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// Copyright 2017, 2022 Peter Dimov.
// Distributed under the Boost Software License, Version 1.0.
// https://www.boost.org/LICENSE_1_0.txt
#if defined(__clang__)
# pragma clang diagnostic ignored "-Wmismatched-tags"
#endif
#include <boost/container_hash/is_tuple_like.hpp>
#include <boost/core/lightweight_test_trait.hpp>
#include <boost/config.hpp>
#include <boost/config/workaround.hpp>
#include <utility>
struct X
{
};
#if !defined(BOOST_NO_CXX11_HDR_TUPLE)
#include <tuple>
namespace user
{
struct Y
{
int a;
int b;
};
template<std::size_t I> int& get( Y& v );
template<std::size_t I> int const& get( Y const& v );
template<> int& get<0>( Y& v )
{
return v.a;
}
template<> int const& get<0>( Y const& v )
{
return v.a;
}
template<> int& get<1>( Y& v )
{
return v.b;
}
template<> int const& get<1>( Y const& v )
{
return v.b;
}
} // namespace user
namespace std
{
template<> struct tuple_size<user::Y>: std::integral_constant<std::size_t, 2>
{
};
} // namespace std
#endif // #if !defined(BOOST_NO_CXX11_HDR_TUPLE)
int main()
{
using boost::container_hash::is_tuple_like;
BOOST_TEST_TRAIT_FALSE((is_tuple_like<void>));
BOOST_TEST_TRAIT_FALSE((is_tuple_like<void const>));
BOOST_TEST_TRAIT_FALSE((is_tuple_like<int>));
BOOST_TEST_TRAIT_FALSE((is_tuple_like<int const>));
BOOST_TEST_TRAIT_FALSE((is_tuple_like<X>));
BOOST_TEST_TRAIT_FALSE((is_tuple_like<X const>));
BOOST_TEST_TRAIT_FALSE((is_tuple_like<int[2]>));
BOOST_TEST_TRAIT_FALSE((is_tuple_like<int const [2]>));
#if !defined(BOOST_NO_CXX11_HDR_TUPLE) && !BOOST_WORKAROUND(BOOST_MSVC, <= 1800)
BOOST_TEST_TRAIT_TRUE((is_tuple_like< std::pair<int, X> >));
BOOST_TEST_TRAIT_TRUE((is_tuple_like< std::pair<int, X> const>));
BOOST_TEST_TRAIT_TRUE((is_tuple_like< std::tuple<> >));
BOOST_TEST_TRAIT_TRUE((is_tuple_like< std::tuple<> const>));
BOOST_TEST_TRAIT_TRUE((is_tuple_like< std::tuple<X> >));
BOOST_TEST_TRAIT_TRUE((is_tuple_like< std::tuple<X> const>));
BOOST_TEST_TRAIT_TRUE((is_tuple_like< std::tuple<X, X> >));
BOOST_TEST_TRAIT_TRUE((is_tuple_like< std::tuple<X, X> const>));
BOOST_TEST_TRAIT_TRUE((is_tuple_like< std::tuple<X, X, X> >));
BOOST_TEST_TRAIT_TRUE((is_tuple_like< std::tuple<X, X, X> const>));
BOOST_TEST_TRAIT_TRUE((is_tuple_like<user::Y>));
BOOST_TEST_TRAIT_TRUE((is_tuple_like<user::Y const>));
#endif
return boost::report_errors();
}
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