001    /*
002     $Id: PostfixExpression.java,v 1.4 2005/02/01 10:46:54 russel Exp $
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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041     STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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.GroovyCodeVisitor;
049    import org.codehaus.groovy.classgen.AsmClassGenerator;
050    import org.codehaus.groovy.syntax.Token;
051    
052    /**
053     * Represents a postfix expression like foo++ or bar++
054     * 
055     * @author <a href="mailto:james@coredevelopers.net">James Strachan</a>
056     * @version $Revision: 1.4 $
057     */
058    public class PostfixExpression extends Expression {
059    
060        private Token operation;
061        private Expression expression;
062    
063        public PostfixExpression(Expression expression, Token operation) {
064            this.operation = operation;
065            this.expression = expression;
066        }
067    
068        public String toString() {
069            return super.toString() + "[" + expression + operation + "]";
070        }
071    
072        public void visit(GroovyCodeVisitor visitor) {
073            visitor.visitPostfixExpression(this);
074        }
075    
076        public Expression transformExpression(ExpressionTransformer transformer) {
077            return new PostfixExpression(transformer.transform(expression), operation);
078        }
079    
080        protected void resolveType(AsmClassGenerator resolver) {
081            expression.resolve(resolver);
082            setTypeClass(expression.getTypeClass());
083        }
084    
085        public void setExpression(Expression expression) {
086            this.expression = expression;
087        }
088    
089        public Token getOperation() {
090            return operation;
091        }
092    
093        public Expression getExpression() {
094            return expression;
095        }
096    
097        public String getText() {
098            return "(" + expression.getText() + operation.getText() + ")";
099        }
100    
101        public Class getTypeClass() {
102            return expression.getTypeClass();
103        }
104    
105        public String getType() {
106            return expression.getType();
107        }
108    
109    }