| 1 | /*============================================================================== |
|---|---|
| 2 | Copyright (c) 2001-2011 Hartmut Kaiser |
| 3 | Copyright (c) 2001-2011 Joel de Guzman |
| 4 | Copyright (c) 2010-2011 Bryce Lelbach |
| 5 | |
| 6 | Distributed under the Boost Software License, Version 1.0. (See accompanying |
| 7 | file BOOST_LICENSE_1_0.rst or copy at http://www.boost.org/LICENSE_1_0.txt) |
| 8 | ==============================================================================*/ |
| 9 | |
| 10 | #include <boost/spirit/include/support_istream_iterator.hpp> |
| 11 | #include <boost/spirit/include/support_line_pos_iterator.hpp> |
| 12 | #include <boost/spirit/include/qi_parse.hpp> |
| 13 | |
| 14 | #include "sexpr_parser.hpp" |
| 15 | |
| 16 | int |
| 17 | main() |
| 18 | { |
| 19 | using boost::spirit::qi::phrase_parse; |
| 20 | |
| 21 | std::cout << "/////////////////////////////////////////////////////////\n\n"; |
| 22 | std::cout << "sexpr parser...\n\n"; |
| 23 | std::cout << "/////////////////////////////////////////////////////////\n\n"; |
| 24 | std::cout << "Type an expression... or [q or Q] to quit\n\n"; |
| 25 | |
| 26 | typedef std::string::const_iterator iterator_type; |
| 27 | typedef sexpr::parser<iterator_type> parser; |
| 28 | typedef sexpr::whitespace<iterator_type> space; |
| 29 | |
| 30 | parser p; |
| 31 | space ws; |
| 32 | |
| 33 | std::string str; |
| 34 | while (std::getline(is&: std::cin, str&: str)) |
| 35 | { |
| 36 | if (str.empty() || str[0] == 'q' || str[0] == 'Q') |
| 37 | break; |
| 38 | |
| 39 | std::string::const_iterator iter = str.begin(); |
| 40 | std::string::const_iterator end = str.end(); |
| 41 | bool r = phrase_parse(first&: iter, last: end, expr&: p, skipper: ws); |
| 42 | |
| 43 | if (r && iter == end) |
| 44 | { |
| 45 | std::cout << "-------------------------\n"; |
| 46 | std::cout << "Parsing succeeded\n"; |
| 47 | std::cout << "-------------------------\n"; |
| 48 | } |
| 49 | else |
| 50 | { |
| 51 | std::string rest(iter, end); |
| 52 | std::cout << "-------------------------\n"; |
| 53 | std::cout << "Parsing failed\n"; |
| 54 | std::cout << "stopped at: \": "<< rest << "\"\n"; |
| 55 | std::cout << "-------------------------\n"; |
| 56 | } |
| 57 | } |
| 58 | |
| 59 | std::cout << "Bye... :-) \n\n"; |
| 60 | return 0; |
| 61 | } |
| 62 | |
| 63 |