55 lines
1.3 KiB
C++
55 lines
1.3 KiB
C++
//===----------------------------------------------------------------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is dual licensed under the MIT and the University of Illinois Open
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// Source Licenses. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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// <regex>
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// class match_results<BidirectionalIterator, Allocator>
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// const_reference operator[](size_type n) const;
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#include <regex>
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#include <cassert>
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#include "test_macros.h"
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void
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test(std::regex_constants::syntax_option_type syntax)
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{
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std::match_results<const char*> m;
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const char s[] = "abcdefghijk";
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assert(std::regex_search(s, m, std::regex("cd((e)fg)hi|(z)", syntax)));
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assert(m.size() == 4);
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assert(m[0].first == s+2);
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assert(m[0].second == s+9);
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assert(m[0].matched == true);
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assert(m[1].first == s+4);
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assert(m[1].second == s+7);
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assert(m[1].matched == true);
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assert(m[2].first == s+4);
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assert(m[2].second == s+5);
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assert(m[2].matched == true);
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assert(m[3].first == s+11);
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assert(m[3].second == s+11);
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assert(m[3].matched == false);
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assert(m[4].first == s+11);
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assert(m[4].second == s+11);
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assert(m[4].matched == false);
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}
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int main()
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{
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test(std::regex_constants::ECMAScript);
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test(std::regex_constants::extended);
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}
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