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Java > Open Source Codes > org > netbeans > api > languages > ASTEvaluator


1 /*
2  * The contents of this file are subject to the terms of the Common Development
3  * and Distribution License (the License). You may not use this file except in
4  * compliance with the License.
5  *
6  * You can obtain a copy of the License at http://www.netbeans.org/cddl.html
7  * or http://www.netbeans.org/cddl.txt.
8  *
9  * When distributing Covered Code, include this CDDL Header Notice in each file
10  * and include the License file at http://www.netbeans.org/cddl.txt.
11  * If applicable, add the following below the CDDL Header, with the fields
12  * enclosed by brackets [] replaced by your own identifying information:
13  * "Portions Copyrighted [year] [name of copyright owner]"
14  *
15  * The Original Software is NetBeans. The Initial Developer of the Original
16  * Software is Sun Microsystems, Inc. Portions Copyright 1997-2006 Sun
17  * Microsystems, Inc. All Rights Reserved.
18  */
19 package org.netbeans.api.languages;
20
21 import org.netbeans.api.languages.ParserManager.State;
22
23 /**
24  * Listens on AST changes. Use {@link ParserManager.addASTEvaluator} to register
25  * instance of ASTEvaluator.
26  *
27  * @author Jan Jancura
28  */
29 public abstract class ASTEvaluator {
30
31     /**
32      * Called when AST is changed before evaluation of AST tree.
33      *
34      * @param state state of parser
35      * @param root root node of ast tree
36      */
37     public abstract void beforeEvaluation (State state, ASTNode root);
38
39     /**
40      * Called when AST is changed after evaluation of tree.
41      *
42      * @param state state of parser
43      * @param root root node of ast tree
44      */
45     public abstract void afterEvaluation (State state, ASTNode root);
46
47     /**
48      * Called when AST is changed for all different ASTPaths.
49      *
50      * @param state state of parser
51      * @param path path to the current {@link ASTItem}
52      */
53     public abstract void evaluate (State state, ASTPath path);
54 }
55
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