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libcxx initial import

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git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@103490 91177308-0d34-0410-b5e6-96231b3b80d8
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Howard Hinnant
2010-05-11 19:42:16 +00:00
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// -*- C++ -*-
//===---------------------------- array -----------------------------------===//
//
// <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#ifndef _LIBCPP_ARRAY
#define _LIBCPP_ARRAY
/*
array synopsis
namespace std
{
template <class T, size_t N >
struct array
{
// types:
typedef T & reference;
typedef const T & const_reference;
typedef implementation defined iterator;
typedef implementation defined const_iterator;
typedef size_t size_type;
typedef ptrdiff_t difference_type;
typedef T value_type;
typedef T* pointer;
typedef const T* const_pointer;
typedef std::reverse_iterator<iterator> reverse_iterator;
typedef std::reverse_iterator<const_iterator> const_reverse_iterator;
// No explicit construct/copy/destroy for aggregate type
void fill(const T& u);
void swap(array& a);
// iterators:
iterator begin();
const_iterator begin() const;
iterator end();
const_iterator end() const;
reverse_iterator rbegin();
const_reverse_iterator rbegin() const;
reverse_iterator rend();
const_reverse_iterator rend() const;
const_iterator cbegin() const;
const_iterator cend() const;
const_reverse_iterator crbegin() const;
const_reverse_iterator crend() const;
// capacity:
constexpr size_type size() const;
constexpr size_type max_size() const;
bool empty() const;
// element access:
reference operator[](size_type n);
const_reference operator[](size_type n) const;
const_reference at(size_type n) const;
reference at(size_type n);
reference front();
const_reference front() const;
reference back();
const_reference back() const;
T* data();
const T* data() const;
};
template <class T, size_t N>
bool operator==(const array<T,N>& x, const array<T,N>& y);
template <class T, size_t N>
bool operator!=(const array<T,N>& x, const array<T,N>& y);
template <class T, size_t N>
bool operator<(const array<T,N>& x, const array<T,N>& y);
template <class T, size_t N>
bool operator>(const array<T,N>& x, const array<T,N>& y);
template <class T, size_t N>
bool operator<=(const array<T,N>& x, const array<T,N>& y);
template <class T, size_t N>
bool operator>=(const array<T,N>& x, const array<T,N>& y);
template <class T, size_t N >
void swap(array<T,N>& x, array<T,N>& y);
template <class T> class tuple_size;
template <int I, class T> class tuple_element;
template <class T, size_t N> struct tuple_size<array<T, N>>;
template <int I, class T, size_t N> struct tuple_element<I, array<T, N>>;
template <int I, class T, size_t N> T& get(array<T, N>&);
template <int I, class T, size_t N> const T& get(const array<T, N>&);
} // std
*/
#include <__config>
#include <__tuple>
#include <type_traits>
#include <utility>
#include <iterator>
#include <algorithm>
#include <stdexcept>
#if defined(_LIBCPP_NO_EXCEPTIONS)
#include <cassert>
#endif
#pragma GCC system_header
_LIBCPP_BEGIN_NAMESPACE_STD
template <class _Tp, size_t _Size>
struct array
{
// types:
typedef array __self;
typedef _Tp value_type;
typedef value_type& reference;
typedef const value_type& const_reference;
typedef value_type* iterator;
typedef const value_type* const_iterator;
typedef value_type* pointer;
typedef const value_type* const_pointer;
typedef size_t size_type;
typedef ptrdiff_t difference_type;
typedef std::reverse_iterator<iterator> reverse_iterator;
typedef std::reverse_iterator<const_iterator> const_reverse_iterator;
value_type __elems_[_Size > 0 ? _Size : 1];
// No explicit construct/copy/destroy for aggregate type
_LIBCPP_INLINE_VISIBILITY void fill(const value_type& __u) {_STD::fill_n(__elems_, _Size, __u);}
_LIBCPP_INLINE_VISIBILITY void swap(array& __a) {_STD::swap_ranges(__elems_, __elems_ + _Size, __a.__elems_);}
// iterators:
_LIBCPP_INLINE_VISIBILITY iterator begin() {return iterator(__elems_);}
_LIBCPP_INLINE_VISIBILITY const_iterator begin() const {return const_iterator(__elems_);}
_LIBCPP_INLINE_VISIBILITY iterator end() {return iterator(__elems_ + _Size);}
_LIBCPP_INLINE_VISIBILITY const_iterator end() const {return const_iterator(__elems_ + _Size);}
_LIBCPP_INLINE_VISIBILITY reverse_iterator rbegin() {return reverse_iterator(end());}
_LIBCPP_INLINE_VISIBILITY const_reverse_iterator rbegin() const {return const_reverse_iterator(end());}
_LIBCPP_INLINE_VISIBILITY reverse_iterator rend() {return reverse_iterator(begin());}
_LIBCPP_INLINE_VISIBILITY const_reverse_iterator rend() const {return const_reverse_iterator(begin());}
_LIBCPP_INLINE_VISIBILITY const_iterator cbegin() const {return begin();}
_LIBCPP_INLINE_VISIBILITY const_iterator cend() const {return end();}
_LIBCPP_INLINE_VISIBILITY const_reverse_iterator crbegin() const {return rbegin();}
_LIBCPP_INLINE_VISIBILITY const_reverse_iterator crend() const {return rend();}
// capacity:
_LIBCPP_INLINE_VISIBILITY /*constexpr*/ size_type size() const {return _Size;}
_LIBCPP_INLINE_VISIBILITY /*constexpr*/ size_type max_size() const {return _Size;}
_LIBCPP_INLINE_VISIBILITY bool empty() const {return _Size == 0;}
// element access:
_LIBCPP_INLINE_VISIBILITY reference operator[](size_type __n) {return __elems_[__n];}
_LIBCPP_INLINE_VISIBILITY const_reference operator[](size_type __n) const {return __elems_[__n];}
reference at(size_type __n);
const_reference at(size_type __n) const;
_LIBCPP_INLINE_VISIBILITY reference front() {return __elems_[0];}
_LIBCPP_INLINE_VISIBILITY const_reference front() const {return __elems_[0];}
_LIBCPP_INLINE_VISIBILITY reference back() {return __elems_[_Size > 0 ? _Size-1 : 0];}
_LIBCPP_INLINE_VISIBILITY const_reference back() const {return __elems_[_Size > 0 ? _Size-1 : 0];}
_LIBCPP_INLINE_VISIBILITY value_type* data() {return __elems_;}
_LIBCPP_INLINE_VISIBILITY const value_type* data() const {return __elems_;}
};
template <class _Tp, size_t _Size>
typename array<_Tp, _Size>::reference
array<_Tp, _Size>::at(size_type __n)
{
if (__n >= _Size)
#ifndef _LIBCPP_NO_EXCEPTIONS
throw out_of_range("array::at");
#else
assert(!"array::at out_of_range");
#endif
return __elems_[__n];
}
template <class _Tp, size_t _Size>
typename array<_Tp, _Size>::const_reference
array<_Tp, _Size>::at(size_type __n) const
{
if (__n >= _Size)
#ifndef _LIBCPP_NO_EXCEPTIONS
throw out_of_range("array::at");
#else
assert(!"array::at out_of_range");
#endif
return __elems_[__n];
}
template <class _Tp, size_t _Size>
_LIBCPP_INLINE_VISIBILITY inline
bool
operator==(const array<_Tp, _Size>& __x, const array<_Tp, _Size>& __y)
{
return _STD::equal(__x.__elems_, __x.__elems_ + _Size, __y.__elems_);
}
template <class _Tp, size_t _Size>
_LIBCPP_INLINE_VISIBILITY inline
bool
operator!=(const array<_Tp, _Size>& __x, const array<_Tp, _Size>& __y)
{
return !(__x == __y);
}
template <class _Tp, size_t _Size>
_LIBCPP_INLINE_VISIBILITY inline
bool
operator<(const array<_Tp, _Size>& __x, const array<_Tp, _Size>& __y)
{
return _STD::lexicographical_compare(__x.__elems_, __x.__elems_ + _Size, __y.__elems_, __y.__elems_ + _Size);
}
template <class _Tp, size_t _Size>
_LIBCPP_INLINE_VISIBILITY inline
bool
operator>(const array<_Tp, _Size>& __x, const array<_Tp, _Size>& __y)
{
return __y < __x;
}
template <class _Tp, size_t _Size>
_LIBCPP_INLINE_VISIBILITY inline
bool
operator<=(const array<_Tp, _Size>& __x, const array<_Tp, _Size>& __y)
{
return !(__y < __x);
}
template <class _Tp, size_t _Size>
_LIBCPP_INLINE_VISIBILITY inline
bool
operator>=(const array<_Tp, _Size>& __x, const array<_Tp, _Size>& __y)
{
return !(__x < __y);
}
template <class _Tp, size_t _Size>
_LIBCPP_INLINE_VISIBILITY inline
void
swap(const array<_Tp, _Size>& __x, const array<_Tp, _Size>& __y)
{
__x.swap(__y);
}
template <class _Tp, size_t _Size>
class tuple_size<array<_Tp, _Size> > : public integral_constant<size_t, _Size> {};
template <class _Tp, size_t _Size>
class tuple_size<const array<_Tp, _Size> > : public integral_constant<size_t, _Size> {};
template <size_t _Ip, class _Tp, size_t _Size>
class tuple_element<_Ip, array<_Tp, _Size> >
{
public:
typedef _Tp type;
};
template <size_t _Ip, class _Tp, size_t _Size>
class tuple_element<_Ip, const array<_Tp, _Size> >
{
public:
typedef const _Tp type;
};
template <size_t _Ip, class _Tp, size_t _Size>
_LIBCPP_INLINE_VISIBILITY inline
_Tp&
get(array<_Tp, _Size>& __a)
{
return __a[_Ip];
}
template <size_t _Ip, class _Tp, size_t _Size>
_LIBCPP_INLINE_VISIBILITY inline
const _Tp&
get(const array<_Tp, _Size>& __a)
{
return __a[_Ip];
}
_LIBCPP_END_NAMESPACE_STD
#endif // _LIBCPP_ARRAY