/Src/Dependencies/Boost/boost/variant/bad_visit.hpp

 1//-----------------------------------------------------------------------------
 2// boost variant/bad_visit.hpp header file
 3// See http://www.boost.org for updates, documentation, and revision history.
 4//-----------------------------------------------------------------------------
 5//
 6// Copyright (c) 2002-2003
 7// Eric Friedman
 8//
 9// Distributed under the Boost Software License, Version 1.0. (See
10// accompanying file LICENSE_1_0.txt or copy at
11// http://www.boost.org/LICENSE_1_0.txt)
12
13#ifndef BOOST_VARIANT_BAD_VISIT_HPP
14#define BOOST_VARIANT_BAD_VISIT_HPP
15
16#include <exception>
17
18namespace boost {
19
20//////////////////////////////////////////////////////////////////////////
21// class bad_visit
22//
23// Exception thrown when a visitation attempt via apply_visitor fails due
24// to invalid visited subtype or contents.
25//
26struct bad_visit
27    : std::exception
28{
29public: // std::exception interface
30
31    virtual const char * what() const throw()
32    {
33        return "boost::bad_visit: "
34               "failed visitation using boost::apply_visitor";
35    }
36
37};
38
39} // namespace boost
40
41#endif // BOOST_VARIANT_BAD_VISIT_HPP