229 lines
8.6 KiB
C++
229 lines
8.6 KiB
C++
// (C) Copyright Gennadiy Rozental 2004-2008.
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// Distributed under the Boost Software License, Version 1.0.
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// (See accompanying file LICENSE_1_0.txt or copy at
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// http://www.boost.org/LICENSE_1_0.txt)
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// See http://www.boost.org/libs/test for the library home page.
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//
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// File : $RCSfile$
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//
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// Version : $Revision: 49312 $
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//
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// Description : addition to STL algorithms
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// ***************************************************************************
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#ifndef BOOST_ALGORITHM_HPP_062304GER
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#define BOOST_ALGORITHM_HPP_062304GER
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#include <utility>
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#include <algorithm> // std::find
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#include <functional> // std::bind1st
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#include <boost/test/detail/suppress_warnings.hpp>
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//____________________________________________________________________________//
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namespace boost {
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namespace unit_test {
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/// @brief this algorithm search through two collections for first mismatch position that get returned as a pair
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/// of iterators, first pointing to the mismatch position in first collection, second iterator in second one
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/// @param first1 - first collection begin iterator
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/// @param last1 - first collection end iterator
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/// @param first2 - second collection begin iterator
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/// @param last2 - second collection end iterator
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template <class InputIter1, class InputIter2>
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inline std::pair<InputIter1, InputIter2>
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mismatch( InputIter1 first1, InputIter1 last1,
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InputIter2 first2, InputIter2 last2 )
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{
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while( first1 != last1 && first2 != last2 && *first1 == *first2 ) {
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++first1;
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++first2;
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}
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return std::pair<InputIter1, InputIter2>(first1, first2);
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}
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//____________________________________________________________________________//
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/// @brief this algorithm search through two collections for first mismatch position that get returned as a pair
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/// of iterators, first pointing to the mismatch position in first collection, second iterator in second one. This algorithms
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/// uses supplied predicate for collection elements comparison
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/// @param first1 - first collection begin iterator
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/// @param last1 - first collection end iterator
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/// @param first2 - second collection begin iterator
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/// @param last2 - second collection end iterator
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/// @param pred - predicate to be used for search
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template <class InputIter1, class InputIter2, class Predicate>
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inline std::pair<InputIter1, InputIter2>
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mismatch( InputIter1 first1, InputIter1 last1,
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InputIter2 first2, InputIter2 last2,
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Predicate pred )
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{
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while( first1 != last1 && first2 != last2 && pred( *first1, *first2 ) ) {
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++first1;
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++first2;
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}
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return std::pair<InputIter1, InputIter2>(first1, first2);
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}
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//____________________________________________________________________________//
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/// @brief this algorithm search through first collection for first element that does not belong a second one
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/// @param first1 - first collection begin iterator
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/// @param last1 - first collection end iterator
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/// @param first2 - second collection begin iterator
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/// @param last2 - second collection end iterator
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template<class ForwardIterator1, class ForwardIterator2>
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inline ForwardIterator1
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find_first_not_of( ForwardIterator1 first1, ForwardIterator1 last1,
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ForwardIterator2 first2, ForwardIterator2 last2 )
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{
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while( first1 != last1 ) {
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if( std::find( first2, last2, *first1 ) == last2 )
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break;
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++first1;
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}
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return first1;
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}
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//____________________________________________________________________________//
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/// @brief this algorithm search through first collection for first element that does not satisfy binary
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/// predicate in conjunction will any element in second collection
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/// @param first1 - first collection begin iterator
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/// @param last1 - first collection end iterator
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/// @param first2 - second collection begin iterator
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/// @param last2 - second collection end iterator
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/// @param pred - predicate to be used for search
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template<class ForwardIterator1, class ForwardIterator2, class Predicate>
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inline ForwardIterator1
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find_first_not_of( ForwardIterator1 first1, ForwardIterator1 last1,
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ForwardIterator2 first2, ForwardIterator2 last2,
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Predicate pred )
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{
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while( first1 != last1 ) {
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if( std::find_if( first2, last2, std::bind1st( pred, *first1 ) ) == last2 )
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break;
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++first1;
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}
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return first1;
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}
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//____________________________________________________________________________//
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/// @brief this algorithm search through first collection for last element that belongs to a second one
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/// @param first1 - first collection begin iterator
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/// @param last1 - first collection end iterator
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/// @param first2 - second collection begin iterator
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/// @param last2 - second collection end iterator
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template<class BidirectionalIterator1, class ForwardIterator2>
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inline BidirectionalIterator1
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find_last_of( BidirectionalIterator1 first1, BidirectionalIterator1 last1,
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ForwardIterator2 first2, ForwardIterator2 last2 )
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{
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if( first1 == last1 || first2 == last2 )
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return last1;
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BidirectionalIterator1 it1 = last1;
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while( --it1 != first1 && std::find( first2, last2, *it1 ) == last2 ) {}
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return it1 == first1 && std::find( first2, last2, *it1 ) == last2 ? last1 : it1;
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}
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//____________________________________________________________________________//
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/// @brief this algorithm search through first collection for last element that satisfy binary
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/// predicate in conjunction will at least one element in second collection
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/// @param first1 - first collection begin iterator
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/// @param last1 - first collection end iterator
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/// @param first2 - second collection begin iterator
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/// @param last2 - second collection end iterator
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/// @param pred - predicate to be used for search
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template<class BidirectionalIterator1, class ForwardIterator2, class Predicate>
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inline BidirectionalIterator1
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find_last_of( BidirectionalIterator1 first1, BidirectionalIterator1 last1,
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ForwardIterator2 first2, ForwardIterator2 last2,
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Predicate pred )
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{
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if( first1 == last1 || first2 == last2 )
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return last1;
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BidirectionalIterator1 it1 = last1;
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while( --it1 != first1 && std::find_if( first2, last2, std::bind1st( pred, *it1 ) ) == last2 ) {}
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return it1 == first1 && std::find_if( first2, last2, std::bind1st( pred, *it1 ) ) == last2 ? last1 : it1;
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}
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//____________________________________________________________________________//
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/// @brief this algorithm search through first collection for last element that does not belong to a second one
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/// @param first1 - first collection begin iterator
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/// @param last1 - first collection end iterator
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/// @param first2 - second collection begin iterator
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/// @param last2 - second collection end iterator
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template<class BidirectionalIterator1, class ForwardIterator2>
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inline BidirectionalIterator1
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find_last_not_of( BidirectionalIterator1 first1, BidirectionalIterator1 last1,
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ForwardIterator2 first2, ForwardIterator2 last2 )
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{
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if( first1 == last1 || first2 == last2 )
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return last1;
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BidirectionalIterator1 it1 = last1;
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while( --it1 != first1 && std::find( first2, last2, *it1 ) != last2 ) {}
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return it1 == first1 && std::find( first2, last2, *it1 ) != last2 ? last1 : it1;
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}
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//____________________________________________________________________________//
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/// @brief this algorithm search through first collection for last element that does not satisfy binary
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/// predicate in conjunction will any element in second collection
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/// @param first1 - first collection begin iterator
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/// @param last1 - first collection end iterator
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/// @param first2 - second collection begin iterator
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/// @param last2 - second collection end iterator
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/// @param pred - predicate to be used for search
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template<class BidirectionalIterator1, class ForwardIterator2, class Predicate>
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inline BidirectionalIterator1
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find_last_not_of( BidirectionalIterator1 first1, BidirectionalIterator1 last1,
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ForwardIterator2 first2, ForwardIterator2 last2,
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Predicate pred )
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{
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if( first1 == last1 || first2 == last2 )
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return last1;
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BidirectionalIterator1 it1 = last1;
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while( --it1 != first1 && std::find_if( first2, last2, std::bind1st( pred, *it1 ) ) != last2 ) {}
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return it1 == first1 && std::find_if( first2, last2, std::bind1st( pred, *it1 ) ) == last2 ? last1 : it1;
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}
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//____________________________________________________________________________//
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} // namespace unit_test
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} // namespace boost
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//____________________________________________________________________________//
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#include <boost/test/detail/enable_warnings.hpp>
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#endif // BOOST_ALGORITHM_HPP_062304GER
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