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