001: /***
002: * ASM Guide
003: * Copyright (c) 2007 Eric Bruneton
004: * All rights reserved.
005: *
006: * Redistribution and use in source and binary forms, with or without
007: * modification, are permitted provided that the following conditions
008: * are met:
009: * 1. Redistributions of source code must retain the above copyright
010: * notice, this list of conditions and the following disclaimer.
011: * 2. Redistributions in binary form must reproduce the above copyright
012: * notice, this list of conditions and the following disclaimer in the
013: * documentation and/or other materials provided with the distribution.
014: * 3. Neither the name of the copyright holders nor the names of its
015: * contributors may be used to endorse or promote products derived from
016: * this software without specific prior written permission.
017: *
018: * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
019: * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
020: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
021: * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
022: * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
023: * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
024: * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
025: * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
026: * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
027: * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
028: * THE POSSIBILITY OF SUCH DAMAGE.
029: */package ch4.sec2;
030:
031: import static org.objectweb.asm.Opcodes.V1_5;
032:
033: import org.objectweb.asm.AnnotationVisitor;
034: import org.objectweb.asm.ClassAdapter;
035: import org.objectweb.asm.ClassVisitor;
036: import org.objectweb.asm.FieldVisitor;
037: import org.objectweb.asm.MethodVisitor;
038:
039: /**
040: * ASM Guide example class.
041: *
042: * @author Eric Bruneton
043: */
044: public class AddAnnotationAdapter extends ClassAdapter {
045:
046: private String annotationDesc;
047:
048: private boolean isAnnotationPresent;
049:
050: public AddAnnotationAdapter(ClassVisitor cv, String annotationDesc) {
051: super (cv);
052: this .annotationDesc = annotationDesc;
053: }
054:
055: public void visit(int version, int access, String name,
056: String signature, String super Name, String[] interfaces) {
057: int v = (version & 0xFF) < V1_5 ? V1_5 : version;
058: cv.visit(v, access, name, signature, super Name, interfaces);
059: }
060:
061: public AnnotationVisitor visitAnnotation(String desc,
062: boolean visible) {
063: if (visible && desc.equals(annotationDesc)) {
064: isAnnotationPresent = true;
065: }
066: return cv.visitAnnotation(desc, visible);
067: }
068:
069: public void visitInnerClass(String name, String outerName,
070: String innerName, int access) {
071: addAnnotation();
072: cv.visitInnerClass(name, outerName, innerName, access);
073: }
074:
075: public FieldVisitor visitField(int access, String name,
076: String desc, String signature, Object value) {
077: addAnnotation();
078: return cv.visitField(access, name, desc, signature, value);
079: }
080:
081: public MethodVisitor visitMethod(int access, String name,
082: String desc, String signature, String[] exceptions) {
083: addAnnotation();
084: return cv
085: .visitMethod(access, name, desc, signature, exceptions);
086: }
087:
088: public void visitEnd() {
089: addAnnotation();
090: cv.visitEnd();
091: }
092:
093: private void addAnnotation() {
094: if (!isAnnotationPresent) {
095: AnnotationVisitor av = cv.visitAnnotation(annotationDesc,
096: true);
097: if (av != null) {
098: av.visitEnd();
099: }
100: isAnnotationPresent = true;
101: }
102: }
103: }
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