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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 // suppress 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
+};
+
+// Use boost_test rather than boost as the namespace for this test
+// to allow the test framework to use boost::begin() etc. without
+// violating the One Defintion Rule.
+namespace boost_test
+{
+ 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 );
+ }
+} // 'boost_test'
+
+
+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_test::begin( r ) != boost_namespace );
+ BOOST_CHECK( boost_test::begin( r2 ) != boost_namespace );
+ BOOST_CHECK( boost_test::begin( r3 ) != boost_namespace );
+ BOOST_CHECK( boost_test::begin( r4 ) != boost_namespace );
+ BOOST_CHECK( boost_test::begin( r5 ) != boost_namespace );
+ BOOST_CHECK( boost_test::begin( r6 ) != boost_namespace );
+
+ BOOST_CHECK_EQUAL( boost_test::begin( r ), templated_namespace ) ;
+ BOOST_CHECK_EQUAL( boost_test::begin( r2 ), templated_namespace );
+ BOOST_CHECK_EQUAL( boost_test::begin( r3 ), non_templated_namespace );
+ BOOST_CHECK_EQUAL( boost_test::begin( r4 ), non_templated_namespace );
+ BOOST_CHECK_EQUAL( boost_test::begin( r5 ), global_namespace );
+ BOOST_CHECK_EQUAL( boost_test::begin( r6 ), global_namespace );
+}
+
+#include <boost/test/included/unit_test.hpp>
+
+using boost::unit_test::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;
+}
+
+