mirror of
https://github.com/bolero-MURAKAMI/Sprout.git
synced 2024-11-14 10:39:05 +00:00
91 lines
3 KiB
C++
91 lines
3 KiB
C++
/*=============================================================================
|
|
Copyright (c) 2011-2016 Bolero MURAKAMI
|
|
https://github.com/bolero-MURAKAMI/Sprout
|
|
|
|
Distributed under the Boost Software License, Version 1.0. (See accompanying
|
|
file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
|
|
=============================================================================*/
|
|
#ifndef SPROUT_CONTAINER_SHRINK_TO_FIT_HPP
|
|
#define SPROUT_CONTAINER_SHRINK_TO_FIT_HPP
|
|
|
|
#include <utility>
|
|
#include <type_traits>
|
|
#include <sprout/config.hpp>
|
|
#include <sprout/type_traits/integral_constant.hpp>
|
|
#include <sprout/type_traits/identity.hpp>
|
|
#include <sprout/utility/forward.hpp>
|
|
#include <sprout/adl/not_found.hpp>
|
|
|
|
namespace sprout_adl {
|
|
sprout::not_found_via_adl container_shrink_to_fit(...);
|
|
} // namespace sprout_adl
|
|
|
|
namespace sprout {
|
|
namespace detail {
|
|
template<typename T>
|
|
struct has_mem_shrink_to_fit_test {
|
|
public:
|
|
template<
|
|
typename U = T,
|
|
typename = typename sprout::identity<decltype(std::declval<U>().shrink_to_fit())>::type
|
|
>
|
|
static sprout::true_type test(int);
|
|
static sprout::false_type test(...);
|
|
};
|
|
#if defined(_MSC_VER) && (_MSC_VER > 1900)
|
|
template<typename T, typename Base_ = typename sprout::identity<decltype(sprout::detail::has_mem_shrink_to_fit_test<T>::test(0))>::type>
|
|
struct has_mem_shrink_to_fit
|
|
: public Base_
|
|
{};
|
|
#else
|
|
template<typename T>
|
|
struct has_mem_shrink_to_fit
|
|
: public sprout::identity<decltype(sprout::detail::has_mem_shrink_to_fit_test<T>::test(0))>::type
|
|
{};
|
|
#endif
|
|
|
|
template<typename Container>
|
|
inline SPROUT_CXX14_CONSTEXPR typename std::enable_if<
|
|
sprout::detail::has_mem_shrink_to_fit<Container&&>::value
|
|
>::type
|
|
container_shrink_to_fit_default(Container&& cont) {
|
|
return SPROUT_FORWARD(Container, cont).shrink_to_fit();
|
|
}
|
|
template<typename Container>
|
|
inline SPROUT_CXX14_CONSTEXPR typename std::enable_if<
|
|
!sprout::detail::has_mem_shrink_to_fit<Container&&>::value
|
|
>::type
|
|
container_shrink_to_fit_default(Container&&) {
|
|
return ;
|
|
}
|
|
} // namespace detail
|
|
|
|
namespace container_detail {
|
|
template<typename Container>
|
|
inline SPROUT_CXX14_CONSTEXPR void
|
|
container_shrink_to_fit(Container&& cont) {
|
|
return sprout::detail::container_shrink_to_fit_default(SPROUT_FORWARD(Container, cont));
|
|
}
|
|
} // namespace container_detail
|
|
|
|
//
|
|
// shrink_to_fit
|
|
//
|
|
// effect:
|
|
// ADL callable container_shrink_to_fit(cont) -> container_shrink_to_fit(cont)
|
|
// [default]
|
|
// callable cont.shrink_to_fit() -> cont.shrink_to_fit()
|
|
// otherwise -> no effects
|
|
//
|
|
template<typename Container>
|
|
inline SPROUT_CXX14_CONSTEXPR void
|
|
shrink_to_fit(Container&& cont) {
|
|
using sprout::container_detail::container_shrink_to_fit;
|
|
using sprout_adl::container_shrink_to_fit;
|
|
return container_shrink_to_fit(SPROUT_FORWARD(Container, cont));
|
|
}
|
|
} // namespace sprout
|
|
|
|
#include <sprout/container/container_range_traits.hpp>
|
|
|
|
#endif // #ifndef SPROUT_CONTAINER_SHRINK_TO_FIT_HPP
|