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7c673cae FG |
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 | =============================================================================*/ | |
7c673cae FG |
7 | #include <boost/spirit/home/x3.hpp> |
8 | #include <boost/fusion/adapted/struct.hpp> | |
9 | #include <boost/fusion/include/vector.hpp> | |
10 | ||
11 | #include <iostream> | |
12 | #include "test.hpp" | |
92f5a8d4 | 13 | #include "utils.hpp" |
7c673cae | 14 | |
1e59de90 TL |
15 | #ifdef _MSC_VER |
16 | // bogus https://developercommunity.visualstudio.com/t/buggy-warning-c4709/471956 | |
17 | # pragma warning(disable: 4709) // comma operator within array index expression | |
18 | #endif | |
19 | ||
7c673cae FG |
20 | struct adata |
21 | { | |
22 | int a; | |
23 | boost::optional<int> b; | |
24 | }; | |
25 | ||
26 | BOOST_FUSION_ADAPT_STRUCT(adata, | |
27 | a, b | |
28 | ) | |
29 | ||
30 | struct test_attribute_type | |
31 | { | |
32 | template <typename Context> | |
33 | void operator()(Context& ctx) const | |
34 | { | |
35 | BOOST_TEST(typeid(decltype(_attr(ctx))).name() == typeid(boost::optional<int>).name()); | |
36 | } | |
37 | }; | |
38 | ||
39 | int | |
40 | main() | |
41 | { | |
11fdf7f2 TL |
42 | using boost::spirit::x3::traits::is_optional; |
43 | ||
44 | static_assert(is_optional<boost::optional<int>>(), "is_optional problem"); | |
45 | ||
7c673cae FG |
46 | using spirit_test::test; |
47 | using spirit_test::test_attr; | |
48 | ||
49 | using boost::spirit::x3::int_; | |
50 | using boost::spirit::x3::omit; | |
51 | using boost::spirit::x3::ascii::char_; | |
52 | ||
f67539c2 TL |
53 | BOOST_SPIRIT_ASSERT_CONSTEXPR_CTORS(-int_); |
54 | ||
7c673cae FG |
55 | { |
56 | BOOST_TEST((test("1234", -int_))); | |
57 | BOOST_TEST((test("abcd", -int_, false))); | |
20effc67 TL |
58 | |
59 | boost::optional<int> n; | |
60 | BOOST_TEST(test_attr("", -int_, n)) | |
61 | && BOOST_TEST(!n); | |
62 | BOOST_TEST(test_attr("123", -int_, n)) | |
63 | && BOOST_TEST(n) && BOOST_TEST_EQ(*n, 123); | |
64 | ||
65 | boost::optional<std::string> s; | |
66 | BOOST_TEST(test_attr("", -+char_, s)) | |
67 | && BOOST_TEST(!s); | |
68 | BOOST_TEST(test_attr("abc", -+char_, s)) | |
69 | && BOOST_TEST(s) && BOOST_TEST_EQ(*s, "abc"); | |
7c673cae FG |
70 | } |
71 | ||
72 | { // test propagation of unused | |
73 | using boost::fusion::at_c; | |
74 | using boost::fusion::vector; | |
75 | ||
76 | vector<char, char> v; | |
77 | BOOST_TEST((test_attr("a1234c", char_ >> -omit[int_] >> char_, v))); | |
78 | BOOST_TEST((at_c<0>(v) == 'a')); | |
79 | BOOST_TEST((at_c<1>(v) == 'c')); | |
80 | ||
81 | v = boost::fusion::vector<char, char>(); | |
82 | BOOST_TEST((test_attr("a1234c", char_ >> omit[-int_] >> char_, v))); | |
83 | BOOST_TEST((at_c<0>(v) == 'a')); | |
84 | BOOST_TEST((at_c<1>(v) == 'c')); | |
85 | ||
86 | char ch; | |
87 | BOOST_TEST((test_attr(",c", -(',' >> char_), ch))); | |
88 | BOOST_TEST((ch == 'c')); | |
89 | } | |
90 | ||
91 | { // test action | |
92 | boost::optional<int> n = 0; | |
93 | BOOST_TEST((test_attr("1234", (-int_)[test_attribute_type()], n))); | |
94 | BOOST_TEST((n.get() == 1234)); | |
95 | } | |
96 | ||
97 | { | |
98 | std::string s; | |
99 | BOOST_TEST((test_attr("abc", char_ >> -(char_ >> char_), s))); | |
100 | BOOST_TEST(s == "abc"); | |
101 | } | |
102 | ||
103 | { | |
104 | boost::optional<int> n = 0; | |
105 | auto f = [&](auto& ctx){ n = _attr(ctx); }; | |
106 | ||
107 | BOOST_TEST((test("1234", (-int_)[f]))); | |
108 | BOOST_TEST(n.get() == 1234); | |
109 | ||
110 | n = boost::optional<int>(); | |
111 | BOOST_TEST((test("abcd", (-int_)[f], false))); | |
112 | BOOST_TEST(!n); | |
113 | } | |
114 | ||
115 | { | |
116 | std::vector<adata> v; | |
117 | BOOST_TEST((test_attr("a 1 2 a 2", *('a' >> int_ >> -int_), v | |
118 | , char_(' ')))); | |
119 | BOOST_TEST(2 == v.size() && | |
120 | 1 == v[0].a && v[0].b && 2 == *(v[0].b) && | |
121 | 2 == v[1].a && !v[1].b); | |
122 | } | |
123 | ||
92f5a8d4 TL |
124 | { // test move only types |
125 | boost::optional<move_only> o; | |
126 | BOOST_TEST(test_attr("s", -synth_move_only, o)); | |
127 | BOOST_TEST(o); | |
128 | } | |
129 | ||
7c673cae FG |
130 | return boost::report_errors(); |
131 | } |