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1   /*
2    * Copyright 2003-2007 the original author or authors.
3    *
4    * Licensed under the Apache License, Version 2.0 (the "License");
5    * you may not use this file except in compliance with the License.
6    * You may obtain a copy of the License at
7    *
8    *     http://www.apache.org/licenses/LICENSE-2.0
9    *
10   * Unless required by applicable law or agreed to in writing, software
11   * distributed under the License is distributed on an "AS IS" BASIS,
12   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13   * See the License for the specific language governing permissions and
14   * limitations under the License.
15   */
16  package org.codehaus.groovy.ast.expr;
17  
18  import org.codehaus.groovy.ast.ClassNode;
19  import org.codehaus.groovy.ast.GroovyCodeVisitor;
20  import org.codehaus.groovy.syntax.Token;
21  
22  /**
23   * Represents a postfix expression like foo++ or bar++
24   * 
25   * @author <a href="mailto:james@coredevelopers.net">James Strachan</a>
26   * @version $Revision: 6778 $
27   */
28  public class PostfixExpression extends Expression {
29  
30      private Token operation;
31      private Expression expression;
32  
33      public PostfixExpression(Expression expression, Token operation) {
34          this.operation = operation;
35          this.expression = expression;
36      }
37  
38      public String toString() {
39          return super.toString() + "[" + expression + operation + "]";
40      }
41  
42      public void visit(GroovyCodeVisitor visitor) {
43          visitor.visitPostfixExpression(this);
44      }
45  
46      public Expression transformExpression(ExpressionTransformer transformer) {
47          Expression ret = new PostfixExpression(transformer.transform(expression), operation); 
48          ret.setSourcePosition(this);
49          return ret;
50      }
51  
52      public void setExpression(Expression expression) {
53          this.expression = expression;
54      }
55  
56      public Token getOperation() {
57          return operation;
58      }
59  
60      public Expression getExpression() {
61          return expression;
62      }
63  
64      public String getText() {
65          return "(" + expression.getText() + operation.getText() + ")";
66      }
67  
68      public ClassNode getType() {
69          return expression.getType();
70      }
71  
72  }