1//===----------------------------------------------------------------------===//
2//
3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4// See https://llvm.org/LICENSE.txt for license information.
5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6//
7//===----------------------------------------------------------------------===//
8
9// <regex>
10
11// template <class BidirectionalIterator, class Allocator, class charT, class traits>
12// bool
13// regex_match(BidirectionalIterator first, BidirectionalIterator last,
14// match_results<BidirectionalIterator, Allocator>& m,
15// const basic_regex<charT, traits>& e,
16// regex_constants::match_flag_type flags = regex_constants::match_default);
17
18#include <regex>
19#include <cassert>
20
21#include "test_macros.h"
22#include "test_iterators.h"
23
24int main(int, char**)
25{
26 {
27 std::cmatch m;
28 const char s[] = "tournament";
29 assert(std::regex_match(s, m, std::regex("tour\nto\ntournament",
30 std::regex_constants::grep)));
31 assert(m.size() == 1);
32 assert(!m.prefix().matched);
33 assert(m.prefix().first == s);
34 assert(m.prefix().second == m[0].first);
35 assert(!m.suffix().matched);
36 assert(m.suffix().first == m[0].second);
37 assert(m.suffix().second == s + std::char_traits<char>::length(s));
38 assert(m.length(0) == 10);
39 assert(m.position(0) == 0);
40 assert(m.str(0) == "tournament");
41 }
42 {
43 std::cmatch m;
44 const char s[] = "ment";
45 assert(!std::regex_match(s, m, std::regex("tour\n\ntournament",
46 std::regex_constants::grep)));
47 assert(m.size() == 0);
48 }
49
50 return 0;
51}
52

source code of libcxx/test/std/re/re.alg/re.alg.match/grep.pass.cpp