package aima.core.logic.fol.inference.proof;
import java.util.List;
/**
* @author Ciaran O'Reilly
*
*/
public abstract class AbstractProofStep implements ProofStep {
private int step = 0;
public AbstractProofStep() {
}
//
// START-ProofStep
public int getStepNumber() {
return step;
}
public void setStepNumber(int step) {
this.step = step;
}
public abstract List<ProofStep> getPredecessorSteps();
public abstract String getProof();
public abstract String getJustification();
// END-ProofStep
//
}