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//=======================================================================
// Copyright 2002 Indiana University.
// Authors: Andrew Lumsdaine, Lie-Quan Lee, Jeremy G. Siek
//
// Distributed under 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)
//=======================================================================

#ifndef BOOST_GRAPH_EXCEPTION_HPP
#define BOOST_GRAPH_EXCEPTION_HPP

#include <stdexcept>
#include <string>

namespace boost {

    struct BOOST_SYMBOL_VISIBLE bad_graph : public std::invalid_argument {
        bad_graph(const std::string& what_arg)
            : std::invalid_argument(what_arg) { }
    };

    struct BOOST_SYMBOL_VISIBLE not_a_dag : public bad_graph {
        not_a_dag()
            : bad_graph("The graph must be a DAG.")
        { }
    };

    struct BOOST_SYMBOL_VISIBLE negative_edge : public bad_graph {
        negative_edge()
            : bad_graph("The graph may not contain an edge with negative weight.")
        { }
    };

    struct BOOST_SYMBOL_VISIBLE negative_cycle : public bad_graph {
        negative_cycle()
            : bad_graph("The graph may not contain negative cycles.")
        { }
    };

    struct BOOST_SYMBOL_VISIBLE not_connected : public bad_graph {
        not_connected()
            : bad_graph("The graph must be connected.")
        { }
    };

   struct BOOST_SYMBOL_VISIBLE not_complete : public bad_graph {
       not_complete()
           : bad_graph("The graph must be complete.")
       { }
   };

} // namespace boost

#endif // BOOST_GRAPH_EXCEPTION_HPP