45 lines
1.4 KiB
C++
45 lines
1.4 KiB
C++
// Copyright (c) 2001-2010 Hartmut Kaiser
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// Copyright (c) 2010 Head Geek
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//
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// Distributed under the Boost Software License, Version 1.0. (See accompanying
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// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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#include <iostream>
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#include <boost/detail/lightweight_test.hpp>
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#include <boost/spirit/include/qi.hpp>
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namespace qi = boost::spirit::qi;
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using qi::omit;
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using qi::repeat;
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using std::cout;
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using std::endl;
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typedef qi::rule<std::string::const_iterator, std::string()> strrule_type;
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void test(const std::string input, strrule_type rule, std::string result)
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{
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std::string target;
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std::string::const_iterator i = input.begin(), ie = input.end();
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BOOST_TEST(qi::parse(i, ie, rule, target) && target == result);
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}
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int main()
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{
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strrule_type obsolete_year =
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omit[-qi::char_(" \t")] >>
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repeat(2)[qi::digit] >>
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omit[-qi::char_(" \t")];
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strrule_type correct_year = repeat(4)[qi::digit];
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test("1776", qi::hold[correct_year] | repeat(2)[qi::digit], "1776");
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test("76", obsolete_year, "76");
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test("76", qi::hold[obsolete_year] | correct_year, "76");
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test(" 76", qi::hold[correct_year] | obsolete_year, "76");
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test("76", qi::hold[correct_year] | obsolete_year, "76");
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test("76", qi::hold[correct_year] | repeat(2)[qi::digit], "76");
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return boost::report_errors();
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}
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