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 ForwardIterator>
15//    basic_regex(ForwardIterator first, ForwardIterator last,
16//                flag_type f = regex_constants::ECMAScript);
17
18#include <regex>
19#include <cassert>
20
21#include "test_iterators.h"
22
23template <class Iter>
24void
25test(Iter first, Iter last, std::regex_constants::syntax_option_type f, unsigned mc)
26{
27    std::basic_regex<typename std::iterator_traits<Iter>::value_type> r(first, last, f);
28    assert(r.flags() == f);
29    assert(r.mark_count() == mc);
30}
31
32int main()
33{
34    typedef forward_iterator<std::string::const_iterator> F;
35    std::string s1("\\(a\\)");
36    std::string s2("\\(a[bc]\\)");
37    std::string s3("\\(a\\([bc]\\)\\)");
38    std::string s4("(a([bc]))");
39
40    test(F(s1.begin()), F(s1.end()), std::regex_constants::basic, 1);
41    test(F(s2.begin()), F(s2.end()), std::regex_constants::basic, 1);
42    test(F(s3.begin()), F(s3.end()), std::regex_constants::basic, 2);
43    test(F(s4.begin()), F(s4.end()), std::regex_constants::basic, 0);
44
45    test(F(s1.begin()), F(s1.end()), std::regex_constants::extended, 0);
46    test(F(s2.begin()), F(s2.end()), std::regex_constants::extended, 0);
47    test(F(s3.begin()), F(s3.end()), std::regex_constants::extended, 0);
48    test(F(s4.begin()), F(s4.end()), std::regex_constants::extended, 2);
49
50    test(F(s1.begin()), F(s1.end()), std::regex_constants::ECMAScript, 0);
51    test(F(s2.begin()), F(s2.end()), std::regex_constants::ECMAScript, 0);
52    test(F(s3.begin()), F(s3.end()), std::regex_constants::ECMAScript, 0);
53    test(F(s4.begin()), F(s4.end()), std::regex_constants::ECMAScript, 2);
54
55    test(F(s1.begin()), F(s1.end()), std::regex_constants::awk, 0);
56    test(F(s2.begin()), F(s2.end()), std::regex_constants::awk, 0);
57    test(F(s3.begin()), F(s3.end()), std::regex_constants::awk, 0);
58    test(F(s4.begin()), F(s4.end()), std::regex_constants::awk, 2);
59
60    test(F(s1.begin()), F(s1.end()), std::regex_constants::grep, 1);
61    test(F(s2.begin()), F(s2.end()), std::regex_constants::grep, 1);
62    test(F(s3.begin()), F(s3.end()), std::regex_constants::grep, 2);
63    test(F(s4.begin()), F(s4.end()), std::regex_constants::grep, 0);
64
65    test(F(s1.begin()), F(s1.end()), std::regex_constants::egrep, 0);
66    test(F(s2.begin()), F(s2.end()), std::regex_constants::egrep, 0);
67    test(F(s3.begin()), F(s3.end()), std::regex_constants::egrep, 0);
68    test(F(s4.begin()), F(s4.end()), std::regex_constants::egrep, 2);
69}
70