de.uka.ilkd.key.strategy.feature

Class ComprehendedSumFeature

java.lang.Object

de.uka.ilkd.key.strategy.feature.ComprehendedSumFeature

All Implemented Interfaces:

Feature

public class ComprehendedSumFeature
extends java.lang.Object
implements Feature

A feature that computes the sum of the values of a feature term when a given variable ranges over a sequence of terms

Field Summary

Fields

Modifier and Type	Field and Description
private Feature	body
private TermGenerator	generator
private TermBuffer	var

Constructor Summary

Constructors

Modifier	Constructor and Description
private	ComprehendedSumFeature(TermBuffer var, TermGenerator generator, Feature body)

Method Summary

Modifier and Type	Method and Description
RuleAppCost	computeCost(RuleApp app, PosInOccurrence pos, Goal goal) Evaluate the cost of a RuleApp.
static Feature	create(TermBuffer var, TermGenerator generator, Feature body)

Methods inherited from class java.lang.Object

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

Field Detail

var

private final TermBuffer var

generator

private final TermGenerator generator

body

private final Feature body

Constructor Detail

ComprehendedSumFeature

private ComprehendedSumFeature(TermBuffer var,
                               TermGenerator generator,
                               Feature body)

Method Detail

create

public static Feature create(TermBuffer var,
                             TermGenerator generator,
                             Feature body)

Parameters:

var - TermBuffer in which the terms are going to be stored

generator - the terms that are to be iterated over

body - a feature that is supposed to be evaluated repeatedly for the possible values of var

computeCost

public RuleAppCost computeCost(RuleApp app,
                               PosInOccurrence pos,
                               Goal goal)

Description copied from interface: Feature

Evaluate the cost of a RuleApp.

Specified by:

computeCost in interface Feature

Parameters:

app - the RuleApp

pos - position where app is to be applied

goal - the goal on which app is to be applied

Returns:

the cost of the rule application expressed as a RuleAppCost object. TopRuleAppCost.INSTANCE indicates that the rule shall not be applied at all (it is discarded by the strategy).