xref: /llvm-project/libcxx/test/std/re/re.const/re.matchflag/match_not_bol.pass.cpp (revision d4b59a05fc7507cf69993109443dc5af47ae4fa8)
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 // match_not_bol:
12 //     The first character in the sequence [first,last) shall be treated as
13 //     though it is not at the beginning of a line, so the character ^ in the
14 //     regular expression shall not match [first,first).
15 
16 #include <regex>
17 #include <cassert>
18 #include "test_macros.h"
19 
main(int,char **)20 int main(int, char**)
21 {
22     {
23     std::string target = "foo";
24     std::regex re("^foo");
25     assert( std::regex_match(target, re));
26     assert(!std::regex_match(target, re, std::regex_constants::match_not_bol));
27     }
28 
29     {
30     std::string target = "foo";
31     std::regex re("foo");
32     assert( std::regex_match(target, re));
33     assert( std::regex_match(target, re, std::regex_constants::match_not_bol));
34     }
35 
36     {
37     std::string target = "fooby";
38     std::regex re("^foo");
39     assert( std::regex_search(target, re));
40     assert(!std::regex_search(target, re, std::regex_constants::match_not_bol));
41     }
42 
43     {
44     std::string target = "fooby";
45     std::regex re("foo");
46     assert( std::regex_search(target, re));
47     assert( std::regex_search(target, re, std::regex_constants::match_not_bol));
48     }
49 
50   return 0;
51 }
52