Howard Hinnant | cd59acc | 2013-07-23 16:18:04 +0000 | [diff] [blame] | 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_match(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 | // std::regex in ECMAScript mode should not ignore capture groups inside lookahead assertions. |
| 20 | // For example, matching /(?=(a))(a)/ to "a" should yield two captures: \1 = "a", \2 = "a" |
| 21 | |
| 22 | #include <regex> |
| 23 | #include <cassert> |
| 24 | |
| 25 | #include "test_iterators.h" |
| 26 | |
| 27 | int main() |
| 28 | { |
| 29 | { |
Eric Fiselier | e4e883e | 2014-10-27 19:29:32 +0000 | [diff] [blame] | 30 | std::regex re("^(?=(.))a$"); |
Howard Hinnant | cd59acc | 2013-07-23 16:18:04 +0000 | [diff] [blame] | 31 | assert(re.mark_count() == 1); |
| 32 | |
Eric Fiselier | e4e883e | 2014-10-27 19:29:32 +0000 | [diff] [blame] | 33 | std::string s("a"); |
Howard Hinnant | cd59acc | 2013-07-23 16:18:04 +0000 | [diff] [blame] | 34 | std::smatch m; |
| 35 | assert(std::regex_match(s, m, re)); |
| 36 | assert(m.size() == 2); |
| 37 | assert(m[0] == "a"); |
| 38 | assert(m[1] == "a"); |
| 39 | } |
| 40 | |
| 41 | { |
Eric Fiselier | e4e883e | 2014-10-27 19:29:32 +0000 | [diff] [blame] | 42 | std::regex re("^(a)(?=(.))(b)$"); |
Howard Hinnant | cd59acc | 2013-07-23 16:18:04 +0000 | [diff] [blame] | 43 | assert(re.mark_count() == 3); |
| 44 | |
Eric Fiselier | e4e883e | 2014-10-27 19:29:32 +0000 | [diff] [blame] | 45 | std::string s("ab"); |
Howard Hinnant | cd59acc | 2013-07-23 16:18:04 +0000 | [diff] [blame] | 46 | std::smatch m; |
| 47 | assert(std::regex_match(s, m, re)); |
| 48 | assert(m.size() == 4); |
| 49 | assert(m[0] == "ab"); |
| 50 | assert(m[1] == "a"); |
| 51 | assert(m[2] == "b"); |
| 52 | assert(m[3] == "b"); |
| 53 | } |
| 54 | |
| 55 | { |
Eric Fiselier | e4e883e | 2014-10-27 19:29:32 +0000 | [diff] [blame] | 56 | std::regex re("^(.)(?=(.)(?=.(.)))(...)$"); |
Howard Hinnant | cd59acc | 2013-07-23 16:18:04 +0000 | [diff] [blame] | 57 | assert(re.mark_count() == 4); |
| 58 | |
Eric Fiselier | e4e883e | 2014-10-27 19:29:32 +0000 | [diff] [blame] | 59 | std::string s("abcd"); |
Howard Hinnant | cd59acc | 2013-07-23 16:18:04 +0000 | [diff] [blame] | 60 | std::smatch m; |
| 61 | assert(std::regex_match(s, m, re)); |
| 62 | assert(m.size() == 5); |
| 63 | assert(m[0] == "abcd"); |
| 64 | assert(m[1] == "a"); |
| 65 | assert(m[2] == "b"); |
| 66 | assert(m[3] == "d"); |
| 67 | assert(m[4] == "bcd"); |
| 68 | } |
| 69 | |
| 70 | { |
Eric Fiselier | e4e883e | 2014-10-27 19:29:32 +0000 | [diff] [blame] | 71 | std::regex re("^(a)(?!([^b]))(.c)$"); |
Howard Hinnant | cd59acc | 2013-07-23 16:18:04 +0000 | [diff] [blame] | 72 | assert(re.mark_count() == 3); |
| 73 | |
Eric Fiselier | e4e883e | 2014-10-27 19:29:32 +0000 | [diff] [blame] | 74 | std::string s("abc"); |
Howard Hinnant | cd59acc | 2013-07-23 16:18:04 +0000 | [diff] [blame] | 75 | std::smatch m; |
| 76 | assert(std::regex_match(s, m, re)); |
| 77 | assert(m.size() == 4); |
| 78 | assert(m[0] == "abc"); |
| 79 | assert(m[1] == "a"); |
| 80 | assert(m[2] == ""); |
| 81 | assert(m[3] == "bc"); |
| 82 | } |
| 83 | |
| 84 | { |
Eric Fiselier | e4e883e | 2014-10-27 19:29:32 +0000 | [diff] [blame] | 85 | std::regex re("^(?!((b)))(?=(.))(?!(abc)).b$"); |
Howard Hinnant | cd59acc | 2013-07-23 16:18:04 +0000 | [diff] [blame] | 86 | assert(re.mark_count() == 4); |
| 87 | |
Eric Fiselier | e4e883e | 2014-10-27 19:29:32 +0000 | [diff] [blame] | 88 | std::string s("ab"); |
Howard Hinnant | cd59acc | 2013-07-23 16:18:04 +0000 | [diff] [blame] | 89 | std::smatch m; |
| 90 | assert(std::regex_match(s, m, re)); |
| 91 | assert(m.size() == 5); |
| 92 | assert(m[0] == "ab"); |
| 93 | assert(m[1] == ""); |
| 94 | assert(m[2] == ""); |
| 95 | assert(m[3] == "a"); |
| 96 | assert(m[4] == ""); |
| 97 | } |
| 98 | } |