| /* |
| * Copyright (c) 2013, 2018, 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. |
| * |
| * 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 vm.share.transform; |
| |
| import jdk.internal.org.objectweb.asm.AnnotationVisitor; |
| |
| public abstract class AnnotationAppender { |
| private final String desc; |
| private final boolean visible; |
| private boolean annotationPresent; |
| |
| public AnnotationAppender(String desc, boolean visible) { |
| this.desc = desc; |
| this.visible = visible; |
| } |
| |
| public void checkAnnotation(String desc, boolean isVisible) { |
| annotationPresent |= visible == isVisible && this.desc.equals(desc); |
| } |
| |
| public void addAnnotation(VisitAnnotation func) { |
| if (shouldAdd()) { |
| AnnotationVisitor av = func.visit(desc, true); |
| if (av != null) { |
| postCreate(av); |
| av.visitEnd(); |
| annotationPresent = true; |
| } |
| } |
| } |
| |
| protected boolean shouldAdd() { |
| return !annotationPresent; |
| } |
| |
| protected abstract void postCreate(AnnotationVisitor av); |
| |
| @FunctionalInterface |
| public static interface VisitAnnotation { |
| AnnotationVisitor visit(String desc, boolean visible); |
| } |
| } |