1 // Copyright Abel Sinkovics (abel@sinkovics.hu) 2010.
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/metaparse/transform.hpp>
7 #include <boost/metaparse/is_error.hpp>
8 #include <boost/metaparse/start.hpp>
9 #include <boost/metaparse/get_result.hpp>
10 #include <boost/metaparse/repeated.hpp>
11 #include <boost/metaparse/one_char.hpp>
12
13 #include "common.hpp"
14
15 #include <boost/mpl/equal_to.hpp>
16 #include <boost/mpl/always.hpp>
17 #include <boost/mpl/apply_wrap.hpp>
18 #include <boost/mpl/front.hpp>
19 #include <boost/mpl/assert.hpp>
20
21 #include "test_case.hpp"
22
23 namespace
24 {
25 using boost::metaparse::repeated;
26 using boost::metaparse::one_char;
27
28 using boost::mpl::always;
29
30 typedef always<char_x> f;
31 typedef repeated<one_char> repeated_one_char;
32
33 struct get_front
34 {
35 typedef get_front type;
36
37 template <class C>
38 struct apply : boost::mpl::front<C> {};
39 };
40 }
41
BOOST_METAPARSE_TEST_CASE(transform)42 BOOST_METAPARSE_TEST_CASE(transform)
43 {
44 using boost::metaparse::get_result;
45 using boost::metaparse::transform;
46 using boost::metaparse::start;
47 using boost::metaparse::is_error;
48
49 using boost::mpl::equal_to;
50 using boost::mpl::apply_wrap2;
51
52 // test_normal_case
53 BOOST_MPL_ASSERT((
54 equal_to<
55 get_result<apply_wrap2<transform<lit_h, f>, str_hello, start> >::type,
56 char_x
57 >
58 ));
59
60 // test_parser_fails
61 BOOST_MPL_ASSERT((
62 is_error<apply_wrap2<transform<lit_x, f>, str_hello, start> >
63 ));
64
65 // test_empty_input
66 BOOST_MPL_ASSERT((is_error<apply_wrap2<transform<lit_h, f>, str_, start> >));
67
68 // test_tranformation_functions_arg
69 BOOST_MPL_ASSERT((
70 equal_to<
71 get_result<
72 apply_wrap2<transform<repeated_one_char, get_front>, str_hello, start>
73 >::type,
74 char_h
75 >
76 ));
77 }
78
79
80