| /*** |
| * ASM tests |
| * 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.objectweb.asm.test.cases; |
| |
| import java.io.IOException; |
| |
| import org.objectweb.asm.ClassReader; |
| import org.objectweb.asm.ClassVisitor; |
| import org.objectweb.asm.ClassWriter; |
| import org.objectweb.asm.FieldVisitor; |
| import org.objectweb.asm.Label; |
| import org.objectweb.asm.MethodVisitor; |
| import org.objectweb.asm.Opcodes; |
| |
| /** |
| * Generates classes with StackMap and StackMapTable attributes. Covers all |
| * frame (FULL, SAME, etc.) and frame element types (TOP, NULL, INTEGER, etc.). |
| * Also covers the V1_6 class version. |
| * |
| * @author Eric Bruneton |
| */ |
| public class Frames extends Generator { |
| |
| final static int M = ACC_STATIC; |
| final static String I1 = "Ljava/io/Serializable;"; |
| final static String I2 = "Ljava/lang/Comparable;"; |
| |
| @Override |
| public void generate(final String dir) throws IOException { |
| byte[] b = dump(); |
| ClassWriter cw = new ClassWriter(0); |
| ClassReader cr = new ClassReader(b); |
| cr.accept(new RenameAdapter(cw), ClassReader.EXPAND_FRAMES); |
| |
| generate(dir, "pkg/FrameTable.class", b); |
| generate(dir, "pkg/FrameMap.class", cw.toByteArray()); |
| } |
| |
| public byte[] dump() { |
| ClassWriter cw = new ClassWriter(ClassWriter.COMPUTE_MAXS); |
| MethodVisitor mv; |
| FieldVisitor fv; |
| |
| cw.visit(V1_6, ACC_PUBLIC + ACC_SUPER, "pkg/FrameTable", null, |
| "java/lang/Object", null); |
| |
| fv = cw.visitField(M, "long", "Ljava/lang/Long;", null, null); |
| fv.visitEnd(); |
| |
| fv = cw.visitField(M, "double", "Ljava/lang/Double;", null, null); |
| fv.visitEnd(); |
| |
| fv = cw.visitField(M, "number", "Ljava/lang/Number;", null, null); |
| fv.visitEnd(); |
| |
| fv = cw.visitField(M, "serializable", I1, null, null); |
| fv.visitEnd(); |
| |
| fv = cw.visitField(M, "comparable", I2, null, null); |
| fv.visitEnd(); |
| |
| fv = cw.visitField(M, "longArray", "[Ljava/lang/Long;", null, null); |
| fv.visitEnd(); |
| |
| fv = cw.visitField(M, "intArray", "[I", null, null); |
| fv.visitEnd(); |
| |
| fv = cw.visitField(M, "floatArray", "[F", null, null); |
| fv.visitEnd(); |
| |
| fv = cw.visitField(M, "objectArray", "[Ljava/lang/Object;", null, null); |
| fv.visitEnd(); |
| |
| mv = cw.visitMethod(ACC_PUBLIC, "<init>", "(Ljava/lang/Object;)V", |
| null, null); |
| mv.visitCode(); |
| mv.visitVarInsn(ALOAD, 0); |
| mv.visitMethodInsn(INVOKESPECIAL, "java/lang/Object", "<init>", "()V"); |
| mv.visitInsn(RETURN); |
| mv.visitMaxs(0, 0); |
| mv.visitEnd(); |
| |
| uninitializedThisType(cw); |
| uninitializedLocalType(cw); |
| uninitializedStackType(cw); |
| nullType(cw); |
| topType(cw); |
| arrayTypes(cw); |
| |
| mergeTypes(cw); |
| mergeStackTypes(cw); |
| mergeNullArray(cw); |
| |
| appendAndChopFrame(cw); |
| sameLocals1stackItemFrame(cw); |
| sameLocals1stackItemFrame2(cw); |
| sameLocals1stackItemFrameExtended(cw); |
| sameFrameExtended(cw); |
| |
| deadCode(cw); |
| |
| cw.visitEnd(); |
| |
| return cw.toByteArray(); |
| } |
| |
| private void uninitializedThisType(final ClassWriter cw) { |
| MethodVisitor mv = cw.visitMethod(ACC_PUBLIC, "<init>", "(I)V", null, |
| null); |
| mv.visitCode(); |
| mv.visitVarInsn(ALOAD, 0); |
| Label l0 = new Label(); |
| mv.visitLabel(l0); |
| mv.visitTypeInsn(NEW, "pkg/FrameTable"); |
| mv.visitInsn(DUP); |
| mv.visitVarInsn(ILOAD, 1); |
| Label l1 = new Label(); |
| mv.visitJumpInsn(IFNE, l1); |
| mv.visitInsn(ACONST_NULL); |
| Label l2 = new Label(); |
| mv.visitJumpInsn(GOTO, l2); |
| mv.visitFrame(F_FULL, 2, new Object[] { UNINITIALIZED_THIS, INTEGER }, |
| 3, new Object[] { UNINITIALIZED_THIS, l0, l0 }); |
| mv.visitLabel(l1); |
| mv.visitTypeInsn(NEW, "java/lang/Object"); |
| mv.visitInsn(DUP); |
| mv.visitMethodInsn(INVOKESPECIAL, "java/lang/Object", "<init>", "()V"); |
| mv.visitFrame(F_FULL, 2, new Object[] { UNINITIALIZED_THIS, INTEGER }, |
| 4, new Object[] { UNINITIALIZED_THIS, l0, l0, |
| "java/lang/Object" }); |
| mv.visitLabel(l2); |
| mv.visitMethodInsn(INVOKESPECIAL, "pkg/FrameTable", "<init>", |
| "(Ljava/lang/Object;)V"); |
| mv.visitMethodInsn(INVOKESPECIAL, "pkg/FrameTable", "<init>", |
| "(Ljava/lang/Object;)V"); |
| mv.visitInsn(RETURN); |
| mv.visitMaxs(0, 0); |
| mv.visitEnd(); |
| } |
| |
| private void uninitializedLocalType(final ClassWriter cw) { |
| MethodVisitor mv = cw.visitMethod(ACC_PUBLIC, "uninitializedLocalType", |
| "(Z)V", null, null); |
| mv.visitCode(); |
| Label l0 = new Label(); |
| mv.visitLabel(l0); |
| mv.visitTypeInsn(NEW, "java/lang/Long"); |
| mv.visitVarInsn(ASTORE, 2); |
| mv.visitVarInsn(ALOAD, 2); |
| mv.visitVarInsn(ILOAD, 1); |
| Label l1 = new Label(); |
| mv.visitJumpInsn(IFEQ, l1); |
| mv.visitInsn(LCONST_0); |
| Label l2 = new Label(); |
| mv.visitJumpInsn(GOTO, l2); |
| mv.visitFrame(F_FULL, 3, |
| new Object[] { "pkg/FrameTable", INTEGER, l0 }, 1, |
| new Object[] { l0 }); |
| mv.visitLabel(l1); |
| mv.visitInsn(LCONST_1); |
| mv.visitFrame(F_FULL, 3, |
| new Object[] { "pkg/FrameTable", INTEGER, l0 }, 2, |
| new Object[] { l0, LONG }); |
| mv.visitLabel(l2); |
| mv.visitMethodInsn(INVOKESPECIAL, "java/lang/Long", "<init>", "(J)V"); |
| mv.visitInsn(RETURN); |
| mv.visitMaxs(0, 0); |
| mv.visitEnd(); |
| } |
| |
| private void uninitializedStackType(final ClassWriter cw) { |
| MethodVisitor mv = cw.visitMethod(ACC_PUBLIC, "uninitializedStackType", |
| "(Z)V", null, null); |
| mv.visitCode(); |
| Label l0 = new Label(); |
| mv.visitLabel(l0); |
| mv.visitTypeInsn(NEW, "java/lang/Long"); |
| mv.visitInsn(DUP); |
| mv.visitVarInsn(ILOAD, 1); |
| Label l1 = new Label(); |
| mv.visitJumpInsn(IFEQ, l1); |
| mv.visitInsn(LCONST_0); |
| mv.visitMethodInsn(INVOKESPECIAL, "java/lang/Long", "<init>", "(J)V"); |
| Label l2 = new Label(); |
| mv.visitJumpInsn(GOTO, l2); |
| mv.visitFrame(F_FULL, 1, new Object[] { "pkg/FrameTable" }, 2, |
| new Object[] { l0, l0 }); |
| mv.visitLabel(l1); |
| mv.visitInsn(LCONST_1); |
| mv.visitMethodInsn(INVOKESPECIAL, "java/lang/Long", "<init>", "(J)V"); |
| mv.visitFrame(F_SAME1, 0, null, 1, new Object[] { "java/lang/Long" }); |
| mv.visitLabel(l2); |
| mv.visitVarInsn(ASTORE, 2); |
| mv.visitInsn(RETURN); |
| mv.visitMaxs(0, 0); |
| mv.visitEnd(); |
| } |
| |
| private void nullType(final ClassWriter cw) { |
| MethodVisitor mv = cw.visitMethod(ACC_PUBLIC, "nullType", |
| "(Ljava/lang/String;Ljava/lang/String;)V", null, null); |
| mv.visitCode(); |
| mv.visitInsn(ACONST_NULL); |
| mv.visitVarInsn(ASTORE, 2); |
| mv.visitVarInsn(ALOAD, 0); |
| mv.visitInsn(ACONST_NULL); |
| mv.visitVarInsn(ALOAD, 1); |
| Label l0 = new Label(); |
| mv.visitJumpInsn(IFNONNULL, l0); |
| mv.visitVarInsn(ALOAD, 2); |
| Label l1 = new Label(); |
| mv.visitJumpInsn(GOTO, l1); |
| mv.visitFrame(F_FULL, 3, new Object[] { "pkg/FrameTable", |
| "java/lang/String", NULL }, 2, new Object[] { "pkg/FrameTable", |
| NULL }); |
| mv.visitLabel(l0); |
| mv.visitVarInsn(ALOAD, 1); |
| mv.visitFrame(F_FULL, 3, new Object[] { "pkg/FrameTable", |
| "java/lang/String", NULL }, 3, new Object[] { "pkg/FrameTable", |
| NULL, "java/lang/String" }); |
| mv.visitLabel(l1); |
| mv.visitMethodInsn(INVOKEVIRTUAL, "pkg/FrameTable", "nullType", |
| "(Ljava/lang/String;Ljava/lang/String;)V"); |
| mv.visitInsn(RETURN); |
| mv.visitMaxs(0, 0); |
| mv.visitEnd(); |
| } |
| |
| private void topType(final ClassWriter cw) { |
| MethodVisitor mv = cw.visitMethod(ACC_PUBLIC, "topType", |
| "(ZBCSIFJDLjava/lang/Object;)V", null, null); |
| mv.visitCode(); |
| mv.visitVarInsn(ILOAD, 5); |
| mv.visitVarInsn(ISTORE, 13); |
| mv.visitVarInsn(ILOAD, 1); |
| Label l0 = new Label(); |
| mv.visitJumpInsn(IFEQ, l0); |
| mv.visitInsn(RETURN); |
| mv.visitFrame(F_APPEND, 2, new Object[] { TOP, INTEGER }, 0, null); |
| mv.visitLabel(l0); |
| mv.visitInsn(RETURN); |
| mv.visitMaxs(0, 0); |
| mv.visitEnd(); |
| } |
| |
| private void arrayTypes(final ClassWriter cw) { |
| MethodVisitor mv = cw.visitMethod(ACC_PUBLIC, "fullFrame", |
| "(Ljava/lang/String;[[Z[B[C[S[I[F[J[D[Ljava/lang/Object;)V", |
| null, null); |
| mv.visitCode(); |
| mv.visitLdcInsn(new Long(11L)); |
| mv.visitVarInsn(LSTORE, 11); |
| mv.visitLdcInsn(new Long(11L)); |
| mv.visitVarInsn(LSTORE, 13); |
| mv.visitLdcInsn(new Long(11L)); |
| mv.visitVarInsn(LSTORE, 15); |
| mv.visitLdcInsn(new Long(11L)); |
| mv.visitVarInsn(LSTORE, 17); |
| mv.visitVarInsn(ALOAD, 1); |
| Label l0 = new Label(); |
| mv.visitJumpInsn(IFNONNULL, l0); |
| mv.visitInsn(RETURN); |
| mv.visitFrame(F_FULL, 15, new Object[] { "pkg/FrameTable", |
| "java/lang/String", "[[Z", "[B", "[C", "[S", "[I", "[F", "[J", |
| "[D", "[Ljava/lang/Object;", LONG, LONG, LONG, LONG }, 0, |
| new Object[] {}); |
| mv.visitLabel(l0); |
| mv.visitInsn(RETURN); |
| mv.visitMaxs(0, 0); |
| mv.visitEnd(); |
| } |
| |
| private void mergeTypes(final ClassWriter cw) { |
| MethodVisitor mv = cw.visitMethod(ACC_PUBLIC, "mergeTypes", "(Z)V", |
| null, null); |
| mv.visitCode(); |
| Label l0 = new Label(); |
| mv.visitFieldInsn(GETSTATIC, "pkg/FrameTable", "long", |
| "Ljava/lang/Long;"); |
| mv.visitVarInsn(ASTORE, 2); |
| mv.visitFieldInsn(GETSTATIC, "pkg/FrameTable", "number", |
| "Ljava/lang/Number;"); |
| mv.visitVarInsn(ASTORE, 3); |
| mv.visitFieldInsn(GETSTATIC, "pkg/FrameTable", "number", |
| "Ljava/lang/Long;"); |
| mv.visitVarInsn(ASTORE, 4); |
| mv.visitFieldInsn(GETSTATIC, "pkg/FrameTable", "comparable", |
| "Ljava/lang/Comparable;"); |
| mv.visitVarInsn(ASTORE, 5); |
| mv.visitInsn(ACONST_NULL); |
| mv.visitVarInsn(ASTORE, 6); |
| mv.visitFieldInsn(GETSTATIC, "pkg/FrameTable", "double", |
| "Ljava/lang/Double;"); |
| mv.visitVarInsn(ASTORE, 7); |
| mv.visitInsn(ICONST_0); |
| mv.visitVarInsn(ISTORE, 8); |
| mv.visitFieldInsn(GETSTATIC, "pkg/FrameTable", "intArray", "[I"); |
| mv.visitVarInsn(ASTORE, 9); |
| mv.visitFieldInsn(GETSTATIC, "pkg/FrameTable", "double", |
| "Ljava/lang/Double;"); |
| mv.visitVarInsn(ASTORE, 10); |
| mv.visitInsn(ACONST_NULL); |
| mv.visitVarInsn(ASTORE, 11); |
| |
| mv.visitFrame(F_FULL, 12, |
| new Object[] { "pkg/FrameTable", INTEGER, "java/lang/Number", |
| "java/lang/Number", "java/lang/Number", |
| "java/lang/Object", NULL, "java/lang/Double", TOP, |
| "java/lang/Object", "java/lang/Object", |
| "[Ljava/lang/Object;" }, 0, null); |
| mv.visitLabel(l0); |
| mv.visitVarInsn(ALOAD, 11); |
| mv.visitInsn(ICONST_0); |
| mv.visitInsn(ACONST_NULL); |
| mv.visitInsn(AASTORE); |
| |
| mv.visitFieldInsn(GETSTATIC, "pkg/FrameTable", "double", |
| "Ljava/lang/Double;"); |
| mv.visitVarInsn(ASTORE, 2); |
| mv.visitFieldInsn(GETSTATIC, "pkg/FrameTable", "double", |
| "Ljava/lang/Double;"); |
| mv.visitVarInsn(ASTORE, 3); |
| mv.visitFieldInsn(GETSTATIC, "pkg/FrameTable", "number", |
| "Ljava/lang/Number;"); |
| mv.visitVarInsn(ASTORE, 4); |
| mv.visitFieldInsn(GETSTATIC, "pkg/FrameTable", "serializable", |
| "Ljava/io/Serializable;"); |
| mv.visitVarInsn(ASTORE, 5); |
| mv.visitInsn(ACONST_NULL); |
| mv.visitVarInsn(ASTORE, 6); |
| mv.visitInsn(ACONST_NULL); |
| mv.visitVarInsn(ASTORE, 7); |
| mv.visitInsn(ACONST_NULL); |
| mv.visitVarInsn(ASTORE, 8); |
| mv.visitFieldInsn(GETSTATIC, "pkg/FrameTable", "floatArray", "[F"); |
| mv.visitVarInsn(ASTORE, 9); |
| mv.visitFieldInsn(GETSTATIC, "pkg/FrameTable", "intArray", "[I"); |
| mv.visitVarInsn(ASTORE, 10); |
| mv.visitInsn(ICONST_1); |
| mv.visitTypeInsn(ANEWARRAY, "java/lang/Object"); |
| mv.visitVarInsn(ASTORE, 11); |
| |
| mv.visitJumpInsn(GOTO, l0); |
| mv.visitMaxs(0, 0); |
| mv.visitEnd(); |
| } |
| |
| private void mergeStackTypes(final ClassWriter cw) { |
| MethodVisitor mv = cw.visitMethod(ACC_PUBLIC, "mergeStackTypes", |
| "(Z)V", null, null); |
| mv.visitCode(); |
| mv.visitInsn(ICONST_0); |
| mv.visitInsn(ICONST_1); |
| mv.visitVarInsn(ILOAD, 1); |
| Label l0 = new Label(); |
| mv.visitJumpInsn(IFEQ, l0); |
| mv.visitInsn(ICONST_0); |
| Label l1 = new Label(); |
| mv.visitJumpInsn(GOTO, l1); |
| mv.visitFrame(F_FULL, 1, new Object[] { "pkg/FrameTable" }, 2, |
| new Object[] { INTEGER, INTEGER }); |
| mv.visitLabel(l0); |
| mv.visitInsn(DUP); |
| mv.visitFrame(F_FULL, 1, new Object[] { "pkg/FrameTable" }, 3, |
| new Object[] { INTEGER, INTEGER, INTEGER }); |
| mv.visitLabel(l1); |
| mv.visitInsn(RETURN); |
| mv.visitMaxs(0, 0); |
| mv.visitEnd(); |
| } |
| |
| private void mergeNullArray(final ClassWriter cw) { |
| MethodVisitor mv = cw.visitMethod(ACC_PUBLIC, "mergeNullArray", "(Z)I", |
| null, null); |
| mv.visitCode(); |
| mv.visitVarInsn(ILOAD, 1); |
| Label l1 = new Label(); |
| mv.visitJumpInsn(IFEQ, l1); |
| mv.visitInsn(ACONST_NULL); |
| mv.visitVarInsn(ASTORE, 2); |
| mv.visitVarInsn(ILOAD, 1); |
| Label l2 = new Label(); |
| mv.visitJumpInsn(IFEQ, l2); |
| mv.visitFieldInsn(GETSTATIC, "pkg/FrameTable", "longArray", |
| "[Ljava/lang/Long;"); |
| mv.visitVarInsn(ASTORE, 2); |
| mv.visitFrame(F_APPEND, 1, new Object[] { "[Ljava/lang/Long;" }, 0, |
| null); |
| mv.visitLabel(l2); |
| mv.visitVarInsn(ALOAD, 2); |
| Label l3 = new Label(); |
| mv.visitJumpInsn(IFNULL, l3); |
| mv.visitVarInsn(ALOAD, 2); |
| mv.visitInsn(ARRAYLENGTH); |
| Label l4 = new Label(); |
| mv.visitJumpInsn(IFNE, l4); |
| mv.visitFrame(F_SAME, 0, null, 0, null); |
| mv.visitLabel(l3); |
| mv.visitInsn(ACONST_NULL); |
| mv.visitVarInsn(ASTORE, 3); |
| Label l5 = new Label(); |
| mv.visitJumpInsn(GOTO, l5); |
| mv.visitFrame(F_SAME, 0, null, 0, null); |
| mv.visitLabel(l4); |
| mv.visitVarInsn(ALOAD, 2); |
| mv.visitInsn(ICONST_0); |
| mv.visitInsn(AALOAD); |
| mv.visitVarInsn(ASTORE, 3); |
| mv.visitVarInsn(ILOAD, 1); |
| mv.visitJumpInsn(IFNE, l5); |
| mv.visitInsn(ACONST_NULL); |
| mv.visitVarInsn(ASTORE, 3); |
| mv.visitFrame(F_SAME, 0, null, 0, null); |
| mv.visitLabel(l5); |
| mv.visitVarInsn(ILOAD, 1); |
| mv.visitInsn(IRETURN); |
| mv.visitFrame(F_CHOP, 1, null, 0, null); |
| mv.visitLabel(l1); |
| mv.visitVarInsn(ILOAD, 1); |
| mv.visitInsn(IRETURN); |
| mv.visitMaxs(0, 0); |
| mv.visitEnd(); |
| } |
| |
| private void appendAndChopFrame(final ClassWriter cw) { |
| MethodVisitor mv = cw.visitMethod(ACC_PUBLIC, "appendAndChopFrame", |
| "(I)V", null, null); |
| mv.visitCode(); |
| mv.visitInsn(ICONST_0); |
| mv.visitVarInsn(ISTORE, 2); |
| mv.visitFrame(F_APPEND, 1, new Object[] { INTEGER }, 0, null); |
| Label l0 = new Label(); |
| mv.visitLabel(l0); |
| mv.visitVarInsn(ILOAD, 2); |
| mv.visitVarInsn(ILOAD, 1); |
| Label l1 = new Label(); |
| mv.visitJumpInsn(IF_ICMPGE, l1); |
| mv.visitIincInsn(2, 1); |
| mv.visitJumpInsn(GOTO, l0); |
| mv.visitFrame(F_CHOP, 1, null, 0, null); |
| mv.visitLabel(l1); |
| mv.visitInsn(RETURN); |
| mv.visitMaxs(0, 0); |
| mv.visitEnd(); |
| } |
| |
| private void sameLocals1stackItemFrame(final ClassWriter cw) { |
| MethodVisitor mv = cw.visitMethod(ACC_PUBLIC, |
| "sameLocals1stackItemFrame", "()I", null, null); |
| mv.visitCode(); |
| Label l0 = new Label(); |
| Label l1 = new Label(); |
| mv.visitTryCatchBlock(l0, l1, l0, null); |
| mv.visitInsn(ICONST_0); |
| mv.visitInsn(IRETURN); |
| mv.visitFrame(F_SAME1, 0, null, 1, |
| new Object[] { "java/lang/Throwable" }); |
| mv.visitLabel(l0); |
| mv.visitVarInsn(ASTORE, 1); |
| mv.visitLabel(l1); |
| mv.visitInsn(ICONST_0); |
| mv.visitInsn(IRETURN); |
| mv.visitMaxs(0, 0); |
| mv.visitEnd(); |
| } |
| |
| private void sameLocals1stackItemFrame2(final ClassWriter cw) { |
| MethodVisitor mv = cw.visitMethod(ACC_PUBLIC, |
| "sameLocals1stackItemFrame2", "()V", null, null); |
| mv.visitCode(); |
| Label l0 = new Label(); |
| Label l1 = new Label(); |
| Label l2 = new Label(); |
| mv.visitTryCatchBlock(l0, l1, l2, "java/lang/Exception"); |
| Label l3 = new Label(); |
| mv.visitTryCatchBlock(l0, l1, l3, null); |
| Label l4 = new Label(); |
| mv.visitTryCatchBlock(l2, l4, l3, null); |
| Label l5 = new Label(); |
| mv.visitTryCatchBlock(l3, l5, l3, null); |
| mv.visitLabel(l0); |
| mv.visitTypeInsn(NEW, "java/lang/Object"); |
| mv.visitInsn(DUP); |
| mv.visitMethodInsn(INVOKESPECIAL, "java/lang/Object", "<init>", "()V"); |
| mv.visitVarInsn(ASTORE, 1); |
| mv.visitLabel(l1); |
| Label l6 = new Label(); |
| mv.visitJumpInsn(GOTO, l6); |
| mv.visitFrame(F_SAME1, 0, null, 1, |
| new Object[] { "java/lang/Exception" }); |
| mv.visitLabel(l2); |
| mv.visitVarInsn(ASTORE, 2); |
| mv.visitLabel(l4); |
| mv.visitJumpInsn(GOTO, l6); |
| mv.visitFrame(F_SAME1, 0, null, 1, |
| new Object[] { "java/lang/Throwable" }); |
| mv.visitLabel(l3); |
| mv.visitVarInsn(ASTORE, 3); |
| mv.visitLabel(l5); |
| mv.visitVarInsn(ALOAD, 3); |
| mv.visitInsn(ATHROW); |
| mv.visitFrame(F_SAME, 0, null, 0, null); |
| mv.visitLabel(l6); |
| mv.visitInsn(RETURN); |
| mv.visitMaxs(0, 0); |
| mv.visitEnd(); |
| } |
| |
| private void sameLocals1stackItemFrameExtended(final ClassWriter cw) { |
| MethodVisitor mv = cw.visitMethod(ACC_PUBLIC, |
| "sameLocals1stackItemFrameExtended", "()I", null, null); |
| mv.visitCode(); |
| Label l0 = new Label(); |
| Label l1 = new Label(); |
| Label l2 = new Label(); |
| mv.visitTryCatchBlock(l0, l1, l2, null); |
| Label l3 = new Label(); |
| mv.visitTryCatchBlock(l2, l3, l2, null); |
| mv.visitLabel(l0); |
| mv.visitLdcInsn(new Long(11L)); |
| mv.visitVarInsn(LSTORE, 1); |
| mv.visitLdcInsn(new Long(11L)); |
| mv.visitVarInsn(LSTORE, 3); |
| mv.visitLdcInsn(new Long(11L)); |
| mv.visitVarInsn(LSTORE, 5); |
| mv.visitLdcInsn(new Long(11L)); |
| mv.visitVarInsn(LSTORE, 7); |
| mv.visitLdcInsn(new Long(11L)); |
| mv.visitVarInsn(LSTORE, 9); |
| mv.visitLdcInsn(new Long(11L)); |
| mv.visitVarInsn(LSTORE, 11); |
| mv.visitLdcInsn(new Long(11L)); |
| mv.visitVarInsn(LSTORE, 13); |
| mv.visitLdcInsn(new Long(11L)); |
| mv.visitVarInsn(LSTORE, 15); |
| mv.visitLdcInsn(new Long(11L)); |
| mv.visitVarInsn(LSTORE, 17); |
| mv.visitLdcInsn(new Long(11L)); |
| mv.visitVarInsn(LSTORE, 19); |
| mv.visitLdcInsn(new Long(11L)); |
| mv.visitVarInsn(LSTORE, 21); |
| mv.visitLdcInsn(new Long(11L)); |
| mv.visitVarInsn(LSTORE, 23); |
| mv.visitLdcInsn(new Long(11L)); |
| mv.visitVarInsn(LSTORE, 25); |
| mv.visitLabel(l1); |
| mv.visitInsn(ICONST_0); |
| mv.visitInsn(IRETURN); |
| mv.visitFrame(F_SAME1, 0, null, 1, |
| new Object[] { "java/lang/Throwable" }); |
| mv.visitLabel(l2); |
| mv.visitVarInsn(ASTORE, 27); |
| mv.visitLabel(l3); |
| mv.visitInsn(ICONST_0); |
| mv.visitInsn(IRETURN); |
| mv.visitMaxs(0, 0); |
| mv.visitEnd(); |
| } |
| |
| private void sameFrameExtended(final ClassWriter cw) { |
| MethodVisitor mv = cw.visitMethod(ACC_PUBLIC, "sameFrameExtended", |
| "(Z)V", null, null); |
| mv.visitCode(); |
| mv.visitFrame(F_SAME, 0, null, 0, null); |
| Label l0 = new Label(); |
| mv.visitLabel(l0); |
| mv.visitLdcInsn(new Long(11L)); |
| mv.visitVarInsn(LSTORE, 2); |
| mv.visitLdcInsn(new Long(11L)); |
| mv.visitVarInsn(LSTORE, 4); |
| mv.visitLdcInsn(new Long(11L)); |
| mv.visitVarInsn(LSTORE, 6); |
| mv.visitLdcInsn(new Long(11L)); |
| mv.visitVarInsn(LSTORE, 8); |
| mv.visitLdcInsn(new Long(11L)); |
| mv.visitVarInsn(LSTORE, 10); |
| mv.visitLdcInsn(new Long(11L)); |
| mv.visitVarInsn(LSTORE, 12); |
| mv.visitLdcInsn(new Long(11L)); |
| mv.visitVarInsn(LSTORE, 14); |
| mv.visitLdcInsn(new Long(11L)); |
| mv.visitVarInsn(LSTORE, 16); |
| mv.visitLdcInsn(new Long(11L)); |
| mv.visitVarInsn(LSTORE, 18); |
| mv.visitLdcInsn(new Long(11L)); |
| mv.visitVarInsn(LSTORE, 20); |
| mv.visitLdcInsn(new Long(11L)); |
| mv.visitVarInsn(LSTORE, 22); |
| mv.visitLdcInsn(new Long(11L)); |
| mv.visitVarInsn(LSTORE, 24); |
| mv.visitLdcInsn(new Long(11L)); |
| mv.visitVarInsn(LSTORE, 26); |
| mv.visitVarInsn(ILOAD, 1); |
| Label l1 = new Label(); |
| mv.visitJumpInsn(IFEQ, l1); |
| mv.visitInsn(RETURN); |
| mv.visitFrame(F_SAME, 0, null, 0, null); |
| mv.visitLabel(l1); |
| mv.visitJumpInsn(GOTO, l0); |
| mv.visitMaxs(0, 0); |
| mv.visitEnd(); |
| } |
| |
| private void deadCode(final ClassWriter cw) { |
| MethodVisitor mv = cw.visitMethod(ACC_PUBLIC, "deadCode", "(Z)V", null, |
| null); |
| mv.visitCode(); |
| Label l0 = new Label(); |
| Label l1 = new Label(); |
| Label l2 = new Label(); |
| Label l3 = new Label(); |
| mv.visitTryCatchBlock(l0, l1, l1, "java/lang/Exception"); |
| mv.visitTryCatchBlock(l2, l3, l3, "java/lang/Exception"); |
| mv.visitJumpInsn(GOTO, l2); |
| mv.visitFrame(F_SAME, 0, null, 0, null); |
| mv.visitLabel(l0); |
| mv.visitInsn(RETURN); |
| mv.visitFrame(F_SAME1, 0, null, 1, |
| new Object[] { "java/lang/Exception" }); |
| mv.visitLabel(l1); |
| mv.visitVarInsn(ASTORE, 2); |
| mv.visitInsn(RETURN); |
| mv.visitFrame(F_FULL, 0, new Object[] { "pkg/FrameTable", INTEGER }, 0, |
| null); |
| mv.visitLabel(l2); |
| mv.visitInsn(RETURN); |
| mv.visitFrame(F_SAME1, 0, null, 1, |
| new Object[] { "java/lang/Exception" }); |
| mv.visitLabel(l3); |
| mv.visitVarInsn(ASTORE, 2); |
| mv.visitInsn(RETURN); |
| mv.visitMaxs(0, 0); |
| mv.visitEnd(); |
| } |
| |
| /** |
| * Ad hoc class adapter used to rename the FrameTable class and to change |
| * its class version. |
| * |
| * @author Eric Bruneton |
| */ |
| static class RenameAdapter extends ClassVisitor { |
| |
| public RenameAdapter(final ClassVisitor cv) { |
| super(Opcodes.ASM4, cv); |
| } |
| |
| @Override |
| public void visit(final int version, final int access, |
| final String name, final String signature, |
| final String superName, final String[] interfaces) { |
| super.visit(V1_5, access, "pkg/FrameMap", signature, superName, |
| interfaces); |
| } |
| |
| @Override |
| public MethodVisitor visitMethod(final int access, final String name, |
| final String desc, final String signature, |
| final String[] exceptions) { |
| return new MethodVisitor(Opcodes.ASM4, super.visitMethod(access, |
| name, desc, signature, exceptions)) { |
| @Override |
| public void visitFrame(final int type, final int nLocal, |
| final Object[] local, final int nStack, |
| final Object[] stack) { |
| Object[] clocal = new Object[local.length]; |
| for (int i = 0; i < clocal.length; ++i) { |
| clocal[i] = local[i]; |
| if ("pkg/FrameTable".equals(clocal[i])) { |
| clocal[i] = "pkg/FrameMap"; |
| } |
| } |
| Object[] cstack = new Object[stack.length]; |
| for (int i = 0; i < cstack.length; ++i) { |
| cstack[i] = stack[i]; |
| if ("pkg/FrameTable".equals(cstack[i])) { |
| cstack[i] = "pkg/FrameMap"; |
| } |
| } |
| super.visitFrame(type, nLocal, clocal, nStack, cstack); |
| } |
| |
| @Override |
| public void visitTypeInsn(final int opcode, final String desc) { |
| if (desc.equals("pkg/FrameTable")) { |
| super.visitTypeInsn(opcode, "pkg/FrameMap"); |
| } else { |
| super.visitTypeInsn(opcode, desc); |
| } |
| } |
| |
| @Override |
| public void visitMethodInsn(final int opcode, |
| final String owner, final String name, final String desc) { |
| if (owner.equals("pkg/FrameTable")) { |
| super.visitMethodInsn(opcode, "pkg/FrameMap", name, |
| desc); |
| } else { |
| super.visitMethodInsn(opcode, owner, name, desc); |
| } |
| } |
| }; |
| } |
| } |
| } |
