RecursiveProductionsDetections.java

/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
 * This file is part of SableCC.                             *
 * See the file "LICENSE" for copyright information and the  *
 * terms and conditions for copying, distribution and        *
 * modification of SableCC.                                  *
 * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */

package org.sablecc.sablecc;

import org.sablecc.sablecc.analysis.*;
import org.sablecc.sablecc.node.*;

import java.util.LinkedList;

@SuppressWarnings({"rawtypes", "unchecked"})
public class RecursiveProductionsDetections extends DepthFirstAdapter {
    public LinkedList listOfRecursiveProds = new TypedLinkedList(StringCast.instance);
    private String currentProd;

    @Override
    public void caseAProd(AProd node) {
        currentProd = node.getId().getText();
        if (!node.getId().getText().startsWith("$")) {
            Object[] alts = node.getAlts().toArray();

            for (int i = 0; i < alts.length; i++) {
                ((PAlt) alts[i]).apply(this);
            }
        } else {
            listOfRecursiveProds.add(ResolveIds.name(currentProd));
        }
    }

    @Override
    public void caseAAlt(AAlt node) {
        Object temp[] = node.getElems().toArray();
        for (int i = 0; i < temp.length; i++) {
            ((PElem) temp[i]).apply(this);
        }
    }
  /*
  public void caseAIgnoredAlt(AIgnoredAlt node)
  {
  Object temp[] = node.getElems().toArray();
  for(int i = 0; i < temp.length; i++)
  {
    ((PElem) temp[i]).apply(this);
  }
  }
  */

    @Override
    public void caseAElem(AElem node) {
        if (node.getId().getText().equals(currentProd)) {
            if (node.getSpecifier() != null && node.getSpecifier() instanceof ATokenSpecifier) {
                return;
            }
            if (!listOfRecursiveProds.contains(ResolveIds.name(currentProd))) {
                listOfRecursiveProds.add(ResolveIds.name(currentProd));
            }
        }
    }
}