| // Copyright (C) 2014 Andrzej Krzemienski. |
| // |
| // 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) |
| // |
| // See http://www.boost.org/lib/optional for documentation. |
| // |
| // You are welcome to contact the author at: |
| // akrzemi1@gmail.com |
| |
| #include "boost/optional/optional.hpp" |
| |
| #ifdef BOOST_BORLANDC |
| #pragma hdrstop |
| #endif |
| |
| using boost::optional; |
| |
| #if (!defined BOOST_OPTIONAL_DETAIL_NO_IS_CONSTRUCTIBLE_TRAIT) |
| |
| struct X {}; |
| struct Y {}; |
| |
| struct Resource |
| { |
| explicit Resource(const X&) {} |
| }; |
| |
| BOOST_STATIC_ASSERT(( boost::is_constructible<Resource, const X&>::value )); |
| BOOST_STATIC_ASSERT(( !boost::is_constructible<Resource, const Y&>::value )); |
| |
| BOOST_STATIC_ASSERT(( boost::is_constructible<optional<Resource>, const X&>::value )); |
| BOOST_STATIC_ASSERT(( !boost::is_constructible<optional<Resource>, const Y&>::value )); |
| |
| #ifndef BOOST_OPTIONAL_DETAIL_NO_SFINAE_FRIENDLY_CONSTRUCTORS |
| BOOST_STATIC_ASSERT(( boost::is_constructible< optional< optional<int> >, optional<int> >::value )); |
| BOOST_STATIC_ASSERT(( !boost::is_constructible< optional<int>, optional< optional<int> > >::value )); |
| |
| BOOST_STATIC_ASSERT(( boost::is_constructible< optional< optional<int> >, const optional<int>& >::value )); |
| BOOST_STATIC_ASSERT(( !boost::is_constructible< optional<int>, const optional< optional<int> >& >::value )); |
| |
| BOOST_STATIC_ASSERT(( boost::is_constructible<optional<Resource>, const optional<X>&>::value )); |
| BOOST_STATIC_ASSERT(( !boost::is_constructible<optional<Resource>, const optional<Y>&>::value )); |
| #endif |
| |
| #endif |
| |
| int main() { } |