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 // class match_results<BidirectionalIterator, Allocator> 13 14 // const_reference operator[](size_type n) const; 15 16 #include <regex> 17 #include <cassert> 18 19 void test(std::regex_constants::syntax_option_type syntax)20test(std::regex_constants::syntax_option_type syntax) 21 { 22 std::match_results<const char*> m; 23 const char s[] = "abcdefghijk"; 24 assert(std::regex_search(s, m, std::regex("cd((e)fg)hi|(z)", syntax))); 25 26 assert(m.size() == 4); 27 28 assert(m[0].first == s+2); 29 assert(m[0].second == s+9); 30 assert(m[0].matched == true); 31 32 assert(m[1].first == s+4); 33 assert(m[1].second == s+7); 34 assert(m[1].matched == true); 35 36 assert(m[2].first == s+4); 37 assert(m[2].second == s+5); 38 assert(m[2].matched == true); 39 40 assert(m[3].first == s+11); 41 assert(m[3].second == s+11); 42 assert(m[3].matched == false); 43 44 assert(m[4].first == s+11); 45 assert(m[4].second == s+11); 46 assert(m[4].matched == false); 47 } 48 main()49int main() 50 { 51 test(std::regex_constants::ECMAScript); 52 test(std::regex_constants::extended); 53 } 54