action.cxx

Vovida 社区开源的 SIP 协议源码

/* ====================================================================
 * The Vovida Software License, Version 1.0 
 * 
 * Copyright (c) 2000 Vovida Networks, Inc.  All rights reserved.
 * 
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in
 *    the documentation and/or other materials provided with the
 *    distribution.
 * 
 * 3. The names "VOCAL", "Vovida Open Communication Application Library",
 *    and "Vovida Open Communication Application Library (VOCAL)" must
 *    not be used to endorse or promote products derived from this
 *    software without prior written permission. For written
 *    permission, please contact [e-mail].
 *
 * 4. Products derived from this software may not be called "VOCAL", nor
 *    may "VOCAL" appear in their name, without prior written
 *    permission of Vovida Networks, Inc.
 * 
 * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESSED OR IMPLIED
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 * ====================================================================
 * 
 * This software consists of voluntary contributions made by Vovida
 * Networks, Inc. and many individuals on behalf of Vovida Networks,
 * Inc.  For more information on Vovida Networks, Inc., please see
 * <http://www.vovida.org/>.
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 */


static const char* const Action_cxx_Version = 
    "$Id: Action.cxx,v 1.3 2001/08/10 04:02:04 icahoon Exp $";


#include "global.h"
#include "Action.hxx"


using namespace Vocal;
using Behavioral::Action;
using Behavioral::Stimulus;


Action::Action()
    :	myNextAction(0)
{
}


Action::~Action()
{
}


ReturnCode
Action::action() throw ()
{
    if ( onAction() == SUCCESS )
    {
	if ( myNextAction != 0 )
	{
    	    return( myNextAction->action() );
	}
    }
    return ( !SUCCESS );
}


ReturnCode
Action::action(const Stimulus & stim) throw ()
{
    ReturnCode	rc = onAction(&stim);

    if ( rc == SUCCESS )
    {
	if ( myNextAction != 0 )
	{
    	    return( myNextAction->action(stim) );
	}
    }
    return ( rc );
}


void	    	
Action::chain(Action & action)
{
    myNextAction = &action;
}


ostream &       
Action::writeTo(ostream & out) const
{
    for ( const Action * action = this; action != 0; action = action->myNextAction )
    {
    	if ( action != this )
	{
	    out << "->";
	}
	out << action->name();
    }
    
    return ( out );
}


const char *	
Action::name() const
{
    return ( "NoAction" );
}


ReturnCode
Action::onAction(const Stimulus *) throw()
{
    return ( SUCCESS );
}