Source: ../../policy/visitor_setdep.hh
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// -*- c-basic-offset: 4; tab-width: 8; indent-tabs-mode: t -*-
// vim:set sts=4 ts=8:
// Copyright (c) 2001-2005 International Computer Science Institute
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the "Software")
// to deal in the Software without restriction, subject to the conditions
// listed in the XORP LICENSE file. These conditions include: you must
// preserve this copyright notice, and you cannot mention the copyright
// holders in advertising related to the Software without their permission.
// The Software is provided WITHOUT ANY WARRANTY, EXPRESS OR IMPLIED. This
// notice is a summary of the XORP LICENSE file; the license in that file is
// legally binding.
// $XORP: xorp/policy/visitor_setdep.hh,v 1.3 2005/07/15 02:27:07 abittau Exp $
#ifndef __POLICY_VISITOR_SETDEP_HH__
#define __POLICY_VISITOR_SETDEP_HH__
#include "policy/common/policy_exception.hh"
#include "visitor.hh"
#include "set_map.hh"
#include "policy_statement.hh"
#include "node.hh"
#include <string>
/**
* @short This visitor is used to check what sets a policy uses.
*
* This is useful for set dependancy tracking.
*/
class VisitorSetDep : public Visitor {
public:
/**
* @short Semantic error thrown if set is not found.
*/
class sem_error : public PolicyException {
public:
sem_error(const string& err) : PolicyException(err) {}
};
/**
* @param setmap The setmap used.
*/
VisitorSetDep(SetMap& setmap);
const Element* visit(PolicyStatement& policy);
const Element* visit(Term& term);
const Element* visit(NodeUn& node);
const Element* visit(NodeBin& node);
const Element* visit(NodeAssign& node);
const Element* visit(NodeVar& node);
const Element* visit(NodeSet& node);
const Element* visit(NodeElem& node);
const Element* visit(NodeAccept& node);
const Element* visit(NodeReject& node);
const Element* visit(NodeProto& node);
/**
* @return the sets used by the policy.
*/
const set<string>& sets() const {
return _sets;
}
private:
SetMap& _setmap;
set<string> _sets;
};
#endif // __POLICY_VISITOR_SETDEP_HH__
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