| /* |
| * Copyright Andrey Semashev 2007 - 2013. |
| * Distributed under 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) |
| */ |
| /*! |
| * \file explicit_operator_bool.cpp |
| * \author Andrey Semashev |
| * \date 17.07.2010 |
| * |
| * \brief This test checks that explicit operator bool can be used in |
| * the valid contexts. |
| */ |
| |
| #define BOOST_TEST_MODULE explicit_operator_bool |
| |
| #include <boost/utility/explicit_operator_bool.hpp> |
| |
| namespace { |
| |
| // A test object that has the operator of explicit conversion to bool |
| struct checkable1 |
| { |
| BOOST_EXPLICIT_OPERATOR_BOOL() |
| bool operator! () const |
| { |
| return false; |
| } |
| }; |
| |
| struct checkable2 |
| { |
| BOOST_CONSTEXPR_EXPLICIT_OPERATOR_BOOL() |
| BOOST_CONSTEXPR bool operator! () const |
| { |
| return false; |
| } |
| }; |
| |
| } // namespace |
| |
| int main(int, char*[]) |
| { |
| checkable1 val1; |
| if (val1) |
| { |
| checkable2 val2; |
| if (val2) |
| return 0; |
| } |
| |
| return 1; |
| } |