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// -*- C++ -*-
//===-------------------------- iterator ----------------------------------===//
//
// 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_ITERATOR
#define _LIBCPP_ITERATOR
/*
iterator synopsis
namespace std
{
template<class Iterator>
struct iterator_traits
{
typedef typename Iterator::difference_type difference_type;
typedef typename Iterator::value_type value_type;
typedef typename Iterator::pointer pointer;
typedef typename Iterator::reference reference;
typedef typename Iterator::iterator_category iterator_category;
};
template<class T>
struct iterator_traits<T*>
{
typedef ptrdiff_t difference_type;
typedef T value_type;
typedef T* pointer;
typedef T& reference;
typedef random_access_iterator_tag iterator_category;
};
template<class T>
struct iterator_traits<const T*>
{
typedef ptrdiff_t difference_type;
typedef T value_type;
typedef const T* pointer;
typedef const T& reference;
typedef random_access_iterator_tag iterator_category;
};
template<class Category, class T, class Distance = ptrdiff_t,
class Pointer = T*, class Reference = T&>
struct iterator
{
typedef T value_type;
typedef Distance difference_type;
typedef Pointer pointer;
typedef Reference reference;
typedef Category iterator_category;
};
struct input_iterator_tag {};
struct output_iterator_tag {};
struct forward_iterator_tag : public input_iterator_tag {};
struct bidirectional_iterator_tag : public forward_iterator_tag {};
struct random_access_iterator_tag : public bidirectional_iterator_tag {};
// extension: second argument not conforming to C++03
template <class InputIterator>
void advance(InputIterator& i,
typename iterator_traits<InputIterator>::difference_type n);
template <class InputIterator>
typename iterator_traits<InputIterator>::difference_type
distance(InputIterator first, InputIterator last);
template <class Iterator>
class reverse_iterator
: public iterator<typename iterator_traits<Iterator>::iterator_category,
typename iterator_traits<Iterator>::value_type,
typename iterator_traits<Iterator>::difference_type,
typename iterator_traits<Iterator>::pointer,
typename iterator_traits<Iterator>::reference>
{
protected:
Iterator current;
public:
typedef Iterator iterator_type;
typedef typename iterator_traits<Iterator>::difference_type difference_type;
typedef typename iterator_traits<Iterator>::reference reference;
typedef typename iterator_traits<Iterator>::pointer pointer;
reverse_iterator();
explicit reverse_iterator(Iterator x);
template <class U> reverse_iterator(const reverse_iterator<U>& u);
Iterator base() const;
reference operator*() const;
pointer operator->() const;
reverse_iterator& operator++();
reverse_iterator operator++(int);
reverse_iterator& operator--();
reverse_iterator operator--(int);
reverse_iterator operator+ (difference_type n) const;
reverse_iterator& operator+=(difference_type n);
reverse_iterator operator- (difference_type n) const;
reverse_iterator& operator-=(difference_type n);
reference operator[](difference_type n) const;
};
template <class Iterator1, class Iterator2>
bool
operator==(const reverse_iterator<Iterator1>& x, const reverse_iterator<Iterator2>& y);
template <class Iterator1, class Iterator2>
bool
operator<(const reverse_iterator<Iterator1>& x, const reverse_iterator<Iterator2>& y);
template <class Iterator1, class Iterator2>
bool
operator!=(const reverse_iterator<Iterator1>& x, const reverse_iterator<Iterator2>& y);
template <class Iterator1, class Iterator2>
bool
operator>(const reverse_iterator<Iterator1>& x, const reverse_iterator<Iterator2>& y);
template <class Iterator1, class Iterator2>
bool
operator>=(const reverse_iterator<Iterator1>& x, const reverse_iterator<Iterator2>& y);
template <class Iterator1, class Iterator2>
bool
operator<=(const reverse_iterator<Iterator1>& x, const reverse_iterator<Iterator2>& y);
template <class Iterator1, class Iterator2>
typename reverse_iterator<Iterator1>::difference_type
operator-(const reverse_iterator<Iterator1>& x, const reverse_iterator<Iterator2>& y);
template <class Iterator>
reverse_iterator<Iterator>
operator+(typename reverse_iterator<Iterator>::difference_type n, const reverse_iterator<Iterator>& x);
template <class Container>
class back_insert_iterator
{
protected:
Container* container;
public:
typedef Container container_type;
typedef void value_type;
typedef void difference_type;
typedef back_insert_iterator<Cont>& reference;
typedef void pointer;
explicit back_insert_iterator(Container& x);
back_insert_iterator& operator=(const typename Container::value_type& value);
back_insert_iterator& operator*();
back_insert_iterator& operator++();
back_insert_iterator operator++(int);
};
template <class Container> back_insert_iterator<Container> back_inserter(Container& x);
template <class Container>
class front_insert_iterator
{
protected:
Container* container;
public:
typedef Container container_type;
typedef void value_type;
typedef void difference_type;
typedef front_insert_iterator<Cont>& reference;
typedef void pointer;
explicit front_insert_iterator(Container& x);
front_insert_iterator& operator=(const typename Container::value_type& value);
front_insert_iterator& operator*();
front_insert_iterator& operator++();
front_insert_iterator operator++(int);
};
template <class Container> front_insert_iterator<Container> front_inserter(Container& x);
template <class Container>
class insert_iterator
{
protected:
Container* container;
typename Container::iterator iter;
public:
typedef Container container_type;
typedef void value_type;
typedef void difference_type;
typedef insert_iterator<Cont>& reference;
typedef void pointer;
insert_iterator(Container& x, typename Container::iterator i);
insert_iterator& operator=(const typename Container::value_type& value);
insert_iterator& operator*();
insert_iterator& operator++();
insert_iterator& operator++(int);
};
template <class Container, class Iterator>
insert_iterator<Container> inserter(Container& x, Iterator i);
template <class T, class charT = char, class traits = char_traits<charT>, class Distance = ptrdiff_t>
class istream_iterator
: public iterator<input_iterator_tag, T, Distance, const T*, const T&>
{
public:
typedef charT char_type;
typedef traits traits_type;
typedef basic_istream<charT,traits> istream_type;
istream_iterator();
istream_iterator(istream_type& s);
istream_iterator(const istream_iterator& x);
~istream_iterator();
const T& operator*() const;
const T* operator->() const;
istream_iterator& operator++();
istream_iterator operator++(int);
};
template <class T, class charT, class traits, class Distance>
bool operator==(const istream_iterator<T,charT,traits,Distance>& x,
const istream_iterator<T,charT,traits,Distance>& y);
template <class T, class charT, class traits, class Distance>
bool operator!=(const istream_iterator<T,charT,traits,Distance>& x,
const istream_iterator<T,charT,traits,Distance>& y);
template <class T, class charT = char, class traits = char_traits<charT> >
class ostream_iterator
: public iterator<output_iterator_tag, void, void, void ,void>
{
public:
typedef charT char_type;
typedef traits traits_type;
typedef basic_ostream<charT,traits> ostream_type;
ostream_iterator(ostream_type& s);
ostream_iterator(ostream_type& s, const charT* delimiter);
ostream_iterator(const ostream_iterator& x);
~ostream_iterator();
ostream_iterator& operator=(const T& value);
ostream_iterator& operator*();
ostream_iterator& operator++();
ostream_iterator& operator++(int);
};
template<class charT, class traits = char_traits<charT> >
class istreambuf_iterator
: public iterator<input_iterator_tag, charT,
typename traits::off_type, unspecified,
charT>
{
public:
typedef charT char_type;
typedef traits traits_type;
typedef typename traits::int_type int_type;
typedef basic_streambuf<charT,traits> streambuf_type;
typedef basic_istream<charT,traits> istream_type;
istreambuf_iterator() throw();
istreambuf_iterator(istream_type& s) throw();
istreambuf_iterator(streambuf_type* s) throw();
istreambuf_iterator(a-private-type) throw();
charT operator*() const;
pointer operator->() const;
istreambuf_iterator& operator++();
a-private-type operator++(int);
bool equal(const istreambuf_iterator& b) const;
};
template <class charT, class traits>
bool operator==(const istreambuf_iterator<charT,traits>& a,
const istreambuf_iterator<charT,traits>& b);
template <class charT, class traits>
bool operator!=(const istreambuf_iterator<charT,traits>& a,
const istreambuf_iterator<charT,traits>& b);
template <class charT, class traits = char_traits<charT> >
class ostreambuf_iterator
: public iterator<output_iterator_tag, void, void, void, void>
{
public:
typedef charT char_type;
typedef traits traits_type;
typedef basic_streambuf<charT,traits> streambuf_type;
typedef basic_ostream<charT,traits> ostream_type;
ostreambuf_iterator(ostream_type& s) throw();
ostreambuf_iterator(streambuf_type* s) throw();
ostreambuf_iterator& operator=(charT c);
ostreambuf_iterator& operator*();
ostreambuf_iterator& operator++();
ostreambuf_iterator& operator++(int);
bool failed() const throw();
};
template <class C> auto begin(C& c) -> decltype(c.begin());
template <class C> auto begin(const C& c) -> decltype(c.begin());
template <class C> auto end(C& c) -> decltype(c.end());
template <class C> auto end(const C& c) -> decltype(c.end());
template <class T, size_t N> T* begin(T (&array)[N]);
template <class T, size_t N> T* end(T (&array)[N]);
} // std
*/
#include <__config>
#include <type_traits>
#include <cstddef>
#include <iosfwd>
#ifdef _LIBCPP_DEBUG
#include <cassert>
#endif
#pragma GCC system_header
_LIBCPP_BEGIN_NAMESPACE_STD
struct _LIBCPP_VISIBLE input_iterator_tag {};
struct _LIBCPP_VISIBLE output_iterator_tag {};
struct _LIBCPP_VISIBLE forward_iterator_tag : public input_iterator_tag {};
struct _LIBCPP_VISIBLE bidirectional_iterator_tag : public forward_iterator_tag {};
struct _LIBCPP_VISIBLE random_access_iterator_tag : public bidirectional_iterator_tag {};
template <class _Tp>
struct __has_iterator_category
{
private:
struct __two {char _; char __;};
template <class _Up> static __two __test(...);
template <class _Up> static char __test(typename _Up::iterator_category* = 0);
public:
static const bool value = sizeof(__test<_Tp>(0)) == 1;
};
template <class _Iter, bool> struct ____iterator_traits {};
template <class _Iter>
struct ____iterator_traits<_Iter, true>
{
typedef typename _Iter::difference_type difference_type;
typedef typename _Iter::value_type value_type;
typedef typename _Iter::pointer pointer;
typedef typename _Iter::reference reference;
typedef typename _Iter::iterator_category iterator_category;
};
template <class _Iter, bool> struct __iterator_traits {};
template <class _Iter>
struct __iterator_traits<_Iter, true>
: ____iterator_traits
<
_Iter,
is_convertible<typename _Iter::iterator_category, input_iterator_tag>::value ||
is_convertible<typename _Iter::iterator_category, output_iterator_tag>::value
>
{};
// iterator_traits<Iterator> will only have the nested types if Iterator::iterator_category
// exists. Else iterator_traits<Iterator> will be an empty class. This is a
// conforming extension which allows some programs to compile and behave as
// the client expects instead of failing at compile time.
template <class _Iter>
struct _LIBCPP_VISIBLE iterator_traits
: __iterator_traits<_Iter, __has_iterator_category<_Iter>::value> {};
template<class _Tp>
struct _LIBCPP_VISIBLE iterator_traits<_Tp*>
{
typedef ptrdiff_t difference_type;
typedef typename remove_const<_Tp>::type value_type;
typedef _Tp* pointer;
typedef _Tp& reference;
typedef random_access_iterator_tag iterator_category;
};
template <class _Tp, class _Up, bool = __has_iterator_category<iterator_traits<_Tp> >::value>
struct __has_iterator_category_convertible_to
: public integral_constant<bool, is_convertible<typename iterator_traits<_Tp>::iterator_category, _Up>::value>
{};
template <class _Tp, class _Up>
struct __has_iterator_category_convertible_to<_Tp, _Up, false> : public false_type {};
template <class _Tp>
struct __is_input_iterator : public __has_iterator_category_convertible_to<_Tp, input_iterator_tag> {};
template <class _Tp>
struct __is_forward_iterator : public __has_iterator_category_convertible_to<_Tp, forward_iterator_tag> {};
template <class _Tp>
struct __is_bidirectional_iterator : public __has_iterator_category_convertible_to<_Tp, bidirectional_iterator_tag> {};
template <class _Tp>
struct __is_random_access_iterator : public __has_iterator_category_convertible_to<_Tp, random_access_iterator_tag> {};
template<class _Category, class _Tp, class _Distance = ptrdiff_t,
class _Pointer = _Tp*, class _Reference = _Tp&>
struct _LIBCPP_VISIBLE iterator
{
typedef _Tp value_type;
typedef _Distance difference_type;
typedef _Pointer pointer;
typedef _Reference reference;
typedef _Category iterator_category;
};
template <class _InputIter>
inline _LIBCPP_INLINE_VISIBILITY
void __advance(_InputIter& __i,
typename iterator_traits<_InputIter>::difference_type __n, input_iterator_tag)
{
for (; __n > 0; --__n)
++__i;
}
template <class _BiDirIter>
inline _LIBCPP_INLINE_VISIBILITY
void __advance(_BiDirIter& __i,
typename iterator_traits<_BiDirIter>::difference_type __n, bidirectional_iterator_tag)
{
if (__n >= 0)
for (; __n > 0; --__n)
++__i;
else
for (; __n < 0; ++__n)
--__i;
}
template <class _RandIter>
inline _LIBCPP_INLINE_VISIBILITY
void __advance(_RandIter& __i,
typename iterator_traits<_RandIter>::difference_type __n, random_access_iterator_tag)
{
__i += __n;
}
template <class _InputIter>
inline _LIBCPP_INLINE_VISIBILITY
void advance(_InputIter& __i,
typename iterator_traits<_InputIter>::difference_type __n)
{
__advance(__i, __n, typename iterator_traits<_InputIter>::iterator_category());
}
template <class _InputIter>
inline _LIBCPP_INLINE_VISIBILITY
typename iterator_traits<_InputIter>::difference_type
__distance(_InputIter __first, _InputIter __last, input_iterator_tag)
{
typename iterator_traits<_InputIter>::difference_type __r(0);
for (; __first != __last; ++__first)
++__r;
return __r;
}
template <class _RandIter>
inline _LIBCPP_INLINE_VISIBILITY
typename iterator_traits<_RandIter>::difference_type
__distance(_RandIter __first, _RandIter __last, random_access_iterator_tag)
{
return __last - __first;
}
template <class _InputIter>
inline _LIBCPP_INLINE_VISIBILITY
typename iterator_traits<_InputIter>::difference_type
distance(_InputIter __first, _InputIter __last)
{
return __distance(__first, __last, typename iterator_traits<_InputIter>::iterator_category());
}
template <class _ForwardIter>
inline _LIBCPP_INLINE_VISIBILITY
_ForwardIter
next(_ForwardIter __x,
typename iterator_traits<_ForwardIter>::difference_type __n = 1,
typename enable_if<__is_forward_iterator<_ForwardIter>::value>::type* = 0)
{
_VSTD::advance(__x, __n);
return __x;
}
template <class _BidiretionalIter>
inline _LIBCPP_INLINE_VISIBILITY
_BidiretionalIter
prev(_BidiretionalIter __x,
typename iterator_traits<_BidiretionalIter>::difference_type __n = 1,
typename enable_if<__is_bidirectional_iterator<_BidiretionalIter>::value>::type* = 0)
{
_VSTD::advance(__x, -__n);
return __x;
}
template <class _Iter>
class _LIBCPP_VISIBLE reverse_iterator
: public iterator<typename iterator_traits<_Iter>::iterator_category,
typename iterator_traits<_Iter>::value_type,
typename iterator_traits<_Iter>::difference_type,
typename iterator_traits<_Iter>::pointer,
typename iterator_traits<_Iter>::reference>
{
private:
mutable _Iter __t;
protected:
_Iter current;
public:
typedef _Iter iterator_type;
typedef typename iterator_traits<_Iter>::difference_type difference_type;
typedef typename iterator_traits<_Iter>::reference reference;
typedef typename iterator_traits<_Iter>::pointer pointer;
_LIBCPP_INLINE_VISIBILITY reverse_iterator() : current() {}
_LIBCPP_INLINE_VISIBILITY explicit reverse_iterator(_Iter __x) : __t(__x), current(__x) {}
template <class _Up> _LIBCPP_INLINE_VISIBILITY reverse_iterator(const reverse_iterator<_Up>& __u)
: __t(__u.base()), current(__u.base()) {}
_LIBCPP_INLINE_VISIBILITY _Iter base() const {return current;}
_LIBCPP_INLINE_VISIBILITY reference operator*() const {__t = current; return *--__t;}
_LIBCPP_INLINE_VISIBILITY pointer operator->() const {return &(operator*());}
_LIBCPP_INLINE_VISIBILITY reverse_iterator& operator++() {--current; return *this;}
_LIBCPP_INLINE_VISIBILITY reverse_iterator operator++(int)
{reverse_iterator __tmp(*this); --current; return __tmp;}
_LIBCPP_INLINE_VISIBILITY reverse_iterator& operator--() {++current; return *this;}
_LIBCPP_INLINE_VISIBILITY reverse_iterator operator--(int)
{reverse_iterator __tmp(*this); ++current; return __tmp;}
_LIBCPP_INLINE_VISIBILITY reverse_iterator operator+ (difference_type __n) const
{return reverse_iterator(current - __n);}
_LIBCPP_INLINE_VISIBILITY reverse_iterator& operator+=(difference_type __n)
{current -= __n; return *this;}
_LIBCPP_INLINE_VISIBILITY reverse_iterator operator- (difference_type __n) const
{return reverse_iterator(current + __n);}
_LIBCPP_INLINE_VISIBILITY reverse_iterator& operator-=(difference_type __n)
{current += __n; return *this;}
_LIBCPP_INLINE_VISIBILITY reference operator[](difference_type __n) const
{return current[-__n-1];}
};
template <class _Iter1, class _Iter2>
inline _LIBCPP_INLINE_VISIBILITY
bool
operator==(const reverse_iterator<_Iter1>& __x, const reverse_iterator<_Iter2>& __y)
{
return __x.base() == __y.base();
}
template <class _Iter1, class _Iter2>
inline _LIBCPP_INLINE_VISIBILITY
bool
operator<(const reverse_iterator<_Iter1>& __x, const reverse_iterator<_Iter2>& __y)
{
return __x.base() > __y.base();
}
template <class _Iter1, class _Iter2>
inline _LIBCPP_INLINE_VISIBILITY
bool
operator!=(const reverse_iterator<_Iter1>& __x, const reverse_iterator<_Iter2>& __y)
{
return __x.base() != __y.base();
}
template <class _Iter1, class _Iter2>
inline _LIBCPP_INLINE_VISIBILITY
bool
operator>(const reverse_iterator<_Iter1>& __x, const reverse_iterator<_Iter2>& __y)
{
return __x.base() < __y.base();
}
template <class _Iter1, class _Iter2>
inline _LIBCPP_INLINE_VISIBILITY
bool
operator>=(const reverse_iterator<_Iter1>& __x, const reverse_iterator<_Iter2>& __y)
{
return __x.base() <= __y.base();
}
template <class _Iter1, class _Iter2>
inline _LIBCPP_INLINE_VISIBILITY
bool
operator<=(const reverse_iterator<_Iter1>& __x, const reverse_iterator<_Iter2>& __y)
{
return __x.base() >= __y.base();
}
template <class _Iter1, class _Iter2>
inline _LIBCPP_INLINE_VISIBILITY
typename reverse_iterator<_Iter1>::difference_type
operator-(const reverse_iterator<_Iter1>& __x, const reverse_iterator<_Iter2>& __y)
{
return __y.base() - __x.base();
}
template <class _Iter>
inline _LIBCPP_INLINE_VISIBILITY
reverse_iterator<_Iter>
operator+(typename reverse_iterator<_Iter>::difference_type __n, const reverse_iterator<_Iter>& __x)
{
return reverse_iterator<_Iter>(__x.base() - __n);
}
template <class _Container>
class _LIBCPP_VISIBLE back_insert_iterator
: public iterator<output_iterator_tag,
void,
void,
void,
back_insert_iterator<_Container>&>
{
protected:
_Container* container;
public:
typedef _Container container_type;
_LIBCPP_INLINE_VISIBILITY explicit back_insert_iterator(_Container& __x) : container(&__x) {}
_LIBCPP_INLINE_VISIBILITY back_insert_iterator& operator=(const typename _Container::value_type& __value)
{container->push_back(__value); return *this;}
#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
_LIBCPP_INLINE_VISIBILITY back_insert_iterator& operator=(typename _Container::value_type&& __value)
{container->push_back(_VSTD::move(__value)); return *this;}
#endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES
_LIBCPP_INLINE_VISIBILITY back_insert_iterator& operator*() {return *this;}
_LIBCPP_INLINE_VISIBILITY back_insert_iterator& operator++() {return *this;}
_LIBCPP_INLINE_VISIBILITY back_insert_iterator operator++(int) {return *this;}
};
template <class _Container>
inline _LIBCPP_INLINE_VISIBILITY
back_insert_iterator<_Container>
back_inserter(_Container& __x)
{
return back_insert_iterator<_Container>(__x);
}
template <class _Container>
class _LIBCPP_VISIBLE front_insert_iterator
: public iterator<output_iterator_tag,
void,
void,
void,
front_insert_iterator<_Container>&>
{
protected:
_Container* container;
public:
typedef _Container container_type;
_LIBCPP_INLINE_VISIBILITY explicit front_insert_iterator(_Container& __x) : container(&__x) {}
_LIBCPP_INLINE_VISIBILITY front_insert_iterator& operator=(const typename _Container::value_type& __value)
{container->push_front(__value); return *this;}
#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
_LIBCPP_INLINE_VISIBILITY front_insert_iterator& operator=(typename _Container::value_type&& __value)
{container->push_front(_VSTD::move(__value)); return *this;}
#endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES
_LIBCPP_INLINE_VISIBILITY front_insert_iterator& operator*() {return *this;}
_LIBCPP_INLINE_VISIBILITY front_insert_iterator& operator++() {return *this;}
_LIBCPP_INLINE_VISIBILITY front_insert_iterator operator++(int) {return *this;}
};
template <class _Container>
inline _LIBCPP_INLINE_VISIBILITY
front_insert_iterator<_Container>
front_inserter(_Container& __x)
{
return front_insert_iterator<_Container>(__x);
}
template <class _Container>
class _LIBCPP_VISIBLE insert_iterator
: public iterator<output_iterator_tag,
void,
void,
void,
insert_iterator<_Container>&>
{
protected:
_Container* container;
typename _Container::iterator iter;
public:
typedef _Container container_type;
_LIBCPP_INLINE_VISIBILITY insert_iterator(_Container& __x, typename _Container::iterator __i)
: container(&__x), iter(__i) {}
_LIBCPP_INLINE_VISIBILITY insert_iterator& operator=(const typename _Container::value_type& __value)
{iter = container->insert(iter, __value); ++iter; return *this;}
#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
_LIBCPP_INLINE_VISIBILITY insert_iterator& operator=(typename _Container::value_type&& __value)
{iter = container->insert(iter, _VSTD::move(__value)); ++iter; return *this;}
#endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES
_LIBCPP_INLINE_VISIBILITY insert_iterator& operator*() {return *this;}
_LIBCPP_INLINE_VISIBILITY insert_iterator& operator++() {return *this;}
_LIBCPP_INLINE_VISIBILITY insert_iterator& operator++(int) {return *this;}
};
template <class _Container>
inline _LIBCPP_INLINE_VISIBILITY
insert_iterator<_Container>
inserter(_Container& __x, typename _Container::iterator __i)
{
return insert_iterator<_Container>(__x, __i);
}
template <class _Tp, class _CharT = char,
class _Traits = char_traits<_CharT>, class _Distance = ptrdiff_t>
class _LIBCPP_VISIBLE istream_iterator
: public iterator<input_iterator_tag, _Tp, _Distance, const _Tp*, const _Tp&>
{
public:
typedef _CharT char_type;
typedef _Traits traits_type;
typedef basic_istream<_CharT,_Traits> istream_type;
private:
istream_type* __in_stream_;
_Tp __value_;
public:
_LIBCPP_INLINE_VISIBILITY istream_iterator() : __in_stream_(0) {}
_LIBCPP_INLINE_VISIBILITY istream_iterator(istream_type& __s) : __in_stream_(&__s)
{
if (!(*__in_stream_ >> __value_))
__in_stream_ = 0;
}
_LIBCPP_INLINE_VISIBILITY const _Tp& operator*() const {return __value_;}
_LIBCPP_INLINE_VISIBILITY const _Tp* operator->() const {return &(operator*());}
_LIBCPP_INLINE_VISIBILITY istream_iterator& operator++()
{
if (!(*__in_stream_ >> __value_))
__in_stream_ = 0;
return *this;
}
_LIBCPP_INLINE_VISIBILITY istream_iterator operator++(int)
{istream_iterator __t(*this); ++(*this); return __t;}
friend _LIBCPP_INLINE_VISIBILITY
bool operator==(const istream_iterator& __x, const istream_iterator& __y)
{return __x.__in_stream_ == __y.__in_stream_;}
friend _LIBCPP_INLINE_VISIBILITY
bool operator!=(const istream_iterator& __x, const istream_iterator& __y)
{return !(__x == __y);}
};
template <class _Tp, class _CharT = char, class _Traits = char_traits<_CharT> >
class _LIBCPP_VISIBLE ostream_iterator
: public iterator<output_iterator_tag, void, void, void, void>
{
public:
typedef _CharT char_type;
typedef _Traits traits_type;
typedef basic_ostream<_CharT,_Traits> ostream_type;
private:
ostream_type* __out_stream_;
const char_type* __delim_;
public:
_LIBCPP_INLINE_VISIBILITY ostream_iterator(ostream_type& __s)
: __out_stream_(&__s), __delim_(0) {}
_LIBCPP_INLINE_VISIBILITY ostream_iterator(ostream_type& __s, const _CharT* __delimiter)
: __out_stream_(&__s), __delim_(__delimiter) {}
_LIBCPP_INLINE_VISIBILITY ostream_iterator& operator=(const _Tp& __value)
{
*__out_stream_ << __value;
if (__delim_)
*__out_stream_ << __delim_;
return *this;
}
_LIBCPP_INLINE_VISIBILITY ostream_iterator& operator*() {return *this;}
_LIBCPP_INLINE_VISIBILITY ostream_iterator& operator++() {return *this;}
_LIBCPP_INLINE_VISIBILITY ostream_iterator& operator++(int) {return *this;}
};
template<class _CharT, class _Traits>
class _LIBCPP_VISIBLE istreambuf_iterator
: public iterator<input_iterator_tag, _CharT,
typename _Traits::off_type, _CharT*,
_CharT>
{
public:
typedef _CharT char_type;
typedef _Traits traits_type;
typedef typename _Traits::int_type int_type;
typedef basic_streambuf<_CharT,_Traits> streambuf_type;
typedef basic_istream<_CharT,_Traits> istream_type;
private:
streambuf_type* __sbuf_;
class __proxy
{
char_type __keep_;
streambuf_type* __sbuf_;
_LIBCPP_INLINE_VISIBILITY __proxy(char_type __c, streambuf_type* __s)
: __keep_(__c), __sbuf_(__s) {}
friend class istreambuf_iterator;
public:
_LIBCPP_INLINE_VISIBILITY char_type operator*() const {return __keep_;}
};
_LIBCPP_INLINE_VISIBILITY
void __test_for_eof()
{
if (__sbuf_ && traits_type::eq_int_type(__sbuf_->sgetc(), traits_type::eof()))
__sbuf_ = 0;
}
public:
_LIBCPP_INLINE_VISIBILITY istreambuf_iterator() throw() : __sbuf_(0) {}
_LIBCPP_INLINE_VISIBILITY istreambuf_iterator(istream_type& __s) throw()
: __sbuf_(__s.rdbuf()) {__test_for_eof();}
_LIBCPP_INLINE_VISIBILITY istreambuf_iterator(streambuf_type* __s) throw()
: __sbuf_(__s) {__test_for_eof();}
_LIBCPP_INLINE_VISIBILITY istreambuf_iterator(const __proxy& __p) throw()
: __sbuf_(__p.__sbuf_) {}
_LIBCPP_INLINE_VISIBILITY _CharT operator*() const {return __sbuf_->sgetc();}
_LIBCPP_INLINE_VISIBILITY char_type* operator->() const {return nullptr;}
_LIBCPP_INLINE_VISIBILITY istreambuf_iterator& operator++()
{
if (traits_type::eq_int_type(__sbuf_->snextc(), traits_type::eof()))
__sbuf_ = 0;
return *this;
}
_LIBCPP_INLINE_VISIBILITY __proxy operator++(int)
{
char_type __c = __sbuf_->sgetc();
++(*this);
return __proxy(__c, __sbuf_);
}
_LIBCPP_INLINE_VISIBILITY bool equal(const istreambuf_iterator& __b) const
{return (__sbuf_ == 0) == (__b.__sbuf_ == 0);}
};
template <class _CharT, class _Traits>
inline _LIBCPP_INLINE_VISIBILITY
bool operator==(const istreambuf_iterator<_CharT,_Traits>& __a,
const istreambuf_iterator<_CharT,_Traits>& __b)
{return __a.equal(__b);}
template <class _CharT, class _Traits>
inline _LIBCPP_INLINE_VISIBILITY
bool operator!=(const istreambuf_iterator<_CharT,_Traits>& __a,
const istreambuf_iterator<_CharT,_Traits>& __b)
{return !__a.equal(__b);}
template <class _CharT, class _Traits>
class _LIBCPP_VISIBLE ostreambuf_iterator
: public iterator<output_iterator_tag, void, void, void, void>
{
public:
typedef _CharT char_type;
typedef _Traits traits_type;
typedef basic_streambuf<_CharT,_Traits> streambuf_type;
typedef basic_ostream<_CharT,_Traits> ostream_type;
private:
streambuf_type* __sbuf_;
public:
_LIBCPP_INLINE_VISIBILITY ostreambuf_iterator(ostream_type& __s) throw()
: __sbuf_(__s.rdbuf()) {}
_LIBCPP_INLINE_VISIBILITY ostreambuf_iterator(streambuf_type* __s) throw()
: __sbuf_(__s) {}
_LIBCPP_INLINE_VISIBILITY ostreambuf_iterator& operator=(_CharT __c)
{
if (__sbuf_ && traits_type::eq_int_type(__sbuf_->sputc(__c), traits_type::eof()))
__sbuf_ = 0;
return *this;
}
_LIBCPP_INLINE_VISIBILITY ostreambuf_iterator& operator*() {return *this;}
_LIBCPP_INLINE_VISIBILITY ostreambuf_iterator& operator++() {return *this;}
_LIBCPP_INLINE_VISIBILITY ostreambuf_iterator& operator++(int) {return *this;}
_LIBCPP_INLINE_VISIBILITY bool failed() const throw() {return __sbuf_ == 0;}
};
template <class _Iter>
class _LIBCPP_VISIBLE move_iterator
{
private:
_Iter __i;
public:
typedef _Iter iterator_type;
typedef typename iterator_traits<iterator_type>::iterator_category iterator_category;
typedef typename iterator_traits<iterator_type>::value_type value_type;
typedef typename iterator_traits<iterator_type>::difference_type difference_type;
typedef typename iterator_traits<iterator_type>::pointer pointer;
#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
typedef value_type&& reference;
#else
typedef typename iterator_traits<iterator_type>::reference reference;
#endif
_LIBCPP_INLINE_VISIBILITY move_iterator() : __i() {}
_LIBCPP_INLINE_VISIBILITY explicit move_iterator(_Iter __x) : __i(__x) {}
template <class _Up> _LIBCPP_INLINE_VISIBILITY move_iterator(const move_iterator<_Up>& __u)
: __i(__u.base()) {}
_LIBCPP_INLINE_VISIBILITY _Iter base() const {return __i;}
_LIBCPP_INLINE_VISIBILITY reference operator*() const {
return static_cast<reference>(*__i);
}
_LIBCPP_INLINE_VISIBILITY pointer operator->() const {
typename iterator_traits<iterator_type>::reference __ref = *__i;
return &__ref;
}
_LIBCPP_INLINE_VISIBILITY move_iterator& operator++() {++__i; return *this;}
_LIBCPP_INLINE_VISIBILITY move_iterator operator++(int)
{move_iterator __tmp(*this); ++__i; return __tmp;}
_LIBCPP_INLINE_VISIBILITY move_iterator& operator--() {--__i; return *this;}
_LIBCPP_INLINE_VISIBILITY move_iterator operator--(int)
{move_iterator __tmp(*this); --__i; return __tmp;}
_LIBCPP_INLINE_VISIBILITY move_iterator operator+ (difference_type __n) const
{return move_iterator(__i + __n);}
_LIBCPP_INLINE_VISIBILITY move_iterator& operator+=(difference_type __n)
{__i += __n; return *this;}
_LIBCPP_INLINE_VISIBILITY move_iterator operator- (difference_type __n) const
{return move_iterator(__i - __n);}
_LIBCPP_INLINE_VISIBILITY move_iterator& operator-=(difference_type __n)
{__i -= __n; return *this;}
_LIBCPP_INLINE_VISIBILITY reference operator[](difference_type __n) const
{
return static_cast<reference>(__i[__n]);
}
};
template <class _Iter1, class _Iter2>
inline _LIBCPP_INLINE_VISIBILITY
bool
operator==(const move_iterator<_Iter1>& __x, const move_iterator<_Iter2>& __y)
{
return __x.base() == __y.base();
}
template <class _Iter1, class _Iter2>
inline _LIBCPP_INLINE_VISIBILITY
bool
operator<(const move_iterator<_Iter1>& __x, const move_iterator<_Iter2>& __y)
{
return __x.base() < __y.base();
}
template <class _Iter1, class _Iter2>
inline _LIBCPP_INLINE_VISIBILITY
bool
operator!=(const move_iterator<_Iter1>& __x, const move_iterator<_Iter2>& __y)
{
return __x.base() != __y.base();
}
template <class _Iter1, class _Iter2>
inline _LIBCPP_INLINE_VISIBILITY
bool
operator>(const move_iterator<_Iter1>& __x, const move_iterator<_Iter2>& __y)
{
return __x.base() > __y.base();
}
template <class _Iter1, class _Iter2>
inline _LIBCPP_INLINE_VISIBILITY
bool
operator>=(const move_iterator<_Iter1>& __x, const move_iterator<_Iter2>& __y)
{
return __x.base() >= __y.base();
}
template <class _Iter1, class _Iter2>
inline _LIBCPP_INLINE_VISIBILITY
bool
operator<=(const move_iterator<_Iter1>& __x, const move_iterator<_Iter2>& __y)
{
return __x.base() <= __y.base();
}
template <class _Iter1, class _Iter2>
inline _LIBCPP_INLINE_VISIBILITY
typename move_iterator<_Iter1>::difference_type
operator-(const move_iterator<_Iter1>& __x, const move_iterator<_Iter2>& __y)
{
return __x.base() - __y.base();
}
template <class _Iter>
inline _LIBCPP_INLINE_VISIBILITY
move_iterator<_Iter>
operator+(typename move_iterator<_Iter>::difference_type __n, const move_iterator<_Iter>& __x)
{
return move_iterator<_Iter>(__x.base() + __n);
}
template <class _Iter>
inline _LIBCPP_INLINE_VISIBILITY
move_iterator<_Iter>
make_move_iterator(const _Iter& __i)
{
return move_iterator<_Iter>(__i);
}
// __wrap_iter
template <class _Iter> class __wrap_iter;
template <class _Iter1, class _Iter2>
bool
operator==(const __wrap_iter<_Iter1>&, const __wrap_iter<_Iter2>&) _NOEXCEPT;
template <class _Iter1, class _Iter2>
bool
operator<(const __wrap_iter<_Iter1>&, const __wrap_iter<_Iter2>&) _NOEXCEPT;
template <class _Iter1, class _Iter2>
bool
operator!=(const __wrap_iter<_Iter1>&, const __wrap_iter<_Iter2>&) _NOEXCEPT;
template <class _Iter1, class _Iter2>
bool
operator>(const __wrap_iter<_Iter1>&, const __wrap_iter<_Iter2>&) _NOEXCEPT;
template <class _Iter1, class _Iter2>
bool
operator>=(const __wrap_iter<_Iter1>&, const __wrap_iter<_Iter2>&) _NOEXCEPT;
template <class _Iter1, class _Iter2>
bool
operator<=(const __wrap_iter<_Iter1>&, const __wrap_iter<_Iter2>&) _NOEXCEPT;
template <class _Iter1, class _Iter2>
typename __wrap_iter<_Iter1>::difference_type
operator-(const __wrap_iter<_Iter1>&, const __wrap_iter<_Iter2>&) _NOEXCEPT;
template <class _Iter>
__wrap_iter<_Iter>
operator+(typename __wrap_iter<_Iter>::difference_type, const __wrap_iter<_Iter>&) _NOEXCEPT;
template <class _I, class _O> _O copy(_I, _I, _O);
template <class _B1, class _B2> _B2 copy_backward(_B1, _B1, _B2);
template <class _I, class _O> _O move(_I, _I, _O);
template <class _B1, class _B2> _B2 move_backward(_B1, _B1, _B2);
template <class _Tp>
typename enable_if
<
is_trivially_copy_assignable<_Tp>::value,
_Tp*
>::type
__unwrap_iter(__wrap_iter<_Tp*>);
template <class _Iter>
class __wrap_iter
{
public:
typedef _Iter iterator_type;
typedef typename iterator_traits<iterator_type>::iterator_category iterator_category;
typedef typename iterator_traits<iterator_type>::value_type value_type;
typedef typename iterator_traits<iterator_type>::difference_type difference_type;
typedef typename iterator_traits<iterator_type>::pointer pointer;
typedef typename iterator_traits<iterator_type>::reference reference;
private:
iterator_type __i;
public:
_LIBCPP_INLINE_VISIBILITY __wrap_iter() _NOEXCEPT
{
#if _LIBCPP_DEBUG_LEVEL >= 2
__get_db()->__insert_i(this);
#endif
}
template <class _Up> _LIBCPP_INLINE_VISIBILITY __wrap_iter(const __wrap_iter<_Up>& __u,
typename enable_if<is_convertible<_Up, iterator_type>::value>::type* = 0) _NOEXCEPT
: __i(__u.base())
{
#if _LIBCPP_DEBUG_LEVEL >= 2
__get_db()->__iterator_copy(this, &__u);
#endif
}
#if _LIBCPP_DEBUG_LEVEL >= 2
_LIBCPP_INLINE_VISIBILITY
__wrap_iter(const __wrap_iter& __x)
: __i(__x.base())
{
__get_db()->__iterator_copy(this, &__x);
}
_LIBCPP_INLINE_VISIBILITY
__wrap_iter& operator=(const __wrap_iter& __x)
{
if (this != &__x)
{
__get_db()->__iterator_copy(this, &__x);
__i = __x.__i;
}
return *this;
}
_LIBCPP_INLINE_VISIBILITY
~__wrap_iter()
{
__get_db()->__erase_i(this);
}
#endif
_LIBCPP_INLINE_VISIBILITY reference operator*() const _NOEXCEPT
{
#if _LIBCPP_DEBUG_LEVEL >= 2
_LIBCPP_ASSERT(__get_const_db()->__dereferenceable(this),
"Attempted to dereference a non-dereferenceable iterator");
#endif
return *__i;
}
_LIBCPP_INLINE_VISIBILITY pointer operator->() const _NOEXCEPT {return &(operator*());}
_LIBCPP_INLINE_VISIBILITY __wrap_iter& operator++() _NOEXCEPT
{
#if _LIBCPP_DEBUG_LEVEL >= 2
_LIBCPP_ASSERT(__get_const_db()->__dereferenceable(this),
"Attempted to increment non-incrementable iterator");
#endif
++__i;
return *this;
}
_LIBCPP_INLINE_VISIBILITY __wrap_iter operator++(int) _NOEXCEPT
{__wrap_iter __tmp(*this); ++(*this); return __tmp;}
_LIBCPP_INLINE_VISIBILITY __wrap_iter& operator--() _NOEXCEPT
{
#if _LIBCPP_DEBUG_LEVEL >= 2
_LIBCPP_ASSERT(__get_const_db()->__decrementable(this),
"Attempted to decrement non-decrementable iterator");
#endif
--__i;
return *this;
}
_LIBCPP_INLINE_VISIBILITY __wrap_iter operator--(int) _NOEXCEPT
{__wrap_iter __tmp(*this); --(*this); return __tmp;}
_LIBCPP_INLINE_VISIBILITY __wrap_iter operator+ (difference_type __n) const _NOEXCEPT
{__wrap_iter __w(*this); __w += __n; return __w;}
_LIBCPP_INLINE_VISIBILITY __wrap_iter& operator+=(difference_type __n) _NOEXCEPT
{
#if _LIBCPP_DEBUG_LEVEL >= 2
_LIBCPP_ASSERT(__get_const_db()->__addable(this, __n),
"Attempted to add/subtract iterator outside of valid range");
#endif
__i += __n;
return *this;
}
_LIBCPP_INLINE_VISIBILITY __wrap_iter operator- (difference_type __n) const _NOEXCEPT
{return *this + (-__n);}
_LIBCPP_INLINE_VISIBILITY __wrap_iter& operator-=(difference_type __n) _NOEXCEPT
{*this += -__n; return *this;}
_LIBCPP_INLINE_VISIBILITY reference operator[](difference_type __n) const _NOEXCEPT
{
#if _LIBCPP_DEBUG_LEVEL >= 2
_LIBCPP_ASSERT(__get_const_db()->__subscriptable(this, __n),
"Attempted to subscript iterator outside of valid range");
#endif
return __i[__n];
}
_LIBCPP_INLINE_VISIBILITY iterator_type base() const _NOEXCEPT {return __i;}
private:
_LIBCPP_INLINE_VISIBILITY __wrap_iter(iterator_type __x) _NOEXCEPT : __i(__x) {}
#if _LIBCPP_DEBUG_LEVEL >= 2
_LIBCPP_INLINE_VISIBILITY __wrap_iter(const void* __p, iterator_type __x) : __i(__x)
{
__get_db()->__insert_ic(this, __p);
}
#endif
template <class _Up> friend class __wrap_iter;
template <class _CharT, class _Traits, class _Alloc> friend class basic_string;
template <class _Tp, class _Alloc> friend class vector;
template <class _Iter1, class _Iter2>
friend
bool
operator==(const __wrap_iter<_Iter1>&, const __wrap_iter<_Iter2>&) _NOEXCEPT;
template <class _Iter1, class _Iter2>
friend
bool
operator<(const __wrap_iter<_Iter1>&, const __wrap_iter<_Iter2>&) _NOEXCEPT;
template <class _Iter1, class _Iter2>
friend
bool
operator!=(const __wrap_iter<_Iter1>&, const __wrap_iter<_Iter2>&) _NOEXCEPT;
template <class _Iter1, class _Iter2>
friend
bool
operator>(const __wrap_iter<_Iter1>&, const __wrap_iter<_Iter2>&) _NOEXCEPT;
template <class _Iter1, class _Iter2>
friend
bool
operator>=(const __wrap_iter<_Iter1>&, const __wrap_iter<_Iter2>&) _NOEXCEPT;
template <class _Iter1, class _Iter2>
friend
bool
operator<=(const __wrap_iter<_Iter1>&, const __wrap_iter<_Iter2>&) _NOEXCEPT;
template <class _Iter1, class _Iter2>
friend
typename __wrap_iter<_Iter1>::difference_type
operator-(const __wrap_iter<_Iter1>&, const __wrap_iter<_Iter2>&) _NOEXCEPT;
template <class _Iter1>
friend
__wrap_iter<_Iter1>
operator+(typename __wrap_iter<_Iter1>::difference_type, const __wrap_iter<_Iter1>&) _NOEXCEPT;
template <class _I, class _O> friend _O copy(_I, _I, _O);
template <class _B1, class _B2> friend _B2 copy_backward(_B1, _B1, _B2);
template <class _I, class _O> friend _O move(_I, _I, _O);
template <class _B1, class _B2> friend _B2 move_backward(_B1, _B1, _B2);
template <class _Tp>
friend
typename enable_if
<
is_trivially_copy_assignable<_Tp>::value,
_Tp*
>::type
__unwrap_iter(__wrap_iter<_Tp*>);
};
template <class _Iter1, class _Iter2>
inline _LIBCPP_INLINE_VISIBILITY
bool
operator==(const __wrap_iter<_Iter1>& __x, const __wrap_iter<_Iter2>& __y) _NOEXCEPT
{
#if _LIBCPP_DEBUG_LEVEL >= 2
_LIBCPP_ASSERT(__get_const_db()->__comparable(&__x, &__y),
"Attempted to compare incomparable iterators");
#endif
return __x.base() == __y.base();
}
template <class _Iter1, class _Iter2>
inline _LIBCPP_INLINE_VISIBILITY
bool
operator<(const __wrap_iter<_Iter1>& __x, const __wrap_iter<_Iter2>& __y) _NOEXCEPT
{
#if _LIBCPP_DEBUG_LEVEL >= 2
_LIBCPP_ASSERT(__get_const_db()->__comparable(&__x, &__y),
"Attempted to compare incomparable iterators");
#endif
return __x.base() < __y.base();
}
template <class _Iter1, class _Iter2>
inline _LIBCPP_INLINE_VISIBILITY
bool
operator!=(const __wrap_iter<_Iter1>& __x, const __wrap_iter<_Iter2>& __y) _NOEXCEPT
{
return !(__x == __y);
}
template <class _Iter1, class _Iter2>
inline _LIBCPP_INLINE_VISIBILITY
bool
operator>(const __wrap_iter<_Iter1>& __x, const __wrap_iter<_Iter2>& __y) _NOEXCEPT
{
return __y < __x;
}
template <class _Iter1, class _Iter2>
inline _LIBCPP_INLINE_VISIBILITY
bool
operator>=(const __wrap_iter<_Iter1>& __x, const __wrap_iter<_Iter2>& __y) _NOEXCEPT
{
return !(__x < __y);
}
template <class _Iter1, class _Iter2>
inline _LIBCPP_INLINE_VISIBILITY
bool
operator<=(const __wrap_iter<_Iter1>& __x, const __wrap_iter<_Iter2>& __y) _NOEXCEPT
{
return !(__y < __x);
}
template <class _Iter1, class _Iter2>
inline _LIBCPP_INLINE_VISIBILITY
typename __wrap_iter<_Iter1>::difference_type
operator-(const __wrap_iter<_Iter1>& __x, const __wrap_iter<_Iter2>& __y) _NOEXCEPT
{
#if _LIBCPP_DEBUG_LEVEL >= 2
_LIBCPP_ASSERT(__get_const_db()->__comparable(&__x, &__y),
"Attempted to subtract incompatible iterators");
#endif
return __x.base() - __y.base();
}
template <class _Iter>
inline _LIBCPP_INLINE_VISIBILITY
__wrap_iter<_Iter>
operator+(typename __wrap_iter<_Iter>::difference_type __n,
__wrap_iter<_Iter> __x) _NOEXCEPT
{
__x += __n;
return __x;
}
#ifdef _LIBCPP_DEBUG
// __debug_iter
template <class _Container, class _Iter> class __debug_iter;
template <class _Container, class _Iter1, class _Iter2>
bool
operator==(const __debug_iter<_Container, _Iter1>&, const __debug_iter<_Container, _Iter2>&);
template <class _Container, class _Iter1, class _Iter2>
bool
operator<(const __debug_iter<_Container, _Iter1>&, const __debug_iter<_Container, _Iter2>&);
template <class _Container, class _Iter1, class _Iter2>
bool
operator!=(const __debug_iter<_Container, _Iter1>&, const __debug_iter<_Container, _Iter2>&);
template <class _Container, class _Iter1, class _Iter2>
bool
operator>(const __debug_iter<_Container, _Iter1>&, const __debug_iter<_Container, _Iter2>&);
template <class _Container, class _Iter1, class _Iter2>
bool
operator>=(const __debug_iter<_Container, _Iter1>&, const __debug_iter<_Container, _Iter2>&);
template <class _Container, class _Iter1, class _Iter2>
bool
operator<=(const __debug_iter<_Container, _Iter1>&, const __debug_iter<_Container, _Iter2>&);
template <class _Container, class _Iter1, class _Iter2>
typename __debug_iter<_Container, _Iter1>::difference_type
operator-(const __debug_iter<_Container, _Iter1>&, const __debug_iter<_Container, _Iter2>&);
template <class _Container, class _Iter>
__debug_iter<_Container, _Iter>
operator+(typename __debug_iter<_Container, _Iter>::difference_type, const __debug_iter<_Container, _Iter>&);
template <class _Container, class _Iter>
class __debug_iter
{
public:
typedef _Iter iterator_type;
typedef _Container __container_type;
typedef typename iterator_traits<iterator_type>::iterator_category iterator_category;
typedef typename iterator_traits<iterator_type>::value_type value_type;
typedef typename iterator_traits<iterator_type>::difference_type difference_type;
typedef typename iterator_traits<iterator_type>::pointer pointer;
typedef typename iterator_traits<iterator_type>::reference reference;
private:
iterator_type __i;
__debug_iter* __next;
__container_type* __cont;
public:
_LIBCPP_INLINE_VISIBILITY __debug_iter() : __next(0), __cont(0) {}
_LIBCPP_INLINE_VISIBILITY __debug_iter(const __debug_iter& __x)
: __i(__x.base()), __next(0), __cont(0) {__set_owner(__x.__cont);}
__debug_iter& operator=(const __debug_iter& __x);
template <class _Up> _LIBCPP_INLINE_VISIBILITY __debug_iter(const __debug_iter<_Container, _Up>& __u,
typename enable_if<is_convertible<_Up, iterator_type>::value>::type* = 0)
: __i(__u.base()), __next(0), __cont(0) {__set_owner(__u.__cont);}
_LIBCPP_INLINE_VISIBILITY ~__debug_iter() {__remove_owner();}
_LIBCPP_INLINE_VISIBILITY reference operator*() const {assert(__is_deref()); return *__i;}
_LIBCPP_INLINE_VISIBILITY pointer operator->() const {return &(operator*());}
_LIBCPP_INLINE_VISIBILITY __debug_iter& operator++() {assert(__can_increment()); ++__i; return *this;}
_LIBCPP_INLINE_VISIBILITY __debug_iter operator++(int)
{__debug_iter __tmp(*this); operator++(); return __tmp;}
_LIBCPP_INLINE_VISIBILITY __debug_iter& operator--() {assert(__can_decrement()); --__i; return *this;}
_LIBCPP_INLINE_VISIBILITY __debug_iter operator--(int)
{__debug_iter __tmp(*this); operator--(); return __tmp;}
_LIBCPP_INLINE_VISIBILITY __debug_iter operator+ (difference_type __n) const
{__debug_iter __t(*this); __t += __n; return __t;}
__debug_iter& operator+=(difference_type __n);
_LIBCPP_INLINE_VISIBILITY __debug_iter operator- (difference_type __n) const
{__debug_iter __t(*this); __t -= __n; return __t;}
_LIBCPP_INLINE_VISIBILITY __debug_iter& operator-=(difference_type __n)
{*this += -__n; return *this;}
_LIBCPP_INLINE_VISIBILITY reference operator[](difference_type __n) const
{return *(*this + __n);}
private:
_LIBCPP_INLINE_VISIBILITY __debug_iter(const __container_type* __c, iterator_type __x)
: __i(__x), __next(0), __cont(0) {__set_owner(__c);}
_LIBCPP_INLINE_VISIBILITY iterator_type base() const {return __i;}
void __set_owner(const __container_type* __c);
void __remove_owner();
static void __remove_all(__container_type* __c);
static void swap(__container_type* __x, __container_type* __y);
_LIBCPP_INLINE_VISIBILITY bool __is_deref() const
{return __is_deref(__is_random_access_iterator<iterator_type>());}
bool __is_deref(false_type) const;
bool __is_deref(true_type) const;
_LIBCPP_INLINE_VISIBILITY bool __can_decrement() const
{return __can_decrement(integral_constant<int, is_pointer<iterator_type>::value ? 2:
__is_random_access_iterator<iterator_type>::value ? 1 : 0>());}
bool __can_decrement(integral_constant<int, 0>) const;
bool __can_decrement(integral_constant<int, 1>) const;
bool __can_decrement(integral_constant<int, 2>) const;
_LIBCPP_INLINE_VISIBILITY bool __can_increment() const
{return __can_increment(integral_constant<int, is_pointer<iterator_type>::value ? 2:
__is_random_access_iterator<iterator_type>::value ? 1 : 0>());}
bool __can_increment(integral_constant<int, 0>) const;
bool __can_increment(integral_constant<int, 1>) const;
bool __can_increment(integral_constant<int, 2>) const;
_LIBCPP_INLINE_VISIBILITY bool __can_add(difference_type __n) const
{return __can_add(__n, is_pointer<iterator_type>());}
bool __can_add(difference_type __n, false_type) const;
bool __can_add(difference_type __n, true_type) const;
template <class _Cp, class _Up> friend class __debug_iter;
friend class _Container::__self;
template <class _Cp, class _Iter1, class _Iter2>
friend
bool
operator==(const __debug_iter<_Cp, _Iter1>&, const __debug_iter<_Cp, _Iter2>&);
template <class _Cp, class _Iter1, class _Iter2>
friend
bool
operator<(const __debug_iter<_Cp, _Iter1>&, const __debug_iter<_Cp, _Iter2>&);
template <class _Cp, class _Iter1, class _Iter2>
friend
bool
operator!=(const __debug_iter<_Cp, _Iter1>&, const __debug_iter<_Cp, _Iter2>&);
template <class _Cp, class _Iter1, class _Iter2>
friend
bool
operator>(const __debug_iter<_Cp, _Iter1>&, const __debug_iter<_Cp, _Iter2>&);
template <class _Cp, class _Iter1, class _Iter2>
friend
bool
operator>=(const __debug_iter<_Cp, _Iter1>&, const __debug_iter<_Cp, _Iter2>&);
template <class _Cp, class _Iter1, class _Iter2>
friend
bool
operator<=(const __debug_iter<_Cp, _Iter1>&, const __debug_iter<_Cp, _Iter2>&);
template <class _Cp, class _Iter1, class _Iter2>
friend
typename __debug_iter<_Cp, _Iter1>::difference_type
operator-(const __debug_iter<_Cp, _Iter1>&, const __debug_iter<_Cp, _Iter2>&);
template <class _Cp, class _Iter1>
friend
__debug_iter<_Cp, _Iter1>
operator+(typename __debug_iter<_Cp, _Iter1>::difference_type, const __debug_iter<_Cp, _Iter1>&);
};
template <class _Container, class _Iter>
__debug_iter<_Container, _Iter>&
__debug_iter<_Container, _Iter>::operator=(const __debug_iter& __x)
{
if (this != &__x)
{
__remove_owner();
__i = __x.__i;
__set_owner(__x.__cont);
}
return *this;
}
template <class _Container, class _Iter>
void
__debug_iter<_Container, _Iter>::__set_owner(const __container_type* __c)
{
__cont = const_cast<__container_type*>(__c);
__debug_iter*& __head = __cont->__get_iterator_list(this);
__next = __head;
__head = this;
}
template <class _Container, class _Iter>
void
__debug_iter<_Container, _Iter>::__remove_owner()
{
if (__cont)
{
__debug_iter*& __head = __cont->__get_iterator_list(this);
if (__head == this)
__head = __next;
else
{
__debug_iter* __prev = __head;
for (__debug_iter* __p = __head->__next; __p != this; __p = __p->__next)
__prev = __p;
__prev->__next = __next;
}
__cont = 0;
}
}
template <class _Container, class _Iter>
void
__debug_iter<_Container, _Iter>::__remove_all(__container_type* __c)
{
__debug_iter*& __head = __c->__get_iterator_list((__debug_iter*)0);
__debug_iter* __p = __head;
__head = 0;
while (__p)
{
__p->__cont = 0;
__debug_iter* __n = __p->__next;
__p->__next = 0;
__p = __n;
}
}
template <class _Container, class _Iter>
void
__debug_iter<_Container, _Iter>::swap(__container_type* __x, __container_type* __y)
{
__debug_iter*& __head_x = __x->__get_iterator_list((__debug_iter*)0);
__debug_iter*& __head_y = __y->__get_iterator_list((__debug_iter*)0);
__debug_iter* __p = __head_x;
__head_x = __head_y;
__head_y = __p;
for (__p = __head_x; __p; __p = __p->__next)
__p->__cont = __x;
for (__p = __head_y; __p; __p = __p->__next)
__p->__cont = __y;
}
template <class _Container, class _Iter>
bool
__debug_iter<_Container, _Iter>::__is_deref(false_type) const
{
if (__cont == 0)
return false;
return __i != __cont->end().base();
}
template <class _Container, class _Iter>
bool
__debug_iter<_Container, _Iter>::__is_deref(true_type) const
{
if (__cont == 0)
return false;
return __i < __cont->end().base();
}
template <class _Container, class _Iter>
bool
__debug_iter<_Container, _Iter>::__can_decrement(integral_constant<int, 0>) const
{
if (__cont == 0)
return false;
return __i != __cont->begin().base();
}
template <class _Container, class _Iter>
bool
__debug_iter<_Container, _Iter>::__can_decrement(integral_constant<int, 1>) const
{
if (__cont == 0)
return false;
iterator_type __b = __cont->begin().base();
return __b < __i && __i <= __b + __cont->size();
}
template <class _Container, class _Iter>
bool
__debug_iter<_Container, _Iter>::__can_decrement(integral_constant<int, 2>) const
{
if (__cont == 0)
return false;
iterator_type __b = __cont->begin().base();
return __b < __i && __i <= __b + __cont->size();
}
template <class _Container, class _Iter>
bool
__debug_iter<_Container, _Iter>::__can_increment(integral_constant<int, 0>) const
{
if (__cont == 0)
return false;
return __i != __cont->end().base();
}
template <class _Container, class _Iter>
bool
__debug_iter<_Container, _Iter>::__can_increment(integral_constant<int, 1>) const
{
if (__cont == 0)
return false;
iterator_type __b = __cont->begin().base();
return __b <= __i && __i < __b + __cont->size();
}
template <class _Container, class _Iter>
bool
__debug_iter<_Container, _Iter>::__can_increment(integral_constant<int, 2>) const
{
if (__cont == 0)
return false;
iterator_type __b = __cont->begin().base();
return __b <= __i && __i < __b + __cont->size();
}
template <class _Container, class _Iter>
bool
__debug_iter<_Container, _Iter>::__can_add(difference_type __n, false_type) const
{
if (__cont == 0)
return false;
iterator_type __b = __cont->begin().base();
iterator_type __j = __i + __n;
return __b <= __j && __j <= __b + __cont->size();
}
template <class _Container, class _Iter>
bool
__debug_iter<_Container, _Iter>::__can_add(difference_type __n, true_type) const
{
if (__cont == 0)
return false;
iterator_type __b = __cont->begin().base();
iterator_type __j = __i + __n;
return __b <= __j && __j <= __b + __cont->size();
}
template <class _Container, class _Iter>
__debug_iter<_Container, _Iter>&
__debug_iter<_Container, _Iter>::operator+=(difference_type __n)
{
assert(__can_add(__n));
__i += __n;
return *this;
}
template <class _Container, class _Iter1, class _Iter2>
inline _LIBCPP_INLINE_VISIBILITY
bool
operator==(const __debug_iter<_Container, _Iter1>& __x, const __debug_iter<_Container, _Iter2>& __y)
{
assert(__x.__cont && __x.__cont == __y.__cont);
return __x.base() == __y.base();
}
template <class _Container, class _Iter1, class _Iter2>
inline _LIBCPP_INLINE_VISIBILITY
bool
operator!=(const __debug_iter<_Container, _Iter1>& __x, const __debug_iter<_Container, _Iter2>& __y)
{
return !(__x == __y);
}
template <class _Container, class _Iter1, class _Iter2>
inline _LIBCPP_INLINE_VISIBILITY
bool
operator<(const __debug_iter<_Container, _Iter1>& __x, const __debug_iter<_Container, _Iter2>& __y)
{
assert(__x.__cont && __x.__cont == __y.__cont);
return __x.base() < __y.base();
}
template <class _Container, class _Iter1, class _Iter2>
inline _LIBCPP_INLINE_VISIBILITY
bool
operator>(const __debug_iter<_Container, _Iter1>& __x, const __debug_iter<_Container, _Iter2>& __y)
{
return __y < __x;
}
template <class _Container, class _Iter1, class _Iter2>
inline _LIBCPP_INLINE_VISIBILITY
bool
operator>=(const __debug_iter<_Container, _Iter1>& __x, const __debug_iter<_Container, _Iter2>& __y)
{
return !(__x < __y);
}
template <class _Container, class _Iter1, class _Iter2>
inline _LIBCPP_INLINE_VISIBILITY
bool
operator<=(const __debug_iter<_Container, _Iter1>& __x, const __debug_iter<_Container, _Iter2>& __y)
{
return !(__y < __x);
}
template <class _Container, class _Iter1, class _Iter2>
inline _LIBCPP_INLINE_VISIBILITY
typename __debug_iter<_Container, _Iter1>::difference_type
operator-(const __debug_iter<_Container, _Iter1>& __x, const __debug_iter<_Container, _Iter2>& __y)
{
assert(__x.__cont && __x.__cont == __y.__cont);
return __x.base() - __y.base();
}
template <class _Container, class _Iter>
inline _LIBCPP_INLINE_VISIBILITY
__debug_iter<_Container, _Iter>
operator+(typename __debug_iter<_Container, _Iter>::difference_type __n,
const __debug_iter<_Container, _Iter>& __x)
{
return __x + __n;
}
#endif // _LIBCPP_DEBUG
#if !defined(_LIBCPP_HAS_NO_RVALUE_REFERENCES) && !defined(_LIBCPP_HAS_NO_TRAILING_RETURN)
template <class _C>
inline _LIBCPP_INLINE_VISIBILITY
auto
begin(_C& __c) -> decltype(__c.begin())
{
return __c.begin();
}
template <class _C>
inline _LIBCPP_INLINE_VISIBILITY
auto
begin(const _C& __c) -> decltype(__c.begin())
{
return __c.begin();
}
template <class _C>
inline _LIBCPP_INLINE_VISIBILITY
auto
end(_C& __c) -> decltype(__c.end())
{
return __c.end();
}
template <class _C>
inline _LIBCPP_INLINE_VISIBILITY
auto
end(const _C& __c) -> decltype(__c.end())
{
return __c.end();
}
#else // !defined(_LIBCPP_HAS_NO_RVALUE_REFERENCES) && !defined(_LIBCPP_HAS_NO_TRAILING_RETURN)
template <class _C>
inline _LIBCPP_INLINE_VISIBILITY
typename _C::iterator
begin(_C& __c)
{
return __c.begin();
}
template <class _C>
inline _LIBCPP_INLINE_VISIBILITY
typename _C::const_iterator
begin(const _C& __c)
{
return __c.begin();
}
template <class _C>
inline _LIBCPP_INLINE_VISIBILITY
typename _C::iterator
end(_C& __c)
{
return __c.end();
}
template <class _C>
inline _LIBCPP_INLINE_VISIBILITY
typename _C::const_iterator
end(const _C& __c)
{
return __c.end();
}
#endif // !defined(_LIBCPP_HAS_NO_RVALUE_REFERENCES) && !defined(_LIBCPP_HAS_NO_TRAILING_RETURN)
template <class _T, size_t _N>
inline _LIBCPP_INLINE_VISIBILITY
_T*
begin(_T (&__array)[_N])
{
return __array;
}
template <class _T, size_t _N>
inline _LIBCPP_INLINE_VISIBILITY
_T*
end(_T (&__array)[_N])
{
return __array + _N;
}
_LIBCPP_END_NAMESPACE_STD
#endif // _LIBCPP_ITERATOR
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