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 BidirectionalIterator, class Allocator, class charT, class traits>
13 // bool
14 // regex_search(BidirectionalIterator first, BidirectionalIterator last,
15 // match_results<BidirectionalIterator, Allocator>& m,
16 // const basic_regex<charT, traits>& e,
17 // regex_constants::match_flag_type flags = regex_constants::match_default);
18
19 #include <regex>
20 #include <cassert>
21
main()22 int main()
23 {
24 // Iterating over /^a/ should yield one instance at the beginning
25 // of the text.
26
27 const char *text = "aaa\naa";
28 std::regex re{"^a"};
29 std::cregex_iterator it{text, text+6, re};
30 std::cregex_iterator end{};
31
32 assert(it->str() == "a");
33 assert(it->position(0) == 0);
34 assert(it->length(0) == 1);
35
36 ++it;
37 assert(it == end);
38 }
39