001    /*
002     $Id: TernaryExpression.java 3419 2006-01-19 00:07:02Z blackdrag $
003    
004     Copyright 2003 (C) James Strachan and Bob Mcwhirter. All Rights Reserved.
005    
006     Redistribution and use of this software and associated documentation
007     ("Software"), with or without modification, are permitted provided
008     that the following conditions are met:
009    
010     1. Redistributions of source code must retain copyright
011        statements and notices.  Redistributions must also contain a
012        copy of this document.
013    
014     2. Redistributions in binary form must reproduce the
015        above copyright notice, this list of conditions and the
016        following disclaimer in the documentation and/or other
017        materials provided with the distribution.
018    
019     3. The name "groovy" must not be used to endorse or promote
020        products derived from this Software without prior written
021        permission of The Codehaus.  For written permission,
022        please contact info@codehaus.org.
023    
024     4. Products derived from this Software may not be called "groovy"
025        nor may "groovy" appear in their names without prior written
026        permission of The Codehaus. "groovy" is a registered
027        trademark of The Codehaus.
028    
029     5. Due credit should be given to The Codehaus -
030        http://groovy.codehaus.org/
031    
032     THIS SOFTWARE IS PROVIDED BY THE CODEHAUS AND CONTRIBUTORS
033     ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT
034     NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
035     FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL
036     THE CODEHAUS OR ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
037     INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
038     (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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042     ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
043     OF THE POSSIBILITY OF SUCH DAMAGE.
044    
045     */
046    package org.codehaus.groovy.ast.expr;
047    
048    import org.codehaus.groovy.ast.ClassNode;
049    import org.codehaus.groovy.ast.GroovyCodeVisitor;
050    
051    /**
052     * Represents a ternary expression (booleanExpression) ? expression : expression
053     * 
054     * @author <a href="mailto:james@coredevelopers.net">James Strachan</a>
055     * @version $Revision: 3419 $
056     */
057    public class TernaryExpression extends Expression {
058    
059        private BooleanExpression booleanExpression;
060        private Expression trueExpression;
061        private Expression falseExpression;
062    
063        public TernaryExpression(
064            BooleanExpression booleanExpression,
065            Expression trueExpression,
066            Expression falseExpression) {
067            this.booleanExpression = booleanExpression;
068            this.trueExpression = trueExpression;
069            this.falseExpression = falseExpression;
070        }
071        public void visit(GroovyCodeVisitor visitor) {
072            visitor.visitTernaryExpression(this);
073        }
074    
075        public Expression transformExpression(ExpressionTransformer transformer) {
076            Expression ret = new TernaryExpression(
077                    (BooleanExpression) transformer.transform(booleanExpression),
078                    transformer.transform(trueExpression),
079                    transformer.transform(falseExpression)); 
080            ret.setSourcePosition(this);
081            return ret; 
082        }
083    
084        public String toString() {
085            return super.toString() +"[" + booleanExpression + " ? " + trueExpression + " : " + falseExpression + "]";
086        }
087        
088        public BooleanExpression getBooleanExpression() {
089            return booleanExpression;
090        }
091    
092        public Expression getFalseExpression() {
093            return falseExpression;
094        }
095    
096        public Expression getTrueExpression() {
097            return trueExpression;
098        }
099    
100        public String getText() {
101            return "("
102                + booleanExpression.getText()
103                + ") ? "
104                + trueExpression.getText()
105                + " : "
106                + falseExpression.getText();
107        }
108    
109        public ClassNode getType() {
110            return trueExpression.getType();
111        }
112    }