package aima.core.logic.fol.inference.proof;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
/**
* @author Ciaran O'Reilly
*
*/
public class ProofStepRenaming extends AbstractProofStep {
private List<ProofStep> predecessors = new ArrayList<ProofStep>();
private Object proof = "";
public ProofStepRenaming(Object proof, ProofStep predecessor) {
this.proof = proof;
this.predecessors.add(predecessor);
}
//
// START-ProofStep
@Override
public List<ProofStep> getPredecessorSteps() {
return Collections.unmodifiableList(predecessors);
}
@Override
public String getProof() {
return proof.toString();
}
@Override
public String getJustification() {
return "Renaming of " + predecessors.get(0).getStepNumber();
}
// END-ProofStep
//
}