| /* |
| * Copyright (c) 2005, 2017, 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 javax.annotation.processing.SupportedSourceVersion; |
| import javax.lang.model.SourceVersion; |
| import javax.lang.model.type.*; |
| import static javax.lang.model.SourceVersion.*; |
| |
| /** |
| * A visitor of types based on their {@linkplain TypeKind kind} with |
| * default behavior appropriate for the {@link SourceVersion#RELEASE_6 |
| * RELEASE_6} source version. For {@linkplain |
| * TypeMirror types} <code><i>Xyz</i></code> that may have more than one |
| * kind, the <code>visit<i>Xyz</i></code> methods in this class delegate |
| * to the <code>visit<i>Xyz</i>As<i>Kind</i></code> method corresponding to the |
| * first argument's kind. The <code>visit<i>Xyz</i>As<i>Kind</i></code> methods |
| * call {@link #defaultAction defaultAction}, passing their arguments |
| * to {@code defaultAction}'s corresponding parameters. |
| * |
| * <p> 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. |
| * |
| * <p> <b>WARNING:</b> The {@code TypeVisitor} 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"}. |
| * |
| * <p>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 type 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 <R> the return type of this visitor's methods. Use {@link |
| * Void} for visitors that do not need to return results. |
| * @param <P> the type of the additional parameter to this visitor's |
| * methods. Use {@code Void} for visitors that do not need an |
| * additional parameter. |
| * |
| * @author Joseph D. Darcy |
| * @author Scott Seligman |
| * @author Peter von der Ahé |
| * |
| * @see TypeKindVisitor7 |
| * @see TypeKindVisitor8 |
| * @since 1.6 |
| */ |
| @SupportedSourceVersion(RELEASE_6) |
| public class TypeKindVisitor6<R, P> extends SimpleTypeVisitor6<R, P> { |
| /** |
| * Constructor for concrete subclasses to call; uses {@code null} |
| * for the default value. |
| * @deprecated Release 6 is obsolete; update to a visitor for a newer |
| * release level. |
| */ |
| @Deprecated |
| protected TypeKindVisitor6() { |
| super(null); |
| } |
| |
| |
| /** |
| * Constructor for concrete subclasses to call; uses the argument |
| * for the default value. |
| * |
| * @param defaultValue the value to assign to {@link #DEFAULT_VALUE} |
| * @deprecated Release 6 is obsolete; update to a visitor for a newer |
| * release level. |
| */ |
| @Deprecated |
| protected TypeKindVisitor6(R defaultValue) { |
| super(defaultValue); |
| } |
| |
| /** |
| * Visits a primitive type, dispatching to the visit method for |
| * the specific {@linkplain TypeKind kind} of primitive type: |
| * {@code BOOLEAN}, {@code BYTE}, etc. |
| * |
| * @param t {@inheritDoc} |
| * @param p {@inheritDoc} |
| * @return the result of the kind-specific visit method |
| */ |
| @Override |
| public R visitPrimitive(PrimitiveType t, P p) { |
| TypeKind k = t.getKind(); |
| switch (k) { |
| case BOOLEAN: |
| return visitPrimitiveAsBoolean(t, p); |
| |
| case BYTE: |
| return visitPrimitiveAsByte(t, p); |
| |
| case SHORT: |
| return visitPrimitiveAsShort(t, p); |
| |
| case INT: |
| return visitPrimitiveAsInt(t, p); |
| |
| case LONG: |
| return visitPrimitiveAsLong(t, p); |
| |
| case CHAR: |
| return visitPrimitiveAsChar(t, p); |
| |
| case FLOAT: |
| return visitPrimitiveAsFloat(t, p); |
| |
| case DOUBLE: |
| return visitPrimitiveAsDouble(t, p); |
| |
| default: |
| throw new AssertionError("Bad kind " + k + " for PrimitiveType" + t); |
| } |
| } |
| |
| /** |
| * Visits a {@code BOOLEAN} primitive type by calling |
| * {@code defaultAction}. |
| * |
| * @param t the type to visit |
| * @param p a visitor-specified parameter |
| * @return the result of {@code defaultAction} |
| */ |
| public R visitPrimitiveAsBoolean(PrimitiveType t, P p) { |
| return defaultAction(t, p); |
| } |
| |
| /** |
| * Visits a {@code BYTE} primitive type by calling |
| * {@code defaultAction}. |
| * |
| * @param t the type to visit |
| * @param p a visitor-specified parameter |
| * @return the result of {@code defaultAction} |
| */ |
| public R visitPrimitiveAsByte(PrimitiveType t, P p) { |
| return defaultAction(t, p); |
| } |
| |
| /** |
| * Visits a {@code SHORT} primitive type by calling |
| * {@code defaultAction}. |
| * |
| * @param t the type to visit |
| * @param p a visitor-specified parameter |
| * @return the result of {@code defaultAction} |
| */ |
| public R visitPrimitiveAsShort(PrimitiveType t, P p) { |
| return defaultAction(t, p); |
| } |
| |
| /** |
| * Visits an {@code INT} primitive type by calling |
| * {@code defaultAction}. |
| * |
| * @param t the type to visit |
| * @param p a visitor-specified parameter |
| * @return the result of {@code defaultAction} |
| */ |
| public R visitPrimitiveAsInt(PrimitiveType t, P p) { |
| return defaultAction(t, p); |
| } |
| |
| /** |
| * Visits a {@code LONG} primitive type by calling |
| * {@code defaultAction}. |
| * |
| * @param t the type to visit |
| * @param p a visitor-specified parameter |
| * @return the result of {@code defaultAction} |
| */ |
| public R visitPrimitiveAsLong(PrimitiveType t, P p) { |
| return defaultAction(t, p); |
| } |
| |
| /** |
| * Visits a {@code CHAR} primitive type by calling |
| * {@code defaultAction}. |
| * |
| * @param t the type to visit |
| * @param p a visitor-specified parameter |
| * @return the result of {@code defaultAction} |
| */ |
| public R visitPrimitiveAsChar(PrimitiveType t, P p) { |
| return defaultAction(t, p); |
| } |
| |
| /** |
| * Visits a {@code FLOAT} primitive type by calling |
| * {@code defaultAction}. |
| * |
| * @param t the type to visit |
| * @param p a visitor-specified parameter |
| * @return the result of {@code defaultAction} |
| */ |
| public R visitPrimitiveAsFloat(PrimitiveType t, P p) { |
| return defaultAction(t, p); |
| } |
| |
| /** |
| * Visits a {@code DOUBLE} primitive type by calling |
| * {@code defaultAction}. |
| * |
| * @param t the type to visit |
| * @param p a visitor-specified parameter |
| * @return the result of {@code defaultAction} |
| */ |
| public R visitPrimitiveAsDouble(PrimitiveType t, P p) { |
| return defaultAction(t, p); |
| } |
| |
| /** |
| * Visits a {@link NoType} instance, dispatching to the visit method for |
| * the specific {@linkplain TypeKind kind} of pseudo-type: |
| * {@code VOID}, {@code PACKAGE}, or {@code NONE}. |
| * |
| * @param t {@inheritDoc} |
| * @param p {@inheritDoc} |
| * @return the result of the kind-specific visit method |
| */ |
| @Override |
| public R visitNoType(NoType t, P p) { |
| TypeKind k = t.getKind(); |
| switch (k) { |
| case VOID: |
| return visitNoTypeAsVoid(t, p); |
| |
| case PACKAGE: |
| return visitNoTypeAsPackage(t, p); |
| |
| case NONE: |
| return visitNoTypeAsNone(t, p); |
| |
| default: |
| throw new AssertionError("Bad kind " + k + " for NoType" + t); |
| } |
| } |
| |
| /** |
| * Visits a {@link TypeKind#VOID VOID} pseudo-type by calling |
| * {@code defaultAction}. |
| * |
| * @param t the type to visit |
| * @param p a visitor-specified parameter |
| * @return the result of {@code defaultAction} |
| */ |
| public R visitNoTypeAsVoid(NoType t, P p) { |
| return defaultAction(t, p); |
| } |
| |
| /** |
| * Visits a {@link TypeKind#PACKAGE PACKAGE} pseudo-type by calling |
| * {@code defaultAction}. |
| * |
| * @param t the type to visit |
| * @param p a visitor-specified parameter |
| * @return the result of {@code defaultAction} |
| */ |
| public R visitNoTypeAsPackage(NoType t, P p) { |
| return defaultAction(t, p); |
| } |
| |
| /** |
| * Visits a {@link TypeKind#NONE NONE} pseudo-type by calling |
| * {@code defaultAction}. |
| * |
| * @param t the type to visit |
| * @param p a visitor-specified parameter |
| * @return the result of {@code defaultAction} |
| */ |
| public R visitNoTypeAsNone(NoType t, P p) { |
| return defaultAction(t, p); |
| } |
| } |