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