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// Boost.Range library
//
// Copyright Thorsten Ottosen 2003-2004. 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/detail/workaround.hpp>
#if BOOST_WORKAROUND(__BORLANDC__, BOOST_TESTED_AT(0x564))
# pragma warn -8091 // supress warning in Boost.Test
# pragma warn -8057 // unused argument argc/argv in Boost.Test
#endif
#include <boost/test/unit_test.hpp>
#include <boost/test/test_tools.hpp>
enum adl_types
{
unused,
boost_namespace,
templated_namespace,
non_templated_namespace,
global_namespace
};
namespace boost
{
namespace range_detail
{
template< class Range >
inline typename Range::iterator begin( Range& r )
{
return boost_namespace;
}
template< class Range >
inline typename Range::iterator begin( const Range& r )
{
return boost_namespace;
}
}
template< class Range >
inline typename Range::iterator begin( Range& r )
{
using range_detail::begin; // create ADL hook
return begin( r );
}
template< class Range >
inline typename Range::iterator begin( const Range& r )
{
using range_detail::begin; // create ADL hook
return begin( r );
}
}
namespace find_templated
{
template< class T >
struct range
{
typedef adl_types iterator;
range() { /* allow const objects */ }
iterator begin() { return unused; }
iterator begin() const { return unused; }
iterator end() { return unused; }
iterator end() const { return unused; }
};
//
// A fully generic version here will create
// ambiguity.
//
template< class T >
inline typename range<T>::iterator begin( range<T>& r )
{
return templated_namespace;
}
template< class T >
inline typename range<T>::iterator begin( const range<T>& r )
{
return templated_namespace;
}
}
namespace find_non_templated
{
struct range
{
typedef adl_types iterator;
range() { /* allow const objects */ }
iterator begin() { return unused; }
iterator begin() const { return unused; }
iterator end() { return unused; }
iterator end() const { return unused; }
};
inline range::iterator begin( range& r )
{
return non_templated_namespace;
}
inline range::iterator begin( const range& r )
{
return non_templated_namespace;
}
}
struct range
{
typedef adl_types iterator;
range() { /* allow const objects */ }
iterator begin() { return unused; }
iterator begin() const { return unused; }
iterator end() { return unused; }
iterator end() const { return unused; }
};
inline range::iterator begin( range& r )
{
return global_namespace;
}
inline range::iterator begin( const range& r )
{
return global_namespace;
}
void check_adl_conformance()
{
find_templated::range<int> r;
const find_templated::range<int> r2;
find_non_templated::range r3;
const find_non_templated::range r4;
range r5;
const range r6;
//
// Notice how ADL kicks in even when we have qualified
// notation!
//
BOOST_CHECK( boost::begin( r ) != boost_namespace );
BOOST_CHECK( boost::begin( r2 ) != boost_namespace );
BOOST_CHECK( boost::begin( r3 ) != boost_namespace );
BOOST_CHECK( boost::begin( r4 ) != boost_namespace );
BOOST_CHECK( boost::begin( r5 ) != boost_namespace );
BOOST_CHECK( boost::begin( r6 ) != boost_namespace );
BOOST_CHECK_EQUAL( boost::begin( r ), templated_namespace ) ;
BOOST_CHECK_EQUAL( boost::begin( r2 ), templated_namespace );
BOOST_CHECK_EQUAL( boost::begin( r3 ), non_templated_namespace );
BOOST_CHECK_EQUAL( boost::begin( r4 ), non_templated_namespace );
BOOST_CHECK_EQUAL( boost::begin( r5 ), global_namespace );
BOOST_CHECK_EQUAL( boost::begin( r6 ), global_namespace );
}
#include <boost/test/included/unit_test_framework.hpp>
using boost::unit_test_framework::test_suite;
test_suite* init_unit_test_suite( int argc, char* argv[] )
{
test_suite* test = BOOST_TEST_SUITE( "Range Test Suite" );
test->add( BOOST_TEST_CASE( &check_adl_conformance ) );
return test;
}
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