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