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//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
// <regex>
// UNSUPPORTED: c++03, c++11, c++14
// UNSUPPORTED: libcpp-no-deduction-guides
// template<class ForwardIterator>
// basic_regex(ForwardIterator, ForwardIterator,
// regex_constants::syntax_option_type = regex_constants::ECMAScript)
// -> basic_regex<typename iterator_traits<ForwardIterator>::value_type>;
#include <regex>
#include <string>
#include <iterator>
#include <cassert>
#include <cstddef>
#include "test_macros.h"
#include "test_iterators.h"
#include "test_allocator.h"
using namespace std::literals;
struct A {};
int main(int, char**)
{
// Test the explicit deduction guides
{
// basic_regex(ForwardIterator, ForwardIterator)
std::string s1("\\(a\\)");
std::basic_regex re(s1.begin(), s1.end());
static_assert(std::is_same_v<decltype(re), std::basic_regex<char>>, "");
assert(re.flags() == std::regex_constants::ECMAScript);
assert(re.mark_count() == 0);
}
{
std::wstring s1(L"\\(a\\)");
std::basic_regex re(s1.begin(), s1.end(), std::regex_constants::basic);
static_assert(std::is_same_v<decltype(re), std::basic_regex<wchar_t>>, "");
assert(re.flags() == std::regex_constants::basic);
assert(re.mark_count() == 1);
}
// Test the implicit deduction guides
{
// basic_regex(string);
std::basic_regex re("(a([bc]))"s);
static_assert(std::is_same_v<decltype(re), std::basic_regex<char>>, "");
assert(re.flags() == std::regex_constants::ECMAScript);
assert(re.mark_count() == 2);
}
{
// basic_regex(string, flag_type);
std::basic_regex re(L"(a([bc]))"s, std::regex_constants::awk);
static_assert(std::is_same_v<decltype(re), std::basic_regex<wchar_t>>, "");
assert(re.flags() == std::regex_constants::awk);
assert(re.mark_count() == 2);
}
{
// basic_regex(const charT*);
std::basic_regex re("ABCDE");
static_assert(std::is_same_v<decltype(re), std::basic_regex<char>>, "");
assert(re.flags() == std::regex_constants::ECMAScript);
assert(re.mark_count() == 0);
}
{
// basic_regex(const charT*, flag_type);
std::basic_regex re(L"ABCDE", std::regex_constants::grep);
static_assert(std::is_same_v<decltype(re), std::basic_regex<wchar_t>>, "");
assert(re.flags() == std::regex_constants::grep);
assert(re.mark_count() == 0);
}
{
// basic_regex(const charT*, size_t);
std::basic_regex re("ABCDEDEF", 7);
static_assert(std::is_same_v<decltype(re), std::basic_regex<char>>, "");
assert(re.flags() == std::regex_constants::ECMAScript);
assert(re.mark_count() == 0);
}
{
// basic_regex(const charT*, size_t, flag_type);
std::basic_regex re(L"ABCDEDEF", 8, std::regex_constants::awk);
static_assert(std::is_same_v<decltype(re), std::basic_regex<wchar_t>>, "");
assert(re.flags() == std::regex_constants::awk);
assert(re.mark_count() == 0);
}
{
// basic_regex(const basic_regex &);
std::basic_regex<char> source;
std::basic_regex re(source);
static_assert(std::is_same_v<decltype(re), std::basic_regex<char>>, "");
assert(re.flags() == source.flags());
assert(re.mark_count() == source.mark_count());
}
{
// template<class ST, class SA>
// explicit basic_regex(const basic_string<charT, ST, SA>& p,
// flag_type f = regex_constants::ECMAScript);
}
{
// basic_regex(initializer_list);
std::basic_regex re({'A', 'B', 'F', 'E', 'D'});
static_assert(std::is_same_v<decltype(re), std::basic_regex<char>>, "");
assert(re.flags() == std::regex_constants::ECMAScript);
assert(re.mark_count() == 0);
}
{
// basic_regex(initializer_list, flag_type);
std::basic_regex re({L'A', L'B', L'F', L'E', L'D'}, std::regex_constants::grep);
static_assert(std::is_same_v<decltype(re), std::basic_regex<wchar_t>>, "");
assert(re.flags() == std::regex_constants::grep);
assert(re.mark_count() == 0);
}
return 0;
}
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