Source: ../../rtrmgr/unexpanded_xrl.hh

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// -*- c-basic-offset: 4; tab-width: 8; indent-tabs-mode: t -*-

// Copyright (c) 2001-2003 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/rtrmgr/unexpanded_xrl.hh,v 1.4 2003/05/04 06:25:21 mjh Exp $

#ifndef __RTRMGR_UNEXPANDED_XRL_HH__
#define __RTRMGR_UNEXPANDED_XRL_HH__

#include <string>
#include "libxipc/xrl_router.hh"
#include "libxipc/xrl_pf_sudp.hh"

class ConfigTreeNode;
class XrlAction;

//We want to build a queue of XRLs, but the variables needed for those
//XRLs may depend on the results from previous XRLs.  So we need to
//delay expanding them until we're actually going to send the XRL
//request.

class UnexpandedXrl {
public:
    UnexpandedXrl(const ConfigTreeNode& node,
		  const XrlAction& action);
    ~UnexpandedXrl();
    Xrl* expand() const;
    string return_spec() const;
    string str() const;
private:
    const ConfigTreeNode& _node;
    const XrlAction& _action;

    //_xrl is mutable because expanding the XRL doesn't conceptually
    //change the UnexpandedXrl - storing the result here is purely an
    //optimization.
    mutable Xrl *_xrl;
};

#endif // __RTRMGR_UNEXPANDED_XRL_HH__