| // class template array -*- C++ -*- |
| |
| // Copyright (C) 2004, 2005, 2006 Free Software Foundation, Inc. |
| // |
| // This file is part of the GNU ISO C++ Library. This library is free |
| // software; you can redistribute it and/or modify it under the |
| // terms of the GNU General Public License as published by the |
| // Free Software Foundation; either version 2, or (at your option) |
| // any later version. |
| |
| // This library is distributed in the hope that it will be useful, |
| // but WITHOUT ANY WARRANTY; without even the implied warranty of |
| // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| // GNU General Public License for more details. |
| |
| // You should have received a copy of the GNU General Public License along |
| // with this library; see the file COPYING. If not, write to the Free |
| // Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, |
| // USA. |
| |
| // As a special exception, you may use this file as part of a free software |
| // library without restriction. Specifically, if other files instantiate |
| // templates or use macros or inline functions from this file, or you compile |
| // this file and link it with other files to produce an executable, this |
| // file does not by itself cause the resulting executable to be covered by |
| // the GNU General Public License. This exception does not however |
| // invalidate any other reasons why the executable file might be covered by |
| // the GNU General Public License. |
| |
| /** @file tr1/array |
| * This is a TR1 C++ Library header. |
| */ |
| |
| #ifndef _TR1_ARRAY |
| #define _TR1_ARRAY 1 |
| |
| #include <new> |
| #include <iterator> |
| #include <algorithm> |
| #include <cstddef> |
| #include <bits/functexcept.h> |
| #include <ext/type_traits.h> |
| |
| //namespace std::tr1 |
| namespace std |
| { |
| _GLIBCXX_BEGIN_NAMESPACE(tr1) |
| |
| /// @brief struct array [6.2.2]. |
| /// NB: Requires complete type _Tp. |
| template<typename _Tp, std::size_t _Nm> |
| struct array |
| { |
| 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 std::size_t size_type; |
| typedef std::ptrdiff_t difference_type; |
| typedef std::reverse_iterator<iterator> reverse_iterator; |
| typedef std::reverse_iterator<const_iterator> const_reverse_iterator; |
| |
| // Support for zero-sized arrays mandatory. |
| value_type _M_instance[_Nm ? _Nm : 1] __attribute__((__aligned__)); |
| |
| // No explicit construct/copy/destroy for aggregate type. |
| |
| void |
| assign(const value_type& __u) |
| { std::fill_n(begin(), size(), __u); } |
| |
| void |
| swap(array& __other) |
| { std::swap_ranges(begin(), end(), __other.begin()); } |
| |
| // Iterators. |
| iterator |
| begin() |
| { return iterator(&_M_instance[0]); } |
| |
| const_iterator |
| begin() const |
| { return const_iterator(&_M_instance[0]); } |
| |
| iterator |
| end() |
| { return iterator(&_M_instance[_Nm]); } |
| |
| const_iterator |
| end() const |
| { return const_iterator(&_M_instance[_Nm]); } |
| |
| reverse_iterator |
| rbegin() |
| { return reverse_iterator(end()); } |
| |
| const_reverse_iterator |
| rbegin() const |
| { return const_reverse_iterator(end()); } |
| |
| reverse_iterator |
| rend() |
| { return reverse_iterator(begin()); } |
| |
| const_reverse_iterator |
| rend() const |
| { return const_reverse_iterator(begin()); } |
| |
| // Capacity. |
| size_type |
| size() const { return _Nm; } |
| |
| size_type |
| max_size() const { return _Nm; } |
| |
| bool |
| empty() const { return size() == 0; } |
| |
| // Element access. |
| reference |
| operator[](size_type __n) |
| { return _M_instance[__n]; } |
| |
| const_reference |
| operator[](size_type __n) const |
| { return _M_instance[__n]; } |
| |
| reference |
| at(size_type __n) |
| { |
| _M_check<_Nm>(__n); |
| return _M_instance[__n]; |
| } |
| |
| const_reference |
| at(size_type __n) const |
| { |
| _M_check<_Nm>(__n); |
| return _M_instance[__n]; |
| } |
| |
| reference |
| front() |
| { return *begin(); } |
| |
| const_reference |
| front() const |
| { return *begin(); } |
| |
| reference |
| back() |
| { return _Nm ? *(end() - 1) : *end(); } |
| |
| const_reference |
| back() const |
| { return _Nm ? *(end() - 1) : *end(); } |
| |
| _Tp* |
| data() |
| { return &_M_instance[0]; } |
| |
| const _Tp* |
| data() const |
| { return &_M_instance[0]; } |
| |
| private: |
| template<std::size_t _Mm> |
| typename __gnu_cxx::__enable_if<_Mm, void>::__type |
| _M_check(size_type __n) const |
| { |
| if (__builtin_expect(__n >= _Mm, false)) |
| std::__throw_out_of_range(__N("array::_M_check")); |
| } |
| |
| // Avoid "unsigned comparison with zero" warnings. |
| template<std::size_t _Mm> |
| typename __gnu_cxx::__enable_if<!_Mm, void>::__type |
| _M_check(size_type) const |
| { std::__throw_out_of_range(__N("array::_M_check")); } |
| }; |
| |
| // Array comparisons. |
| template<typename _Tp, std::size_t _Nm> |
| inline bool |
| operator==(const array<_Tp, _Nm>& __one, const array<_Tp, _Nm>& __two) |
| { return std::equal(__one.begin(), __one.end(), __two.begin()); } |
| |
| template<typename _Tp, std::size_t _Nm> |
| inline bool |
| operator!=(const array<_Tp, _Nm>& __one, const array<_Tp, _Nm>& __two) |
| { return !(__one == __two); } |
| |
| template<typename _Tp, std::size_t _Nm> |
| inline bool |
| operator<(const array<_Tp, _Nm>& __a, const array<_Tp, _Nm>& __b) |
| { |
| return std::lexicographical_compare(__a.begin(), __a.end(), |
| __b.begin(), __b.end()); |
| } |
| |
| template<typename _Tp, std::size_t _Nm> |
| inline bool |
| operator>(const array<_Tp, _Nm>& __one, const array<_Tp, _Nm>& __two) |
| { return __two < __one; } |
| |
| template<typename _Tp, std::size_t _Nm> |
| inline bool |
| operator<=(const array<_Tp, _Nm>& __one, const array<_Tp, _Nm>& __two) |
| { return !(__one > __two); } |
| |
| template<typename _Tp, std::size_t _Nm> |
| inline bool |
| operator>=(const array<_Tp, _Nm>& __one, const array<_Tp, _Nm>& __two) |
| { return !(__one < __two); } |
| |
| // Specialized algorithms [6.2.2.2]. |
| template<typename _Tp, std::size_t _Nm> |
| inline void |
| swap(array<_Tp, _Nm>& __one, array<_Tp, _Nm>& __two) |
| { std::swap_ranges(__one.begin(), __one.end(), __two.begin()); } |
| |
| // Tuple interface to class template array [6.2.2.5]. |
| template<typename _Tp> class tuple_size; |
| template<int _Int, typename _Tp> class tuple_element; |
| |
| template<typename _Tp, std::size_t _Nm> |
| struct tuple_size<array<_Tp, _Nm> > |
| { static const int value = _Nm; }; |
| |
| template<typename _Tp, std::size_t _Nm> |
| const int tuple_size<array<_Tp, _Nm> >::value; |
| |
| template<int _Int, typename _Tp, std::size_t _Nm> |
| struct tuple_element<_Int, array<_Tp, _Nm> > |
| { typedef _Tp type; }; |
| |
| template<int _Int, typename _Tp, std::size_t _Nm> |
| inline _Tp& |
| get(array<_Tp, _Nm>& __arr) |
| { return __arr[_Int]; } |
| |
| template<int _Int, typename _Tp, std::size_t _Nm> |
| inline const _Tp& |
| get(const array<_Tp, _Nm>& __arr) |
| { return __arr[_Int]; } |
| |
| _GLIBCXX_END_NAMESPACE |
| } |
| |
| #endif |
