1 //===----------------------------------------------------------------------===//
2 //
3 // The LLVM Compiler Infrastructure
4 //
5 // This file is dual licensed under the MIT and the University of Illinois Open
6 // Source Licenses. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9
10 // <regex>
11 // UNSUPPORTED: c++98, c++03, c++11, c++14
12 // UNSUPPORTED: libcpp-no-deduction-guides
13
14
15 // template<class ForwardIterator>
16 // basic_regex(ForwardIterator, ForwardIterator,
17 // regex_constants::syntax_option_type = regex_constants::ECMAScript)
18 // -> basic_regex<typename iterator_traits<ForwardIterator>::value_type>;
19
20
21 #include <regex>
22 #include <string>
23 #include <iterator>
24 #include <cassert>
25 #include <cstddef>
26
27 #include "test_macros.h"
28 #include "test_iterators.h"
29 #include "test_allocator.h"
30
31 using namespace std::literals;
32
33 struct A {};
34
main()35 int main()
36 {
37
38 // Test the explicit deduction guides
39 {
40 // basic_regex(ForwardIterator, ForwardIterator)
41 std::string s1("\\(a\\)");
42 std::basic_regex re(s1.begin(), s1.end());
43
44 static_assert(std::is_same_v<decltype(re), std::basic_regex<char>>, "");
45 assert(re.flags() == std::regex_constants::ECMAScript);
46 assert(re.mark_count() == 0);
47 }
48
49 {
50 std::wstring s1(L"\\(a\\)");
51 std::basic_regex re(s1.begin(), s1.end(), std::regex_constants::basic);
52
53 static_assert(std::is_same_v<decltype(re), std::basic_regex<wchar_t>>, "");
54 assert(re.flags() == std::regex_constants::basic);
55 assert(re.mark_count() == 1);
56 }
57
58 // Test the implicit deduction guides
59 {
60 // basic_regex(string);
61 std::basic_regex re("(a([bc]))"s);
62 static_assert(std::is_same_v<decltype(re), std::basic_regex<char>>, "");
63 assert(re.flags() == std::regex_constants::ECMAScript);
64 assert(re.mark_count() == 2);
65 }
66
67 {
68 // basic_regex(string, flag_type);
69 std::basic_regex re(L"(a([bc]))"s, std::regex_constants::awk);
70 static_assert(std::is_same_v<decltype(re), std::basic_regex<wchar_t>>, "");
71 assert(re.flags() == std::regex_constants::awk);
72 assert(re.mark_count() == 2);
73 }
74
75 {
76 // basic_regex(const charT*);
77 std::basic_regex re("ABCDE");
78 static_assert(std::is_same_v<decltype(re), std::basic_regex<char>>, "");
79 assert(re.flags() == std::regex_constants::ECMAScript);
80 assert(re.mark_count() == 0);
81 }
82
83 {
84 // basic_regex(const charT*, flag_type);
85 std::basic_regex re(L"ABCDE", std::regex_constants::grep);
86 static_assert(std::is_same_v<decltype(re), std::basic_regex<wchar_t>>, "");
87 assert(re.flags() == std::regex_constants::grep);
88 assert(re.mark_count() == 0);
89 }
90
91 {
92 // basic_regex(const charT*, size_t);
93 std::basic_regex re("ABCDEDEF", 7);
94 static_assert(std::is_same_v<decltype(re), std::basic_regex<char>>, "");
95 assert(re.flags() == std::regex_constants::ECMAScript);
96 assert(re.mark_count() == 0);
97 }
98
99 {
100 // basic_regex(const charT*, size_t, flag_type);
101 std::basic_regex re(L"ABCDEDEF", 8, std::regex_constants::awk);
102 static_assert(std::is_same_v<decltype(re), std::basic_regex<wchar_t>>, "");
103 assert(re.flags() == std::regex_constants::awk);
104 assert(re.mark_count() == 0);
105 }
106
107 {
108 // basic_regex(const basic_regex &);
109 std::basic_regex<char> source;
110 std::basic_regex re(source);
111 static_assert(std::is_same_v<decltype(re), std::basic_regex<char>>, "");
112 assert(re.flags() == source.flags());
113 assert(re.mark_count() == source.mark_count());
114 }
115
116 {
117 // template<class ST, class SA>
118 // explicit basic_regex(const basic_string<charT, ST, SA>& p,
119 // flag_type f = regex_constants::ECMAScript);
120 }
121
122 {
123 // basic_regex(initializer_list);
124 std::basic_regex re({'A', 'B', 'F', 'E', 'D'});
125 static_assert(std::is_same_v<decltype(re), std::basic_regex<char>>, "");
126 assert(re.flags() == std::regex_constants::ECMAScript);
127 assert(re.mark_count() == 0);
128 }
129
130 {
131 // basic_regex(initializer_list, flag_type);
132 std::basic_regex re({L'A', L'B', L'F', L'E', L'D'}, std::regex_constants::grep);
133 static_assert(std::is_same_v<decltype(re), std::basic_regex<wchar_t>>, "");
134 assert(re.flags() == std::regex_constants::grep);
135 assert(re.mark_count() == 0);
136 }
137 }
138