// Boost.Range library // // Copyright Neil Groves 2009. Use, modification and // distribution is subject to the Boost Software License, Version // 1.0. (See accompanying file LICENSE_1_0.txt or copy at // http://www.boost.org/LICENSE_1_0.txt) // // // For more information, see http://www.boost.org/libs/range/ // #include <boost/range/adaptor/indexed.hpp> #include <boost/range/algorithm/copy.hpp> #include <boost/assign.hpp> #include <algorithm> #include <iostream> #include <vector> #include <boost/test/test_tools.hpp> #include <boost/test/unit_test.hpp> #include <boost/range/algorithm_ext/push_back.hpp> namespace { template<class Iterator> void display_element_and_index(Iterator first, Iterator last) { for (Iterator it = first; it != last; ++it) { std::cout << "Element = " << *it << " Index = " << it.index() << std::endl; } } template<class SinglePassRange> void display_element_and_index(const SinglePassRange& rng) { display_element_and_index(boost::begin(rng), boost::end(rng)); } template<class Iterator1, class Iterator2> void check_element_and_index( Iterator1 test_first, Iterator1 test_last, Iterator2 reference_first, Iterator2 reference_last) { BOOST_CHECK_EQUAL( std::distance(test_first, test_last), std::distance(reference_first, reference_last) ); int reference_index = 0; Iterator1 test_it = test_first; Iterator2 reference_it = reference_first; for (; test_it != test_last; ++test_it, ++reference_it, ++reference_index) { BOOST_CHECK_EQUAL( *test_it, *reference_it ); BOOST_CHECK_EQUAL( test_it.index(), reference_index ); } } template<class SinglePassRange1, class SinglePassRange2> void check_element_and_index( const SinglePassRange1& test_rng, const SinglePassRange2& reference_rng) { check_element_and_index(boost::begin(test_rng), boost::end(test_rng), boost::begin(reference_rng), boost::end(reference_rng)); } void indexed_example_test() { using namespace boost::assign; using namespace boost::adaptors; std::vector<int> input; input += 10,20,30,40,50,60,70,80,90; display_element_and_index( input | indexed(0) ); check_element_and_index( input | indexed(0), input); } } boost::unit_test::test_suite* init_unit_test_suite(int argc, char* argv[]) { boost::unit_test::test_suite* test = BOOST_TEST_SUITE( "RangeTestSuite.adaptor.indexed_example" ); test->add( BOOST_TEST_CASE( &indexed_example_test ) ); return test; }