| /*** |
| * 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.eclipse.persistence.internal.libraries.asm.util; |
| |
| import org.eclipse.persistence.internal.libraries.asm.AnnotationVisitor; |
| import org.eclipse.persistence.internal.libraries.asm.Opcodes; |
| import org.eclipse.persistence.internal.libraries.asm.Type; |
| |
| /** |
| * An {@link AnnotationVisitor} that checks that its methods are properly used. |
| * |
| * @author Eric Bruneton |
| */ |
| public class CheckAnnotationAdapter extends AnnotationVisitor { |
| |
| private final boolean named; |
| |
| private boolean end; |
| |
| public CheckAnnotationAdapter(final AnnotationVisitor av) { |
| this(av, true); |
| } |
| |
| CheckAnnotationAdapter(final AnnotationVisitor av, final boolean named) { |
| super(Opcodes.ASM6, av); |
| this.named = named; |
| } |
| |
| @Override |
| public void visit(final String name, final Object value) { |
| checkEnd(); |
| checkName(name); |
| if (!(value instanceof Byte || value instanceof Boolean |
| || value instanceof Character || value instanceof Short |
| || value instanceof Integer || value instanceof Long |
| || value instanceof Float || value instanceof Double |
| || value instanceof String || value instanceof Type |
| || value instanceof byte[] || value instanceof boolean[] |
| || value instanceof char[] || value instanceof short[] |
| || value instanceof int[] || value instanceof long[] |
| || value instanceof float[] || value instanceof double[])) { |
| throw new IllegalArgumentException("Invalid annotation value"); |
| } |
| if (value instanceof Type) { |
| int sort = ((Type) value).getSort(); |
| if (sort == Type.METHOD) { |
| throw new IllegalArgumentException("Invalid annotation value"); |
| } |
| } |
| if (av != null) { |
| av.visit(name, value); |
| } |
| } |
| |
| @Override |
| public void visitEnum(final String name, final String desc, |
| final String value) { |
| checkEnd(); |
| checkName(name); |
| CheckMethodAdapter.checkDesc(desc, false); |
| if (value == null) { |
| throw new IllegalArgumentException("Invalid enum value"); |
| } |
| if (av != null) { |
| av.visitEnum(name, desc, value); |
| } |
| } |
| |
| @Override |
| public AnnotationVisitor visitAnnotation(final String name, |
| final String desc) { |
| checkEnd(); |
| checkName(name); |
| CheckMethodAdapter.checkDesc(desc, false); |
| return new CheckAnnotationAdapter(av == null ? null |
| : av.visitAnnotation(name, desc)); |
| } |
| |
| @Override |
| public AnnotationVisitor visitArray(final String name) { |
| checkEnd(); |
| checkName(name); |
| return new CheckAnnotationAdapter(av == null ? null |
| : av.visitArray(name), false); |
| } |
| |
| @Override |
| public void visitEnd() { |
| checkEnd(); |
| end = true; |
| if (av != null) { |
| av.visitEnd(); |
| } |
| } |
| |
| private void checkEnd() { |
| if (end) { |
| throw new IllegalStateException( |
| "Cannot call a visit method after visitEnd has been called"); |
| } |
| } |
| |
| private void checkName(final String name) { |
| if (named && name == null) { |
| throw new IllegalArgumentException( |
| "Annotation value name must not be null"); |
| } |
| } |
| } |