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This file is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

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The source code

/*
 *                 Sun Public License Notice
 *
 * The contents of this file are subject to the Sun Public License
 * Version 1.0 (the "License"). You may not use this file except in
 * compliance with the License. A copy of the License is available at
 * http://www.sun.com/
 *
 * The Original Code is NetBeans. The Initial Developer of the Original
 * Code is Sun Microsystems, Inc. Portions Copyright 1997-2002 Sun
 * Microsystems, Inc. All Rights Reserved.
 */
package org.netbeans.modules.javacore.parser;

import java.util.Arrays;
import org.netbeans.lib.java.parser.ASTree;
import org.netbeans.lib.java.parser.ASTreeTypes;
import org.netbeans.lib.java.parser.ParserTokens;
import org.netbeans.lib.java.parser.Token;
import org.openide.ErrorManager;

/**
 *
 * @author  mm109185
 */
public class ASTUtil implements ASTreeTypes, ParserTokens {
    
    private static final String[] EMPTY_STRING_ARRAY=new String[0];
    
    /** Creates a new instance of ASTUtil */
    private ASTUtil() {
    }
    
    /** Returns name of superclass of element represented by passed tree.
     * @param asTree AS tree representing element.
     * @return Simple name of element.
     */
    static String getSuperclassName(ASTree asTree) {
        if (asTree.getType()==CLASS_DECLARATION) {
            ASTree _super=asTree.getSubTrees()[2]; // _SUPER
            if (_super==null)
                return "";
            return getIdentifier(_super.getSubTrees()[0]);
        }
        return null;
    }
    
    /** Returns array of interface names that the class represented by
     * passed tree implements (or interface represented by passed tree extends).
     * @param asTree AS tree representing class or interface.
     * @return Array of interface names.
     */
    static String[] getInterfaceNames(ASTree asTree) {
        switch(asTree.getType()) {
            case CLASS_DECLARATION:
            case INTERFACE_DECLARATION:
                ASTree interfaces=asTree.getSubTrees()[3]; // interfaces
                
                if (interfaces!=null) {
                    ASTree parts[]=interfaces.getSubTrees();
                    String[] ifNames=new String[parts.length];
                    int i;
                    
                    for (i=0;i
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