ptolemy.domains.modal.kernel

Class AbstractActionsAttribute

java.lang.Object

ptolemy.kernel.util.NamedObj

ptolemy.kernel.util.Attribute

ptolemy.kernel.util.AbstractSettableAttribute

ptolemy.kernel.util.StringAttribute

ptolemy.domains.modal.kernel.Action

ptolemy.domains.modal.kernel.AbstractActionsAttribute

All Implemented Interfaces:

java.lang.Cloneable, HasTypeConstraints, Changeable, Debuggable, DebugListener, Derivable, ModelErrorHandler, MoMLExportable, Moveable, Nameable, Settable

Direct Known Subclasses:

ActionsAttribute, CommitActionsAttribute, OutputActionsAttribute

public abstract class AbstractActionsAttribute
extends Action
implements HasTypeConstraints

A base class for actions with semicolon delimited lists of commands.

The value of this attribute is a semicolon separated list of commands, where each command gives a destination to send data to and a value to send. The actions are given by calling setExpression() with a string of the form:

 command; command; ...
 

where each command has the form:

 destination = expression
 

where destination is either

 name
 

or

 name(number)
 

The expression is a string giving an expression in the usual Ptolemy II expression language. The expression may include references to variables and parameters contained by the FSM actor.

Since:

Ptolemy II 8.0

Version:

$Id$

Author:

Xiaojun Liu and Edward A. Lee

See Also:

CommitActionsAttribute, Transition, FSMActor

Pt.AcceptedRating:

Red (eal)

Pt.ProposedRating:

Yellow (eal)

Nested Class Summary

Nested classes/interfaces inherited from class ptolemy.kernel.util.NamedObj

NamedObj.ContainedObjectsIterator

Nested classes/interfaces inherited from interface ptolemy.kernel.util.Settable

Settable.Visibility

Field Summary

Fields

Modifier and Type	Field and Description
protected java.util.List	_destinationNames List of destination names.
protected java.util.List	_destinations List of destinations.
protected long	_destinationsListVersion The workspace version number when the _destinations list is last updated.
protected ParseTreeEvaluator	_parseTreeEvaluator The parse tree evaluator.
protected java.util.List	_parseTrees The list of parse trees.

Fields inherited from class ptolemy.kernel.util.NamedObj

_changeListeners, _changeLock, _changeRequests, _debugging, _debugListeners, _deferChangeRequests, _elementName, _isPersistent, _verbose, _workspace, ATTRIBUTES, CLASSNAME, COMPLETE, CONTENTS, DEEP, FULLNAME, LINKS

Fields inherited from interface ptolemy.kernel.util.Settable

EXPERT, FULL, NONE, NOT_EDITABLE

Constructor Summary

Constructors

Constructor and Description
AbstractActionsAttribute(NamedObj container, java.lang.String name) Construct an action with the given name contained by the specified container (which should be a Transition when used in the FSM domain, and an Event in the Ptera domain).
AbstractActionsAttribute(Workspace workspace) Construct an action in the specified workspace with an empty string as a name.

Method Summary

Modifier and Type	Method and Description
protected abstract NamedObj	_getDestination(java.lang.String name) Given a destination name, return a NamedObj that matches that destination.
protected ParserScope	_getParserScope() Return a parser scope used to evaluate or type-check this action.
java.lang.Object	clone(Workspace workspace) Clone the actor into the specified workspace.
void	execute() Execute this action.
java.util.List	getChannelNumberList() Return the list of channel numbers given in expression set for this attribute.
NamedObj	getDestination(java.lang.String name) Return the destination object referred to by the given name.
java.util.List	getDestinationNameList() Return the list of destination names given in expression set for this attribute.
java.util.List	getDestinations() Return the list of destinations of assignments in this action.
java.lang.String	getExpression(java.lang.String name) Return the expression referred to by the given name.
ASTPtRootNode	getParseTree(java.lang.String name) Return the parse tree referred to by the given name.
java.util.List	getParseTreeList() Return the list of parse trees given in expression set for this attribute.
boolean	isChannelSpecified(java.lang.String name) Test if a channel number is associated with the given name.
void	setExpression(java.lang.String expression) Set the action and notify the container that the action has changed by calling attributeChanged(), and notify any listeners that have been registered using addValueListener().
java.lang.String	toString() Give a descriptive string.
java.util.Set<Inequality>	typeConstraints() Return the type constraints of this object.

Methods inherited from class ptolemy.domains.modal.kernel.Action

setContainer

Methods inherited from class ptolemy.kernel.util.StringAttribute

_propagateValue, addValueListener, exportMoML, getExpression, getVisibility, removeValueListener, setVisibility, validate

Methods inherited from class ptolemy.kernel.util.AbstractSettableAttribute

getDefaultExpression, getValueAsString

Methods inherited from class ptolemy.kernel.util.Attribute

_checkContainer, _getContainedObject, _propagateExistence, getContainer, moveDown, moveToFirst, moveToIndex, moveToLast, moveUp, setName, updateContent

Methods inherited from class ptolemy.kernel.util.NamedObj

_addAttribute, _adjustOverride, _attachText, _cloneFixAttributeFields, _containedDecorators, _copyChangeRequestList, _debug, _debug, _debug, _debug, _debug, _description, _executeChangeRequests, _exportMoMLContents, _getIndentPrefix, _isMoMLSuppressed, _markContentsDerived, _notifyHierarchyListenersAfterChange, _notifyHierarchyListenersBeforeChange, _removeAttribute, _splitName, _stripNumericSuffix, _validateSettables, addChangeListener, addDebugListener, addHierarchyListener, attributeChanged, attributeDeleted, attributeList, attributeList, attributeTypeChanged, clone, containedObjectsIterator, decorators, deepContains, depthInHierarchy, description, description, event, executeChangeRequests, exportMoML, exportMoML, exportMoML, exportMoML, exportMoMLPlain, getAttribute, getAttribute, getAttributes, getChangeListeners, getClassName, getDecoratorAttribute, getDecoratorAttributes, getDerivedLevel, getDerivedList, getDisplayName, getElementName, getFullName, getModelErrorHandler, getName, getName, getPrototypeList, getSource, handleModelError, isDeferringChangeRequests, isOverridden, isPersistent, lazyContainedObjectsIterator, message, notifyOfNameChange, propagateExistence, propagateValue, propagateValues, removeAttribute, removeChangeListener, removeDebugListener, removeHierarchyListener, requestChange, setClassName, setDeferringChangeRequests, setDerivedLevel, setDisplayName, setModelErrorHandler, setPersistent, setSource, sortContainedObjects, toplevel, uniqueName, validateSettables, workspace

Methods inherited from class java.lang.Object

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

Methods inherited from interface ptolemy.kernel.util.Settable

getDisplayName

Methods inherited from interface ptolemy.kernel.util.Nameable

description, getContainer, getFullName, getName, getName, setName

Field Detail

_destinationNames

protected java.util.List _destinationNames

List of destination names.

_destinations

protected java.util.List _destinations

List of destinations.

_destinationsListVersion

protected long _destinationsListVersion

The workspace version number when the _destinations list is last updated.

_parseTreeEvaluator

protected ParseTreeEvaluator _parseTreeEvaluator

The parse tree evaluator.

_parseTrees

protected java.util.List _parseTrees

The list of parse trees.

Constructor Detail

AbstractActionsAttribute

public AbstractActionsAttribute(NamedObj container,
                                java.lang.String name)
                         throws IllegalActionException,
                                NameDuplicationException

Construct an action with the given name contained by the specified container (which should be a Transition when used in the FSM domain, and an Event in the Ptera domain). The container argument must not be null, or a NullPointerException will be thrown. This action will use the workspace of the container for synchronization and version counts. If the name argument is null, then the name is set to the empty string. This increments the version of the workspace.

Parameters:

container - The container that contains this action.

name - The name of this action.

Throws:

IllegalActionException - If the action is not of an acceptable class for the container, or if the name contains a period.

NameDuplicationException - If the container already has an attribute with the name.

AbstractActionsAttribute

public AbstractActionsAttribute(Workspace workspace)

Construct an action in the specified workspace with an empty string as a name. The object is added to the directory of the workspace. Increment the version number of the workspace.

Parameters:

workspace - The workspace that will list the attribute.

Method Detail

clone

public java.lang.Object clone(Workspace workspace)
                       throws java.lang.CloneNotSupportedException

Clone the actor into the specified workspace. This calls the base class and then sets the attribute public members to refer to the attributes of the new actor.

Overrides:

clone in class StringAttribute

Parameters:

workspace - The workspace for the new actor.

Returns:

A new FSMActor.

Throws:

java.lang.CloneNotSupportedException - If a derived class contains an attribute that cannot be cloned.

See Also:

NamedObj.exportMoML(Writer, int, String), NamedObj.setDeferringChangeRequests(boolean)

execute

public void execute()
             throws IllegalActionException

Execute this action. For each destination identified in the action, compute the value in the action and perform the particular assignment. This method should be extended by derived classes to perform the evaluation and assignment as appropriate.

Specified by:

execute in class Action

Throws:

IllegalActionException - If a destination is not found.

getChannelNumberList

public java.util.List getChannelNumberList()
                                    throws IllegalActionException

Return the list of channel numbers given in expression set for this attribute. If no destinations are specified, then return an empty list.

Returns:

the list of channel numbers.

Throws:

IllegalActionException - If thrown while evaluating the channel numbers.

getDestination

public NamedObj getDestination(java.lang.String name)
                        throws IllegalActionException

Return the destination object referred to by the given name. Depending on the subclass of this class, this might be a variable, or an output port.

Parameters:

name - The name of the destination object.

Returns:

The destination object with the given name.

Throws:

IllegalActionException - If the given name is not a valid destination for this action.

getDestinations

public java.util.List getDestinations()
                               throws IllegalActionException

Return the list of destinations of assignments in this action.

Specified by:

getDestinations in class Action

Returns:

A list of IOPort for output actions, and a list of parameters for set actions.

Throws:

IllegalActionException - If the destination list cannot be constructed.

getDestinationNameList

public java.util.List getDestinationNameList()

Return the list of destination names given in expression set for this attribute. If no destinations are specified, then return an empty list.

Returns:

the list of destination names.

getExpression

public java.lang.String getExpression(java.lang.String name)

Return the expression referred to by the given name. When the action is executed, this expression will be evaluated and assigned to the object associated with the name.

Parameters:

name - The name of an expression.

Returns:

The expression referred to by the given name.

See Also:

setExpression(java.lang.String)

getParseTree

public ASTPtRootNode getParseTree(java.lang.String name)

Return the parse tree referred to by the given name.

Parameters:

name - The name of a parse tree.

Returns:

The parse tree referred to by the given name.

getParseTreeList

public java.util.List getParseTreeList()

Return the list of parse trees given in expression set for this attribute. If no destinations are specified, then return an empty list.

Returns:

the list of parse trees.

isChannelSpecified

public boolean isChannelSpecified(java.lang.String name)

Test if a channel number is associated with the given name.

Parameters:

name - The channel name.

Returns:

true If a channel was specified.

setExpression

public void setExpression(java.lang.String expression)
                   throws IllegalActionException

Set the action and notify the container that the action has changed by calling attributeChanged(), and notify any listeners that have been registered using addValueListener().

Specified by:

setExpression in interface Settable

Overrides:

setExpression in class StringAttribute

Parameters:

expression - The action.

Throws:

IllegalActionException - If the change is not acceptable to the container, or if the action is syntactically incorrect.

See Also:

getExpression(java.lang.String)

toString

public java.lang.String toString()

Give a descriptive string.

Overrides:

toString in class NamedObj

Returns:

The expression.

typeConstraints

public java.util.Set<Inequality> typeConstraints()

Return the type constraints of this object. The constraints are a set of inequalities.

Specified by:

typeConstraints in interface HasTypeConstraints

Returns:

a list of instances of Inequality.

See Also:

Inequality

_getDestination

protected abstract NamedObj _getDestination(java.lang.String name)
                                     throws IllegalActionException

Given a destination name, return a NamedObj that matches that destination. An implementation of this method should never return null (throw an exception instead).

Parameters:

name - The name of the destination, or null if none is found.

Returns:

An object (like a port or a variable) with the specified name.

Throws:

IllegalActionException - If the associated FSMActor does not have a destination with the specified name.

_getParserScope

protected ParserScope _getParserScope()

Return a parser scope used to evaluate or type-check this action.

Returns:

The parser scope.