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
21template <class String>
22void
23test(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
30int 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