sl@0: //-----------------------------------------------------------------------------
sl@0: // boost variant/bad_visit.hpp header file
sl@0: // See http://www.boost.org for updates, documentation, and revision history.
sl@0: //-----------------------------------------------------------------------------
sl@0: //
sl@0: // Copyright (c) 2002-2003
sl@0: // Eric Friedman
sl@0: //
sl@0: // Distributed under the Boost Software License, Version 1.0. (See
sl@0: // accompanying file LICENSE_1_0.txt or copy at
sl@0: // http://www.boost.org/LICENSE_1_0.txt)
sl@0: 
sl@0: #ifndef BOOST_VARIANT_BAD_VISIT_HPP
sl@0: #define BOOST_VARIANT_BAD_VISIT_HPP
sl@0: 
sl@0: #include <exception>
sl@0: 
sl@0: namespace boost {
sl@0: 
sl@0: //////////////////////////////////////////////////////////////////////////
sl@0: // class bad_visit
sl@0: //
sl@0: // Exception thrown when a visitation attempt via apply_visitor fails due
sl@0: // to invalid visited subtype or contents.
sl@0: //
sl@0: struct bad_visit
sl@0:     : std::exception
sl@0: {
sl@0: public: // std::exception interface
sl@0: 
sl@0:     virtual const char * what() const throw()
sl@0:     {
sl@0:         return "boost::bad_visit: "
sl@0:                "failed visitation using boost::apply_visitor";
sl@0:     }
sl@0: 
sl@0: };
sl@0: 
sl@0: } // namespace boost
sl@0: 
sl@0: #endif // BOOST_VARIANT_BAD_VISIT_HPP