hanchenye-llvm-project/libcxx/test/re/re.regex/re.regex.construct/iter_iter.pass.cpp

44 lines
1.2 KiB
C++

//===----------------------------------------------------------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
// <regex>
// template <class charT, class traits = regex_traits<charT>> class basic_regex;
// template <class ForwardIterator>
// basic_regex(ForwardIterator first, ForwardIterator last);
#include <regex>
#include <cassert>
#include "../../iterators.h"
template <class Iter>
void
test(Iter first, Iter last, unsigned mc)
{
std::basic_regex<typename std::iterator_traits<Iter>::value_type> r(first, last);
assert(r.flags() == std::regex_constants::ECMAScript);
assert(r.mark_count() == mc);
}
int main()
{
typedef forward_iterator<std::string::const_iterator> F;
std::string s1("\\(a\\)");
std::string s2("\\(a[bc]\\)");
std::string s3("\\(a\\([bc]\\)\\)");
std::string s4("(a([bc]))");
test(F(s1.begin()), F(s1.end()), 0);
test(F(s2.begin()), F(s2.end()), 0);
test(F(s3.begin()), F(s3.end()), 0);
test(F(s4.begin()), F(s4.end()), 2);
}