--- /dev/null 2016-07-01 10:21:58.952446902 +0300 +++ new/test/java/lang/annotation/ClassFileGenerator.java 2016-07-05 09:14:42.871085021 +0300 @@ -0,0 +1,139 @@ +/* +* Copyright (c) 2016, 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. Oracle designates this +* particular file as subject to the "Classpath" exception as provided +* by Oracle in the LICENSE file that accompanied this code. +* +* 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. +*/ + +/* + * Create class file using ASM, slightly modified the ASMifier output +*/ + + + +import java.io.File; +import java.io.FileOutputStream; +import java.io.IOException; +import jdk.internal.org.objectweb.asm.*; + + +public class ClassFileGenerator { + + public static void main(String... args) throws Exception { + classFileWriter("AnnotationWithVoidReturn.class", AnnoationWithVoidReturnDump.dump()); + classFileWriter("AnnotationWithParameter.class", AnnoationWithParameterDump.dump()); + } + + private static void classFileWriter(String name, byte[] contents) throws IOException { + try (FileOutputStream fos = new FileOutputStream(new File(System.getProperty("test.classes"), + name))) { + fos.write(contents); + } + } + + /* + Following code create equivalent classfile, + which is not allowed by javac. + + @Retention(RetentionPolicy.RUNTIME) + public @interface AnnotationWithVoidReturn { + void m() default 1; + } + */ + + private static class AnnoationWithVoidReturnDump implements Opcodes { + public static byte[] dump() throws Exception { + ClassWriter cw = new ClassWriter(0); + MethodVisitor mv; + AnnotationVisitor av0; + + cw.visit(52, ACC_PUBLIC + ACC_ANNOTATION + ACC_ABSTRACT + +ACC_INTERFACE, + "AnnotationWithVoidReturn", null, + "java/lang/Object", new String[]{"java/lang/annotation/Annotation"}); + + { + av0 = cw.visitAnnotation("Ljava/lang/annotation/Retention;", true); + av0.visitEnum("value", "Ljava/lang/annotation/RetentionPolicy;", + "RUNTIME"); + av0.visitEnd(); + } + { + mv = cw.visitMethod(ACC_PUBLIC + ACC_ABSTRACT, "m", "()V", null, null); + mv.visitEnd(); + } + { + av0 = mv.visitAnnotationDefault(); + av0.visit(null, new Integer(1)); + av0.visitEnd(); + } + cw.visitEnd(); + + return cw.toByteArray(); + + } + } + + /* + Following code create equivalent classfile, + which is not allowed by javac. + + @Retention(RetentionPolicy.RUNTIME) + public @interface AnnotationWithParameter { + int m(int x); + } + */ + + private static class AnnoationWithParameterDump implements Opcodes { + public static byte[] dump() throws Exception { + + ClassWriter cw = new ClassWriter(0); + MethodVisitor mv; + AnnotationVisitor av0; + + cw.visit(52, ACC_PUBLIC + ACC_ANNOTATION + ACC_ABSTRACT + ACC_INTERFACE, + "AnnotationWithParameter", null, + "java/lang/Object", new String[]{"java/lang/annotation/Annotation"}); + + { + av0 = cw.visitAnnotation("Ljava/lang/annotation/Retention;", true); + av0.visitEnum("value", "Ljava/lang/annotation/RetentionPolicy;", + "RUNTIME"); + av0.visitEnd(); + } + { + mv = cw.visitMethod(ACC_PUBLIC + ACC_ABSTRACT, + "badValue", + "(I)I", // Bad method with a parameter + null, null); + mv.visitEnd(); + } + { + av0 = mv.visitAnnotationDefault(); + av0.visit(null, new Integer(-1)); + av0.visitEnd(); + } + cw.visitEnd(); + + return cw.toByteArray(); + } + } + +}