diff -r 000000000000 -r 959103a6100f src/share/classes/javax/lang/model/util/SimpleAnnotationValueVisitor6.java --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/src/share/classes/javax/lang/model/util/SimpleAnnotationValueVisitor6.java Wed Apr 27 01:34:52 2016 +0800 @@ -0,0 +1,272 @@ +/* + * Copyright (c) 2005, 2013, 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, + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. + * + * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA + * or visit www.oracle.com if you need additional information or have any + * questions. + */ + +package javax.lang.model.util; + + +import java.util.List; +import javax.lang.model.element.*; + +import javax.lang.model.type.TypeMirror; +import static javax.lang.model.SourceVersion.*; +import javax.lang.model.SourceVersion; +import javax.annotation.processing.SupportedSourceVersion; + +/** + * A simple visitor for annotation values with default behavior + * appropriate for the {@link SourceVersion#RELEASE_6 RELEASE_6} + * source version. Visit methods call {@link + * #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 AnnotationValueVisitor} interface + * implemented by this class may have methods 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 simple annotation + * value 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. + * + *

Note that adding a default implementation of a new visit method + * in a visitor class will occur instead of adding a default + * method directly in the visitor interface since a Java SE 8 + * language feature cannot be used to this version of the API since + * this version is required to be runnable on Java SE 7 + * implementations. Future versions of the API that are only required + * to run on Java SE 8 and later may take advantage of default methods + * in this situation. + * + * @param the return type of this visitor's methods + * @param

the type of the additional parameter to this visitor's methods. + * + * @author Joseph D. Darcy + * @author Scott Seligman + * @author Peter von der Ahé + * + * @see SimpleAnnotationValueVisitor7 + * @see SimpleAnnotationValueVisitor8 + * @since 1.6 + */ +@SupportedSourceVersion(RELEASE_6) +public class SimpleAnnotationValueVisitor6 + extends AbstractAnnotationValueVisitor6 { + + /** + * Default value to be returned; {@link #defaultAction + * defaultAction} returns this value unless the method is + * overridden. + */ + protected final R DEFAULT_VALUE; + + /** + * Constructor for concrete subclasses; uses {@code null} for the + * default value. + */ + protected SimpleAnnotationValueVisitor6() { + super(); + DEFAULT_VALUE = null; + } + + /** + * Constructor for concrete subclasses; uses the argument for the + * default value. + * + * @param defaultValue the value to assign to {@link #DEFAULT_VALUE} + */ + protected SimpleAnnotationValueVisitor6(R defaultValue) { + super(); + DEFAULT_VALUE = defaultValue; + } + + /** + * The default action for visit methods. The implementation in + * this class just returns {@link #DEFAULT_VALUE}; subclasses will + * commonly override this method. + * + * @param o the value of the annotation + * @param p a visitor-specified parameter + * @return {@code DEFAULT_VALUE} unless overridden + */ + protected R defaultAction(Object o, P p) { + return DEFAULT_VALUE; + } + + /** + * {@inheritDoc} This implementation calls {@code defaultAction}. + * + * @param b {@inheritDoc} + * @param p {@inheritDoc} + * @return the result of {@code defaultAction} + */ + public R visitBoolean(boolean b, P p) { + return defaultAction(b, p); + } + + /** + * {@inheritDoc} This implementation calls {@code defaultAction}. + * + * @param b {@inheritDoc} + * @param p {@inheritDoc} + * @return the result of {@code defaultAction} + */ + public R visitByte(byte b, P p) { + return defaultAction(b, p); + } + + /** + * {@inheritDoc} This implementation calls {@code defaultAction}. + * + * @param c {@inheritDoc} + * @param p {@inheritDoc} + * @return the result of {@code defaultAction} + */ + public R visitChar(char c, P p) { + return defaultAction(c, p); + } + + /** + * {@inheritDoc} This implementation calls {@code defaultAction}. + * + * @param d {@inheritDoc} + * @param p {@inheritDoc} + * @return the result of {@code defaultAction} + */ + public R visitDouble(double d, P p) { + return defaultAction(d, p); + } + + /** + * {@inheritDoc} This implementation calls {@code defaultAction}. + * + * @param f {@inheritDoc} + * @param p {@inheritDoc} + * @return the result of {@code defaultAction} + */ + public R visitFloat(float f, P p) { + return defaultAction(f, p); + } + + /** + * {@inheritDoc} This implementation calls {@code defaultAction}. + * + * @param i {@inheritDoc} + * @param p {@inheritDoc} + * @return the result of {@code defaultAction} + */ + public R visitInt(int i, P p) { + return defaultAction(i, p); + } + + /** + * {@inheritDoc} This implementation calls {@code defaultAction}. + * + * @param i {@inheritDoc} + * @param p {@inheritDoc} + * @return the result of {@code defaultAction} + */ + public R visitLong(long i, P p) { + return defaultAction(i, p); + } + + /** + * {@inheritDoc} This implementation calls {@code defaultAction}. + * + * @param s {@inheritDoc} + * @param p {@inheritDoc} + * @return the result of {@code defaultAction} + */ + public R visitShort(short s, P p) { + return defaultAction(s, p); + } + + /** + * {@inheritDoc} This implementation calls {@code defaultAction}. + * + * @param s {@inheritDoc} + * @param p {@inheritDoc} + * @return the result of {@code defaultAction} + */ + public R visitString(String s, P p) { + return defaultAction(s, p); + } + + /** + * {@inheritDoc} This implementation calls {@code defaultAction}. + * + * @param t {@inheritDoc} + * @param p {@inheritDoc} + * @return the result of {@code defaultAction} + */ + public R visitType(TypeMirror t, P p) { + return defaultAction(t, p); + } + + /** + * {@inheritDoc} This implementation calls {@code defaultAction}. + * + * @param c {@inheritDoc} + * @param p {@inheritDoc} + * @return the result of {@code defaultAction} + */ + public R visitEnumConstant(VariableElement c, P p) { + return defaultAction(c, p); + } + + /** + * {@inheritDoc} This implementation calls {@code defaultAction}. + * + * @param a {@inheritDoc} + * @param p {@inheritDoc} + * @return the result of {@code defaultAction} + */ + public R visitAnnotation(AnnotationMirror a, P p) { + return defaultAction(a, p); + } + + /** + * {@inheritDoc} This implementation calls {@code defaultAction}. + * + * @param vals {@inheritDoc} + * @param p {@inheritDoc} + * @return the result of {@code defaultAction} + */ + public R visitArray(List vals, P p) { + return defaultAction(vals, p); + } +}