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331 lines
10 KiB
C++
331 lines
10 KiB
C++
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// Boost.Range library
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//
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// Copyright Thorsten Ottosen & Larry Evans 2003-2005. 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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// For more information, see http://www.boost.org/libs/range/
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//
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//#include <boost/range/as_array.hpp>
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#include <boost/detail/workaround.hpp>
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#if BOOST_WORKAROUND(__BORLANDC__, BOOST_TESTED_AT(0x564))
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# pragma warn -8091 // suppress warning in Boost.Test
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# pragma warn -8057 // unused argument argc/argv in Boost.Test
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#endif
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#include <boost/range/iterator_range.hpp>
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#include <boost/range/functions.hpp>
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#include <boost/range/as_literal.hpp>
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#include <boost/cstdint.hpp>
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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 <iostream>
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#include <string>
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#include <vector>
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void check_reference_type();
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void check_iterator_range()
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{
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typedef std::string::iterator iterator;
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typedef std::string::const_iterator const_iterator;
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typedef boost::iterator_range<iterator> irange;
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typedef boost::iterator_range<const_iterator> cirange;
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std::string str = "hello world";
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const std::string cstr = "const world";
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irange r = boost::make_iterator_range( str );
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r = boost::make_iterator_range( str.begin(), str.end() );
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cirange r2 = boost::make_iterator_range( cstr );
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r2 = boost::make_iterator_range( cstr.begin(), cstr.end() );
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r2 = boost::make_iterator_range( str );
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BOOST_CHECK( !r.empty() );
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BOOST_CHECK( !r2.empty() );
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//#if BOOST_WORKAROUND(__BORLANDC__, BOOST_TESTED_AT(0x564))
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// if( !(bool)r )
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// BOOST_CHECK( false );
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// if( !(bool)r2 )
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// BOOST_CHECK( false );
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//#else
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if( !r )
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BOOST_CHECK( false );
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if( !r2 )
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BOOST_CHECK( false );
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//#endif
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BOOST_CHECK_EQUAL( r.size(), boost::size( r ) );
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BOOST_CHECK_EQUAL( r2.size(), boost::size( r2 ) );
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BOOST_CHECK_EQUAL( std::distance( r.begin(), r.end() ),
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std::distance( boost::begin( r2 ), boost::end( r2 ) ) );
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std::cout << r << r2;
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#ifndef BOOST_NO_STD_WSTRING
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std::wcout << boost::make_iterator_range( std::wstring( L"a wide string" ) )
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<< boost::make_iterator_range( L"another wide string" );
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#endif
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std::string res = boost::copy_range<std::string>( r );
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BOOST_CHECK_EQUAL_COLLECTIONS( res.begin(), res.end(), r.begin(), r.end() );
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irange rr = boost::make_iterator_range( str );
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BOOST_CHECK( rr.equal( r ) );
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rr = boost::make_iterator_range( str.begin(), str.begin() + 5 );
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BOOST_CHECK( rr == boost::as_literal("hello") );
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BOOST_CHECK( rr != boost::as_literal("hell") );
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BOOST_CHECK( rr < boost::as_literal("hello dude") );
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BOOST_CHECK( boost::as_literal("hello") == rr );
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BOOST_CHECK( boost::as_literal("hell") != rr );
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BOOST_CHECK( ! (boost::as_literal("hello dude") < rr ) );
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irange rrr = rr;
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BOOST_CHECK( rrr == rr );
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BOOST_CHECK( !( rrr != rr ) );
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BOOST_CHECK( !( rrr < rr ) );
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const irange cr = boost::make_iterator_range( str );
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BOOST_CHECK_EQUAL( cr.front(), 'h' );
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BOOST_CHECK_EQUAL( cr.back(), 'd' );
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BOOST_CHECK_EQUAL( cr[1], 'e' );
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BOOST_CHECK_EQUAL( cr(1), 'e' );
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rrr = boost::make_iterator_range( str, 1, -1 );
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BOOST_CHECK( rrr == boost::as_literal("ello worl") );
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rrr = boost::make_iterator_range( rrr, -1, 1 );
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BOOST_CHECK( rrr == str );
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check_reference_type();
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// Check that an iterator range can be instantiated with
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// a pointer to an array as an iterator.
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int arr[2][2];
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boost::make_iterator_range(arr, arr + 2);
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}
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namespace iterator_range_test_detail
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{
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struct less
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{
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template< class Left, class Right >
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bool operator()(const Left& l, const Right& r) const
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{
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return l < r;
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}
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};
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struct greater
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{
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template< class Left, class Right >
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bool operator()(const Left& l, const Right& r) const
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{
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return l > r;
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}
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};
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struct less_or_equal
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{
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template< class Left, class Right >
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bool operator()(const Left& l, const Right& r) const
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{
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return l <= r;
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}
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};
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struct greater_or_equal
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{
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template< class Left, class Right >
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bool operator()(const Left& l, const Right& r) const
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{
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return l >= r;
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}
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};
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struct equal_to
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{
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template< class Left, class Right >
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bool operator()(const Left& l, const Right& r) const
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{
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return l == r;
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}
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};
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struct not_equal_to
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{
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template< class Left, class Right >
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bool operator()(const Left& l, const Right& r) const
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{
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return l != r;
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}
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};
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template< class Pred >
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void check_iterator_range_operators_impl(Pred pred)
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{
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std::vector<std::string> vals;
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vals.push_back(std::string());
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vals.push_back("a");
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vals.push_back("b");
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vals.push_back("z");
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vals.push_back("ab");
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vals.push_back("ba");
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vals.push_back("abc");
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vals.push_back("cba");
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vals.push_back("aa");
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vals.push_back("aaa");
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vals.push_back("aab");
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vals.push_back("bba");
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typedef std::string::const_iterator citer;
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typedef boost::iterator_range<citer> iter_range;
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typedef std::vector<std::string>::const_iterator value_const_iterator;
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value_const_iterator first_val = vals.begin();
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value_const_iterator last_val = vals.end();
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for (value_const_iterator left_it = first_val; left_it != last_val; ++left_it)
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{
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const std::string& leftValue = *left_it;
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for (value_const_iterator right_it = first_val; right_it != last_val; ++right_it)
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{
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const std::string& rightValue = *right_it;
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iter_range left = boost::make_iterator_range(leftValue);
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iter_range right = boost::make_iterator_range(rightValue);
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const bool reference = pred(leftValue, rightValue);
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BOOST_CHECK_EQUAL( pred(left, right), reference );
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BOOST_CHECK_EQUAL( pred(left, rightValue), reference );
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BOOST_CHECK_EQUAL( pred(leftValue, right), reference );
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}
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}
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}
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void check_iterator_range_from_array()
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{
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double source[] = { 0.0, 1.0, 2.0, 3.0, 4.0, 5.0 };
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boost::iterator_range<double*> rng = boost::make_iterator_range(source);
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BOOST_CHECK_EQUAL_COLLECTIONS( rng.begin(), rng.end(),
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source, source + 6 );
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}
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void check_make_iterator_range_n()
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{
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using boost::uint32_t;
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std::vector<uint32_t> input;
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for (uint32_t i = 0; i < 10u; ++i)
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input.push_back(i);
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boost::iterator_range<std::vector<uint32_t>::iterator> rng =
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boost::make_iterator_range_n(boost::begin(input), 8u);
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BOOST_CHECK(rng.begin() == input.begin());
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BOOST_CHECK(rng.end() == input.begin() + 8);
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BOOST_CHECK_EQUAL(rng.size(), 8u);
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const std::vector<uint32_t>& cinput = input;
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boost::iterator_range<std::vector<uint32_t>::const_iterator> crng =
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boost::make_iterator_range_n(boost::begin(cinput), 8u);
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BOOST_CHECK(crng.begin() == cinput.begin());
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BOOST_CHECK(crng.end() == cinput.begin() + 8);
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BOOST_CHECK_EQUAL(crng.size(), 8u);
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}
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} // namespace iterator_range_test_detail
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template<typename Pred>
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inline void check_iterator_range_operator()
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{
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iterator_range_test_detail::check_iterator_range_operators_impl(
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Pred());
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}
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inline void test_advance()
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{
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std::vector<int> l;
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l.push_back(1);
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l.push_back(2);
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typedef boost::iterator_range<std::vector<int>::iterator> rng_t;
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rng_t r1(l.begin(), l.end());
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BOOST_CHECK(r1.advance_begin(1).advance_end(-1).empty());
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rng_t r2(l.begin(), l.end());
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BOOST_CHECK_EQUAL(r2.advance_begin(1).size(), 1u);
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rng_t r3(l.begin(), l.end());
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BOOST_CHECK_EQUAL(r3.advance_end(-1).size(), 1u);
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}
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struct ptr_iterator
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: boost::iterator_adaptor<ptr_iterator, int *>
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{
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ptr_iterator() {}
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ptr_iterator(int *p) : boost::iterator_adaptor<ptr_iterator, int *>(p) {}
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private:
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typedef void iterator; // To throw off the SFINAE mechanism in iterator_range
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};
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void test_sfinae()
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{
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boost::iterator_range<ptr_iterator> r(ptr_iterator(0), ptr_iterator(0));
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}
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//
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//
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// Check that constness is propagated correct from
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// the iterator types.
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//
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// Test contributed by Larry Evans.
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//
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template< class Container >
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int test_iter_range( Container& a_cont )
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{
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typedef BOOST_DEDUCED_TYPENAME boost::range_iterator<Container>::type citer_type;
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typedef boost::iterator_range<citer_type> riter_type;
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riter_type a_riter( boost::make_iterator_range( a_cont ) );
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a_riter.front();
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a_riter.back();
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int i = a_riter[0];
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return i;
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}
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void check_reference_type()
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{
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typedef std::vector<int> veci_type;
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veci_type a_vec;
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a_vec.push_back( 999 );
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test_iter_range<veci_type>(a_vec);
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test_iter_range<veci_type const>(a_vec);
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}
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boost::unit_test::test_suite* init_unit_test_suite( int argc, char* argv[] )
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{
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boost::unit_test::test_suite* test = BOOST_TEST_SUITE( "Range Test Suite" );
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test->add(BOOST_TEST_CASE(&check_iterator_range));
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test->add(BOOST_TEST_CASE(&check_iterator_range_operator<iterator_range_test_detail::less>));
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test->add(BOOST_TEST_CASE(&check_iterator_range_operator<iterator_range_test_detail::less_or_equal>));
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test->add(BOOST_TEST_CASE(&check_iterator_range_operator<iterator_range_test_detail::greater>));
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test->add(BOOST_TEST_CASE(&check_iterator_range_operator<iterator_range_test_detail::greater_or_equal>));
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test->add(BOOST_TEST_CASE(&check_iterator_range_operator<iterator_range_test_detail::equal_to>));
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test->add(BOOST_TEST_CASE(&check_iterator_range_operator<iterator_range_test_detail::not_equal_to>));
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test->add(BOOST_TEST_CASE(&iterator_range_test_detail::check_make_iterator_range_n));
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test->add(BOOST_TEST_CASE(&test_advance));
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return test;
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}
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