3 // Copyright Neil Groves 2009. Use, modification and
4 // distribution is subject to the Boost Software License, Version
5 // 1.0. (See accompanying file LICENSE_1_0.txt or copy at
6 // http://www.boost.org/LICENSE_1_0.txt)
9 // For more information, see http://www.boost.org/libs/range/
14 #include <boost/config.hpp>
17 #include <boost/range/adaptor/indexed.hpp>
18 #include <boost/assign.hpp>
24 #include <boost/test/test_tools.hpp>
25 #include <boost/test/unit_test.hpp>
30 template<class Iterator1, class Iterator2>
31 void check_element_and_index(
34 Iterator2 reference_first,
35 Iterator2 reference_last)
37 BOOST_CHECK_EQUAL( std::distance(test_first, test_last),
38 std::distance(reference_first, reference_last) );
40 std::ptrdiff_t reference_index = 0;
42 Iterator1 test_it = test_first;
43 Iterator2 reference_it = reference_first;
44 for (; test_it != test_last; ++test_it, ++reference_it, ++reference_index)
46 BOOST_CHECK_EQUAL(test_it->value(), *reference_it);
47 BOOST_CHECK_EQUAL(test_it->index(), reference_index);
51 template<class SinglePassRange1, class SinglePassRange2>
52 void check_element_and_index(
53 const SinglePassRange1& test_rng,
54 const SinglePassRange2& reference_rng)
56 check_element_and_index(
57 boost::begin(test_rng), boost::end(test_rng),
58 boost::begin(reference_rng), boost::end(reference_rng));
63 void indexed_example_test()
65 //=int main(int argc, const char* argv[])
67 using namespace boost::assign;
68 using namespace boost::adaptors;
70 std::vector<int> input;
71 input += 10,20,30,40,50,60,70,80,90;
74 #ifndef BOOST_NO_CXX11_RANGE_BASED_FOR
76 for (const auto& element : input | indexed(0))
78 std::cout << "Element = " << element.value()
79 << " Index = " << element.index()
83 #endif // C++11 has range for loop
89 check_element_and_index(
95 boost::unit_test::test_suite*
96 init_unit_test_suite(int argc, char* argv[])
98 boost::unit_test::test_suite* test
99 = BOOST_TEST_SUITE( "RangeTestSuite.adaptor.indexed_example" );
101 test->add( BOOST_TEST_CASE( &indexed_example_test ) );