src/org/apache/xpath/objects/XFloat.java

/*
 * The Apache Software License, Version 1.1
 *
 *
 * Copyright (c) 1999-2003 The Apache Software Foundation.  All rights 
 * reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer. 
 *
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in
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 *    distribution.
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 * 3. The end-user documentation included with the redistribution,
 *    if any, must include the following acknowledgment:  
 *       "This product includes software developed by the
 *        Apache Software Foundation (http://www.apache.org/)."
 *    Alternately, this acknowledgment may appear in the software itself,
 *    if and wherever such third-party acknowledgments normally appear.
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 * 4. The names "Xalan" and "Apache Software Foundation" must
 *    not be used to endorse or promote products derived from this
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 * 5. Products derived from this software may not be called "Apache",
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 *
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 * ====================================================================
 *
 * This software consists of voluntary contributions made by many
 * individuals on behalf of the Apache Software Foundation and was
 * originally based on software copyright (c) 1999, Lotus
 * Development Corporation., http://www.lotus.com.  For more
 * information on the Apache Software Foundation, please see
 * <http://www.apache.org/>.
 */
package org.apache.xpath.objects;

import org.apache.xml.dtm.XType;
import org.apache.xpath.XPathContext;
import org.apache.xpath.parser.Token;

public class XFloat extends XNumber
{
  float m_val;

  /**
   * Constructor for XDouble
   */
  public XFloat(float num)
  {
    m_val = num;
  }
  
  /**
   * Constructor for XDouble
   */
  public XFloat(Float num)
  {
    m_val = num.floatValue();
  }
  
  /**
   * Constructor for XDouble
   */
  public XFloat()
  {
  }
  
  public Object object()
  {
  	return new Float(m_val);
  }

  /**
   * Cast result object to a number.
   *
   * @return the value of the XNumber object
   */
  public double num()
  {
    return m_val;
  }
  
  /**
   * Get result object as a integer.
   *
   * @return At this level, the num() value cast to an integer.
   *
   * @throws javax.xml.transform.TransformerException
   */
  public float floatVal() throws javax.xml.transform.TransformerException
  {

    return m_val;
  }
  
  /**
   * Evaluate expression to a number.
   *
   * @return 0.0
   *
   * @throws javax.xml.transform.TransformerException
   */
  public double num(XPathContext xctxt) 
    throws javax.xml.transform.TransformerException
  {
    return m_val;
  }

  /**
   * Cast result object to a boolean.
   *
   * @return false if the value is NaN or exactly equal to 0.0
   */
  public boolean bool()
  {
    return (Double.isNaN(m_val) || (m_val == 0.0)) ? false : true;
  }
  
  public void processToken(Token t) 
  { 
  	String strNum = t.image;
  	m_val = Float.parseFloat(strNum);
  }

  /**
   * Return the sequence representing this object.
   * @return XSequence
   */
  public XSequence xseq()
  {
    return new XSequenceSingleton(this);
  }

}