content: /*
   *  This file is part of AndroidIDE.
   *
   *  AndroidIDE is free software: you can redistribute it and/or modify
   *  it under the terms of the GNU General Public License as published by
   *  the Free Software Foundation, either version 3 of the License, or
   *  (at your option) any later version.
   *
   *  AndroidIDE 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 Public License for more details.
   *
   *  You should have received a copy of the GNU General Public License
   *   along with AndroidIDE.  If not, see <https://www.gnu.org/licenses/>.
   */
  
  /*
   * reserved comment block
   * DO NOT REMOVE OR ALTER!
   */
  /*
   * Copyright 1999-2004 The Apache Software Foundation.
   *
   * Licensed under the Apache License, Version 2.0 (the "License");
   * you may not use this file except in compliance with the License.
   * You may obtain a copy of the License at
   *
   *     http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  /*
   * $Id: Minus.java,v 1.2.4.1 2005/09/14 21:31:44 jeffsuttor Exp $
   */
  package jaxp.sun.org.apache.xpath.internal.operations;
  
  import jaxp.sun.org.apache.xpath.internal.XPathContext;
  import jaxp.sun.org.apache.xpath.internal.objects.XNumber;
  import jaxp.sun.org.apache.xpath.internal.objects.XObject;
  import jaxp.xml.transform.TransformerException;
  
  /**
   * The binary '-' operation expression executer.
   */
  public class Minus extends Operation
  {
      static final long serialVersionUID = -5297672838170871043L;
  
    /**
     * Apply the operation to two operands, and return the result.
     *
     *
     * @param left non-null reference to the evaluated left operand.
     * @param right non-null reference to the evaluated right operand.
     *
     * @return non-null reference to the XObject that represents the
     *         result of the operation.
     *
     * @throws TransformerException
     */
    public XObject operate(XObject left, XObject right)
            throws TransformerException
    {
      return new XNumber(left.num() - right.num());
    }
  
    /**
     * Evaluate this operation directly to a double.
     *
     * @param xctxt The runtime execution context.
     *
     * @return The result of the operation as a double.
     *
     * @throws TransformerException
     */
    public double num(XPathContext xctxt)
            throws TransformerException
    {
  
      return (m_left.num(xctxt) - m_right.num(xctxt));
    }
  
  }
  