72 lines · cpp
1//===----------------------------------------------------------------------===//2//3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.4// See https://llvm.org/LICENSE.txt for license information.5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception6//7//===----------------------------------------------------------------------===//8 9// <regex>10 11// template <class charT, class traits = regex_traits<charT>> class basic_regex;12 13// template <class ForwardIterator>14// basic_regex(ForwardIterator first, ForwardIterator last,15// flag_type f = regex_constants::ECMAScript);16 17#include <regex>18#include <cassert>19 20#include "test_iterators.h"21#include "test_macros.h"22 23template <class Iter>24void25test(Iter first, Iter last, std::regex_constants::syntax_option_type f, unsigned mc)26{27 std::basic_regex<typename std::iterator_traits<Iter>::value_type> r(first, last, f);28 assert(r.flags() == f);29 assert(r.mark_count() == mc);30}31 32int main(int, char**)33{34 typedef forward_iterator<std::string::const_iterator> F;35 std::string s1("\\(a\\)");36 std::string s2("\\(a[bc]\\)");37 std::string s3("\\(a\\([bc]\\)\\)");38 std::string s4("(a([bc]))");39 40 test(F(s1.begin()), F(s1.end()), std::regex_constants::basic, 1);41 test(F(s2.begin()), F(s2.end()), std::regex_constants::basic, 1);42 test(F(s3.begin()), F(s3.end()), std::regex_constants::basic, 2);43 test(F(s4.begin()), F(s4.end()), std::regex_constants::basic, 0);44 45 test(F(s1.begin()), F(s1.end()), std::regex_constants::extended, 0);46 test(F(s2.begin()), F(s2.end()), std::regex_constants::extended, 0);47 test(F(s3.begin()), F(s3.end()), std::regex_constants::extended, 0);48 test(F(s4.begin()), F(s4.end()), std::regex_constants::extended, 2);49 50 test(F(s1.begin()), F(s1.end()), std::regex_constants::ECMAScript, 0);51 test(F(s2.begin()), F(s2.end()), std::regex_constants::ECMAScript, 0);52 test(F(s3.begin()), F(s3.end()), std::regex_constants::ECMAScript, 0);53 test(F(s4.begin()), F(s4.end()), std::regex_constants::ECMAScript, 2);54 55 test(F(s1.begin()), F(s1.end()), std::regex_constants::awk, 0);56 test(F(s2.begin()), F(s2.end()), std::regex_constants::awk, 0);57 test(F(s3.begin()), F(s3.end()), std::regex_constants::awk, 0);58 test(F(s4.begin()), F(s4.end()), std::regex_constants::awk, 2);59 60 test(F(s1.begin()), F(s1.end()), std::regex_constants::grep, 1);61 test(F(s2.begin()), F(s2.end()), std::regex_constants::grep, 1);62 test(F(s3.begin()), F(s3.end()), std::regex_constants::grep, 2);63 test(F(s4.begin()), F(s4.end()), std::regex_constants::grep, 0);64 65 test(F(s1.begin()), F(s1.end()), std::regex_constants::egrep, 0);66 test(F(s2.begin()), F(s2.end()), std::regex_constants::egrep, 0);67 test(F(s3.begin()), F(s3.end()), std::regex_constants::egrep, 0);68 test(F(s4.begin()), F(s4.end()), std::regex_constants::egrep, 2);69 70 return 0;71}72