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 charT, class traits = regex_traits<charT>> class basic_regex;
12
13// template <class ForwardIterator>
14// basic_regex(ForwardIterator first, ForwardIterator last,
15// flag_type f = regex_constants::ECMAScript);
16
17#include <regex>
18#include <cassert>
19
20#include "test_iterators.h"
21#include "test_macros.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(int, char**)
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(first: F(s1.begin()), last: F(s1.end()), f: std::regex_constants::basic, mc: 1);
41 test(first: F(s2.begin()), last: F(s2.end()), f: std::regex_constants::basic, mc: 1);
42 test(first: F(s3.begin()), last: F(s3.end()), f: std::regex_constants::basic, mc: 2);
43 test(first: F(s4.begin()), last: F(s4.end()), f: std::regex_constants::basic, mc: 0);
44
45 test(first: F(s1.begin()), last: F(s1.end()), f: std::regex_constants::extended, mc: 0);
46 test(first: F(s2.begin()), last: F(s2.end()), f: std::regex_constants::extended, mc: 0);
47 test(first: F(s3.begin()), last: F(s3.end()), f: std::regex_constants::extended, mc: 0);
48 test(first: F(s4.begin()), last: F(s4.end()), f: std::regex_constants::extended, mc: 2);
49
50 test(first: F(s1.begin()), last: F(s1.end()), f: std::regex_constants::ECMAScript, mc: 0);
51 test(first: F(s2.begin()), last: F(s2.end()), f: std::regex_constants::ECMAScript, mc: 0);
52 test(first: F(s3.begin()), last: F(s3.end()), f: std::regex_constants::ECMAScript, mc: 0);
53 test(first: F(s4.begin()), last: F(s4.end()), f: std::regex_constants::ECMAScript, mc: 2);
54
55 test(first: F(s1.begin()), last: F(s1.end()), f: std::regex_constants::awk, mc: 0);
56 test(first: F(s2.begin()), last: F(s2.end()), f: std::regex_constants::awk, mc: 0);
57 test(first: F(s3.begin()), last: F(s3.end()), f: std::regex_constants::awk, mc: 0);
58 test(first: F(s4.begin()), last: F(s4.end()), f: std::regex_constants::awk, mc: 2);
59
60 test(first: F(s1.begin()), last: F(s1.end()), f: std::regex_constants::grep, mc: 1);
61 test(first: F(s2.begin()), last: F(s2.end()), f: std::regex_constants::grep, mc: 1);
62 test(first: F(s3.begin()), last: F(s3.end()), f: std::regex_constants::grep, mc: 2);
63 test(first: F(s4.begin()), last: F(s4.end()), f: std::regex_constants::grep, mc: 0);
64
65 test(first: F(s1.begin()), last: F(s1.end()), f: std::regex_constants::egrep, mc: 0);
66 test(first: F(s2.begin()), last: F(s2.end()), f: std::regex_constants::egrep, mc: 0);
67 test(first: F(s3.begin()), last: F(s3.end()), f: std::regex_constants::egrep, mc: 0);
68 test(first: F(s4.begin()), last: F(s4.end()), f: std::regex_constants::egrep, mc: 2);
69
70 return 0;
71}
72

source code of libcxx/test/std/re/re.regex/re.regex.construct/iter_iter_flg.pass.cpp