--- /dev/null 2009-07-06 20:02:10.000000000 -0700 +++ new/src/share/classes/javax/lang/model/util/ElementKindVisitor7.java 2010-04-29 22:39:15.000000000 -0700 @@ -0,0 +1,98 @@ +/* + * Copyright 2010 Sun Microsystems, Inc. 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. Sun designates this + * particular file as subject to the "Classpath" exception as provided + * by Sun 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, + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. + * + * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, + * CA 95054 USA or visit www.sun.com if you need additional information or + * have any questions. + */ + +package javax.lang.model.util; + +import javax.lang.model.element.*; +import static javax.lang.model.element.ElementKind.*; +import javax.annotation.processing.SupportedSourceVersion; +import static javax.lang.model.SourceVersion.*; +import javax.lang.model.SourceVersion; + +/** + * A visitor of program elements based on their {@linkplain + * ElementKind kind} with default behavior appropriate for the {@link + * SourceVersion#RELEASE_6 RELEASE_6} source version. For {@linkplain + * Element elements} XYZ that may have more than one + * kind, the visitXYZ methods in this class delegate + * to the visitXYZKind method corresponding to the + * first argument's kind. The visitXYZKind methods + * call {@link #defaultAction defaultAction}, passing their arguments + * to {@code defaultAction}'s corresponding parameters. + * + *

Methods in this class may be overridden subject to their + * general contract. Note that annotating methods in concrete + * subclasses with {@link java.lang.Override @Override} will help + * ensure that methods are overridden as intended. + * + *

WARNING: The {@code ElementVisitor} interface + * implemented by this class may have methods added to it or the + * {@code ElementKind} {@code enum} used in this case may have + * constants added to it in the future to accommodate new, currently + * unknown, language structures added to future versions of the + * Java™ programming language. Therefore, methods whose names + * begin with {@code "visit"} may be added to this class in the + * future; to avoid incompatibilities, classes which extend this class + * should not declare any instance methods with names beginning with + * {@code "visit"}. + * + *

When such a new visit method is added, the default + * implementation in this class will be to call the {@link + * #visitUnknown visitUnknown} method. A new abstract element kind + * visitor class will also be introduced to correspond to the new + * language level; this visitor will have different default behavior + * for the visit method in question. When the new visitor is + * introduced, all or portions of this visitor may be deprecated. + * + * @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 ElementKindVisitor6 + * @since 1.7 + */ +@SupportedSourceVersion(RELEASE_7) +public class ElementKindVisitor7 + extends SharedElementKindVisitor { + /** + * Constructor for concrete subclasses; uses {@code null} for the + * default value. + */ + protected ElementKindVisitor7() { + super(null); + } + + /** + * Constructor for concrete subclasses; uses the argument for the + * default value. + * + * @param defaultValue the value to assign to {@link #DEFAULT_VALUE} + */ + protected ElementKindVisitor7(R defaultValue) { + super(defaultValue); + } +}