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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 bad_graph : public std::invalid_argument {
bad_graph(const std::string& what_arg)
: std::invalid_argument(what_arg) { }
};
struct not_a_dag : public bad_graph {
not_a_dag()
: bad_graph("The graph must be a DAG.")
{ }
};
struct negative_edge : public bad_graph {
negative_edge()
: bad_graph("The graph may not contain an edge with negative weight.")
{ }
};
struct negative_cycle : public bad_graph {
negative_cycle()
: bad_graph("The graph may not contain negative cycles.")
{ }
};
struct not_connected : public bad_graph {
not_connected()
: bad_graph("The graph must be connected.")
{ }
};
struct not_complete : public bad_graph {
not_complete()
: bad_graph("The graph must be complete.")
{ }
};
} // namespace boost
#endif // BOOST_GRAPH_EXCEPTION_HPP