Sprout/sprout/container/container_traits.hpp

98 lines
3.3 KiB
C++

#ifndef SPROUT_CONTAINER_CONTAINER_TRAITS_HPP
#define SPROUT_CONTAINER_CONTAINER_TRAITS_HPP
#include <cstddef>
#include <array>
#include <sprout/config.hpp>
namespace sprout {
//
// container_traits
//
template<typename Container>
struct container_traits;
namespace detail {
template<typename Container>
struct container_traits_default_types {
public:
typedef typename Container::value_type value_type;
typedef typename Container::iterator iterator;
typedef typename Container::const_iterator const_iterator;
typedef typename Container::reference reference;
typedef typename Container::const_reference const_reference;
typedef typename Container::size_type size_type;
typedef typename Container::difference_type difference_type;
typedef typename Container::pointer pointer;
typedef typename Container::const_pointer const_pointer;
};
template<typename T, std::size_t N>
struct container_traits_default_types<T[N]> {
public:
typedef T value_type;
typedef T* iterator;
typedef T const* const_iterator;
typedef T& reference;
typedef T const& const_reference;
typedef std::size_t size_type;
typedef std::ptrdiff_t difference_type;
typedef T* pointer;
typedef T const* const_pointer;
};
template<typename Container>
struct container_traits_default_size {
public:
SPROUT_STATIC_CONSTEXPR typename sprout::detail::container_traits_default_types<Container>::size_type static_size
= std::tuple_size<Container>::value
;
public:
static SPROUT_CONSTEXPR typename sprout::detail::container_traits_default_types<Container>::size_type fixed_size() {
return static_size;
}
};
template<typename T, std::size_t N>
struct container_traits_default_size<T[N]> {
public:
SPROUT_STATIC_CONSTEXPR typename sprout::detail::container_traits_default_types<T[N]>::size_type static_size
= N
;
public:
static SPROUT_CONSTEXPR typename sprout::detail::container_traits_default_types<T[N]>::size_type fixed_size() {
return static_size;
}
};
} // namespace detail
template<typename Container>
struct container_traits
: public sprout::detail::container_traits_default_types<Container>
, public sprout::detail::container_traits_default_size<Container>
{};
template<typename Container>
struct container_traits<Container const>
: public sprout::container_traits<Container>
{
public:
typedef typename sprout::container_traits<Container>::const_iterator iterator;
typedef typename sprout::container_traits<Container>::const_reference reference;
typedef typename sprout::container_traits<Container>::const_pointer pointer;
};
template<typename T, std::size_t N>
struct container_traits<T[N]>
: public sprout::detail::container_traits_default_types<T[N]>
, public sprout::detail::container_traits_default_size<T[N]>
{};
template<typename T, std::size_t N>
struct container_traits<T const[N]>
: public sprout::container_traits<T[N]>
{
public:
typedef typename sprout::container_traits<T[N]>::const_iterator iterator;
typedef typename sprout::container_traits<T[N]>::const_reference reference;
typedef typename sprout::container_traits<T[N]>::const_pointer pointer;
};
} // namespace sprout
#endif // #ifndef SPROUT_CONTAINER_CONTAINER_TRAITS_HPP