mirror of
https://github.com/bolero-MURAKAMI/Sprout.git
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99 lines
4 KiB
C++
99 lines
4 KiB
C++
/*=============================================================================
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Copyright (c) 2011-2014 Bolero MURAKAMI
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https://github.com/bolero-MURAKAMI/Sprout
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Distributed under the Boost Software License, Version 1.0. (See accompanying
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file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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=============================================================================*/
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#ifndef SPROUT_ALGORITHM_FIXED_MAKE_PARTIAL_HEAP_HPP
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#define SPROUT_ALGORITHM_FIXED_MAKE_PARTIAL_HEAP_HPP
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#include <sprout/config.hpp>
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#include <sprout/container/traits.hpp>
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#include <sprout/container/functions.hpp>
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#include <sprout/iterator/operation.hpp>
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#include <sprout/algorithm/fixed/results.hpp>
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#include <sprout/algorithm/fixed/swap_element.hpp>
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#include <sprout/algorithm/fixed/pop_heap.hpp>
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#include <sprout/algorithm/fixed/make_heap.hpp>
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#include HDR_FUNCTIONAL_SSCRISK_CEL_OR_SPROUT
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namespace sprout {
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namespace fixed {
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namespace detail {
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template<typename Container, typename Compare>
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inline SPROUT_CONSTEXPR typename sprout::fixed::results::algorithm<Container>::type
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make_partial_heap_impl_1(
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Container const& cont, Compare comp,
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typename sprout::container_traits<Container>::difference_type offset,
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typename sprout::container_traits<Container>::difference_type size,
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typename sprout::container_traits<Container>::difference_type middle_size,
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typename sprout::container_traits<Container>::difference_type n
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)
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{
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return n < size
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? comp(*sprout::next(sprout::internal_begin(cont), offset + n), *sprout::next(sprout::internal_begin(cont), offset))
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? sprout::fixed::detail::make_partial_heap_impl_1(
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sprout::fixed::detail::pop_heap_impl(
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sprout::fixed::swap_element(
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cont,
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sprout::next(sprout::internal_begin(cont), offset + n),
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sprout::next(sprout::internal_begin(cont), offset)
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),
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comp,
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offset, middle_size
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),
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comp,
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offset, size, middle_size, n + 1
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)
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: sprout::fixed::detail::make_partial_heap_impl_1(cont, comp, offset, size, middle_size, n + 1)
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: sprout::deep_copy(cont)
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;
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}
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template<typename Container, typename Compare>
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inline SPROUT_CONSTEXPR typename sprout::fixed::results::algorithm<Container>::type
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make_partial_heap_impl(
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Container const& cont, Compare comp,
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typename sprout::container_traits<Container>::difference_type offset,
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typename sprout::container_traits<Container>::difference_type size,
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typename sprout::container_traits<Container>::difference_type middle_size
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)
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{
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return sprout::fixed::detail::make_partial_heap_impl_1(
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sprout::fixed::detail::make_heap_impl(cont, comp, offset, middle_size), comp,
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offset, size, middle_size, middle_size
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);
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}
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} // namespace detail
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//
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// make_partial_heap
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//
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template<typename Container, typename Compare>
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inline SPROUT_CONSTEXPR typename sprout::fixed::results::algorithm<Container>::type
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make_partial_heap(Container const& cont, typename sprout::container_traits<Container>::const_iterator middle, Compare comp) {
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return sprout::fixed::detail::make_partial_heap_impl(
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cont, comp,
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sprout::internal_begin_offset(cont),
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sprout::size(cont),
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sprout::distance(sprout::begin(cont), middle)
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);
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}
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//
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// make_partial_heap
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//
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template<typename Container>
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inline SPROUT_CONSTEXPR typename sprout::fixed::results::algorithm<Container>::type
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make_partial_heap(Container const& cont, typename sprout::container_traits<Container>::const_iterator middle) {
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return sprout::fixed::detail::make_partial_heap_impl(
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cont, NS_SSCRISK_CEL_OR_SPROUT::less<typename sprout::container_traits<Container>::value_type>(),
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sprout::internal_begin_offset(cont),
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sprout::size(cont),
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sprout::distance(sprout::begin(cont), middle)
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);
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}
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} // namespace fixed
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using sprout::fixed::make_partial_heap;
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} // namespace sprout
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#endif // #ifndef SPROUT_ALGORITHM_FIXED_MAKE_PARTIAL_HEAP_HPP
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