mirror of
https://github.com/bolero-MURAKAMI/Sprout.git
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116 lines
3.9 KiB
C++
116 lines
3.9 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 TESTSPR_ALGORITHM_HPP
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#define TESTSPR_ALGORITHM_HPP
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#include <iterator>
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#include <sprout/config.hpp>
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#include <sprout/container.hpp>
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namespace testspr {
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//
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// distance
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//
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template<typename InputIterator>
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inline SPROUT_CONSTEXPR typename std::iterator_traits<InputIterator>::difference_type
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distance(InputIterator first, InputIterator last) {
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return first == last ? 0
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: 1 + testspr::distance(first + 1, last)
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;
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}
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//
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// equal
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//
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template<typename InputIterator1, typename InputIterator2>
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inline SPROUT_CONSTEXPR bool
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equal(InputIterator1 first1, InputIterator1 last1, InputIterator2 first2, InputIterator2 last2) {
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return first1 == last1 ? first2 == last2
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: first2 == last2 ? false
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: !(*first1 == *first2) ? false
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: testspr::equal(first1 + 1, last1, first2 + 1, last2)
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;
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}
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template<typename InputRange1, typename InputRange2>
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inline SPROUT_CONSTEXPR bool
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equal(InputRange1 const& range1, InputRange2 const& range2) {
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return testspr::equal(sprout::begin(range1), sprout::end(range1), sprout::begin(range2), sprout::end(range2));
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}
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//
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// is_found
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//
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template<class InputIterator, typename T>
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inline SPROUT_CONSTEXPR bool
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is_found(InputIterator first, InputIterator last, T const& value) {
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return first == last ? false
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: *first == value ? true
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: testspr::is_found(first + 1, last, value)
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;
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}
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template<typename InputRange, typename T>
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inline SPROUT_CONSTEXPR bool
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is_found(InputRange const& range, T const& value) {
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return testspr::is_found(sprout::begin(range), sprout::end(range), value);
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}
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//
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// count
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//
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template<typename InputIterator, typename T>
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inline SPROUT_CONSTEXPR typename std::iterator_traits<InputIterator>::difference_type
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count(InputIterator first, InputIterator last, T const& value) {
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return first == last ? 0
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: (*first == value ? 1 : 0) + testspr::count(first + 1, last, value)
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;
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}
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template<typename InputRange, typename T>
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inline SPROUT_CONSTEXPR typename std::iterator_traits<typename InputRange::const_iterator>::difference_type
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count(InputRange const& range, T const& value) {
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return testspr::count(sprout::begin(range), sprout::end(range), value);
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}
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namespace detail {
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template<typename ForwardIterator1, typename ForwardIterator2>
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inline SPROUT_CONSTEXPR bool
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is_permutation_impl(
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ForwardIterator1 first1, ForwardIterator1 last1,
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ForwardIterator2 first2, ForwardIterator2 last2,
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ForwardIterator1 first1_, ForwardIterator2 first2_
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)
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{
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return first1_ == last1 && first2_ == last2 ? true
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: testspr::count(first1, last1, *first1_) != testspr::count(first2, first2 + testspr::distance(first1, last1), *first1_)
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? false
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: testspr::detail::is_permutation_impl(first1, last1, first2, last2, first1_ + 1, first2_ + 1)
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;
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}
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} // namespace detail
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//
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// is_permutation
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//
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template<typename ForwardIterator1, typename ForwardIterator2>
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inline SPROUT_CONSTEXPR bool
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is_permutation(
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ForwardIterator1 first1, ForwardIterator1 last1,
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ForwardIterator2 first2, ForwardIterator2 last2
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)
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{
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return testspr::detail::is_permutation_impl(first1, last1, first2, last2, first1, first2);
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}
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template<typename ForwardRange1, typename ForwardRange2>
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inline SPROUT_CONSTEXPR bool
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is_permutation(ForwardRange1 const& range1, ForwardRange2 const& range2) {
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return testspr::is_permutation(
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sprout::begin(range1), sprout::end(range1),
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sprout::begin(range2), sprout::end(range2)
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);
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}
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} // namespace testspr
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#endif // #ifndef TESTSPR_ALGORITHM_HPP
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