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annotate test/runtime/8003720/Asmator.java @ 7186:dad48145e775

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8004199: Change the ASM package for Test8003720 Reviewed-by: kvn, jrose
author stefank
date Thu, 29 Nov 2012 23:02:52 +0100
parents d0aa87f04bd5
children
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1 /*
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2 * Copyright (c) 2012, Oracle and/or its affiliates. All rights reserved.
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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4 *
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5 * This code is free software; you can redistribute it and/or modify it
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6 * under the terms of the GNU General Public License version 2 only, as
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7 * published by the Free Software Foundation.
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8 *
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9 * This code is distributed in the hope that it will be useful, but WITHOUT
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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12 * version 2 for more details (a copy is included in the LICENSE file that
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13 * accompanied this code).
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14 *
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15 * You should have received a copy of the GNU General Public License version
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16 * 2 along with this work; if not, write to the Free Software Foundation,
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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18 *
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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20 * or visit www.oracle.com if you need additional information or have any
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21 * questions.
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22 *
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23 */
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24
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25 import jdk.internal.org.objectweb.asm.*;
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26
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27 class Asmator {
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28 static byte[] fixup(byte[] buf) throws java.io.IOException {
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29 ClassReader cr = new ClassReader(buf);
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30 ClassWriter cw = new ClassWriter(0);
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31 ClassVisitor cv = new ClassVisitor(Opcodes.ASM4, cw) {
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32 public MethodVisitor visitMethod(
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33 final int access,
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34 final String name,
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35 final String desc,
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36 final String signature,
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37 final String[] exceptions)
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38 {
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39 MethodVisitor mv = super.visitMethod(access,
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40 name,
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41 desc,
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42 signature,
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43 exceptions);
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44 if (mv == null) return null;
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45 if (name.equals("callme")) {
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46 // make receiver go dead!
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47 mv.visitInsn(Opcodes.ACONST_NULL);
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48 mv.visitVarInsn(Opcodes.ASTORE, 0);
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49 }
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50 return mv;
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51 }
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52 };
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53 cr.accept(cv, 0);
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54 return cw.toByteArray();
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55 }
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56 }