| /*============================================================================= |
| Copyright (c) 1998-2003 Joel de Guzman |
| http://spirit.sourceforge.net/ |
| |
| Use, modification and distribution is subject to 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) |
| =============================================================================*/ |
| /////////////////////////////////////////////////////////////////////////////// |
| // |
| // This sample demonstrates error handling as seen in the |
| // Error Handling" chapter in the User's Guide. |
| // |
| /////////////////////////////////////////////////////////////////////////////// |
| #include <boost/spirit/include/classic_core.hpp> |
| #include <boost/spirit/include/classic_exceptions.hpp> |
| #include <iostream> |
| #include <cassert> |
| |
| using namespace std; |
| using namespace BOOST_SPIRIT_CLASSIC_NS; |
| |
| struct handler |
| { |
| template <typename ScannerT, typename ErrorT> |
| error_status<> |
| operator()(ScannerT const& /*scan*/, ErrorT const& /*error*/) const |
| { |
| cout << "exception caught...Test concluded successfully" << endl; |
| return error_status<>(error_status<>::fail); |
| } |
| }; |
| |
| int |
| main() |
| { |
| cout << "/////////////////////////////////////////////////////////\n\n"; |
| cout << "\t\tExceptions Test...\n\n"; |
| cout << "/////////////////////////////////////////////////////////\n\n"; |
| |
| assertion<int> expect(0); |
| guard<int> my_guard; |
| |
| rule<> start = |
| my_guard(ch_p('a') >> 'b' >> 'c' >> expect( ch_p('d') )) |
| [ |
| handler() |
| ]; |
| |
| bool r = parse("abcx", start).full; |
| |
| assert(!r); |
| return 0; |
| } |
| |