mirror of
https://github.com/bolero-MURAKAMI/Sprout.git
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114 lines
4.6 KiB
C++
114 lines
4.6 KiB
C++
/*=============================================================================
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Copyright (c) 2011-2016 Bolero MURAKAMI
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https://github.com/bolero-MURAKAMI/Sprout
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Distributed under the Boost Software License, Version 1.0. (See accompanying
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file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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=============================================================================*/
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#ifndef SPROUT_CONTAINER_STD_ARRAY_HPP
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#define SPROUT_CONTAINER_STD_ARRAY_HPP
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#include <array>
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#include <utility>
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#include <type_traits>
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#include <sprout/config.hpp>
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#include <sprout/workaround/std/cstddef.hpp>
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#include <sprout/container/traits.hpp>
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#include <sprout/iterator/index_iterator.hpp>
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#include <sprout/utility/forward.hpp>
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#include <sprout/utility/as_const.hpp>
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#include <sprout/memory/addressof.hpp>
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#include <sprout/functional/transparent.hpp>
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namespace sprout {
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namespace detail {
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template<typename T = void>
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struct const_subscript;
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template<>
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struct const_subscript<void>
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: public sprout::transparent<>
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{
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public:
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template<typename T, typename U>
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SPROUT_CONSTEXPR decltype(std::declval<T>()[std::declval<U>()])
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operator()(T&& x, U&& y)
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const SPROUT_NOEXCEPT_IF_EXPR(std::declval<T>()[std::declval<U>()])
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{
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typedef decltype(std::declval<T>()[std::declval<U>()]) type;
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return const_cast<type>(sprout::as_const(x)[SPROUT_FORWARD(U, y)]);
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}
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};
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} // namespace detail
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//
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// container_traits
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//
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template<typename T, std::size_t N>
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struct container_traits<std::array<T, N> >
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: public sprout::detail::container_traits_default<std::array<T, N> >
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{
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public:
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typedef sprout::index_iterator<std::array<T, N>&, true, sprout::detail::const_subscript<> > iterator;
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typedef sprout::index_iterator<std::array<T, N> const&, true, sprout::detail::const_subscript<> > const_iterator;
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};
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//
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// container_range_traits
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//
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template<typename T, std::size_t N>
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struct container_range_traits<std::array<T, N> >
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: public sprout::detail::container_range_traits_default<std::array<T, N> >
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{
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private:
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typedef sprout::detail::container_range_traits_default<std::array<T, N> > base_type;
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public:
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using base_type::range_front;
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using base_type::range_back;
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using base_type::range_at;
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public:
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// iterators:
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static SPROUT_CONSTEXPR typename sprout::container_traits<std::array<T, N> >::iterator
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range_begin(std::array<T, N>& cont) {
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return typename sprout::container_traits<std::array<T, N> >::iterator(cont, 0);
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}
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static SPROUT_CONSTEXPR typename sprout::container_traits<std::array<T, N> const>::iterator
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range_begin(std::array<T, N> const& cont) {
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return typename sprout::container_traits<std::array<T, N> const>::iterator(cont, 0);
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}
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static SPROUT_CONSTEXPR typename sprout::container_traits<std::array<T, N> >::iterator
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range_end(std::array<T, N>& cont) {
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return typename sprout::container_traits<std::array<T, N> >::iterator(cont, cont.size());
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}
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static SPROUT_CONSTEXPR typename sprout::container_traits<std::array<T, N> const>::iterator
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range_end(std::array<T, N> const& cont) {
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return typename sprout::container_traits<std::array<T, N> const>::iterator(cont, cont.size());
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}
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// element access:
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static SPROUT_CONSTEXPR typename sprout::container_traits<std::array<T, N> >::reference
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range_front(std::array<T, N>& cont) {
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typedef typename sprout::container_traits<std::array<T, N> >::reference type;
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return const_cast<type>(base_type::range_front(sprout::as_const(cont)));
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}
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static SPROUT_CONSTEXPR typename sprout::container_traits<std::array<T, N> >::reference
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range_back(std::array<T, N>& cont) {
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typedef typename sprout::container_traits<std::array<T, N> >::reference type;
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return const_cast<type>(base_type::range_back(sprout::as_const(cont)));
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}
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static SPROUT_CONSTEXPR typename sprout::container_traits<std::array<T, N> >::reference
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range_at(std::array<T, N>& cont, typename sprout::container_traits<std::array<T, N> >::size_type i) {
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typedef typename sprout::container_traits<std::array<T, N> >::reference type;
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return const_cast<type>(base_type::range_at(sprout::as_const(cont), i));
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}
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// data access:
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static SPROUT_CONSTEXPR typename sprout::container_traits<std::array<T, N> >::pointer
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range_data(std::array<T, N>& cont) {
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return sprout::addressof(range_front(cont));
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}
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static SPROUT_CONSTEXPR typename sprout::container_traits<std::array<T, N> const>::pointer
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range_data(std::array<T, N> const& cont) {
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return sprout::addressof(range_front(cont));
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}
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};
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} // namespace sprout
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#endif // #ifndef SPROUT_CONTAINER_STD_ARRAY_HPP
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