70 lines
2.8 KiB
C++
70 lines
2.8 KiB
C++
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//===----------------------------------------------------------------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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// <regex>
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// template <class charT, class traits = regex_traits<charT>> class basic_regex;
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// template <class ForwardIterator>
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// basic_regex(ForwardIterator first, ForwardIterator last,
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// flag_type f = regex_constants::ECMAScript);
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#include <regex>
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#include <cassert>
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#include "../../iterators.h"
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template <class Iter>
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void
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test(Iter first, Iter last, std::regex_constants::syntax_option_type f, unsigned mc)
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{
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std::basic_regex<typename std::iterator_traits<Iter>::value_type> r(first, last, f);
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assert(r.flags() == f);
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assert(r.mark_count() == mc);
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}
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int main()
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{
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typedef forward_iterator<std::string::const_iterator> F;
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std::string s1("\\(a\\)");
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std::string s2("\\(a[bc]\\)");
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std::string s3("\\(a\\([bc]\\)\\)");
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std::string s4("(a([bc]))");
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test(F(s1.begin()), F(s1.end()), std::regex_constants::basic, 1);
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test(F(s2.begin()), F(s2.end()), std::regex_constants::basic, 1);
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test(F(s3.begin()), F(s3.end()), std::regex_constants::basic, 2);
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test(F(s4.begin()), F(s4.end()), std::regex_constants::basic, 0);
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test(F(s1.begin()), F(s1.end()), std::regex_constants::extended, 0);
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test(F(s2.begin()), F(s2.end()), std::regex_constants::extended, 0);
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test(F(s3.begin()), F(s3.end()), std::regex_constants::extended, 0);
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test(F(s4.begin()), F(s4.end()), std::regex_constants::extended, 2);
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test(F(s1.begin()), F(s1.end()), std::regex_constants::ECMAScript, 0);
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test(F(s2.begin()), F(s2.end()), std::regex_constants::ECMAScript, 0);
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test(F(s3.begin()), F(s3.end()), std::regex_constants::ECMAScript, 0);
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test(F(s4.begin()), F(s4.end()), std::regex_constants::ECMAScript, 2);
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test(F(s1.begin()), F(s1.end()), std::regex_constants::awk, 0);
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test(F(s2.begin()), F(s2.end()), std::regex_constants::awk, 0);
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test(F(s3.begin()), F(s3.end()), std::regex_constants::awk, 0);
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test(F(s4.begin()), F(s4.end()), std::regex_constants::awk, 2);
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test(F(s1.begin()), F(s1.end()), std::regex_constants::grep, 1);
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test(F(s2.begin()), F(s2.end()), std::regex_constants::grep, 1);
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test(F(s3.begin()), F(s3.end()), std::regex_constants::grep, 2);
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test(F(s4.begin()), F(s4.end()), std::regex_constants::grep, 0);
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test(F(s1.begin()), F(s1.end()), std::regex_constants::egrep, 0);
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test(F(s2.begin()), F(s2.end()), std::regex_constants::egrep, 0);
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test(F(s3.begin()), F(s3.end()), std::regex_constants::egrep, 0);
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test(F(s4.begin()), F(s4.end()), std::regex_constants::egrep, 2);
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}
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