forked from mirror/libcxx
You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
100 lines
2.7 KiB
C++
100 lines
2.7 KiB
C++
//===----------------------------------------------------------------------===//
|
|
//
|
|
// The LLVM Compiler Infrastructure
|
|
//
|
|
// This file is dual licensed under the MIT and the University of Illinois Open
|
|
// Source Licenses. See LICENSE.TXT for details.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
// <regex>
|
|
|
|
// template <class BidirectionalIterator, class Allocator, class charT, class traits>
|
|
// bool
|
|
// regex_match(BidirectionalIterator first, BidirectionalIterator last,
|
|
// match_results<BidirectionalIterator, Allocator>& m,
|
|
// const basic_regex<charT, traits>& e,
|
|
// regex_constants::match_flag_type flags = regex_constants::match_default);
|
|
|
|
// std::regex in ECMAScript mode should not ignore capture groups inside lookahead assertions.
|
|
// For example, matching /(?=(a))(a)/ to "a" should yield two captures: \1 = "a", \2 = "a"
|
|
|
|
#include <regex>
|
|
#include <cassert>
|
|
|
|
#include "test_macros.h"
|
|
#include "test_iterators.h"
|
|
|
|
int main()
|
|
{
|
|
{
|
|
std::regex re("^(?=(.))a$");
|
|
assert(re.mark_count() == 1);
|
|
|
|
std::string s("a");
|
|
std::smatch m;
|
|
assert(std::regex_match(s, m, re));
|
|
assert(m.size() == 2);
|
|
assert(m[0] == "a");
|
|
assert(m[1] == "a");
|
|
}
|
|
|
|
{
|
|
std::regex re("^(a)(?=(.))(b)$");
|
|
assert(re.mark_count() == 3);
|
|
|
|
std::string s("ab");
|
|
std::smatch m;
|
|
assert(std::regex_match(s, m, re));
|
|
assert(m.size() == 4);
|
|
assert(m[0] == "ab");
|
|
assert(m[1] == "a");
|
|
assert(m[2] == "b");
|
|
assert(m[3] == "b");
|
|
}
|
|
|
|
{
|
|
std::regex re("^(.)(?=(.)(?=.(.)))(...)$");
|
|
assert(re.mark_count() == 4);
|
|
|
|
std::string s("abcd");
|
|
std::smatch m;
|
|
assert(std::regex_match(s, m, re));
|
|
assert(m.size() == 5);
|
|
assert(m[0] == "abcd");
|
|
assert(m[1] == "a");
|
|
assert(m[2] == "b");
|
|
assert(m[3] == "d");
|
|
assert(m[4] == "bcd");
|
|
}
|
|
|
|
{
|
|
std::regex re("^(a)(?!([^b]))(.c)$");
|
|
assert(re.mark_count() == 3);
|
|
|
|
std::string s("abc");
|
|
std::smatch m;
|
|
assert(std::regex_match(s, m, re));
|
|
assert(m.size() == 4);
|
|
assert(m[0] == "abc");
|
|
assert(m[1] == "a");
|
|
assert(m[2] == "");
|
|
assert(m[3] == "bc");
|
|
}
|
|
|
|
{
|
|
std::regex re("^(?!((b)))(?=(.))(?!(abc)).b$");
|
|
assert(re.mark_count() == 4);
|
|
|
|
std::string s("ab");
|
|
std::smatch m;
|
|
assert(std::regex_match(s, m, re));
|
|
assert(m.size() == 5);
|
|
assert(m[0] == "ab");
|
|
assert(m[1] == "");
|
|
assert(m[2] == "");
|
|
assert(m[3] == "a");
|
|
assert(m[4] == "");
|
|
}
|
|
}
|