iter(_Size);
const_iterator __i = _VSTD::find(__make_iter(sizeof(unsigned long) * CHAR_BIT), __e, true);
if (__i != __e)
#ifndef _LIBCPP_NO_EXCEPTIONS
throw overflow_error("bitset to_ulong overflow error");
#else
assert(!"bitset to_ulong overflow error");
#endif
return __first_[0];
}
template <size_t _N_words, size_t _Size>
inline _LIBCPP_INLINE_VISIBILITY
unsigned long
__bitset<_N_words, _Size>::to_ulong(true_type) const
{
return __first_[0];
}
template <size_t _N_words, size_t _Size>
unsigned long long
__bitset<_N_words, _Size>::to_ullong(false_type) const
{
const_iterator __e = __make_iter(_Size);
const_iterator __i = _VSTD::find(__make_iter(sizeof(unsigned long long) * CHAR_BIT), __e, true);
if (__i != __e)
#ifndef _LIBCPP_NO_EXCEPTIONS
throw overflow_error("bitset to_ullong overflow error");
#else
assert(!"bitset to_ullong overflow error");
#endif
return to_ullong(true_type());
}
template <size_t _N_words, size_t _Size>
inline _LIBCPP_INLINE_VISIBILITY
unsigned long long
__bitset<_N_words, _Size>::to_ullong(true_type) const
{
return to_ullong(true_type(), integral_constant<bool, sizeof(__storage_type) < sizeof(unsigned long long)>());
}
template <size_t _N_words, size_t _Size>
inline _LIBCPP_INLINE_VISIBILITY
unsigned long long
__bitset<_N_words, _Size>::to_ullong(true_type, false_type) const
{
return __first_[0];
}
template <size_t _N_words, size_t _Size>
unsigned long long
__bitset<_N_words, _Size>::to_ullong(true_type, true_type) const
{
unsigned long long __r = __first_[0];
for (std::size_t __i = 1; __i < sizeof(unsigned long long) / sizeof(__storage_type); ++__i)
__r |= static_cast<unsigned long long>(__first_[__i]) << (sizeof(__storage_type) * CHAR_BIT);
return __r;
}
template <size_t _N_words, size_t _Size>
bool
__bitset<_N_words, _Size>::all() const _NOEXCEPT
{
// do middle whole words
size_type __n = _Size;
__const_storage_pointer __p = __first_;
for (; __n >= __bits_per_word; ++__p, __n -= __bits_per_word)
if (~*__p)
return false;
// do last partial word
if (__n > 0)
{
__storage_type __m = ~__storage_type(0) >> (__bits_per_word - __n);
if (~*__p & __m)
return false;
}
return true;
}
template <size_t _N_words, size_t _Size>
bool
__bitset<_N_words, _Size>::any() const _NOEXCEPT
{
// do middle whole words
size_type __n = _Size;
__const_storage_pointer __p = __first_;
for (; __n >= __bits_per_word; ++__p, __n -= __bits_per_word)
if (*__p)
return true;
// do last partial word
if (__n > 0)
{
__storage_type __m = ~__storage_type(0) >> (__bits_per_word - __n);
if (*__p & __m)
return true;
}
return false;
}
template <size_t _N_words, size_t _Size>
inline _LIBCPP_INLINE_VISIBILITY
size_t
__bitset<_N_words, _Size>::__hash_code() const _NOEXCEPT
{
size_t __h = 0;
for (size_type __i = 0; __i < _N_words; ++__i)
__h ^= __first_[__i];
return __h;
}
template <size_t _Size>
class __bitset<1, _Size>
{
public:
typedef ptrdiff_t difference_type;
typedef size_t size_type;
typedef size_type __storage_type;
protected:
typedef __bitset __self;
typedef __storage_type* __storage_pointer;
typedef const __storage_type* __const_storage_pointer;
static const unsigned __bits_per_word = static_cast<unsigned>(sizeof(__storage_type) * CHAR_BIT);
friend class __bit_reference<__bitset>;
friend class __bit_const_reference<__bitset>;
friend class __bit_iterator<__bitset, false>;
friend class __bit_iterator<__bitset, true>;
friend struct __bit_array<__bitset>;
__storage_type __first_;
typedef __bit_reference<__bitset> reference;
typedef __bit_const_reference<__bitset> const_reference;
typedef __bit_iterator<__bitset, false> iterator;
typedef __bit_iterator<__bitset, true> const_iterator;
_LIBCPP_CONSTEXPR __bitset() _NOEXCEPT;
explicit _LIBCPP_CONSTEXPR __bitset(unsigned long long __v) _NOEXCEPT;
_LIBCPP_INLINE_VISIBILITY reference __make_ref(size_t __pos) _NOEXCEPT
{return reference(&__first_, __storage_type(1) << __pos);}
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR const_reference __make_ref(size_t __pos) const _NOEXCEPT
{return const_reference(&__first_, __storage_type(1) << __pos);}
_LIBCPP_INLINE_VISIBILITY iterator __make_iter(size_t __pos) _NOEXCEPT
{return iterator(&__first_ + __pos / __bits_per_word, __pos % __bits_per_word);}
_LIBCPP_INLINE_VISIBILITY const_iterator __make_iter(size_t __pos) const _NOEXCEPT
{return const_iterator(&__first_ + __pos / __bits_per_word, __pos % __bits_per_word);}
void operator&=(const __bitset& __v) _NOEXCEPT;
void operator|=(const __bitset& __v) _NOEXCEPT;
void operator^=(const __bitset& __v) _NOEXCEPT;
void flip() _NOEXCEPT;
unsigned long to_ulong() const;
unsigned long long to_ullong() const;
bool all() const _NOEXCEPT;
bool any() const _NOEXCEPT;
size_t __hash_code() const _NOEXCEPT;
};
template <size_t _Size>
inline _LIBCPP_INLINE_VISIBILITY
_LIBCPP_CONSTEXPR
__bitset<1, _Size>::__bitset() _NOEXCEPT
: __first_(0)
{
}
template <size_t _Size>
inline _LIBCPP_INLINE_VISIBILITY
_LIBCPP_CONSTEXPR
__bitset<1, _Size>::__bitset(unsigned long long __v) _NOEXCEPT
: __first_(static_cast<__storage_type>(__v))
{
}
template <size_t _Size>
inline _LIBCPP_INLINE_VISIBILITY
void
__bitset<1, _Size>::operator&=(const __bitset& __v) _NOEXCEPT
{
__first_ &= __v.__first_;
}
template <size_t _Size>
inline _LIBCPP_INLINE_VISIBILITY
void
__bitset<1, _Size>::operator|=(const __bitset& __v) _NOEXCEPT
{
__first_ |= __v.__first_;
}
template <size_t _Size>
inline _LIBCPP_INLINE_VISIBILITY
void
__bitset<1, _Size>::operator^=(const __bitset& __v) _NOEXCEPT
{
__first_ ^= __v.__first_;
}
template <size_t _Size>
inline _LIBCPP_INLINE_VISIBILITY
void
__bitset<1, _Size>::flip() _NOEXCEPT
{
__storage_type __m = ~__storage_type(0) >> (__bits_per_word - _Size);
__first_ = ~__first_;
__first_ &= __m;
}
template <size_t _Size>
inline _LIBCPP_INLINE_VISIBILITY
unsigned long
__bitset<1, _Size>::to_ulong() const
{
return __first_;
}
template <size_t _Size>
inline _LIBCPP_INLINE_VISIBILITY
unsigned long long
__bitset<1, _Size>::to_ullong() const
{
return __first_;
}
template <size_t _Size>
inline _LIBCPP_INLINE_VISIBILITY
bool
__bitset<1, _Size>::all() const _NOEXCEPT
{
__storage_type __m = ~__storage_type(0) >> (__bits_per_word - _Size);
return !(~__first_ & __m);
}
template <size_t _Size>
inline _LIBCPP_INLINE_VISIBILITY
bool
__bitset<1, _Size>::any() const _NOEXCEPT
{
__storage_type __m = ~__storage_type(0) >> (__bits_per_word - _Size);
return __first_ & __m;
}
template <size_t _Size>
inline _LIBCPP_INLINE_VISIBILITY
size_t
__bitset<1, _Size>::__hash_code() const _NOEXCEPT
{
return __first_;
}
template <>
class __bitset<0, 0>
{
public:
typedef ptrdiff_t difference_type;
typedef size_t size_type;
typedef size_type __storage_type;
protected:
typedef __bitset __self;
typedef __storage_type* __storage_pointer;
typedef const __storage_type* __const_storage_pointer;
static const unsigned __bits_per_word = static_cast<unsigned>(sizeof(__storage_type) * CHAR_BIT);
friend class __bit_reference<__bitset>;
friend class __bit_const_reference<__bitset>;
friend class __bit_iterator<__bitset, false>;
friend class __bit_iterator<__bitset, true>;
friend struct __bit_array<__bitset>;
typedef __bit_reference<__bitset> reference;
typedef __bit_const_reference<__bitset> const_reference;
typedef __bit_iterator<__bitset, false> iterator;
typedef __bit_iterator<__bitset, true> const_iterator;
_LIBCPP_CONSTEXPR __bitset() _NOEXCEPT;
explicit _LIBCPP_CONSTEXPR __bitset(unsigned long long) _NOEXCEPT;
_LIBCPP_INLINE_VISIBILITY reference __make_ref(size_t) _NOEXCEPT
{return reference(0, 1);}
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR const_reference __make_ref(size_t) const _NOEXCEPT
{return const_reference(0, 1);}
_LIBCPP_INLINE_VISIBILITY iterator __make_iter(size_t) _NOEXCEPT
{return iterator(0, 0);}
_LIBCPP_INLINE_VISIBILITY const_iterator __make_iter(size_t) const _NOEXCEPT
{return const_iterator(0, 0);}
_LIBCPP_INLINE_VISIBILITY void operator&=(const __bitset&) _NOEXCEPT {}
_LIBCPP_INLINE_VISIBILITY void operator|=(const __bitset&) _NOEXCEPT {}
_LIBCPP_INLINE_VISIBILITY void operator^=(const __bitset&) _NOEXCEPT {}
_LIBCPP_INLINE_VISIBILITY void flip() _NOEXCEPT {}
_LIBCPP_INLINE_VISIBILITY unsigned long to_ulong() const {return 0;}
_LIBCPP_INLINE_VISIBILITY unsigned long long to_ullong() const {return 0;}
_LIBCPP_INLINE_VISIBILITY bool all() const _NOEXCEPT {return true;}
_LIBCPP_INLINE_VISIBILITY bool any() const _NOEXCEPT {return false;}
_LIBCPP_INLINE_VISIBILITY size_t __hash_code() const _NOEXCEPT {return 0;}
};
inline _LIBCPP_INLINE_VISIBILITY
_LIBCPP_CONSTEXPR
__bitset<0, 0>::__bitset() _NOEXCEPT
{
}
inline _LIBCPP_INLINE_VISIBILITY
_LIBCPP_CONSTEXPR
__bitset<0, 0>::__bitset(unsigned long long) _NOEXCEPT
{
}
template <size_t _Size> class _LIBCPP_TYPE_VIS_ONLY bitset;
template <size_t _Size> struct _LIBCPP_TYPE_VIS_ONLY hash<bitset<_Size> >;
template <size_t _Size>
class _LIBCPP_TYPE_VIS_ONLY bitset
: private __bitset<_Size == 0 ? 0 : (_Size - 1) / (sizeof(size_t) * CHAR_BIT) + 1, _Size>
{
public:
static const unsigned __n_words = _Size == 0 ? 0 : (_Size - 1) / (sizeof(size_t) * CHAR_BIT) + 1;
typedef __bitset<__n_words, _Size> base;
public:
typedef typename base::reference reference;
typedef typename base::const_reference const_reference;
// 23.3.5.1 constructors:
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR bitset() _NOEXCEPT {}
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR
bitset(unsigned long long __v) _NOEXCEPT : base(__v) {}
template<class _CharT>
explicit bitset(const _CharT* __str,
typename basic_string<_CharT>::size_type __n = basic_string<_CharT>::npos,
_CharT __zero = _CharT('0'), _CharT __one = _CharT('1'));
template<class _CharT, class _Traits, class _Allocator>
explicit bitset(const basic_string<_CharT,_Traits,_Allocator>& __str,
typename basic_string<_CharT,_Traits,_Allocator>::size_type __pos = 0,
typename basic_string<_CharT,_Traits,_Allocator>::size_type __n =
(basic_string<_CharT,_Traits,_Allocator>::npos),
_CharT __zero = _CharT('0'), _CharT __one = _CharT('1'));
// 23.3.5.2 bitset operations:
bitset& operator&=(const bitset& __rhs) _NOEXCEPT;
bitset& operator|=(const bitset& __rhs) _NOEXCEPT;
bitset& operator^=(const bitset& __rhs) _NOEXCEPT;
bitset& operator<<=(size_t __pos) _NOEXCEPT;
bitset& operator>>=(size_t __pos) _NOEXCEPT;
bitset& set() _NOEXCEPT;
bitset& set(size_t __pos, bool __val = true);
bitset& reset() _NOEXCEPT;
bitset& reset(size_t __pos);
bitset operator~() const _NOEXCEPT;
bitset& flip() _NOEXCEPT;
bitset& flip(size_t __pos);
// element access:
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR
const_reference operator[](size_t __p) const {return base::__make_ref(__p);}
_LIBCPP_INLINE_VISIBILITY reference operator[](size_t __p) {return base::__make_ref(__p);}
unsigned long to_ulong() const;
unsigned long long to_ullong() const;
template <class _CharT, class _Traits, class _Allocator>
basic_string<_CharT, _Traits, _Allocator> to_string(_CharT __zero = _CharT('0'),
_CharT __one = _CharT('1')) const;
template <class _CharT, class _Traits>
basic_string<_CharT, _Traits, allocator<_CharT> > to_string(_CharT __zero = _CharT('0'),
_CharT __one = _CharT('1')) const;
template <class _CharT>
basic_string<_CharT, char_traits<_CharT>, allocator<_CharT> > to_string(_CharT __zero = _CharT('0'),
_CharT __one = _CharT('1')) const;
basic_string<char, char_traits<char>, allocator<char> > to_string(char __zero = '0',
char __one = '1') const;
size_t count() const _NOEXCEPT;
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR size_t size() const _NOEXCEPT {return _Size;}
bool operator==(const bitset& __rhs) const _NOEXCEPT;
bool operator!=(const bitset& __rhs) const _NOEXCEPT;
bool test(size_t __pos) const;
bool all() const _NOEXCEPT;
bool any() const _NOEXCEPT;
_LIBCPP_INLINE_VISIBILITY bool none() const _NOEXCEPT {return !any();}
bitset operator<<(size_t __pos) const _NOEXCEPT;
bitset operator>>(size_t __pos) const _NOEXCEPT;
private:
_LIBCPP_INLINE_VISIBILITY
size_t __hash_code() const _NOEXCEPT {return base::__hash_code();}
friend struct hash<bitset>;
};
template <size_t _Size>
template<class _CharT>
bitset<_Size>::bitset(const _CharT* __str,
typename basic_string<_CharT>::size_type __n,
_CharT __zero, _CharT __one)
{
size_t __rlen = _VSTD::min(__n, char_traits<_CharT>::length(__str));
for (size_t __i = 0; __i < __rlen; ++__i)
if (__str[__i] != __zero && __str[__i] != __one)
#ifndef _LIBCPP_NO_EXCEPTIONS
throw invalid_argument("bitset string ctor has invalid argument");
#else
assert(!"bitset string ctor has invalid argument");
#endif
size_t _Mp = _VSTD::min(__rlen, _Size);
size_t __i = 0;
for (; __i < _Mp; ++__i)
{
_CharT __c = __str[_Mp - 1 - __i];
if (__c == __zero)
(*this)[__i] = false;
else
(*this)[__i] = true;
}
_VSTD::fill(base::__make_iter(__i), base::__make_iter(_Size), false);
}
template <size_t _Size>
template<class _CharT, class _Traits, class _Allocator>
bitset<_Size>::bitset(const basic_string<_CharT,_Traits,_Allocator>& __str,
typename basic_string<_CharT,_Traits,_Allocator>::size_type __pos,
typename basic_string<_CharT,_Traits,_Allocator>::size_type __n,
_CharT __zero, _CharT __one)
{
if (__pos > __str.size())
#ifndef _LIBCPP_NO_EXCEPTIONS
throw out_of_range("bitset string pos out of range");
#else
assert(!"bitset string pos out of range");
#endif
size_t __rlen = _VSTD::min(__n, __str.size() - __pos);
for (size_t __i = __pos; __i < __pos + __rlen; ++__i)
if (!_Traits::eq(__str[__i], __zero) && !_Traits::eq(__str[__i], __one))
#ifndef _LIBCPP_NO_EXCEPTIONS
throw invalid_argument("bitset string ctor has invalid argument");
#else
assert(!"bitset string ctor has invalid argument");
#endif
size_t _Mp = _VSTD::min(__rlen, _Size);
size_t __i = 0;
for (; __i < _Mp; ++__i)
{
_CharT __c = __str[__pos + _Mp - 1 - __i];
if (_Traits::eq(__c, __zero))
(*this)[__i] = false;
else
(*this)[__i] = true;
}
_VSTD::fill(base::__make_iter(__i), base::__make_iter(_Size), false);
}
template <size_t _Size>
inline _LIBCPP_INLINE_VISIBILITY
bitset<_Size>&
bitset<_Size>::operator&=(const bitset& __rhs) _NOEXCEPT
{
base::operator&=(__rhs);
return *this;
}
template <size_t _Size>
inline _LIBCPP_INLINE_VISIBILITY
bitset<_Size>&
bitset<_Size>::operator|=(const bitset& __rhs) _NOEXCEPT
{
base::operator|=(__rhs);
return *this;
}
template <size_t _Size>
inline _LIBCPP_INLINE_VISIBILITY
bitset<_Size>&
bitset<_Size>::operator^=(const bitset& __rhs) _NOEXCEPT
{
base::operator^=(__rhs);
return *this;
}
template <size_t _Size>
bitset<_Size>&
bitset<_Size>::operator<<=(size_t __pos) _NOEXCEPT
{
__pos = _VSTD::min(__pos, _Size);
_VSTD::copy_backward(base::__make_iter(0), base::__make_iter(_Size - __pos), base::__make_iter(_Size));
_VSTD::fill_n(base::__make_iter(0), __pos, false);
return *this;
}
template <size_t _Size>
bitset<_Size>&
bitset<_Size>::operator>>=(size_t __pos) _NOEXCEPT
{
__pos = _VSTD::min(__pos, _Size);
_VSTD::copy(base::__make_iter(__pos), base::__make_iter(_Size), base::__make_iter(0));
_VSTD::fill_n(base::__make_iter(_Size - __pos), __pos, false);
return *this;
}
template <size_t _Size>
inline _LIBCPP_INLINE_VISIBILITY
bitset<_Size>&
bitset<_Size>::set() _NOEXCEPT
{
_VSTD::fill_n(base::__make_iter(0), _Size, true);
return *this;
}
template <size_t _Size>
bitset<_Size>&
bitset<_Size>::set(size_t __pos, bool __val)
{
if (__pos >= _Size)
#ifndef _LIBCPP_NO_EXCEPTIONS
throw out_of_range("bitset set argument out of range");
#else
assert(!"bitset set argument out of range");
#endif
(*this)[__pos] = __val;
return *this;
}
template <size_t _Size>
inline _LIBCPP_INLINE_VISIBILITY
bitset<_Size>&
bitset<_Size>::reset() _NOEXCEPT
{
_VSTD::fill_n(base::__make_iter(0), _Size, false);
return *this;
}
template <size_t _Size>
bitset<_Size>&
bitset<_Size>::reset(size_t __pos)
{
if (__pos >= _Size)
#ifndef _LIBCPP_NO_EXCEPTIONS
throw out_of_range("bitset reset argument out of range");
#else
assert(!"bitset reset argument out of range");
#endif
(*this)[__pos] = false;
return *this;
}
template <size_t _Size>
inline _LIBCPP_INLINE_VISIBILITY
bitset<_Size>
bitset<_Size>::operator~() const _NOEXCEPT
{
bitset __x(*this);
__x.flip();
return __x;
}
template <size_t _Size>
inline _LIBCPP_INLINE_VISIBILITY
bitset<_Size>&
bitset<_Size>::flip() _NOEXCEPT
{
base::flip();
return *this;
}
template <size_t _Size>
bitset<_Size>&
bitset<_Size>::flip(size_t __pos)
{
if (__pos >= _Size)
#ifndef _LIBCPP_NO_EXCEPTIONS
throw out_of_range("bitset flip argument out of range");
#else
assert(!"bitset flip argument out of range");
#endif
reference r = base::__make_ref(__pos);
r = ~r;
return *this;
}
template <size_t _Size>
inline _LIBCPP_INLINE_VISIBILITY
unsigned long
bitset<_Size>::to_ulong() const
{
return base::to_ulong();
}
template <size_t _Size>
inline _LIBCPP_INLINE_VISIBILITY
unsigned long long
bitset<_Size>::to_ullong() const
{
return base::to_ullong();
}
template <size_t _Size>
template <class _CharT, class _Traits, class _Allocator>
basic_string<_CharT, _Traits, _Allocator>
bitset<_Size>::to_string(_CharT __zero, _CharT __one) const
{
basic_string<_CharT, _Traits, _Allocator> __r(_Size, __zero);
for (size_t __i = 0; __i < _Size; ++__i)
{
if ((*this)[__i])
__r[_Size - 1 - __i] = __one;
}
return __r;
}
template <size_t _Size>
template <class _CharT, class _Traits>
inline _LIBCPP_INLINE_VISIBILITY
basic_string<_CharT, _Traits, allocator<_CharT> >
bitset<_Size>::to_string(_CharT __zero, _CharT __one) const
{
return to_string<_CharT, _Traits, allocator<_CharT> >(__zero, __one);
}
template <size_t _Size>
template <class _CharT>
inline _LIBCPP_INLINE_VISIBILITY
basic_string<_CharT, char_traits<_CharT>, allocator<_CharT> >
bitset<_Size>::to_string(_CharT __zero, _CharT __one) const
{
return to_string<_CharT, char_traits<_CharT>, allocator<_CharT> >(__zero, __one);
}
template <size_t _Size>
inline _LIBCPP_INLINE_VISIBILITY
basic_string<char, char_traits<char>, allocator<char> >
bitset<_Size>::to_string(char __zero, char __one) const
{
return to_string<char, char_traits<char>, allocator<char> >(__zero, __one);
}
template <size_t _Size>
inline _LIBCPP_INLINE_VISIBILITY
size_t
bitset<_Size>::count() const _NOEXCEPT
{
return static_cast<size_t>(_VSTD::count(base::__make_iter(0), base::__make_iter(_Size), true));
}
template <size_t _Size>
inline _LIBCPP_INLINE_VISIBILITY
bool
bitset<_Size>::operator==(const bitset& __rhs) const _NOEXCEPT
{
return _VSTD::equal(base::__make_iter(0), base::__make_iter(_Size), __rhs.__make_iter(0));
}
template <size_t _Size>
inline _LIBCPP_INLINE_VISIBILITY
bool
bitset<_Size>::operator!=(const bitset& __rhs) const _NOEXCEPT
{
return !(*this == __rhs);
}
template <size_t _Size>
bool
bitset<_Size>::test(size_t __pos) const
{
if (__pos >= _Size)
#ifndef _LIBCPP_NO_EXCEPTIONS
throw out_of_range("bitset test argument out of range");
#else
assert(!"bitset test argument out of range");
#endif
return (*this)[__pos];
}
template <size_t _Size>
inline _LIBCPP_INLINE_VISIBILITY
bool
bitset<_Size>::all() const _NOEXCEPT
{
return base::all();
}
template <size_t _Size>
inline _LIBCPP_INLINE_VISIBILITY
bool
bitset<_Size>::any() const _NOEXCEPT
{
return base::any();
}
template <size_t _Size>
inline _LIBCPP_INLINE_VISIBILITY
bitset<_Size>
bitset<_Size>::operator<<(size_t __pos) const _NOEXCEPT
{
bitset __r = *this;
__r <<= __pos;
return __r;
}
template <size_t _Size>
inline _LIBCPP_INLINE_VISIBILITY
bitset<_Size>
bitset<_Size>::operator>>(size_t __pos) const _NOEXCEPT
{
bitset __r = *this;
__r >>= __pos;
return __r;
}
template <size_t _Size>
inline _LIBCPP_INLINE_VISIBILITY
bitset<_Size>
operator&(const bitset<_Size>& __x, const bitset<_Size>& __y) _NOEXCEPT
{
bitset<_Size> __r = __x;
__r &= __y;
return __r;
}
template <size_t _Size>
inline _LIBCPP_INLINE_VISIBILITY
bitset<_Size>
operator|(const bitset<_Size>& __x, const bitset<_Size>& __y) _NOEXCEPT
{
bitset<_Size> __r = __x;
__r |= __y;
return __r;
}
template <size_t _Size>
inline _LIBCPP_INLINE_VISIBILITY
bitset<_Size>
operator^(const bitset<_Size>& __x, const bitset<_Size>& __y) _NOEXCEPT
{
bitset<_Size> __r = __x;
__r ^= __y;
return __r;
}
template <size_t _Size>
struct _LIBCPP_TYPE_VIS_ONLY hash<bitset<_Size> >
: public unary_function<bitset<_Size>, size_t>
{
_LIBCPP_INLINE_VISIBILITY
size_t operator()(const bitset<_Size>& __bs) const _NOEXCEPT
{return __bs.__hash_code();}
};
template <class _CharT, class _Traits, size_t _Size>
basic_istream<_CharT, _Traits>&
operator>>(basic_istream<_CharT, _Traits>& __is, bitset<_Size>& __x);
template <class _CharT, class _Traits, size_t _Size>
basic_ostream<_CharT, _Traits>&
operator<<(basic_ostream<_CharT, _Traits>& __os, const bitset<_Size>& __x);
_LIBCPP_END_NAMESPACE_STD
#endif // _LIBCPP_BITSET
Reference in New Issue View Git Blame Copy Permalink