mirror of
https://github.com/bolero-MURAKAMI/Sprout
synced 2024-11-12 21:09:01 +00:00
90 lines
3.1 KiB
C++
90 lines
3.1 KiB
C++
#ifndef SPROUT_OPERATION_FIXED_JOIN_HPP
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#define SPROUT_OPERATION_FIXED_JOIN_HPP
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#include <cstddef>
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#include <sprout/config.hpp>
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#include <sprout/index_tuple.hpp>
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#include <sprout/fixed_container/traits.hpp>
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#include <sprout/fixed_container/functions.hpp>
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#include HDR_ITERATOR_SSCRISK_CEL_OR_SPROUT_DETAIL
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namespace sprout {
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namespace fixed {
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namespace result_of {
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//
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// join
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//
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template<typename Container, typename Input>
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struct join {
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public:
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typedef typename sprout::rebind_fixed_size<
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typename sprout::fixed_container_traits<Container>::fixed_container_type
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>::template apply<
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sprout::fixed_container_traits<Container>::fixed_size + sprout::fixed_container_traits<Input>::fixed_size
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>::type type;
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};
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} // namespace result_of
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namespace detail {
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template<typename Result, typename Container, typename Input, std::ptrdiff_t... Indexes>
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SPROUT_CONSTEXPR inline Result join_impl(
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Container const& cont,
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sprout::index_tuple<Indexes...>,
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typename sprout::fixed_container_traits<Container>::difference_type pos,
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typename sprout::fixed_container_traits<Container>::difference_type size,
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Input const& input
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)
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{
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return Result{
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(Indexes < sprout::fixed_container_traits<Container>::fixed_size + size
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? (Indexes < pos
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? *(sprout::fixed_begin(cont) + Indexes)
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: Indexes < pos + size
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? *(sprout::begin(input) + Indexes - pos)
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: *(sprout::fixed_begin(cont) + Indexes - size)
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)
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: typename sprout::fixed_container_traits<Result>::value_type{}
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)...
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};
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}
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} // namespace detail
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//
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// join
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//
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template<typename Container, typename Input>
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SPROUT_CONSTEXPR inline typename sprout::fixed::result_of::join<Container, Input>::type join(
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Container const& cont,
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typename sprout::fixed_container_traits<Container>::const_iterator pos,
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Input const& input
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)
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{
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return sprout::fixed::detail::join_impl<typename sprout::fixed::result_of::join<Container, Input>::type>(
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cont,
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typename sprout::index_range<0, sprout::fixed_container_traits<typename sprout::fixed::result_of::join<Container, Input>::type>::fixed_size>::type(),
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NS_SSCRISK_CEL_OR_SPROUT_DETAIL::distance(sprout::fixed_begin(cont), pos),
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sprout::size(input),
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input
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);
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}
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//
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// join
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//
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template<typename Container, typename Input>
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SPROUT_CONSTEXPR inline typename sprout::fixed::result_of::join<Container, Input>::type join(
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Container const& cont,
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typename sprout::fixed_container_traits<Container>::difference_type pos,
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Input const& input
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)
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{
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return sprout::fixed::detail::join_impl<typename sprout::fixed::result_of::join<Container, Input>::type>(
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cont,
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typename sprout::index_range<0, sprout::fixed_container_traits<typename sprout::fixed::result_of::join<Container, Input>::type>::fixed_size>::type(),
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NS_SSCRISK_CEL_OR_SPROUT_DETAIL::distance(sprout::fixed_begin(cont), sprout::begin(cont) + pos),
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sprout::size(input),
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input
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);
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}
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} // namespace fixed
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} // namespace sprout
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#endif // #ifndef SPROUT_OPERATION_FIXED_JOIN_HPP
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