1 /*=============================================================================
2 Copyright (c) 2001-2015 Joel de Guzman
3
4 Distributed under the Boost Software License, Version 1.0. (See accompanying
5 file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
6 =============================================================================*/
7 #include <boost/detail/lightweight_test.hpp>
8 #include <boost/spirit/home/x3.hpp>
9
10 #include <iostream>
11 #include "test.hpp"
12
13 int
main()14 main()
15 {
16 using spirit_test::test;
17 using boost::spirit::x3::eps;
18 using boost::spirit::x3::unused_type;
19
20 {
21 BOOST_TEST((test("", eps)));
22 BOOST_TEST((test("xxx", eps, false)));
23 //~ BOOST_TEST((!test("", !eps))); // not predicate $$$ Implement me! $$$
24 }
25
26 { // test non-lazy semantic predicate
27
28 BOOST_TEST((test("", eps(true))));
29 BOOST_TEST((!test("", eps(false))));
30 BOOST_TEST((test("", !eps(false))));
31 }
32
33 { // test lazy semantic predicate
34
35 auto true_ = [](unused_type) { return true; };
36 auto false_ = [](unused_type) { return false; };
37
38 BOOST_TEST((test("", eps(true_))));
39 BOOST_TEST((!test("", eps(false_))));
40 BOOST_TEST((test("", !eps(false_))));
41 }
42
43 return boost::report_errors();
44 }
45