1 //===----------------------------------------------------------------------===//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8
9 // UNSUPPORTED: c++03
10
11 // <regex>
12
13 // template <class charT, class traits = regex_traits<charT>> class basic_regex;
14
15 // basic_regex(initializer_list<charT> il,
16 // flag_type f = regex_constants::ECMAScript);
17
18 #include <regex>
19 #include <cassert>
20 #include "test_macros.h"
21
22
23 void
test(std::initializer_list<char> il,std::regex_constants::syntax_option_type f,unsigned mc)24 test(std::initializer_list<char> il, std::regex_constants::syntax_option_type f, unsigned mc)
25 {
26 std::basic_regex<char> r(il, f);
27 assert(r.flags() == f);
28 assert(r.mark_count() == mc);
29 }
30
31
main(int,char **)32 int main(int, char**)
33 {
34 std::string s1("\\(a\\)");
35 std::string s2("\\(a[bc]\\)");
36 std::string s3("\\(a\\([bc]\\)\\)");
37 std::string s4("(a([bc]))");
38
39 test({'\\', '(', 'a', '\\', ')'}, std::regex_constants::basic, 1);
40 test({'\\', '(', 'a', '[', 'b', 'c', ']', '\\', ')'}, std::regex_constants::basic, 1);
41 test({'\\', '(', 'a', '\\', '(', '[', 'b', 'c', ']', '\\', ')', '\\', ')'}, std::regex_constants::basic, 2);
42 test({'(', 'a', '(', '[', 'b', 'c', ']', ')', ')'}, std::regex_constants::basic, 0);
43
44 test({'\\', '(', 'a', '\\', ')'}, std::regex_constants::extended, 0);
45 test({'\\', '(', 'a', '[', 'b', 'c', ']', '\\', ')'}, std::regex_constants::extended, 0);
46 test({'\\', '(', 'a', '\\', '(', '[', 'b', 'c', ']', '\\', ')', '\\', ')'}, std::regex_constants::extended, 0);
47 test({'(', 'a', '(', '[', 'b', 'c', ']', ')', ')'}, std::regex_constants::extended, 2);
48
49 test({'\\', '(', 'a', '\\', ')'}, std::regex_constants::ECMAScript, 0);
50 test({'\\', '(', 'a', '[', 'b', 'c', ']', '\\', ')'}, std::regex_constants::ECMAScript, 0);
51 test({'\\', '(', 'a', '\\', '(', '[', 'b', 'c', ']', '\\', ')', '\\', ')'}, std::regex_constants::ECMAScript, 0);
52 test({'(', 'a', '(', '[', 'b', 'c', ']', ')', ')'}, std::regex_constants::ECMAScript, 2);
53
54 test({'\\', '(', 'a', '\\', ')'}, std::regex_constants::awk, 0);
55 test({'\\', '(', 'a', '[', 'b', 'c', ']', '\\', ')'}, std::regex_constants::awk, 0);
56 test({'\\', '(', 'a', '\\', '(', '[', 'b', 'c', ']', '\\', ')', '\\', ')'}, std::regex_constants::awk, 0);
57 test({'(', 'a', '(', '[', 'b', 'c', ']', ')', ')'}, std::regex_constants::awk, 2);
58
59 test({'\\', '(', 'a', '\\', ')'}, std::regex_constants::grep, 1);
60 test({'\\', '(', 'a', '[', 'b', 'c', ']', '\\', ')'}, std::regex_constants::grep, 1);
61 test({'\\', '(', 'a', '\\', '(', '[', 'b', 'c', ']', '\\', ')', '\\', ')'}, std::regex_constants::grep, 2);
62 test({'(', 'a', '(', '[', 'b', 'c', ']', ')', ')'}, std::regex_constants::grep, 0);
63
64 test({'\\', '(', 'a', '\\', ')'}, std::regex_constants::egrep, 0);
65 test({'\\', '(', 'a', '[', 'b', 'c', ']', '\\', ')'}, std::regex_constants::egrep, 0);
66 test({'\\', '(', 'a', '\\', '(', '[', 'b', 'c', ']', '\\', ')', '\\', ')'}, std::regex_constants::egrep, 0);
67 test({'(', 'a', '(', '[', 'b', 'c', ']', ')', ')'}, std::regex_constants::egrep, 2);
68
69 return 0;
70 }
71