| 1 | // Copyright Daniel Wallin 2006. |
|---|---|
| 2 | // Distributed under the Boost Software License, Version 1.0. |
| 3 | // (See accompanying file LICENSE_1_0.txt or copy at |
| 4 | // http://www.boost.org/LICENSE_1_0.txt) |
| 5 | |
| 6 | #include <boost/parameter/name.hpp> |
| 7 | |
| 8 | namespace test { |
| 9 | |
| 10 | BOOST_PARAMETER_NAME(kw) |
| 11 | BOOST_PARAMETER_NAME(unused) |
| 12 | |
| 13 | template <typename Args> |
| 14 | int f(Args const& args) |
| 15 | { |
| 16 | return args[test::_kw | 1.f]; |
| 17 | } |
| 18 | } // namespace test |
| 19 | |
| 20 | #include <boost/parameter/aux_/maybe.hpp> |
| 21 | #include <boost/core/lightweight_test.hpp> |
| 22 | |
| 23 | int main() |
| 24 | { |
| 25 | BOOST_TEST_EQ(0, test::f((test::_kw = 0, test::_unused = 0))); |
| 26 | BOOST_TEST_EQ(1, test::f(test::_unused = 0)); |
| 27 | BOOST_TEST_EQ( |
| 28 | 1 |
| 29 | , test::f(( |
| 30 | test::_kw = boost::parameter::aux::maybe<int>() |
| 31 | , test::_unused = 0 |
| 32 | )) |
| 33 | ); |
| 34 | BOOST_TEST_EQ( |
| 35 | 2 |
| 36 | , test::f(( |
| 37 | test::_kw = boost::parameter::aux::maybe<int>(2) |
| 38 | , test::_unused = 0 |
| 39 | )) |
| 40 | ); |
| 41 | return boost::report_errors(); |
| 42 | } |
| 43 | |
| 44 |