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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 | #include <boost/fusion/adapted/struct.hpp> | |
10 | #include <boost/fusion/include/vector.hpp> | |
11 | ||
12 | #include <iostream> | |
13 | #include "test.hpp" | |
14 | ||
15 | struct adata | |
16 | { | |
17 | int a; | |
18 | boost::optional<int> b; | |
19 | }; | |
20 | ||
21 | BOOST_FUSION_ADAPT_STRUCT(adata, | |
22 | a, b | |
23 | ) | |
24 | ||
25 | struct test_attribute_type | |
26 | { | |
27 | template <typename Context> | |
28 | void operator()(Context& ctx) const | |
29 | { | |
30 | BOOST_TEST(typeid(decltype(_attr(ctx))).name() == typeid(boost::optional<int>).name()); | |
31 | } | |
32 | }; | |
33 | ||
34 | int | |
35 | main() | |
36 | { | |
11fdf7f2 TL |
37 | using boost::spirit::x3::traits::is_optional; |
38 | ||
39 | static_assert(is_optional<boost::optional<int>>(), "is_optional problem"); | |
40 | ||
7c673cae FG |
41 | using spirit_test::test; |
42 | using spirit_test::test_attr; | |
43 | ||
44 | using boost::spirit::x3::int_; | |
45 | using boost::spirit::x3::omit; | |
46 | using boost::spirit::x3::ascii::char_; | |
47 | ||
48 | { | |
49 | BOOST_TEST((test("1234", -int_))); | |
50 | BOOST_TEST((test("abcd", -int_, false))); | |
51 | } | |
52 | ||
53 | { // test propagation of unused | |
54 | using boost::fusion::at_c; | |
55 | using boost::fusion::vector; | |
56 | ||
57 | vector<char, char> v; | |
58 | BOOST_TEST((test_attr("a1234c", char_ >> -omit[int_] >> char_, v))); | |
59 | BOOST_TEST((at_c<0>(v) == 'a')); | |
60 | BOOST_TEST((at_c<1>(v) == 'c')); | |
61 | ||
62 | v = boost::fusion::vector<char, char>(); | |
63 | BOOST_TEST((test_attr("a1234c", char_ >> omit[-int_] >> char_, v))); | |
64 | BOOST_TEST((at_c<0>(v) == 'a')); | |
65 | BOOST_TEST((at_c<1>(v) == 'c')); | |
66 | ||
67 | char ch; | |
68 | BOOST_TEST((test_attr(",c", -(',' >> char_), ch))); | |
69 | BOOST_TEST((ch == 'c')); | |
70 | } | |
71 | ||
72 | { // test action | |
73 | boost::optional<int> n = 0; | |
74 | BOOST_TEST((test_attr("1234", (-int_)[test_attribute_type()], n))); | |
75 | BOOST_TEST((n.get() == 1234)); | |
76 | } | |
77 | ||
78 | { | |
79 | std::string s; | |
80 | BOOST_TEST((test_attr("abc", char_ >> -(char_ >> char_), s))); | |
81 | BOOST_TEST(s == "abc"); | |
82 | } | |
83 | ||
84 | { | |
85 | boost::optional<int> n = 0; | |
86 | auto f = [&](auto& ctx){ n = _attr(ctx); }; | |
87 | ||
88 | BOOST_TEST((test("1234", (-int_)[f]))); | |
89 | BOOST_TEST(n.get() == 1234); | |
90 | ||
91 | n = boost::optional<int>(); | |
92 | BOOST_TEST((test("abcd", (-int_)[f], false))); | |
93 | BOOST_TEST(!n); | |
94 | } | |
95 | ||
96 | { | |
97 | std::vector<adata> v; | |
98 | BOOST_TEST((test_attr("a 1 2 a 2", *('a' >> int_ >> -int_), v | |
99 | , char_(' ')))); | |
100 | BOOST_TEST(2 == v.size() && | |
101 | 1 == v[0].a && v[0].b && 2 == *(v[0].b) && | |
102 | 2 == v[1].a && !v[1].b); | |
103 | } | |
104 | ||
105 | return boost::report_errors(); | |
106 | } |