Source: ../../policy/export_code_generator.hh

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// 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/export_code_generator.hh,v 1.2 2005/03/25 02:54:07 pavlin Exp $

#ifndef __POLICY_EXPORT_CODE_GENERATOR_HH__
#define __POLICY_EXPORT_CODE_GENERATOR_HH__

#include "code_generator.hh"

/**
 * @short Generates export filter code from a node structure.
 *
 * This is a specialized version of the CodeGenerator used for import filters.
 * It skips the source section of terms and replaces it with tag matching
 * instead.
 *
 */
class ExportCodeGenerator : public CodeGenerator {
public:
    /**
     * @param proto Protocol for which code will be generated.
     * @param tagstart The first policy tag to use. Tags are incremental.
     */
    ExportCodeGenerator(const string& proto, uint32_t tagstart);

    const Element* visit_term(Term& term);

    /**
     * @return The current policy-tag. Which is 1 + last tag used.
     *
     */
    uint32_t currtag();

private:
    uint32_t _currtag;
};

#endif // __POLICY_EXPORT_CODE_GENERATOR_HH__