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/*
 * Copyright (c) 2011, 2022, Oracle and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.  Oracle designates this
 * particular file as subject to the "Classpath" exception as provided
 * by Oracle in the LICENSE file that accompanied this code.
 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
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package javax.lang.model.util;

import javax.lang.model.element.*;
import javax.annotation.processing.SupportedSourceVersion;
import javax.lang.model.SourceVersion;
import static javax.lang.model.SourceVersion.*;


/**
 * A scanning visitor of program elements with default behavior
 * appropriate for the {@link SourceVersion#RELEASE_8 RELEASE_8}
 * source version.  The visitXyz methods in this
 * class scan their component elements by calling {@link
 * ElementScanner6#scan(Element, Object) scan} on their {@linkplain
 * Element#getEnclosedElements enclosed elements}, {@linkplain
 * ExecutableElement#getParameters parameters}, etc., as indicated in
 * the individual method specifications.  A subclass can control the
 * order elements are visited by overriding the
 * visitXyz methods.  Note that clients of a
 * scanner may get the desired behavior by invoking {@code v.scan(e,
 * p)} rather than {@code v.visit(e, p)} on the root objects of
 * interest.
 *
 * 

When a subclass overrides a visitXyz method, the * new method can cause the enclosed elements to be scanned in the * default way by calling super.visitXyz. In this * fashion, the concrete visitor can control the ordering of traversal * over the component elements with respect to the additional * processing; for example, consistently calling * super.visitXyz at the start of the overridden * methods will yield a preorder traversal, etc. If the component * elements should be traversed in some other order, instead of * calling super.visitXyz, an overriding visit method * should call {@code scan} with the elements in the desired order. * * @apiNote * Methods in this class may be overridden subject to their general * contract. * * @param the return type of this visitor's methods. Use {@link * Void} for visitors that do not need to return results. * @param

the type of the additional parameter to this visitor's * methods. Use {@code Void} for visitors that do not need an * additional parameter. * * @see Compatibility note for subclasses * @see ElementScanner6 * @see ElementScanner7 * @see ElementScanner9 * @see ElementScanner14 * @since 1.8 */ @SupportedSourceVersion(RELEASE_8) public class ElementScanner8 extends ElementScanner7 { /** * Constructor for concrete subclasses; uses {@code null} for the * default value. */ @SuppressWarnings("deprecation") // Superclass constructor deprecated protected ElementScanner8(){ super(null); } /** * Constructor for concrete subclasses; uses the argument for the * default value. * * @param defaultValue the default value */ @SuppressWarnings("deprecation") // Superclass constructor deprecated protected ElementScanner8(R defaultValue){ super(defaultValue); } }





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