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 #include "test_macros.h"
22
main()23 int main()
24 {
25 // Iterating over /^a/ should yield one instance at the beginning
26 // of the text.
27
28 const char *text = "aaa\naa";
29 std::regex re("^a");
30 std::cregex_iterator it(text, text+6, re);
31 std::cregex_iterator end = std::cregex_iterator();
32
33 assert(it->str() == "a");
34 assert(it->position(0) == 0);
35 assert(it->length(0) == 1);
36
37 ++it;
38 assert(it == end);
39 }
40