Package net.ssehub.easy.reasoning.sseReasoner.model

Class VariablesInConstraintFinder

java.lang.Object

net.ssehub.easy.varModel.model.filter.AbstractVariableInConstraintFinder

net.ssehub.easy.varModel.model.filter.AbstractStateVariablesInConstraintFinder

net.ssehub.easy.reasoning.sseReasoner.model.VariablesInConstraintFinder

All Implemented Interfaces:

IConstraintTreeVisitor

public class VariablesInConstraintFinder
extends AbstractStateVariablesInConstraintFinder

Searches for used IDecisionVariables and their states inside a ConstraintSyntaxTree. For reuse, call AbstractStateVariablesInConstraintFinder.setConfiguration(Configuration) first, then visit the respective constraint, call one of the getters to obtain the result, e.g., isConstraintFrozen() and finally clear().

Author:

El-Sharkawy, Holger Eichelberger

Field Summary

Fields

Modifier and Type	Field	Description
private int	frozenVariablesCount
private int	localVariablesCount
private int	variablesCount

Constructor Summary

Constructors

Constructor	Description
VariablesInConstraintFinder()	Creates a constraint finder for reuse.
VariablesInConstraintFinder(ConstraintSyntaxTree cst, Configuration config)	Creates a constraint finder for single use directly on cst.

Method Summary

Modifier and Type	Method	Description
protected void	addVariable(IDecisionVariable var)	Adds the related IDecisionVariable and their state to the result.
void	clear()	Clears this visitor for reuse.
int	getFrozenVariablesCount()	Returns the number of frozen variables used in the visited constraint.
int	getLocalVariablesCount()	Returns the number of local variables used in the visited constraint.
int	getVariablesCount()	Returns the number of variables used in the visited constraint.
boolean	isConstraintFrozen()	Returns whether there are only local variables and frozen variables in the visited constraint.

Methods inherited from class net.ssehub.easy.varModel.model.filter.AbstractStateVariablesInConstraintFinder

addVariable, getConfiguration, getEvaluator, setConfiguration, visitAnnotationVariable, visitCompoundAccess, visitContainerOperationCall, visitLet, visitVariable

Methods inherited from class net.ssehub.easy.varModel.model.filter.AbstractVariableInConstraintFinder

visitBlockExpression, visitComment, visitCompoundInitializer, visitConstantValue, visitContainerInitializer, visitIfThen, visitMultiAndExpression, visitOclFeatureCall, visitParenthesis, visitSelf, visitUnresolvedExpression, visitValue

Methods inherited from class java.lang.Object

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

Field Detail

variablesCount

private int variablesCount

frozenVariablesCount

private int frozenVariablesCount

localVariablesCount

private int localVariablesCount

Constructor Detail

VariablesInConstraintFinder

public VariablesInConstraintFinder()

Creates a constraint finder for reuse. Call AbstractStateVariablesInConstraintFinder.setConfiguration(Configuration) first, accept then the constraint to be analyzed and call clear() afterwards to make the visitor instance ready for reuse.

VariablesInConstraintFinder

public VariablesInConstraintFinder(ConstraintSyntaxTree cst,
                                   Configuration config)

Creates a constraint finder for single use directly on cst.

Parameters:

cst - A constraint where all nested IDecisionVariable's should be found.

config - The related Configuration of the project to where the cst belongs to (must not be null).

Method Detail

clear

public void clear()

Clears this visitor for reuse.

Overrides:

clear in class AbstractStateVariablesInConstraintFinder

getFrozenVariablesCount

public int getFrozenVariablesCount()

Returns the number of frozen variables used in the visited constraint.

Returns:

the number of variables

getLocalVariablesCount

public int getLocalVariablesCount()

Returns the number of local variables used in the visited constraint.

Returns:

the number of variables

getVariablesCount

public int getVariablesCount()

Returns the number of variables used in the visited constraint.

Returns:

the number of variables

isConstraintFrozen

public boolean isConstraintFrozen()

Returns whether there are only local variables and frozen variables in the visited constraint.

Returns:

true for a frozen constraint, false else

addVariable

protected void addVariable(IDecisionVariable var)

Description copied from class: AbstractStateVariablesInConstraintFinder

Adds the related IDecisionVariable and their state to the result.

Specified by:

addVariable in class AbstractStateVariablesInConstraintFinder

Parameters:

var - the variable to be added, may be null, ignored then