Package ptolemy.caltrop.ddi.util

Class DataflowWithRatesActorInterpreter

java.lang.Object

ptolemy.caltrop.ddi.util.DataflowActorInterpreter

ptolemy.caltrop.ddi.util.DataflowWithRatesActorInterpreter

public class DataflowWithRatesActorInterpreter
extends DataflowActorInterpreter

This class extends the DataflowActorInterpreter, overriding the checking of preconditions to assume that input tokens are present. This interpreter is assumed to operate in a DDI where token rates are published, such as SDF and DDF.

Since:

Ptolemy II 5.2

Version:

$Id$

Author:

Steve Neuendorffer

See Also:

Actor, Action, DataflowActorInterpreter.actionSetup(caltrop.interpreter.ast.Action), actionEvaluatePrecondition(), actionStep(), DataflowActorInterpreter.actionComputeOutputs(), DataflowActorInterpreter.actionClear()

Pt.AcceptedRating:

Red (cxh)

Pt.ProposedRating:

Red (cxh)

Nested Class Summary

Nested classes/interfaces inherited from class ptolemy.caltrop.ddi.util.DataflowActorInterpreter

DataflowActorInterpreter.EnvironmentKey, DataflowActorInterpreter.MultipleTokenReaderThunk, DataflowActorInterpreter.SingleTokenReaderThunk

Field Summary

Fields inherited from class ptolemy.caltrop.ddi.util.DataflowActorInterpreter

actor, actorEnv, context, env, envAction, inputPortMap

Constructor Summary

Constructors

Constructor	Description
DataflowWithRatesActorInterpreter(caltrop.interpreter.ast.Actor actor, caltrop.interpreter.Context context, caltrop.interpreter.environment.Environment actorEnv, java.util.Map inputPortMap, java.util.Map outputPortMap)	Defines a new actor interpreter for the specified actor.

Method Summary

Modifier and Type	Method	Description
boolean	actionEvaluatePrecondition()	Evaluate the preconditions for the action and return its result.
void	actionStep()	Execute the action body, potentially changing the value of actor state variables and action-scope variables.

Methods inherited from class ptolemy.caltrop.ddi.util.DataflowActorInterpreter

actionClear, actionComputeOutputs, actionSetup, currentAction, nActions, nInitializers, setOutputPortMap

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

DataflowWithRatesActorInterpreter

public DataflowWithRatesActorInterpreter(caltrop.interpreter.ast.Actor actor,
                                         caltrop.interpreter.Context context,
                                         caltrop.interpreter.environment.Environment actorEnv,
                                         java.util.Map inputPortMap,
                                         java.util.Map outputPortMap)

Defines a new actor interpreter for the specified actor.

Parameters:

actor - The actor.

context - The interpretation context.

actorEnv - The global environment.

inputPortMap - Map from input port names to channels.

outputPortMap - Map from output port names to channels.

See Also:

InputChannel, OutputChannel

Method Detail

actionEvaluatePrecondition

public boolean actionEvaluatePrecondition()

Evaluate the preconditions for the action and return its result. If this method returns false, some condition required for the successful completion of the action is not satisfied.

Overrides:

actionEvaluatePrecondition in class DataflowActorInterpreter

Returns:

True, if the action precondition was satisfied.

Throws:

caltrop.interpreter.InterpreterException - If the evaluation of the guards could not be successfully completed.

actionStep

public void actionStep()

Execute the action body, potentially changing the value of actor state variables and action-scope variables.

Overrides:

actionStep in class DataflowActorInterpreter

Throws:

caltrop.interpreter.InterpreterException - If the action body could not be executed successfully.