| /*** |
| * ASM: a very small and fast Java bytecode manipulation framework |
| * Copyright (c) 2000-2011 INRIA, France Telecom |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * 3. Neither the name of the copyright holders nor the names of its |
| * contributors may be used to endorse or promote products derived from |
| * this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
| * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE |
| * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
| * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
| * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
| * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
| * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF |
| * THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| package org.apache.tajo.org.objectweb.asm; |
| |
| /** |
| * A visitor to visit a Java annotation. The methods of this class must be |
| * called in the following order: ( <tt>visit</tt> | <tt>visitEnum</tt> | |
| * <tt>visitAnnotation</tt> | <tt>visitArray</tt> )* <tt>visitEnd</tt>. |
| * |
| * @author Eric Bruneton |
| * @author Eugene Kuleshov |
| */ |
| public abstract class AnnotationVisitor { |
| |
| /** |
| * The ASM API version implemented by this visitor. The value of this field |
| * must be one of {@link Opcodes#ASM4}. |
| */ |
| protected final int api; |
| |
| /** |
| * The annotation visitor to which this visitor must delegate method calls. |
| * May be null. |
| */ |
| protected AnnotationVisitor av; |
| |
| /** |
| * Constructs a new {@link AnnotationVisitor}. |
| * |
| * @param api |
| * the ASM API version implemented by this visitor. Must be one |
| * of {@link Opcodes#ASM4}. |
| */ |
| public AnnotationVisitor(final int api) { |
| this(api, null); |
| } |
| |
| /** |
| * Constructs a new {@link AnnotationVisitor}. |
| * |
| * @param api |
| * the ASM API version implemented by this visitor. Must be one |
| * of {@link Opcodes#ASM4}. |
| * @param av |
| * the annotation visitor to which this visitor must delegate |
| * method calls. May be null. |
| */ |
| public AnnotationVisitor(final int api, final AnnotationVisitor av) { |
| if (api != Opcodes.ASM4) { |
| throw new IllegalArgumentException(); |
| } |
| this.api = api; |
| this.av = av; |
| } |
| |
| /** |
| * Visits a primitive value of the annotation. |
| * |
| * @param name |
| * the value name. |
| * @param value |
| * the actual value, whose type must be {@link Byte}, |
| * {@link Boolean}, {@link Character}, {@link Short}, |
| * {@link Integer} , {@link Long}, {@link Float}, {@link Double}, |
| * {@link String} or {@link Type} or OBJECT or ARRAY sort. This |
| * value can also be an array of byte, boolean, short, char, int, |
| * long, float or double values (this is equivalent to using |
| * {@link #visitArray visitArray} and visiting each array element |
| * in turn, but is more convenient). |
| */ |
| public void visit(String name, Object value) { |
| if (av != null) { |
| av.visit(name, value); |
| } |
| } |
| |
| /** |
| * Visits an enumeration value of the annotation. |
| * |
| * @param name |
| * the value name. |
| * @param desc |
| * the class descriptor of the enumeration class. |
| * @param value |
| * the actual enumeration value. |
| */ |
| public void visitEnum(String name, String desc, String value) { |
| if (av != null) { |
| av.visitEnum(name, desc, value); |
| } |
| } |
| |
| /** |
| * Visits a nested annotation value of the annotation. |
| * |
| * @param name |
| * the value name. |
| * @param desc |
| * the class descriptor of the nested annotation class. |
| * @return a visitor to visit the actual nested annotation value, or |
| * <tt>null</tt> if this visitor is not interested in visiting this |
| * nested annotation. <i>The nested annotation value must be fully |
| * visited before calling other methods on this annotation |
| * visitor</i>. |
| */ |
| public AnnotationVisitor visitAnnotation(String name, String desc) { |
| if (av != null) { |
| return av.visitAnnotation(name, desc); |
| } |
| return null; |
| } |
| |
| /** |
| * Visits an array value of the annotation. Note that arrays of primitive |
| * types (such as byte, boolean, short, char, int, long, float or double) |
| * can be passed as value to {@link #visit visit}. This is what |
| * {@link ClassReader} does. |
| * |
| * @param name |
| * the value name. |
| * @return a visitor to visit the actual array value elements, or |
| * <tt>null</tt> if this visitor is not interested in visiting these |
| * values. The 'name' parameters passed to the methods of this |
| * visitor are ignored. <i>All the array values must be visited |
| * before calling other methods on this annotation visitor</i>. |
| */ |
| public AnnotationVisitor visitArray(String name) { |
| if (av != null) { |
| return av.visitArray(name); |
| } |
| return null; |
| } |
| |
| /** |
| * Visits the end of the annotation. |
| */ |
| public void visitEnd() { |
| if (av != null) { |
| av.visitEnd(); |
| } |
| } |
| } |