| /*** |
| * 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.util; |
| |
| import org.apache.tajo.org.objectweb.asm.AnnotationVisitor; |
| import org.apache.tajo.org.objectweb.asm.Attribute; |
| import org.apache.tajo.org.objectweb.asm.FieldVisitor; |
| import org.apache.tajo.org.objectweb.asm.Opcodes; |
| |
| /** |
| * A {@link org.apache.tajo.org.objectweb.asm.FieldVisitor} that checks that its methods are properly used. |
| */ |
| public class CheckFieldAdapter extends FieldVisitor { |
| |
| private boolean end; |
| |
| /** |
| * Constructs a new {@link CheckFieldAdapter}. <i>Subclasses must not use |
| * this constructor</i>. Instead, they must use the |
| * {@link #CheckFieldAdapter(int, FieldVisitor)} version. |
| * |
| * @param fv |
| * the field visitor to which this adapter must delegate calls. |
| */ |
| public CheckFieldAdapter(final FieldVisitor fv) { |
| this(Opcodes.ASM4, fv); |
| } |
| |
| /** |
| * Constructs a new {@link CheckFieldAdapter}. |
| * |
| * @param api |
| * the ASM API version implemented by this visitor. Must be one |
| * of {@link Opcodes#ASM4}. |
| * @param fv |
| * the field visitor to which this adapter must delegate calls. |
| */ |
| protected CheckFieldAdapter(final int api, final FieldVisitor fv) { |
| super(api, fv); |
| } |
| |
| @Override |
| public AnnotationVisitor visitAnnotation(final String desc, |
| final boolean visible) { |
| checkEnd(); |
| CheckMethodAdapter.checkDesc(desc, false); |
| return new CheckAnnotationAdapter(super.visitAnnotation(desc, visible)); |
| } |
| |
| @Override |
| public void visitAttribute(final Attribute attr) { |
| checkEnd(); |
| if (attr == null) { |
| throw new IllegalArgumentException( |
| "Invalid attribute (must not be null)"); |
| } |
| super.visitAttribute(attr); |
| } |
| |
| @Override |
| public void visitEnd() { |
| checkEnd(); |
| end = true; |
| super.visitEnd(); |
| } |
| |
| private void checkEnd() { |
| if (end) { |
| throw new IllegalStateException( |
| "Cannot call a visit method after visitEnd has been called"); |
| } |
| } |
| } |