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