mirror of
https://github.com/bolero-MURAKAMI/Sprout.git
synced 2024-12-25 21:35:41 +00:00
102 lines
3.2 KiB
C++
102 lines
3.2 KiB
C++
/*=============================================================================
|
|
Copyright (c) 2011-2013 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_OPERATION_FIXED_RESIZE_HPP
|
|
#define SPROUT_OPERATION_FIXED_RESIZE_HPP
|
|
|
|
#include <cstddef>
|
|
#include <sprout/config.hpp>
|
|
#include <sprout/index_tuple/metafunction.hpp>
|
|
#include <sprout/container/traits.hpp>
|
|
#include <sprout/container/functions.hpp>
|
|
#include <sprout/container/indexes.hpp>
|
|
#include <sprout/iterator/operation.hpp>
|
|
|
|
namespace sprout {
|
|
namespace fixed {
|
|
namespace results {
|
|
//
|
|
// resize
|
|
//
|
|
template<std::size_t N, typename Container>
|
|
struct resize
|
|
: public sprout::container_transform_traits<
|
|
Container
|
|
>::template rebind_size<
|
|
N
|
|
>
|
|
{};
|
|
} // namespace results
|
|
|
|
namespace detail {
|
|
template<typename Result, typename Container, typename T, sprout::index_t... Indexes>
|
|
inline SPROUT_CONSTEXPR Result
|
|
resize_impl(
|
|
Container const& cont, sprout::index_tuple<Indexes...>,
|
|
typename sprout::container_traits<Result>::difference_type size, T const& v
|
|
)
|
|
{
|
|
return sprout::make<Result>(
|
|
(Indexes < size
|
|
? *sprout::next(sprout::begin(cont), Indexes)
|
|
: v
|
|
)...
|
|
);
|
|
}
|
|
} // namespace detail
|
|
//
|
|
// resize
|
|
//
|
|
template<std::size_t N, typename Container, typename T>
|
|
inline SPROUT_CONSTEXPR typename sprout::fixed::results::resize<N, Container>::type
|
|
resize(Container const& cont, T const& v) {
|
|
return sprout::fixed::detail::resize_impl<typename sprout::fixed::results::resize<N, Container>::type>(
|
|
cont,
|
|
sprout::container_indexes<typename sprout::fixed::results::resize<N, Container>::type>::make(),
|
|
sprout::size(cont),
|
|
v
|
|
);
|
|
}
|
|
|
|
namespace detail {
|
|
template<typename Result, typename Container, sprout::index_t... Indexes>
|
|
inline SPROUT_CONSTEXPR Result
|
|
resize_impl(
|
|
Container const& cont, sprout::index_tuple<Indexes...>,
|
|
typename sprout::container_traits<Result>::difference_type size
|
|
)
|
|
{
|
|
return sprout::make<Result>(
|
|
(Indexes < size
|
|
? *sprout::next(sprout::begin(cont), Indexes)
|
|
: typename sprout::container_traits<Result>::value_type()
|
|
)...
|
|
);
|
|
}
|
|
} // namespace detail
|
|
//
|
|
// resize
|
|
//
|
|
template<std::size_t N, typename Container>
|
|
inline SPROUT_CONSTEXPR typename sprout::fixed::results::resize<N, Container>::type
|
|
resize(Container const& cont) {
|
|
return sprout::fixed::detail::resize_impl<typename sprout::fixed::results::resize<N, Container>::type>(
|
|
cont,
|
|
sprout::container_indexes<typename sprout::fixed::results::resize<N, Container>::type>::make(),
|
|
sprout::size(cont)
|
|
);
|
|
}
|
|
} // namespace fixed
|
|
|
|
namespace results {
|
|
using sprout::fixed::results::resize;
|
|
} // namespace results
|
|
|
|
using sprout::fixed::resize;
|
|
} // namespace sprout
|
|
|
|
#endif // #ifndef SPROUT_OPERATION_FIXED_RESIZE_HPP
|