mirror of
https://github.com/bolero-MURAKAMI/Sprout.git
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74 lines
2.6 KiB
C++
74 lines
2.6 KiB
C++
#ifndef SPROUT_CONTAINER_WEAK_REBIND_SIZE_HPP
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#define SPROUT_CONTAINER_WEAK_REBIND_SIZE_HPP
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#include <type_traits>
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#include <sprout/config.hpp>
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#include <sprout/container/container_transform_traits.hpp>
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namespace sprout {
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namespace containers {
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namespace detail {
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template<
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typename T,
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template<typename sprout::container_traits<T>::size_type> class = T::template rebind_size
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>
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std::true_type sprout_has_xxx_impl_check_template_rebind_size(int);
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template<typename T>
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std::false_type sprout_has_xxx_impl_check_template_rebind_size(long);
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template<typename T>
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struct has_rebind_size
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: decltype(sprout::containers::detail::sprout_has_xxx_impl_check_template_rebind_size<T>(0))
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{};
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} // namespace detail
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//
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// is_rebindable_size
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//
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template<typename Container>
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struct is_rebindable_size
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: public sprout::containers::detail::has_rebind_size<
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sprout::container_transform_traits<Container>
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>
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{};
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template<typename Container>
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struct is_rebindable_size<Container const>
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: public sprout::containers::is_rebindable_size<Container>
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{};
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template<typename Container>
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struct is_rebindable_size<Container volatile>
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: public sprout::containers::is_rebindable_size<Container>
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{};
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template<typename Container>
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struct is_rebindable_size<Container const volatile>
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: public sprout::containers::is_rebindable_size<Container>
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{};
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namespace detail {
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template<typename Container, typename sprout::container_traits<Container>::size_type Size, typename = void>
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struct weak_rebind_size_impl;
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template<typename Container, typename sprout::container_traits<Container>::size_type Size>
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struct weak_rebind_size_impl<
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Container, Size,
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typename std::enable_if<sprout::containers::is_rebindable_size<Container>::value>::type
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>
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: public sprout::container_transform_traits<Container>::template rebind_size<Size>
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{};
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template<typename Container, typename sprout::container_traits<Container>::size_type Size>
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struct weak_rebind_size_impl<
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Container, Size,
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typename std::enable_if<!sprout::containers::is_rebindable_size<Container>::value>::type
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> {
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public:
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typedef Container type;
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};
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} // namespace detail
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//
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// weak_rebind_size
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//
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template<typename Container, typename sprout::container_traits<Container>::size_type Size>
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struct weak_rebind_size
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: public sprout::containers::detail::weak_rebind_size_impl<Container, Size>
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{};
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} // namespace containers
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} // namespace sprout
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#endif // #ifndef SPROUT_CONTAINER_WEAK_REBIND_SIZE_HPP
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