mirror of
https://github.com/bolero-MURAKAMI/Sprout.git
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259 lines
11 KiB
C++
259 lines
11 KiB
C++
#ifndef SPROUT_ALGORITHM_FIXED_TRANSFORM_HPP
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#define SPROUT_ALGORITHM_FIXED_TRANSFORM_HPP
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#include <iterator>
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#include <type_traits>
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#include <sprout/config.hpp>
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#include <sprout/index_tuple/metafunction.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/container/indexes.hpp>
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#include <sprout/iterator/operation.hpp>
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#include <sprout/iterator/transform_iterator.hpp>
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#include <sprout/iterator/type_traits/common.hpp>
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#include <sprout/algorithm/fixed/result_of.hpp>
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#include <sprout/pit/pit.hpp>
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#include <sprout/detail/container_complate.hpp>
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namespace sprout {
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namespace fixed {
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namespace detail {
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template<typename RandomAccessIterator, typename Result, typename UnaryOperation, sprout::index_t... Indexes>
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inline SPROUT_CONSTEXPR typename sprout::fixed::result_of::algorithm<Result>::type
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transform_impl_ra(
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RandomAccessIterator first, RandomAccessIterator last,
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Result const& result, UnaryOperation op,
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sprout::index_tuple<Indexes...>,
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typename sprout::container_traits<Result>::difference_type offset,
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typename sprout::container_traits<Result>::size_type size,
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typename sprout::container_traits<Result>::size_type input_size
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)
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{
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return sprout::remake<Result>(
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result, sprout::size(result),
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(Indexes >= offset && Indexes < offset + size && Indexes < offset + input_size
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? op(first[Indexes - offset])
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: *sprout::next(sprout::internal_begin(result), Indexes)
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)...
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);
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}
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template<typename RandomAccessIterator, typename Result, typename UnaryOperation>
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inline SPROUT_CONSTEXPR typename sprout::fixed::result_of::algorithm<Result>::type
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transform(
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RandomAccessIterator first, RandomAccessIterator last,
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Result const& result, UnaryOperation op,
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std::random_access_iterator_tag*
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)
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{
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return sprout::fixed::detail::transform_impl_ra(
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first, last,
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result, op,
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sprout::container_indexes<Result>::make(),
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sprout::internal_begin_offset(result),
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sprout::size(result),
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sprout::distance(first, last)
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);
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}
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template<typename InputIterator, typename Result, typename UnaryOperation, typename... Args>
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inline SPROUT_CONSTEXPR typename std::enable_if<
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sprout::container_traits<Result>::static_size == sizeof...(Args),
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typename sprout::fixed::result_of::algorithm<Result>::type
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>::type
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transform_impl(
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InputIterator first, InputIterator last,
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Result const& result, UnaryOperation op,
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typename sprout::container_traits<Result>::size_type size,
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Args const&... args
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)
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{
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return sprout::remake<Result>(result, sprout::size(result), args...);
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}
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template<typename InputIterator, typename Result, typename UnaryOperation, typename... Args>
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inline SPROUT_CONSTEXPR typename std::enable_if<
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sprout::container_traits<Result>::static_size != sizeof...(Args),
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typename sprout::fixed::result_of::algorithm<Result>::type
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>::type
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transform_impl(
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InputIterator first, InputIterator last,
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Result const& result, UnaryOperation op,
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typename sprout::container_traits<Result>::size_type size,
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Args const&... args
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)
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{
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return first != last && sizeof...(Args) < size
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? sprout::fixed::detail::transform_impl(sprout::next(first), last, result, op, size, args..., op(*first))
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: sprout::detail::container_complate(result, args...)
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;
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}
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template<typename InputIterator, typename Result, typename UnaryOperation>
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inline SPROUT_CONSTEXPR typename sprout::fixed::result_of::algorithm<Result>::type
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transform(
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InputIterator first, InputIterator last,
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Result const& result, UnaryOperation op,
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std::input_iterator_tag*
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)
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{
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return sprout::fixed::detail::transform_impl(first, last, result, op, sprout::size(result));
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}
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template<typename InputIterator, typename Result, typename UnaryOperation>
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inline SPROUT_CONSTEXPR typename std::enable_if<
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sprout::is_fixed_container<Result>::value,
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typename sprout::fixed::result_of::algorithm<Result>::type
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>::type
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transform(InputIterator first, InputIterator last, Result const& result, UnaryOperation op) {
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typedef typename std::iterator_traits<InputIterator>::iterator_category* category;
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return sprout::fixed::detail::transform(first, last, result, op, category());
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}
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template<typename InputIterator, typename Result, typename UnaryOperation>
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inline SPROUT_CONSTEXPR typename std::enable_if<
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!sprout::is_fixed_container<Result>::value,
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typename sprout::fixed::result_of::algorithm<Result>::type
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>::type
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transform(InputIterator first, InputIterator last, Result const& result, UnaryOperation op) {
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return sprout::remake<Result>(
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result, sprout::size(result),
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sprout::make_transform_iterator(first, op),
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sprout::make_transform_iterator(last, op)
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);
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}
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} // namespace detail
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//
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// transform
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//
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template<typename InputIterator, typename Result, typename UnaryOperation>
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inline SPROUT_CONSTEXPR typename sprout::fixed::result_of::algorithm<Result>::type
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transform(InputIterator first, InputIterator last, Result const& result, UnaryOperation op) {
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return sprout::fixed::detail::transform(first, last, result, op);
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}
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template<typename Result, typename InputIterator, typename UnaryOperation>
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inline SPROUT_CONSTEXPR typename sprout::fixed::result_of::algorithm<Result>::type
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transform(InputIterator first, InputIterator last, UnaryOperation op) {
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return sprout::fixed::transform(first, last, sprout::pit<Result>(), op);
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}
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namespace detail {
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template<typename RandomAccessIterator1, typename RandomAccessIterator2, typename Result, typename BinaryOperation, sprout::index_t... Indexes>
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inline SPROUT_CONSTEXPR typename sprout::fixed::result_of::algorithm<Result>::type
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transform_impl_ra(
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RandomAccessIterator1 first1, RandomAccessIterator1 last1, RandomAccessIterator2 first2,
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Result const& result, BinaryOperation op,
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sprout::index_tuple<Indexes...>,
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typename sprout::container_traits<Result>::difference_type offset,
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typename sprout::container_traits<Result>::size_type size,
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typename sprout::container_traits<Result>::size_type input_size
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)
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{
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return sprout::remake<Result>(
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result, sprout::size(result),
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(Indexes >= offset && Indexes < offset + size && Indexes < offset + input_size
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? op(first1[Indexes - offset], first2[Indexes - offset])
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: *sprout::next(sprout::internal_begin(result), Indexes)
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)...
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);
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}
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template<typename RandomAccessIterator1, typename RandomAccessIterator2, typename Result, typename BinaryOperation>
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inline SPROUT_CONSTEXPR typename sprout::fixed::result_of::algorithm<Result>::type
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transform(
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RandomAccessIterator1 first1, RandomAccessIterator1 last1, RandomAccessIterator2 first2,
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Result const& result, BinaryOperation op,
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std::random_access_iterator_tag*
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)
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{
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return sprout::fixed::detail::transform_impl_ra(
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first1, last1, first2,
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result, op,
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sprout::container_indexes<Result>::make(),
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sprout::internal_begin_offset(result),
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sprout::size(result),
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sprout::distance(first1, last1)
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);
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}
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template<typename InputIterator1, typename InputIterator2, typename Result, typename BinaryOperation, typename... Args>
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inline SPROUT_CONSTEXPR typename std::enable_if<
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sprout::container_traits<Result>::static_size == sizeof...(Args),
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typename sprout::fixed::result_of::algorithm<Result>::type
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>::type
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transform_impl(
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InputIterator1 first1, InputIterator1 last1, InputIterator2 first2,
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Result const& result, BinaryOperation op,
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typename sprout::container_traits<Result>::size_type size,
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Args const&... args
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)
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{
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return sprout::remake<Result>(result, sprout::size(result), args...);
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}
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template<typename InputIterator1, typename InputIterator2, typename Result, typename BinaryOperation, typename... Args>
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inline SPROUT_CONSTEXPR typename std::enable_if<
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sprout::container_traits<Result>::static_size != sizeof...(Args),
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typename sprout::fixed::result_of::algorithm<Result>::type
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>::type
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transform_impl(
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InputIterator1 first1, InputIterator1 last1, InputIterator2 first2,
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Result const& result, BinaryOperation op,
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typename sprout::container_traits<Result>::size_type size,
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Args const&... args
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)
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{
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return first1 != last1 && sizeof...(Args) < size
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? sprout::fixed::detail::transform_impl(sprout::next(first1), last1, sprout::next(first2), result, op, size, args..., op(*first1, *first2))
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: sprout::detail::container_complate(result, args...)
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;
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}
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template<typename InputIterator1, typename InputIterator2, typename Result, typename BinaryOperation>
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inline SPROUT_CONSTEXPR typename sprout::fixed::result_of::algorithm<Result>::type
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transform(
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InputIterator1 first1, InputIterator1 last1, InputIterator2 first2,
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Result const& result, BinaryOperation op,
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std::input_iterator_tag*
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)
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{
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return sprout::fixed::detail::transform_impl(first1, last1, first2, result, op, sprout::size(result));
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}
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template<typename InputIterator1, typename InputIterator2, typename Result, typename BinaryOperation>
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inline SPROUT_CONSTEXPR typename std::enable_if<
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sprout::is_fixed_container<Result>::value,
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typename sprout::fixed::result_of::algorithm<Result>::type
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>::type
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transform(InputIterator1 first1, InputIterator1 last1, InputIterator2 first2, Result const& result, BinaryOperation op) {
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typedef typename sprout::common_iterator_category<InputIterator1, InputIterator2>::type* category;
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return sprout::fixed::detail::transform(first1, last1, first2, result, op, category());
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}
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template<typename InputIterator1, typename InputIterator2, typename Result, typename BinaryOperation>
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inline SPROUT_CONSTEXPR typename std::enable_if<
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!sprout::is_fixed_container<Result>::value,
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typename sprout::fixed::result_of::algorithm<Result>::type
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>::type
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transform(InputIterator1 first1, InputIterator1 last1, InputIterator2 first2, Result const& result, BinaryOperation op) {
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return sprout::remake<Result>(
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result, sprout::size(result),
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sprout::make_transform_iterator(first1, first2, op),
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sprout::make_transform_iterator(last1, first2, op)
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);
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}
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} // namespace detail
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//
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// transform
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//
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template<typename InputIterator1, typename InputIterator2, typename Result, typename BinaryOperation>
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inline SPROUT_CONSTEXPR typename sprout::fixed::result_of::algorithm<Result>::type
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transform(InputIterator1 first1, InputIterator1 last1, InputIterator2 first2, Result const& result, BinaryOperation op) {
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return sprout::fixed::detail::transform(first1, last1, first2, result, op);
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}
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template<typename Result, typename InputIterator1, typename InputIterator2, typename BinaryOperation>
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inline SPROUT_CONSTEXPR typename sprout::fixed::result_of::algorithm<Result>::type
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transform(InputIterator1 first1, InputIterator1 last1, InputIterator2 first2, BinaryOperation op) {
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return sprout::fixed::transform(first1, last1, first2, sprout::pit<Result>(), op);
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}
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} // namespace fixed
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using sprout::fixed::transform;
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} // namespace sprout
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#endif // #ifndef SPROUT_ALGORITHM_FIXED_TRANSFORM_HPP
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