| /* Generated By:JJTree: Do not edit this line. IfLpar.java */ |
| |
| /* |
| * The Apache Software License, Version 1.1 |
| * |
| * |
| * Copyright (c) 1999 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 |
| * the documentation and/or other materials provided with the |
| * distribution. |
| * |
| * 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. |
| * |
| * 4. The names "Xalan" and "Apache Software Foundation" must |
| * not be used to endorse or promote products derived from this |
| * software without prior written permission. For written |
| * permission, please contact apache@apache.org. |
| * |
| * 5. Products derived from this software may not be called "Apache", |
| * nor may "Apache" appear in their name, without prior written |
| * permission of the Apache Software Foundation. |
| * |
| * 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 |
| * DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR |
| * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF |
| * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND |
| * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, |
| * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT |
| * 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.conditional; |
| |
| import javax.xml.transform.TransformerException; |
| |
| import org.apache.xpath.Expression; |
| import org.apache.xpath.ExpressionOwner; |
| import org.apache.xpath.VariableComposeState; |
| import org.apache.xpath.XPathContext; |
| import org.apache.xpath.XPathVisitor; |
| import org.apache.xpath.objects.XObject; |
| import org.apache.xpath.parser.IfExpr; |
| import org.apache.xpath.parser.Node; |
| |
| public class If extends Expression implements ExpressionOwner |
| { |
| |
| public If() |
| { |
| super(); |
| } |
| |
| /** Accept the visitor. **/ |
| public Object jjtAccept( |
| org.apache.xpath.parser.XPathVisitor visitor, |
| Object data) |
| { |
| return visitor.visit(this, data); |
| } |
| |
| /** |
| * @see Expression#deepEquals(Expression) |
| */ |
| public boolean deepEquals(Expression expr) |
| { |
| return false; |
| } |
| |
| /** |
| * @see Expression#fixupVariables(Vector, int) |
| */ |
| public void fixupVariables(VariableComposeState vcs) |
| { |
| } |
| |
| /** |
| * @see Expression#execute(XPathContext) |
| */ |
| public XObject execute(XPathContext xctxt) throws TransformerException |
| { |
| |
| XObject test = m_test.execute(xctxt); |
| |
| if (test.bool()) |
| { |
| // Execute Then expression |
| return m_then.execute(xctxt); |
| |
| } |
| else |
| { |
| // execute else expression |
| return m_else.execute(xctxt); |
| } |
| } |
| |
| /** |
| * @see XPathVisitable#callVisitors(ExpressionOwner, XPathVisitor) |
| */ |
| public void callVisitors(ExpressionOwner owner, XPathVisitor visitor) |
| { |
| } |
| |
| /** |
| * @see ExpressionOwner#getExpression() |
| */ |
| public Expression getExpression() |
| { |
| return null; |
| } |
| |
| /** |
| * @see ExpressionOwner#setExpression(Expression) |
| */ |
| public void setExpression(Expression exp) |
| { |
| } |
| |
| Expression m_test; |
| |
| Expression m_then; |
| |
| Expression m_else; |
| |
| /** |
| * Returns the e. |
| * @return Expression |
| */ |
| public Expression getElse() |
| { |
| return m_else; |
| } |
| |
| /** |
| * Returns the test. |
| * @return Expression |
| */ |
| public Expression getTest() |
| { |
| return m_test; |
| } |
| |
| /** |
| * Returns the then. |
| * @return Expression |
| */ |
| public Expression getThen() |
| { |
| return m_then; |
| } |
| |
| /** |
| * Sets the e. |
| * @param e The e to set |
| */ |
| public void setElse(Expression e) |
| { |
| m_else = e; |
| } |
| |
| /** |
| * Sets the test. |
| * @param test The test to set |
| */ |
| public void setTest(Expression test) |
| { |
| m_test = test; |
| } |
| |
| /** |
| * Sets the then. |
| * @param then The then to set |
| */ |
| public void setThen(Expression then) |
| { |
| m_then = then; |
| } |
| |
| /** |
| * @see org.apache.xpath.parser.Node#jjtSetParent(Node) |
| */ |
| public void jjtSetParent(Node n) |
| { |
| super.jjtSetParent(n); |
| if (n instanceof IfExpr) // don't fix up if we're reducing |
| { |
| IfExpr ifexpr = (IfExpr) n; |
| |
| // At this point all children should have been added except this node. |
| // This has a fixed number of children. |
| m_test = (Expression) ifexpr.jjtGetChild(1); |
| m_test.jjtSetParent(this); |
| m_then = (Expression) ifexpr.jjtGetChild(3); |
| m_then.jjtSetParent(this); |
| m_else = (Expression) ifexpr.jjtGetChild(5); |
| m_else.jjtSetParent(this); |
| |
| ifexpr.m_exprs.setSize(1); |
| } |
| } |
| |
| |
| /** |
| * @see org.apache.xpath.parser.Node#jjtGetChild(int) |
| */ |
| public Node jjtGetChild(int i) |
| { |
| return (i == 0) ? m_test : (i == 1) ? m_then : (i == 2) ? m_else : null; |
| } |
| |
| /** |
| * @see org.apache.xpath.parser.Node#jjtGetNumChildren() |
| */ |
| public int jjtGetNumChildren() |
| { |
| return 3; |
| } |
| |
| /** |
| * @see org.apache.xpath.parser.SimpleNode#isPathExprReduced() |
| */ |
| public boolean isPathExprReduced() |
| { |
| return false; // never reduce. |
| } |
| |
| } |