1 /* 2 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 3 * 4 * This code is free software; you can redistribute it and/or modify it 5 * under the terms of the GNU General Public License version 2 only, as 6 * published by the Free Software Foundation. Oracle designates this 7 * particular file as subject to the "Classpath" exception as provided 8 * by Oracle in the LICENSE file that accompanied this code. 9 * 10 * This code is distributed in the hope that it will be useful, but WITHOUT 11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 12 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 13 * version 2 for more details (a copy is included in the LICENSE file that 14 * accompanied this code). 15 * 16 * You should have received a copy of the GNU General Public License version 17 * 2 along with this work; if not, write to the Free Software Foundation, 18 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 19 * 20 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 21 * or visit www.oracle.com if you need additional information or have any 22 * questions. 23 */ 24 25 /* 26 * This file is available under and governed by the GNU General Public 27 * License version 2 only, as published by the Free Software Foundation. 28 * However, the following notice accompanied the original version of this 29 * file: 30 * 31 * ASM: a very small and fast Java bytecode manipulation framework 32 * Copyright (c) 2000-2011 INRIA, France Telecom 33 * All rights reserved. 34 * 35 * Redistribution and use in source and binary forms, with or without 36 * modification, are permitted provided that the following conditions 37 * are met: 38 * 1. Redistributions of source code must retain the above copyright 39 * notice, this list of conditions and the following disclaimer. 40 * 2. Redistributions in binary form must reproduce the above copyright 41 * notice, this list of conditions and the following disclaimer in the 42 * documentation and/or other materials provided with the distribution. 43 * 3. Neither the name of the copyright holders nor the names of its 44 * contributors may be used to endorse or promote products derived from 45 * this software without specific prior written permission. 46 * 47 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 48 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 49 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 50 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE 51 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 52 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 53 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 54 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 55 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 56 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF 57 * THE POSSIBILITY OF SUCH DAMAGE. 58 */ 59 package jdk.internal.org.objectweb.asm.util; 60 61 import jdk.internal.org.objectweb.asm.AnnotationVisitor; 62 import jdk.internal.org.objectweb.asm.Opcodes; 63 import jdk.internal.org.objectweb.asm.Type; 64 65 /** 66 * An {@link AnnotationVisitor} that checks that its methods are properly used. 67 * 68 * @author Eric Bruneton 69 */ 70 public class CheckAnnotationAdapter extends AnnotationVisitor { 71 72 private final boolean named; 73 74 private boolean end; 75 76 public CheckAnnotationAdapter(final AnnotationVisitor av) { 77 this(av, true); 78 } 79 80 CheckAnnotationAdapter(final AnnotationVisitor av, final boolean named) { 81 super(Opcodes.ASM5, av); 82 this.named = named; 83 } 84 85 @Override 86 public void visit(final String name, final Object value) { 87 checkEnd(); 88 checkName(name); 89 if (!(value instanceof Byte || value instanceof Boolean 90 || value instanceof Character || value instanceof Short 91 || value instanceof Integer || value instanceof Long 92 || value instanceof Float || value instanceof Double 93 || value instanceof String || value instanceof Type 94 || value instanceof byte[] || value instanceof boolean[] 95 || value instanceof char[] || value instanceof short[] 96 || value instanceof int[] || value instanceof long[] 97 || value instanceof float[] || value instanceof double[])) { 98 throw new IllegalArgumentException("Invalid annotation value"); 99 } 100 if (value instanceof Type) { 101 int sort = ((Type) value).getSort(); 102 if (sort != Type.OBJECT && sort != Type.ARRAY) { 103 throw new IllegalArgumentException("Invalid annotation value"); 104 } 105 } 106 if (av != null) { 107 av.visit(name, value); 108 } 109 } 110 111 @Override 112 public void visitEnum(final String name, final String desc, 113 final String value) { 114 checkEnd(); 115 checkName(name); 116 CheckMethodAdapter.checkDesc(desc, false); 117 if (value == null) { 118 throw new IllegalArgumentException("Invalid enum value"); 119 } 120 if (av != null) { 121 av.visitEnum(name, desc, value); 122 } 123 } 124 125 @Override 126 public AnnotationVisitor visitAnnotation(final String name, 127 final String desc) { 128 checkEnd(); 129 checkName(name); 130 CheckMethodAdapter.checkDesc(desc, false); 131 return new CheckAnnotationAdapter(av == null ? null 132 : av.visitAnnotation(name, desc)); 133 } 134 135 @Override 136 public AnnotationVisitor visitArray(final String name) { 137 checkEnd(); 138 checkName(name); 139 return new CheckAnnotationAdapter(av == null ? null 140 : av.visitArray(name), false); 141 } 142 143 @Override 144 public void visitEnd() { 145 checkEnd(); 146 end = true; 147 if (av != null) { 148 av.visitEnd(); 149 } 150 } 151 152 private void checkEnd() { 153 if (end) { 154 throw new IllegalStateException( 155 "Cannot call a visit method after visitEnd has been called"); 156 } 157 } 158 159 private void checkName(final String name) { 160 if (named && name == null) { 161 throw new IllegalArgumentException( 162 "Annotation value name must not be null"); 163 } 164 } 165 }