xorp

instr_visitor.hh

00001 // -*- c-basic-offset: 4; tab-width: 8; indent-tabs-mode: t -*-
00002 // vim:set sts=4 ts=8:
00003 
00004 // Copyright (c) 2001-2009 XORP, Inc.
00005 //
00006 // This program is free software; you can redistribute it and/or modify
00007 // it under the terms of the GNU General Public License, Version 2, June
00008 // 1991 as published by the Free Software Foundation. Redistribution
00009 // and/or modification of this program under the terms of any other
00010 // version of the GNU General Public License is not permitted.
00011 // 
00012 // This program is distributed in the hope that it will be useful, but
00013 // WITHOUT ANY WARRANTY; without even the implied warranty of
00014 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. For more details,
00015 // see the GNU General Public License, Version 2, a copy of which can be
00016 // found in the XORP LICENSE.gpl file.
00017 // 
00018 // XORP Inc, 2953 Bunker Hill Lane, Suite 204, Santa Clara, CA 95054, USA;
00019 // http://xorp.net
00020 
00021 // $XORP: xorp/policy/backend/instr_visitor.hh,v 1.10 2008/10/02 21:58:03 bms Exp $
00022 
00023 #ifndef __POLICY_BACKEND_INSTR_VISITOR_HH__
00024 #define __POLICY_BACKEND_INSTR_VISITOR_HH__
00025 
00026 // XXX: not acyclic! [but better for compiletime "safety"].
00027 class Push;
00028 class PushSet;
00029 class OnFalseExit;
00030 class Load;
00031 class Store;
00032 class Accept;
00033 class Reject;
00034 class NaryInstr;
00035 class Next;
00036 class Subr;
00037 
00043 class InstrVisitor {
00044 public:
00045     virtual ~InstrVisitor() {}
00046 
00047     virtual void visit(Push&) = 0;
00048     virtual void visit(PushSet&) = 0;
00049     virtual void visit(OnFalseExit&) = 0;
00050     virtual void visit(Load&) = 0;
00051     virtual void visit(Store&) = 0;
00052     virtual void visit(Accept&) = 0;
00053     virtual void visit(Reject&) = 0;
00054     virtual void visit(NaryInstr&) = 0;
00055     virtual void visit(Next&) = 0;
00056     virtual void visit(Subr&) = 0;
00057 };
00058 
00059 #endif // __POLICY_BACKEND_INSTR_VISITOR_HH__
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