de.uka.ilkd.key.strategy.feature

Class DiffFindAndIfFeature

java.lang.Object

de.uka.ilkd.key.strategy.feature.BinaryFeature

de.uka.ilkd.key.strategy.feature.BinaryTacletAppFeature

de.uka.ilkd.key.strategy.feature.DiffFindAndIfFeature

All Implemented Interfaces:

Feature

public class DiffFindAndIfFeature
extends BinaryTacletAppFeature

Binary feature that returns zero iff the \assumes- and find-formula of a Taclet are matched to different members of the sequent. If a taclet has more than one formula in its \assumes part, all of the must be matched to different members.

Field Summary

Fields

Modifier and Type	Field and Description
static Feature	INSTANCE the single instance of this feature

Fields inherited from class de.uka.ilkd.key.strategy.feature.BinaryFeature

TOP_COST, ZERO_COST

Constructor Summary

Constructors

Modifier	Constructor and Description
private	DiffFindAndIfFeature()

Method Summary

Modifier and Type	Method and Description
protected boolean	filter(TacletApp app, PosInOccurrence pos, Goal goal) Compute whether the result of the feature is zero (true) or infinity (false)

Methods inherited from class de.uka.ilkd.key.strategy.feature.BinaryTacletAppFeature

filter

Methods inherited from class de.uka.ilkd.key.strategy.feature.BinaryFeature

computeCost

Methods inherited from class java.lang.Object

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

Field Detail

INSTANCE

public static final Feature INSTANCE

the single instance of this feature

Constructor Detail

DiffFindAndIfFeature

private DiffFindAndIfFeature()

Method Detail

filter

protected boolean filter(TacletApp app,
                         PosInOccurrence pos,
                         Goal goal)

Description copied from class: BinaryTacletAppFeature

Compute whether the result of the feature is zero (true) or infinity (false)

Specified by:

filter in class BinaryTacletAppFeature

Parameters:

app - the TacletApp

pos - position where app is to be applied

goal - the goal on which app is to be applied

Returns:

true iff the the result of the feature is supposed to be zero.