63 lines
2.0 KiB
C++
63 lines
2.0 KiB
C++
/*==============================================================================
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Copyright (c) 2001-2011 Hartmut Kaiser
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Copyright (c) 2001-2011 Joel de Guzman
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Copyright (c) 2010-2011 Bryce Lelbach
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Distributed under the Boost Software License, Version 1.0. (See accompanying
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file BOOST_LICENSE_1_0.rst or copy at http://www.boost.org/LICENSE_1_0.txt)
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==============================================================================*/
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#include <boost/spirit/include/support_istream_iterator.hpp>
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#include <boost/spirit/include/support_line_pos_iterator.hpp>
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#include <boost/spirit/include/qi_parse.hpp>
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#include "sexpr_parser.hpp"
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int
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main()
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{
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using boost::spirit::qi::phrase_parse;
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std::cout << "/////////////////////////////////////////////////////////\n\n";
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std::cout << "sexpr parser...\n\n";
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std::cout << "/////////////////////////////////////////////////////////\n\n";
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std::cout << "Type an expression... or [q or Q] to quit\n\n";
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typedef std::string::const_iterator iterator_type;
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typedef sexpr::parser<iterator_type> parser;
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typedef sexpr::whitespace<iterator_type> space;
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parser p;
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space ws;
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std::string str;
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while (std::getline(std::cin, str))
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{
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if (str.empty() || str[0] == 'q' || str[0] == 'Q')
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break;
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std::string::const_iterator iter = str.begin();
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std::string::const_iterator end = str.end();
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bool r = phrase_parse(iter, end, p, ws);
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if (r && iter == end)
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{
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std::cout << "-------------------------\n";
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std::cout << "Parsing succeeded\n";
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std::cout << "-------------------------\n";
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}
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else
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{
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std::string rest(iter, end);
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std::cout << "-------------------------\n";
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std::cout << "Parsing failed\n";
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std::cout << "stopped at: \": " << rest << "\"\n";
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std::cout << "-------------------------\n";
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}
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}
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std::cout << "Bye... :-) \n\n";
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return 0;
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}
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