boost/libs/phoenix/test/scope/more_lambda_tests.cpp

/*=============================================================================
    Copyright (c) 2014 John Fletcher

    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)
==============================================================================*/

#include <boost/detail/lightweight_test.hpp>

#include <boost/phoenix/core.hpp>
#include <boost/phoenix/operator.hpp>
#include <boost/phoenix/function.hpp>
#include <boost/phoenix/bind.hpp>
#include <boost/phoenix/scope.hpp>


int
main()
{
    using boost::phoenix::lambda;
    using boost::phoenix::let;
    using boost::phoenix::ref;
    using boost::phoenix::val;
    using boost::phoenix::arg_names::_1;
    //using boost::phoenix::arg_names::_2;
    using boost::phoenix::local_names::_a;
    // using boost::phoenix::local_names::_b;
    //using boost::phoenix::placeholders::arg1;

    {
        int x = 1;
        int y = lambda[_1]()(x);
        BOOST_TEST(x == y);
    }

    {
        int x = 1;
        int y = lambda(_a = _1)[_a+1](x)();
        BOOST_TEST(x+1 == y);
    }

    {
        int x = lambda[val(1)]()();
        BOOST_TEST(x == 1);
    }

    return boost::report_errors();
}