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A Java Optimization Framework

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package soot.dava.internal.AST;

/*-
 * #%L
 * Soot - a J*va Optimization Framework
 * %%
 * Copyright (C) 2003 Jerome Miecznikowski
 * Copyright (C) 2005 Nomair A. Naeem
 * %%
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as
 * published by the Free Software Foundation, either version 2.1 of the
 * License, or (at your option) any later version.
 * 
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Lesser Public License for more details.
 * 
 * You should have received a copy of the GNU General Lesser Public
 * License along with this program.  If not, see
 * .
 * #L%
 */

import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;

import soot.AbstractUnit;
import soot.UnitPrinter;
import soot.dava.toolkits.base.AST.ASTAnalysis;
import soot.dava.toolkits.base.AST.analysis.Analysis;

public abstract class ASTNode extends AbstractUnit {
  public static final String TAB = "    ", NEWLINE = "\n";

  protected List subBodies;

  public ASTNode() {
    subBodies = new ArrayList();
  }

  public abstract void toString(UnitPrinter up);

  protected void body_toString(UnitPrinter up, List body) {
    Iterator it = body.iterator();
    while (it.hasNext()) {
      ((ASTNode) it.next()).toString(up);

      if (it.hasNext()) {
        up.newline();
      }
    }
  }

  protected String body_toString(List body) {
    StringBuffer b = new StringBuffer();

    Iterator it = body.iterator();
    while (it.hasNext()) {
      b.append(((ASTNode) it.next()).toString());

      if (it.hasNext()) {
        b.append(NEWLINE);
      }
    }

    return b.toString();
  }

  public List get_SubBodies() {
    return subBodies;
  }

  public abstract void perform_Analysis(ASTAnalysis a);

  protected void perform_AnalysisOnSubBodies(ASTAnalysis a) {
    Iterator sbit = subBodies.iterator();
    while (sbit.hasNext()) {
      Object subBody = sbit.next();
      Iterator it = null;

      if (this instanceof ASTTryNode) {
        it = ((List) ((ASTTryNode.container) subBody).o).iterator();
      } else {
        it = ((List) subBody).iterator();
      }

      while (it.hasNext()) {
        ((ASTNode) it.next()).perform_Analysis(a);
      }
    }

    a.analyseASTNode(this);
  }

  public boolean fallsThrough() {
    return false;
  }

  public boolean branches() {
    return false;
  }

  /*
   * Nomair A. Naeem, 7-FEB-05 Part of Visitor Design Implementation for AST See: soot.dava.toolkits.base.AST.analysis For
   * details
   */
  public void apply(Analysis a) {
    throw new RuntimeException("Analysis invoked apply method on ASTNode");
  }

}
    

    

    

            

    

            



    
    






    
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