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RRepetitionRange.java

/*
 * Copyright © 2002 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
 * California 95054, U.S.A. All rights reserved.  Sun Microsystems, Inc. has
 * intellectual property rights relating to technology embodied in the product
 * that is described in this document. In particular, and without limitation,
 * these intellectual property rights may include one or more of the U.S.
 * patents listed at http://www.sun.com/patents and one or more additional
 * patents or pending patent applications in the U.S. and in other countries.
 * U.S. Government Rights - Commercial software. Government users are subject
 * to the Sun Microsystems, Inc. standard license agreement and applicable
 * provisions of the FAR and its supplements.  Use is subject to license terms.
 * Sun,  Sun Microsystems,  the Sun logo and  Java are trademarks or registered
 * trademarks of Sun Microsystems, Inc. in the U.S. and other countries.  This
 * product is covered and controlled by U.S. Export Control laws and may be
 * subject to the export or import laws in other countries.  Nuclear, missile,
 * chemical biological weapons or nuclear maritime end uses or end users,
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 * to countries subject to U.S. embargo or to entities identified on U.S.
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 */

package org.javacc.parser;

import java.util.Vector;

/**
 * Describes one-or-more regular expressions (<foo+>).
 */

00031 public class RRepetitionRange extends RegularExpression {

  /**
   * The regular expression which is repeated one or more times.
   */
00036   public RegularExpression regexpr;
  public int min = 0;
  public int max = -1;

  public Nfa GenerateNfa(boolean ignoreCase)
  {
     Vector units = new Vector();
     RSequence seq;
     int i;

     for (i = 0; i < min; i++)
     {
        units.addElement(regexpr);
     }

     while (i++ < max)
     {
        RZeroOrOne zoo = new RZeroOrOne();
        zoo.regexpr = regexpr;
        units.addElement(zoo);
     }
     seq = new RSequence(units);
     return seq.GenerateNfa(ignoreCase);
  }
}

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