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Java > Open Source Codes > spoon > examples > visitor > processing > PrintExpressionVisitor


1 package spoon.examples.visitor.processing;
2
3 import spoon.examples.visitor.src.VisitedElement;
4 import spoon.examples.visitor.src.expression.BinaryOperatorExpression;
5 import spoon.examples.visitor.src.expression.Expression;
6 import spoon.examples.visitor.src.expression.IntegerExpression;
7 import spoon.examples.visitor.src.expression.MinusOperatorExpression;
8 import spoon.examples.visitor.src.expression.PlusOperatorExpression;
9
10 public class PrintExpressionVisitor {
11
12     public void visitExpression(Expression e) {
13         ((VisitedElement)e).accept(this);
14     }
15     
16     public void visitIntegerExpression(IntegerExpression e) {
17         System.out.print(e.getValue());
18     }
19
20     public void visitPlusOperatorExpression(PlusOperatorExpression e) {
21         System.out.print(" ( ");
22         visitExpression(e.getLeft());
23         System.out.print(" + ");
24         visitExpression(e.getRight());
25         System.out.print(" ) ");
26     }
27
28     public void visitMinusOperatorExpression(MinusOperatorExpression e) {
29         System.out.print(" ( ");
30         visitExpression(e.getLeft());
31         System.out.print(" - ");
32         visitExpression(e.getRight());
33         System.out.print(" ) ");
34     }
35
36     public void visitBinaryOperatorExpression(BinaryOperatorExpression e) {
37     }
38
39 }
40
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