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Java > Open Source Codes > Node


1
2 /*
3  * Copyright © 2002 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
4  * California 95054, U.S.A. All rights reserved. Sun Microsystems, Inc. has
5  * intellectual property rights relating to technology embodied in the product
6  * that is described in this document. In particular, and without limitation,
7  * these intellectual property rights may include one or more of the U.S.
8  * patents listed at http://www.sun.com/patents and one or more additional
9  * patents or pending patent applications in the U.S. and in other countries.
10  * U.S. Government Rights - Commercial software. Government users are subject
11  * to the Sun Microsystems, Inc. standard license agreement and applicable
12  * provisions of the FAR and its supplements. Use is subject to license terms.
13  * Sun, Sun Microsystems, the Sun logo and Java are trademarks or registered
14  * trademarks of Sun Microsystems, Inc. in the U.S. and other countries. This
15  * product is covered and controlled by U.S. Export Control laws and may be
16  * subject to the export or import laws in other countries. Nuclear, missile,
17  * chemical biological weapons or nuclear maritime end uses or end users,
18  * whether direct or indirect, are strictly prohibited. Export or reexport
19  * to countries subject to U.S. embargo or to entities identified on U.S.
20  * export exclusion lists, including, but not limited to, the denied persons
21  * and specially designated nationals lists is strictly prohibited.
22  */
23
24
25 /* All AST nodes must implement this interface. It provides basic
26    machinery for constructing the parent and child relationships
27    between nodes. */
28
29 public interface Node {
30
31   /** This method is called after the node has been made the current
32     node. It indicates that child nodes can now be added to it. */
33   public void jjtOpen();
34
35   /** This method is called after all the child nodes have been
36     added. */
37   public void jjtClose();
38
39   /** This pair of methods are used to inform the node of its
40     parent. */
41   public void jjtSetParent(Node n);
42   public Node jjtGetParent();
43
44   /** This method tells the node to add its argument to the node's
45     list of children. */
46   public void jjtAddChild(Node n, int i);
47
48   /** This method returns a child node. The children are numbered
49      from zero, left to right. */
50   public Node jjtGetChild(int i);
51
52   /** Return the number of children the node has. */
53   int jjtGetNumChildren();
54
55   /************************* Added by Sreeni. *******************/
56
57   /** Interpret method */
58   public void interpret();
59 }
60
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