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
12 // template <class charT, class traits = regex_traits<charT>> class basic_regex;
13
14 // template <class ST, class SA>
15 // basic_regex(const basic_string<charT, ST, SA>& s,
16 // flag_type f = regex_constants::ECMAScript);
17
18 #include <regex>
19 #include <cassert>
20
21 template <class String>
22 void
test(const String & p,std::regex_constants::syntax_option_type f,unsigned mc)23 test(const String& p, std::regex_constants::syntax_option_type f, unsigned mc)
24 {
25 std::basic_regex<typename String::value_type> r(p, f);
26 assert(r.flags() == f);
27 assert(r.mark_count() == mc);
28 }
29
main()30 int main()
31 {
32 test(std::string("\\(a\\)"), std::regex_constants::basic, 1);
33 test(std::string("\\(a[bc]\\)"), std::regex_constants::basic, 1);
34 test(std::string("\\(a\\([bc]\\)\\)"), std::regex_constants::basic, 2);
35 test(std::string("(a([bc]))"), std::regex_constants::basic, 0);
36
37 test(std::string("\\(a\\)"), std::regex_constants::extended, 0);
38 test(std::string("\\(a[bc]\\)"), std::regex_constants::extended, 0);
39 test(std::string("\\(a\\([bc]\\)\\)"), std::regex_constants::extended, 0);
40 test(std::string("(a([bc]))"), std::regex_constants::extended, 2);
41
42 test(std::string("\\(a\\)"), std::regex_constants::ECMAScript, 0);
43 test(std::string("\\(a[bc]\\)"), std::regex_constants::ECMAScript, 0);
44 test(std::string("\\(a\\([bc]\\)\\)"), std::regex_constants::ECMAScript, 0);
45 test(std::string("(a([bc]))"), std::regex_constants::ECMAScript, 2);
46
47 test(std::string("\\(a\\)"), std::regex_constants::awk, 0);
48 test(std::string("\\(a[bc]\\)"), std::regex_constants::awk, 0);
49 test(std::string("\\(a\\([bc]\\)\\)"), std::regex_constants::awk, 0);
50 test(std::string("(a([bc]))"), std::regex_constants::awk, 2);
51
52 test(std::string("\\(a\\)"), std::regex_constants::grep, 1);
53 test(std::string("\\(a[bc]\\)"), std::regex_constants::grep, 1);
54 test(std::string("\\(a\\([bc]\\)\\)"), std::regex_constants::grep, 2);
55 test(std::string("(a([bc]))"), std::regex_constants::grep, 0);
56
57 test(std::string("\\(a\\)"), std::regex_constants::egrep, 0);
58 test(std::string("\\(a[bc]\\)"), std::regex_constants::egrep, 0);
59 test(std::string("\\(a\\([bc]\\)\\)"), std::regex_constants::egrep, 0);
60 test(std::string("(a([bc]))"), std::regex_constants::egrep, 2);
61 }
62