001/*
002 *                    BioJava development code
003 *
004 * This code may be freely distributed and modified under the
005 * terms of the GNU Lesser General Public Licence.  This should
006 * be distributed with the code.  If you do not have a copy,
007 * see:
008 *
009 *      http://www.gnu.org/copyleft/lesser.html
010 *
011 * Copyright for this code is held jointly by the individual
012 * authors.  These should be listed in @author doc comments.
013 *
014 * For more information on the BioJava project and its aims,
015 * or to join the biojava-l mailing list, visit the home page
016 * at:
017 *
018 *      http://www.biojava.org/
019 *
020 */
021package org.biojava.utils.bytecode;
022
023import java.util.*;
024
025/**
026 * A CodeGenerator that just marks a label that can be used for jumps.
027 *
028 * @author Matthew Pocock
029 */
030
031public class MarkLabel implements CodeGenerator {
032  private final Label label;
033  
034  public MarkLabel(Label label) {
035    this.label = label;
036  }
037  
038  public void writeCode(CodeContext ctx) throws CodeException {
039    ctx.markLabel(label);
040  }
041  
042  public int stackDepth() {
043    return 0;
044  }
045  
046  public int stackDelta() {
047    return 0;
048  }
049}
050