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add subscript_at function

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This commit is contained in:
bolero-MURAKAMI 2016-04-17 19:36:56 +09:00
parent 8278a2642c
commit 0080332dd5
12 changed files with 341 additions and 54 deletions
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44
sprout/container/std/array.hpp
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@ -18,27 +18,9 @@
#include <sprout/utility/forward.hpp>
#include <sprout/utility/as_const.hpp>
#include <sprout/memory/addressof.hpp>
#include <sprout/functional/transparent.hpp>
#include <sprout/detail/functional/const_subscript.hpp>
namespace sprout {
namespace detail {
template<typename T = void>
struct const_subscript;
template<>
struct const_subscript<void>
: public sprout::transparent<>
{
public:
template<typename T, typename U>
SPROUT_CONSTEXPR decltype(std::declval<T>()[std::declval<U>()])
operator()(T&& x, U&& y)
const SPROUT_NOEXCEPT_IF_EXPR(const_cast<decltype(std::declval<T>()[std::declval<U>()])>(sprout::as_const(std::declval<T>())[std::declval<U>()]))
{
return const_cast<decltype(std::declval<T>()[std::declval<U>()])>(sprout::as_const(x)[SPROUT_FORWARD(U, y)]);
}
};
} // namespace detail
//
// container_traits
//
@ -60,10 +42,6 @@ namespace sprout {
{
private:
typedef sprout::detail::container_range_traits_default<std::array<T, N> > base_type;
public:
using base_type::range_front;
using base_type::range_back;
using base_type::range_at;
public:
// iterators:
static SPROUT_CONSTEXPR typename sprout::container_traits<std::array<T, N> >::iterator
@ -82,27 +60,7 @@ namespace sprout {
range_end(std::array<T, N> const& cont) {
return typename sprout::container_traits<std::array<T, N> const>::iterator(cont, cont.size());
}
// element access:
static SPROUT_CONSTEXPR typename sprout::container_traits<std::array<T, N> >::reference
range_front(std::array<T, N>& cont) {
typedef typename sprout::container_traits<std::array<T, N> >::reference type;
return const_cast<type>(base_type::range_front(sprout::as_const(cont)));
}
static SPROUT_CONSTEXPR typename sprout::container_traits<std::array<T, N> >::reference
range_back(std::array<T, N>& cont) {
typedef typename sprout::container_traits<std::array<T, N> >::reference type;
return const_cast<type>(base_type::range_back(sprout::as_const(cont)));
}
static SPROUT_CONSTEXPR typename sprout::container_traits<std::array<T, N> >::reference
range_at(std::array<T, N>& cont, typename sprout::container_traits<std::array<T, N> >::size_type i) {
typedef typename sprout::container_traits<std::array<T, N> >::reference type;
return const_cast<type>(base_type::range_at(sprout::as_const(cont), i));
}
// data access:
static SPROUT_CONSTEXPR typename sprout::container_traits<std::array<T, N> >::pointer
range_data(std::array<T, N>& cont) {
return sprout::addressof(range_front(cont));
}
static SPROUT_CONSTEXPR typename sprout::container_traits<std::array<T, N> const>::pointer
range_data(std::array<T, N> const& cont) {
return sprout::addressof(range_front(cont));