56 lines
1.7 KiB
C++
56 lines
1.7 KiB
C++
/*=============================================================================
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Copyright (c) 1998-2003 Joel de Guzman
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http://spirit.sourceforge.net/
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Use, modification and distribution is subject to the Boost Software
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License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
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http://www.boost.org/LICENSE_1_0.txt)
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=============================================================================*/
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///////////////////////////////////////////////////////////////////////////////
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//
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// This sample demonstrates error handling as seen in the
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// Error Handling" chapter in the User's Guide.
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//
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///////////////////////////////////////////////////////////////////////////////
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#include <boost/spirit/include/classic_core.hpp>
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#include <boost/spirit/include/classic_exceptions.hpp>
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#include <iostream>
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#include <boost/assert.hpp>
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using namespace std;
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using namespace BOOST_SPIRIT_CLASSIC_NS;
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struct handler
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{
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template <typename ScannerT, typename ErrorT>
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error_status<>
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operator()(ScannerT const& /*scan*/, ErrorT const& /*error*/) const
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{
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cout << "exception caught...Test concluded successfully" << endl;
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return error_status<>(error_status<>::fail);
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}
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};
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int
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main()
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{
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cout << "/////////////////////////////////////////////////////////\n\n";
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cout << "\t\tExceptions Test...\n\n";
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cout << "/////////////////////////////////////////////////////////\n\n";
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assertion<int> expect(0);
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guard<int> my_guard;
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rule<> start =
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my_guard(ch_p('a') >> 'b' >> 'c' >> expect( ch_p('d') ))
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[
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handler()
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];
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bool r = parse("abcx", start).full;
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BOOST_ASSERT(!r);
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return 0;
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}
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