Example usage for org.objectweb.asm Opcodes RETURN

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Prototype

int RETURN

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Usage

From source file:de.dynamicfiles.projects.gradle.plugins.javafx.tasks.internal.MonkeyPatcher.java

License:Apache License

private static void doMonkeyPatchFileHandleLeak(ClassReader classReader, ClassWriter classWriter) {
    classReader.accept(new ClassVisitor(Opcodes.ASM5, classWriter) {
        @Override/*from w  w w  .java  2s . c o  m*/
        public MethodVisitor visitMethod(int access, String name, String desc, String signature,
                String[] exceptions) {
            if (!(name.equals(METHOD_TO_MONKEY_PATCH) && desc.equals(METHOD_SIGNATURE_TO_MONKEY_PATCH))) {
                return super.visitMethod(access, name, desc, signature, exceptions);
            }
            // helpful source: http://web.cs.ucla.edu/~msb/cs239-tutorial/
            // "We will do this using the Adapter Pattern. Adapters wrap an object, overriding some of its methods, and delegating to the others."
            // ugly adapter-pattern ... took me more time than I really can tell here <.<
            return getMonkeyPatchedFileHandleLeakMethodVisitor(access, name, desc, signature, exceptions);
        }

        private MethodVisitor getMonkeyPatchedFileHandleLeakMethodVisitor(int access, String name, String desc,
                String signature, String[] exceptions) {
            return new MethodVisitor(Opcodes.ASM5,
                    super.visitMethod(access, name, desc, signature, exceptions)) {

                /*
                 TODO improve detection of lambda-positions, numbers might vary on different compile-versions
                 */
                @Override
                public void visitCode() {
                    // This mostly got generated from ASM itself, except some adjustments for lambda-IDs and removed "visitMaxs()"-call
                    String javalangThrowable = "java/lang/Throwable";
                    String javaioFile = "java/io/File";
                    String javalangString = "java/lang/String";

                    Label l0 = new Label();
                    Label l1 = new Label();
                    Label l2 = new Label();
                    mv.visitTryCatchBlock(l0, l1, l2, javalangThrowable);
                    Label l3 = new Label();
                    Label l4 = new Label();
                    Label l5 = new Label();
                    mv.visitTryCatchBlock(l3, l4, l5, javalangThrowable);
                    Label l6 = new Label();
                    mv.visitTryCatchBlock(l3, l4, l6, null);
                    Label l7 = new Label();
                    Label l8 = new Label();
                    Label l9 = new Label();
                    mv.visitTryCatchBlock(l7, l8, l9, javalangThrowable);
                    Label l10 = new Label();
                    mv.visitTryCatchBlock(l5, l10, l6, null);
                    mv.visitInsn(Opcodes.ACONST_NULL);
                    mv.visitVarInsn(Opcodes.ASTORE, 3);
                    mv.visitVarInsn(Opcodes.ALOAD, 2);
                    Label l11 = new Label();
                    mv.visitJumpInsn(Opcodes.IFNULL, l11);
                    mv.visitVarInsn(Opcodes.ALOAD, 2);
                    mv.visitMethodInsn(Opcodes.INVOKEVIRTUAL, javaioFile, "isDirectory", "()Z", false);
                    Label l12 = new Label();
                    mv.visitJumpInsn(Opcodes.IFNE, l12);
                    mv.visitLabel(l11);
                    mv.visitFrame(Opcodes.F_APPEND, 1, new Object[] { javalangString }, 0, null);
                    mv.visitTypeInsn(Opcodes.NEW, javaioFile);
                    mv.visitInsn(Opcodes.DUP);
                    mv.visitLdcInsn("java.home");
                    mv.visitMethodInsn(Opcodes.INVOKESTATIC, "java/lang/System", "getProperty",
                            "(Ljava/lang/String;)Ljava/lang/String;", false);
                    mv.visitMethodInsn(Opcodes.INVOKESPECIAL, javaioFile, "<init>", "(Ljava/lang/String;)V",
                            false);
                    mv.visitVarInsn(Opcodes.ASTORE, 2);
                    mv.visitLabel(l12);
                    mv.visitFrame(Opcodes.F_SAME, 0, null, 0, null);
                    mv.visitFieldInsn(Opcodes.GETSTATIC, "com/oracle/tools/packager/windows/WinAppBundler",
                            "VS_VERS", "[Ljava/lang/String;");
                    mv.visitVarInsn(Opcodes.ASTORE, 4);
                    mv.visitVarInsn(Opcodes.ALOAD, 4);
                    mv.visitInsn(Opcodes.ARRAYLENGTH);
                    mv.visitVarInsn(Opcodes.ISTORE, 5);
                    mv.visitInsn(Opcodes.ICONST_0);
                    mv.visitVarInsn(Opcodes.ISTORE, 6);
                    Label l13 = new Label();
                    mv.visitLabel(l13);
                    mv.visitFrame(Opcodes.F_APPEND, 3,
                            new Object[] { "[Ljava/lang/String;", Opcodes.INTEGER, Opcodes.INTEGER }, 0, null);
                    mv.visitVarInsn(Opcodes.ILOAD, 6);
                    mv.visitVarInsn(Opcodes.ILOAD, 5);
                    Label l14 = new Label();
                    mv.visitJumpInsn(Opcodes.IF_ICMPGE, l14);
                    mv.visitVarInsn(Opcodes.ALOAD, 4);
                    mv.visitVarInsn(Opcodes.ILOAD, 6);
                    mv.visitInsn(Opcodes.AALOAD);
                    mv.visitVarInsn(Opcodes.ASTORE, 7);
                    mv.visitVarInsn(Opcodes.ALOAD, 0);
                    mv.visitVarInsn(Opcodes.ALOAD, 1);
                    mv.visitVarInsn(Opcodes.ALOAD, 7);
                    mv.visitMethodInsn(Opcodes.INVOKESPECIAL, "com/oracle/tools/packager/windows/WinAppBundler",
                            "copyMSVCDLLs", "(Ljava/io/File;Ljava/lang/String;)Z", false);
                    Label l15 = new Label();
                    mv.visitJumpInsn(Opcodes.IFEQ, l15);
                    mv.visitVarInsn(Opcodes.ALOAD, 7);
                    mv.visitVarInsn(Opcodes.ASTORE, 3);
                    mv.visitJumpInsn(Opcodes.GOTO, l14);
                    mv.visitLabel(l15);
                    mv.visitFrame(Opcodes.F_SAME, 0, null, 0, null);
                    mv.visitIincInsn(6, 1);
                    mv.visitJumpInsn(Opcodes.GOTO, l13);
                    mv.visitLabel(l14);
                    mv.visitFrame(Opcodes.F_CHOP, 3, null, 0, null);
                    mv.visitVarInsn(Opcodes.ALOAD, 3);
                    Label l16 = new Label();
                    mv.visitJumpInsn(Opcodes.IFNONNULL, l16);
                    mv.visitTypeInsn(Opcodes.NEW, "java/lang/RuntimeException");
                    mv.visitInsn(Opcodes.DUP);
                    mv.visitLdcInsn("Not found MSVC dlls");
                    mv.visitMethodInsn(Opcodes.INVOKESPECIAL, "java/lang/RuntimeException", "<init>",
                            "(Ljava/lang/String;)V", false);
                    mv.visitInsn(Opcodes.ATHROW);
                    mv.visitLabel(l16);
                    mv.visitFrame(Opcodes.F_SAME, 0, null, 0, null);
                    mv.visitTypeInsn(Opcodes.NEW, "java/util/concurrent/atomic/AtomicReference");
                    mv.visitInsn(Opcodes.DUP);
                    mv.visitMethodInsn(Opcodes.INVOKESPECIAL, "java/util/concurrent/atomic/AtomicReference",
                            "<init>", "()V", false);
                    mv.visitVarInsn(Opcodes.ASTORE, 4);
                    mv.visitVarInsn(Opcodes.ALOAD, 3);
                    mv.visitVarInsn(Opcodes.ASTORE, 5);
                    mv.visitVarInsn(Opcodes.ALOAD, 2);
                    mv.visitMethodInsn(Opcodes.INVOKEVIRTUAL, javaioFile, "toPath", "()Ljava/nio/file/Path;",
                            false);
                    mv.visitLdcInsn("bin");
                    mv.visitMethodInsn(Opcodes.INVOKEINTERFACE, "java/nio/file/Path", "resolve",
                            "(Ljava/lang/String;)Ljava/nio/file/Path;", true);
                    mv.visitMethodInsn(Opcodes.INVOKESTATIC, "java/nio/file/Files", "list",
                            "(Ljava/nio/file/Path;)Ljava/util/stream/Stream;", false);
                    mv.visitVarInsn(Opcodes.ASTORE, 6);
                    mv.visitInsn(Opcodes.ACONST_NULL);
                    mv.visitVarInsn(Opcodes.ASTORE, 7);
                    mv.visitLabel(l3);
                    mv.visitVarInsn(Opcodes.ALOAD, 6);
                    mv.visitInvokeDynamicInsn("test", "()Ljava/util/function/Predicate;", new Handle(
                            Opcodes.H_INVOKESTATIC, "java/lang/invoke/LambdaMetafactory", "metafactory",
                            "(Ljava/lang/invoke/MethodHandles$Lookup;Ljava/lang/String;Ljava/lang/invoke/MethodType;Ljava/lang/invoke/MethodType;Ljava/lang/invoke/MethodHandle;Ljava/lang/invoke/MethodType;)Ljava/lang/invoke/CallSite;"),
                            new Object[] { Type.getType("(Ljava/lang/Object;)Z"),
                                    new Handle(Opcodes.H_INVOKESTATIC,
                                            "com/oracle/tools/packager/windows/WinAppBundler",
                                            "lambda$copyMSVCDLLs$261", "(Ljava/nio/file/Path;)Z"),
                                    Type.getType("(Ljava/nio/file/Path;)Z") }); // modified lambda-name
                    mv.visitMethodInsn(Opcodes.INVOKEINTERFACE, "java/util/stream/Stream", "filter",
                            "(Ljava/util/function/Predicate;)Ljava/util/stream/Stream;", true);
                    mv.visitVarInsn(Opcodes.ALOAD, 5);
                    mv.visitInvokeDynamicInsn("test", "(Ljava/lang/String;)Ljava/util/function/Predicate;",
                            new Handle(Opcodes.H_INVOKESTATIC, "java/lang/invoke/LambdaMetafactory",
                                    "metafactory",
                                    "(Ljava/lang/invoke/MethodHandles$Lookup;Ljava/lang/String;Ljava/lang/invoke/MethodType;Ljava/lang/invoke/MethodType;Ljava/lang/invoke/MethodHandle;Ljava/lang/invoke/MethodType;)Ljava/lang/invoke/CallSite;"),
                            new Object[] { Type.getType("(Ljava/lang/Object;)Z"), new Handle(
                                    Opcodes.H_INVOKESTATIC, "com/oracle/tools/packager/windows/WinAppBundler",
                                    "lambda$copyMSVCDLLs$262", "(Ljava/lang/String;Ljava/nio/file/Path;)Z"),
                                    Type.getType("(Ljava/nio/file/Path;)Z") }); // modified lambda-name
                    mv.visitMethodInsn(Opcodes.INVOKEINTERFACE, "java/util/stream/Stream", "filter",
                            "(Ljava/util/function/Predicate;)Ljava/util/stream/Stream;", true);
                    mv.visitVarInsn(Opcodes.ALOAD, 1);
                    mv.visitVarInsn(Opcodes.ALOAD, 4);
                    mv.visitInvokeDynamicInsn("accept",
                            "(Ljava/io/File;Ljava/util/concurrent/atomic/AtomicReference;)Ljava/util/function/Consumer;",
                            new Handle(Opcodes.H_INVOKESTATIC, "java/lang/invoke/LambdaMetafactory",
                                    "metafactory",
                                    "(Ljava/lang/invoke/MethodHandles$Lookup;Ljava/lang/String;Ljava/lang/invoke/MethodType;Ljava/lang/invoke/MethodType;Ljava/lang/invoke/MethodHandle;Ljava/lang/invoke/MethodType;)Ljava/lang/invoke/CallSite;"),
                            new Object[] { Type.getType("(Ljava/lang/Object;)V"), new Handle(
                                    Opcodes.H_INVOKESTATIC, "com/oracle/tools/packager/windows/WinAppBundler",
                                    "lambda$copyMSVCDLLs$263",
                                    "(Ljava/io/File;Ljava/util/concurrent/atomic/AtomicReference;Ljava/nio/file/Path;)V"),
                                    Type.getType("(Ljava/nio/file/Path;)V") }); // modified lambda-name
                    mv.visitMethodInsn(Opcodes.INVOKEINTERFACE, "java/util/stream/Stream", "forEach",
                            "(Ljava/util/function/Consumer;)V", true);
                    mv.visitLabel(l4);
                    mv.visitVarInsn(Opcodes.ALOAD, 6);
                    Label l17 = new Label();
                    mv.visitJumpInsn(Opcodes.IFNULL, l17);
                    mv.visitVarInsn(Opcodes.ALOAD, 7);
                    Label l18 = new Label();
                    mv.visitJumpInsn(Opcodes.IFNULL, l18);
                    mv.visitLabel(l0);
                    mv.visitVarInsn(Opcodes.ALOAD, 6);
                    mv.visitMethodInsn(Opcodes.INVOKEINTERFACE, "java/util/stream/Stream", "close", "()V",
                            true);
                    mv.visitLabel(l1);
                    mv.visitJumpInsn(Opcodes.GOTO, l17);
                    mv.visitLabel(l2);
                    mv.visitFrame(Opcodes.F_FULL, 8,
                            new Object[] { "com/oracle/tools/packager/windows/WinAppBundler", javaioFile,
                                    javaioFile, javalangString, "java/util/concurrent/atomic/AtomicReference",
                                    javalangString, "java/util/stream/Stream", javalangThrowable },
                            1, new Object[] { javalangThrowable });
                    mv.visitVarInsn(Opcodes.ASTORE, 8);
                    mv.visitVarInsn(Opcodes.ALOAD, 7);
                    mv.visitVarInsn(Opcodes.ALOAD, 8);
                    mv.visitMethodInsn(Opcodes.INVOKEVIRTUAL, javalangThrowable, "addSuppressed",
                            "(Ljava/lang/Throwable;)V", false);
                    mv.visitJumpInsn(Opcodes.GOTO, l17);
                    mv.visitLabel(l18);
                    mv.visitFrame(Opcodes.F_SAME, 0, null, 0, null);
                    mv.visitVarInsn(Opcodes.ALOAD, 6);
                    mv.visitMethodInsn(Opcodes.INVOKEINTERFACE, "java/util/stream/Stream", "close", "()V",
                            true);
                    mv.visitJumpInsn(Opcodes.GOTO, l17);
                    mv.visitLabel(l5);
                    mv.visitFrame(Opcodes.F_SAME1, 0, null, 1, new Object[] { javalangThrowable });
                    mv.visitVarInsn(Opcodes.ASTORE, 8);
                    mv.visitVarInsn(Opcodes.ALOAD, 8);
                    mv.visitVarInsn(Opcodes.ASTORE, 7);
                    mv.visitVarInsn(Opcodes.ALOAD, 8);
                    mv.visitInsn(Opcodes.ATHROW);
                    mv.visitLabel(l6);
                    mv.visitFrame(Opcodes.F_SAME1, 0, null, 1, new Object[] { javalangThrowable });
                    mv.visitVarInsn(Opcodes.ASTORE, 9);
                    mv.visitLabel(l10);
                    mv.visitVarInsn(Opcodes.ALOAD, 6);
                    Label l19 = new Label();
                    mv.visitJumpInsn(Opcodes.IFNULL, l19);
                    mv.visitVarInsn(Opcodes.ALOAD, 7);
                    Label l20 = new Label();
                    mv.visitJumpInsn(Opcodes.IFNULL, l20);
                    mv.visitLabel(l7);
                    mv.visitVarInsn(Opcodes.ALOAD, 6);
                    mv.visitMethodInsn(Opcodes.INVOKEINTERFACE, "java/util/stream/Stream", "close", "()V",
                            true);
                    mv.visitLabel(l8);
                    mv.visitJumpInsn(Opcodes.GOTO, l19);
                    mv.visitLabel(l9);
                    mv.visitFrame(Opcodes.F_FULL, 10,
                            new Object[] { "com/oracle/tools/packager/windows/WinAppBundler", javaioFile,
                                    javaioFile, javalangString, "java/util/concurrent/atomic/AtomicReference",
                                    javalangString, "java/util/stream/Stream", javalangThrowable, Opcodes.TOP,
                                    javalangThrowable },
                            1, new Object[] { javalangThrowable });
                    mv.visitVarInsn(Opcodes.ASTORE, 10);
                    mv.visitVarInsn(Opcodes.ALOAD, 7);
                    mv.visitVarInsn(Opcodes.ALOAD, 10);
                    mv.visitMethodInsn(Opcodes.INVOKEVIRTUAL, javalangThrowable, "addSuppressed",
                            "(Ljava/lang/Throwable;)V", false);
                    mv.visitJumpInsn(Opcodes.GOTO, l19);
                    mv.visitLabel(l20);
                    mv.visitFrame(Opcodes.F_SAME, 0, null, 0, null);
                    mv.visitVarInsn(Opcodes.ALOAD, 6);
                    mv.visitMethodInsn(Opcodes.INVOKEINTERFACE, "java/util/stream/Stream", "close", "()V",
                            true);
                    mv.visitLabel(l19);
                    mv.visitFrame(Opcodes.F_SAME, 0, null, 0, null);
                    mv.visitVarInsn(Opcodes.ALOAD, 9);
                    mv.visitInsn(Opcodes.ATHROW);
                    mv.visitLabel(l17);
                    mv.visitFrame(Opcodes.F_FULL, 6,
                            new Object[] { "com/oracle/tools/packager/windows/WinAppBundler", javaioFile,
                                    javaioFile, javalangString, "java/util/concurrent/atomic/AtomicReference",
                                    javalangString },
                            0, new Object[] {});
                    mv.visitVarInsn(Opcodes.ALOAD, 4);
                    mv.visitMethodInsn(Opcodes.INVOKEVIRTUAL, "java/util/concurrent/atomic/AtomicReference",
                            "get", "()Ljava/lang/Object;", false);
                    mv.visitTypeInsn(Opcodes.CHECKCAST, "java/io/IOException");
                    mv.visitVarInsn(Opcodes.ASTORE, 6);
                    mv.visitVarInsn(Opcodes.ALOAD, 6);
                    Label l21 = new Label();
                    mv.visitJumpInsn(Opcodes.IFNULL, l21);
                    mv.visitVarInsn(Opcodes.ALOAD, 6);
                    mv.visitInsn(Opcodes.ATHROW);
                    mv.visitLabel(l21);
                    mv.visitFrame(Opcodes.F_APPEND, 1, new Object[] { "java/io/IOException" }, 0, null);
                    mv.visitInsn(Opcodes.RETURN);
                }

            };
        }

    }, ClassReader.EXPAND_FRAMES); // ClassReader.EXPAND_FRAMES required for Java 8
}

From source file:de.javanarior.vo.generator.ByteCodeGenerator.java

License:Apache License

/**
 * Generate a implementation of a value object.
 *
 * @param valueType//from   w  w w. j av  a 2  s  .  co m
 *            - value object type
 * @param technicalType
 *            - to which the value object is mapped
 * @param wrapperClass
 *            - abstract wrapper class, correspond to the technical type
 * @return class name and byte code in a container
 */
/* CHECKSTYLE:OFF */
public static ByteCodeContainer generate(Class<?> valueType, Class<? extends Comparable<?>> technicalType,
        @SuppressWarnings("rawtypes") Class<? extends AbstractValue> wrapperClass) {
    /* CHECKSTYLE:ON */

    if (!isInterface(valueType)) {
        throw new IllegalArgumentException("Could not generate implementation for class " + valueType.getName()
                + ". Please provide interface");
    }

    ClassWriter classWriter = new ClassWriter(0);
    MethodVisitor methodVisitor;

    classWriter.visit(Opcodes.V1_7, Opcodes.ACC_PUBLIC + Opcodes.ACC_SUPER, implementationClassName(valueType),
            "L" + parentClassName(wrapperClass) + "<" + addTypeDiscriptor(valueType) + ">;"
                    + addTypeDiscriptor(valueType),
            parentClassName(wrapperClass), implementedInterfaces(valueType));

    methodVisitor = classWriter.visitMethod(Opcodes.ACC_PUBLIC, CONSTRUCTOR, methodDescriptor(technicalType),
            null, null);
    methodVisitor.visitCode();
    Label label0 = new Label();
    methodVisitor.visitLabel(label0);
    /* CHECKSTYLE:OFF */
    methodVisitor.visitLineNumber(8, label0);
    /* CHECKSTYLE:ON */
    methodVisitor.visitVarInsn(Opcodes.ALOAD, 0);
    methodVisitor.visitVarInsn(getILOADOpCode(technicalType), 1);
    methodVisitor.visitMethodInsn(Opcodes.INVOKESPECIAL, parentClassName(wrapperClass), CONSTRUCTOR,
            methodDescriptor(technicalType), false);
    Label label1 = new Label();
    methodVisitor.visitLabel(label1);
    /* CHECKSTYLE:OFF */
    methodVisitor.visitLineNumber(9, label1);
    /* CHECKSTYLE:ON */
    methodVisitor.visitInsn(Opcodes.RETURN);
    Label label2 = new Label();
    methodVisitor.visitLabel(label2);
    methodVisitor.visitLocalVariable("this", addTypeSignature(implementationClassName(valueType)), null, label0,
            label2, 0);
    methodVisitor.visitLocalVariable("value", getType(technicalType), null, label0, label2, 1);
    int stackSize = getStackSize(Type.getDescriptor(technicalType));
    methodVisitor.visitMaxs(stackSize, stackSize);
    methodVisitor.visitEnd();
    classWriter.visitEnd();

    return new ByteCodeContainer(binaryClassName(valueType), classWriter.toByteArray());
}

From source file:de.sanandrew.core.manpack.transformer.TransformELBAttackingPlayer.java

License:Creative Commons License

private static byte[] transformAccessors(byte[] bytes) {
    ClassNode clazz = ASMHelper.createClassNode(bytes);

    int complete = 0;
    for (MethodNode method : clazz.methods) {
        switch (method.name) {
        case "getELAttackingPlayer": {
            method.instructions.clear();
            method.visitCode();/*from ww  w  .  j  a va  2  s .  com*/
            Label l0 = new Label();
            method.visitLabel(l0);
            method.visitVarInsn(Opcodes.ALOAD, 0);
            method.visitMethodInsn(Opcodes.INVOKEVIRTUAL, "net/minecraft/entity/EntityLivingBase",
                    "_SAP_getAttackingPlayer", "()Lnet/minecraft/entity/player/EntityPlayer;", false);
            method.visitInsn(Opcodes.ARETURN);
            Label l1 = new Label();
            method.visitLabel(l1);
            method.visitLocalVariable("entity", "Lnet/minecraft/entity/EntityLivingBase;", null, l0, l1, 0);
            method.visitMaxs(0, 0);
            method.visitEnd();
            complete++;
            continue;
        }
        case "setELAttackingPlayer": {
            method.instructions.clear();
            method.visitCode();
            Label l0 = new Label();
            method.visitLabel(l0);
            method.visitVarInsn(Opcodes.ALOAD, 1);
            method.visitVarInsn(Opcodes.ALOAD, 0);
            method.visitMethodInsn(Opcodes.INVOKEVIRTUAL, "net/minecraft/entity/EntityLivingBase",
                    "_SAP_setAttackingPlayer", "(Lnet/minecraft/entity/player/EntityPlayer;)V", false);
            Label l1 = new Label();
            method.visitLabel(l1);
            method.visitInsn(Opcodes.RETURN);
            Label l2 = new Label();
            method.visitLabel(l2);
            method.visitLocalVariable("player", "Lnet/minecraft/entity/player/EntityPlayer;", null, l0, l2, 0);
            method.visitLocalVariable("entity", "Lnet/minecraft/entity/EntityLivingBase;", null, l0, l2, 1);
            method.visitMaxs(0, 0);
            method.visitEnd();
            complete++;
            continue;
        }
        case "getELRecentlyHit": {
            method.instructions.clear();
            method.visitCode();
            Label l0 = new Label();
            method.visitLabel(l0);
            method.visitVarInsn(Opcodes.ALOAD, 0);
            method.visitMethodInsn(Opcodes.INVOKEVIRTUAL, "net/minecraft/entity/EntityLivingBase",
                    "_SAP_getRecentlyHit", "()I", false);
            method.visitInsn(Opcodes.IRETURN);
            Label l1 = new Label();
            method.visitLabel(l1);
            method.visitLocalVariable("entity", "Lnet/minecraft/entity/EntityLivingBase;", null, l0, l1, 0);
            method.visitMaxs(0, 0);
            method.visitEnd();
            complete++;
            continue;
        }
        case "setELRecentlyHit": {
            method.instructions.clear();
            method.visitCode();
            Label l0 = new Label();
            method.visitLabel(l0);
            method.visitVarInsn(Opcodes.ALOAD, 1);
            method.visitVarInsn(Opcodes.ILOAD, 0);
            method.visitMethodInsn(Opcodes.INVOKEVIRTUAL, "net/minecraft/entity/EntityLivingBase",
                    "_SAP_setRecentlyHit", "(I)V", false);
            Label l1 = new Label();
            method.visitLabel(l1);
            method.visitInsn(Opcodes.RETURN);
            Label l2 = new Label();
            method.visitLabel(l2);
            method.visitLocalVariable("hit", "I", null, l0, l2, 0);
            method.visitLocalVariable("entity", "Lnet/minecraft/entity/EntityLivingBase;", null, l0, l2, 1);
            method.visitMaxs(0, 0);
            method.visitEnd();
            complete++;
            continue;
        }
        }

        if (complete >= 4) {
            break;
        }
    }

    bytes = ASMHelper.createBytes(clazz, ClassWriter.COMPUTE_FRAMES | ClassWriter.COMPUTE_MAXS);

    return bytes;
}

From source file:de.sanandrew.core.manpack.transformer.TransformELBAttackingPlayer.java

License:Creative Commons License

private static byte[] transformAttackingPlayer(byte[] bytes) {
    ClassNode clazz = ASMHelper.createClassNode(bytes);

    /** ADD GETTER FOR ATTACKING PLAYER **/
    {/*from ww  w  .j  av a  2s  .  c  o m*/
        MethodNode method = new MethodNode(Opcodes.ACC_PUBLIC, "_SAP_getAttackingPlayer",
                "()Lnet/minecraft/entity/player/EntityPlayer;", null, null);
        method.visitCode();
        Label l0 = new Label();
        method.visitLabel(l0);
        method.visitVarInsn(Opcodes.ALOAD, 0);
        method.visitFieldInsn(Opcodes.GETFIELD, "net/minecraft/entity/EntityLivingBase",
                ASMNames.F_attackingPlayer, "Lnet/minecraft/entity/player/EntityPlayer;");
        method.visitInsn(Opcodes.ARETURN);
        Label l1 = new Label();
        method.visitLabel(l1);
        method.visitLocalVariable("this", "Lnet/minecraft/entity/EntityLivingBase;", null, l0, l1, 0);
        method.visitMaxs(0, 0);
        method.visitEnd();
        clazz.methods.add(method);
    }

    /** ADD SETTER FOR ATTACKING PLAYER **/
    {
        MethodNode method = new MethodNode(Opcodes.ACC_PUBLIC, "_SAP_setAttackingPlayer",
                "(Lnet/minecraft/entity/player/EntityPlayer;)V", null, null);
        method.visitCode();
        Label l0 = new Label();
        method.visitLabel(l0);
        method.visitVarInsn(Opcodes.ALOAD, 0);
        method.visitVarInsn(Opcodes.ALOAD, 1);
        method.visitFieldInsn(Opcodes.PUTFIELD, "net/minecraft/entity/EntityLivingBase",
                ASMNames.F_attackingPlayer, "Lnet/minecraft/entity/player/EntityPlayer;");
        Label l1 = new Label();
        method.visitLabel(l1);
        method.visitInsn(Opcodes.RETURN);
        Label l2 = new Label();
        method.visitLabel(l2);
        method.visitLocalVariable("this", "Lnet/minecraft/entity/EntityLivingBase;", null, l0, l2, 0);
        method.visitLocalVariable("player", "Lnet/minecraft/entity/player/EntityPlayer;", null, l0, l2, 1);
        method.visitMaxs(0, 0);
        method.visitEnd();
        clazz.methods.add(method);
    }

    /** ADD GETTER FOR RECENTLY HIT **/
    {
        MethodNode method = new MethodNode(Opcodes.ACC_PUBLIC, "_SAP_getRecentlyHit", "()I", null, null);
        method.visitCode();
        Label l0 = new Label();
        method.visitLabel(l0);
        method.visitVarInsn(Opcodes.ALOAD, 0);
        method.visitFieldInsn(Opcodes.GETFIELD, "net/minecraft/entity/EntityLivingBase", ASMNames.F_recentlyHit,
                "I");
        method.visitInsn(Opcodes.IRETURN);
        Label l1 = new Label();
        method.visitLabel(l1);
        method.visitLocalVariable("this", "Lnet/minecraft/entity/EntityLivingBase;", null, l0, l1, 0);
        method.visitMaxs(0, 0);
        method.visitEnd();
        clazz.methods.add(method);
    }

    /** ADD SETTER FOR RECENTLY HIT **/
    {
        MethodNode method = new MethodNode(Opcodes.ACC_PUBLIC, "_SAP_setRecentlyHit", "(I)V", null, null);
        method.visitCode();
        Label l0 = new Label();
        method.visitLabel(l0);
        method.visitVarInsn(Opcodes.ALOAD, 0);
        method.visitVarInsn(Opcodes.ILOAD, 1);
        method.visitFieldInsn(Opcodes.PUTFIELD, "net/minecraft/entity/EntityLivingBase", ASMNames.F_recentlyHit,
                "I");
        Label l1 = new Label();
        method.visitLabel(l1);
        method.visitInsn(Opcodes.RETURN);
        Label l2 = new Label();
        method.visitLabel(l2);
        method.visitLocalVariable("this", "Lnet/minecraft/entity/EntityLivingBase;", null, l0, l2, 0);
        method.visitLocalVariable("hit", "I", null, l0, l2, 1);
        method.visitMaxs(0, 0);
        method.visitEnd();
        clazz.methods.add(method);
    }

    bytes = ASMHelper.createBytes(clazz, /*ClassWriter.COMPUTE_FRAMES |*/ ClassWriter.COMPUTE_MAXS);

    return bytes;
}

From source file:de.sanandrew.core.manpack.transformer.TransformHorseArmor.java

License:Creative Commons License

private static MethodNode injectMethodSetCustomArmorItem() {
    MethodNode method = ASMHelper.getMethodNode(Opcodes.ACC_PRIVATE, ASMNames.MD_SAP_SET_CUSTOM_ARMOR_ITEM);
    method.visitCode();//from  w  w  w.  j  a  v  a  2  s  . c  o m
    Label l0 = new Label();
    method.visitLabel(l0);
    method.visitVarInsn(Opcodes.ALOAD, 1);
    Label l1 = new Label();
    method.visitJumpInsn(Opcodes.IFNONNULL, l1);
    method.visitTypeInsn(Opcodes.NEW, ASMNames.CL_ITEM_STACK);
    method.visitInsn(Opcodes.DUP);
    ASMHelper.visitFieldInsn(method, Opcodes.GETSTATIC, ASMNames.FD_ITEMS_IRON_SHOVEL);
    method.visitInsn(Opcodes.ICONST_0);
    ASMHelper.visitMethodInsn(method, Opcodes.INVOKESPECIAL, ASMNames.MD_ITEMSTACK_INIT, false);
    method.visitVarInsn(Opcodes.ASTORE, 1);
    method.visitLabel(l1);
    method.visitFrame(Opcodes.F_SAME, 0, null, 0, null);
    method.visitVarInsn(Opcodes.ALOAD, 0);
    ASMHelper.visitFieldInsn(method, Opcodes.GETFIELD, ASMNames.FD_HORSE_DATAWATCHER);
    method.visitIntInsn(Opcodes.BIPUSH, 23);
    method.visitVarInsn(Opcodes.ALOAD, 1);
    ASMHelper.visitMethodInsn(method, Opcodes.INVOKEVIRTUAL, ASMNames.MD_DATAWATCHER_UPDATE_OBJ, false);
    Label l3 = new Label();
    method.visitLabel(l3);
    method.visitInsn(Opcodes.RETURN);
    Label l4 = new Label();
    method.visitLabel(l4);
    method.visitLocalVariable("this", ASMNames.CL_T_ENTITY_HORSE, null, l0, l3, 0);
    method.visitLocalVariable("stack", ASMNames.CL_T_ITEM_STACK, null, l0, l3, 1);
    method.visitMaxs(5, 2);
    method.visitEnd();

    return method;
}

From source file:de.sanandrew.core.manpack.transformer.TransformHorseArmor.java

License:Creative Commons License

private static void transformArmorTexture(MethodNode method) {
    InsnList needle = new InsnList();
    needle.add(new VarInsnNode(Opcodes.ALOAD, 0));
    needle.add(ASMHelper.getMethodInsnNode(Opcodes.INVOKEVIRTUAL, ASMNames.MD_HORSE_FUNC110241CB, false));
    needle.add(new VarInsnNode(Opcodes.ISTORE, 3));

    AbstractInsnNode node = ASMHelper.findLastNodeFromNeedle(method.instructions, needle);

    InsnList newInstr = new InsnList();
    LabelNode l17 = new LabelNode();
    newInstr.add(l17);//w  w  w. j a  v a  2s . c o  m
    newInstr.add(new VarInsnNode(Opcodes.ALOAD, 0));
    newInstr.add(
            ASMHelper.getMethodInsnNode(Opcodes.INVOKESPECIAL, ASMNames.MD_SAP_GET_CUSTOM_ARMOR_ITEM, false));
    newInstr.add(new VarInsnNode(Opcodes.ASTORE, 4));
    LabelNode l18 = new LabelNode();
    newInstr.add(l18);
    newInstr.add(new VarInsnNode(Opcodes.ALOAD, 4));
    newInstr.add(ASMHelper.getMethodInsnNode(Opcodes.INVOKEVIRTUAL, ASMNames.MD_ITEMSTACK_GET_ITEM, false));
    newInstr.add(new TypeInsnNode(Opcodes.INSTANCEOF, ASMNames.CL_ITEM_HORSE_ARMOR));
    LabelNode l19 = new LabelNode();
    newInstr.add(new JumpInsnNode(Opcodes.IFEQ, l19));
    LabelNode l20 = new LabelNode();
    newInstr.add(l20);
    newInstr.add(new VarInsnNode(Opcodes.ALOAD, 0));
    newInstr.add(ASMHelper.getFieldInsnNode(Opcodes.GETFIELD, ASMNames.FD_HORSE_FIELD110280BR));
    newInstr.add(new InsnNode(Opcodes.ICONST_2));
    newInstr.add(new VarInsnNode(Opcodes.ALOAD, 4));
    newInstr.add(ASMHelper.getMethodInsnNode(Opcodes.INVOKEVIRTUAL, ASMNames.MD_ITEMSTACK_GET_ITEM, false));
    newInstr.add(new TypeInsnNode(Opcodes.CHECKCAST, ASMNames.CL_ITEM_HORSE_ARMOR));
    newInstr.add(new VarInsnNode(Opcodes.ALOAD, 0));
    newInstr.add(new VarInsnNode(Opcodes.ALOAD, 4));
    newInstr.add(ASMHelper.getMethodInsnNode(Opcodes.INVOKEVIRTUAL, ASMNames.MD_SAP_GET_ARMOR_TEXTURE, false));
    newInstr.add(new InsnNode(Opcodes.AASTORE));
    LabelNode l21 = new LabelNode();
    newInstr.add(l21);
    newInstr.add(new VarInsnNode(Opcodes.ALOAD, 0));
    newInstr.add(new TypeInsnNode(Opcodes.NEW, ASMNames.CL_STRING_BUILDER));
    newInstr.add(new InsnNode(Opcodes.DUP));
    newInstr.add(new VarInsnNode(Opcodes.ALOAD, 0));
    newInstr.add(ASMHelper.getFieldInsnNode(Opcodes.GETFIELD, ASMNames.FD_HORSE_FIELD110286BQ));
    newInstr.add(ASMHelper.getMethodInsnNode(Opcodes.INVOKESTATIC, ASMNames.MD_STRING_VALUE_OF, false));
    newInstr.add(ASMHelper.getMethodInsnNode(Opcodes.INVOKESPECIAL, ASMNames.MD_STRINGBUILDER_INIT, false));
    newInstr.add(new LdcInsnNode("cst-"));
    newInstr.add(ASMHelper.getMethodInsnNode(Opcodes.INVOKEVIRTUAL, ASMNames.MD_STRINGBUILDER_APPEND, false));
    newInstr.add(new VarInsnNode(Opcodes.ALOAD, 4));
    newInstr.add(
            ASMHelper.getMethodInsnNode(Opcodes.INVOKEVIRTUAL, ASMNames.MD_ITEMSTACK_GET_UNLOC_NAME, false));
    newInstr.add(ASMHelper.getMethodInsnNode(Opcodes.INVOKEVIRTUAL, ASMNames.MD_STRINGBUILDER_APPEND, false));
    newInstr.add(
            ASMHelper.getMethodInsnNode(Opcodes.INVOKEVIRTUAL, ASMNames.MD_STRINGBUILDER_TO_STRING, false));
    newInstr.add(ASMHelper.getFieldInsnNode(Opcodes.PUTFIELD, ASMNames.FD_HORSE_FIELD110286BQ));
    newInstr.add(new InsnNode(Opcodes.RETURN));
    newInstr.add(l19);

    method.instructions.insert(node, newInstr);
}

From source file:de.tuberlin.uebb.jbop.access.ConstructorBuilder.java

License:Open Source License

/**
 * Creates a constructor with all fields of <code>object</code> as parameters
 * and adds it to the method-List of <code>node</code>.
 * A List with all Values (in order of the parameters) is returned.
 * //w  w w  .jav  a  2 s. co  m
 * If such a constructor already exists, only the parameters are returned,
 * no change is made to to the classNode.
 * 
 * @param node
 *          the ClassNode
 * @param object
 *          the input Object
 * @return the value list
 * @throws JBOPClassException
 *           if the Constructor couldn't be created.
 */
public static List<Object> createConstructor(final ClassNode node, final Object object)
        throws JBOPClassException {
    final Class<? extends Object> clazz = object.getClass();
    int param = 1;
    final StringBuilder desc = new StringBuilder("(");
    final MethodNode constructor = createMethodNode(node);
    final List<Object> params = new ArrayList<>();
    for (final FieldNode field : node.fields) {
        final InsnList instructions = new InsnList();
        param = createInstructions(param, field, node, instructions);
        final Object value = getValue(clazz, field, object);
        params.add(value);
        constructor.instructions.add(instructions);
        desc.append(expand(field.desc, false));
    }
    constructor.instructions.add(new InsnNode(Opcodes.RETURN));
    desc.append(")V");
    constructor.desc = desc.toString();
    for (final MethodNode method : node.methods) {
        if ("<init>".equals(method.name)) {
            if (constructor.desc.equals(method.desc)) {
                return params;
            }
        }
    }
    node.methods.add(constructor);
    return params;
}

From source file:de.tuberlin.uebb.jbop.optimizer.arithmetic.ArithmeticExpressionInterpreterTest.java

License:Open Source License

/**
 * Tests that arithmeticExpressionInterpreter() of the Testobject is working correctly
 * if nothing is todo (no arithmetic Expression occur in instructions).
 *//*w  w w .  java  2s  . co  m*/
@Test
public void testArithmeticExpressionInterpreterNoArithmeticInstructions() {
    // INIT
    builder.addInsn(new InsnNode(Opcodes.ICONST_1)).//
            addInsn(new VarInsnNode(Opcodes.ISTORE, 1)).//
            addInsn(new InsnNode(Opcodes.ICONST_2)).//
            addInsn(new VarInsnNode(Opcodes.ISTORE, 2)).//
            addInsn(new InsnNode(Opcodes.ICONST_3)).//
            addInsn(new VarInsnNode(Opcodes.ISTORE, 3)).//
            addInsn(new InsnNode(Opcodes.RETURN));
    // RUN
    final InsnList optimized = interpreter.optimize(builder.getMethod("testMethod").instructions,
            builder.getMethod("testMethod"));

    // ASSERT
    assertFalse(interpreter.isOptimized());
    assertEquals(7, optimized.size());
}

From source file:de.tuberlin.uebb.jbop.optimizer.arithmetic.ArithmeticExpressionInterpreterTest.java

License:Open Source License

/**
 * Tests that arithmeticExpressionInterpreter() of the Testobject is working correctly
 * if arithmetic Expression occur in instructions.
 *//*from ww w  .  j  ava  2s. co m*/
@Test
public void testArithmeticExpressionInterpreter() {
    // INIT
    builder.addInsn(new InsnNode(Opcodes.ICONST_1)).//
            addInsn(new InsnNode(Opcodes.ICONST_2)).//
            addInsn(new InsnNode(Opcodes.IADD)).//
            addInsn(new InsnNode(Opcodes.ICONST_1)).//
            addInsn(new InsnNode(Opcodes.ICONST_1)).//
            addInsn(new InsnNode(Opcodes.IADD)).//
            addInsn(new InsnNode(Opcodes.IADD)).//
            addInsn(new InsnNode(Opcodes.RETURN));

    // RUN STEP1
    final InsnList optimized = interpreter.optimize(builder.getMethod("testMethod").instructions,
            builder.getMethod("testMethod"));

    // ASSERT STEP 1
    assertTrue(interpreter.isOptimized());
    assertEquals(2, optimized.size());
    assertEquals(Opcodes.ICONST_5, optimized.getFirst().getOpcode());

    // RUN STEP 2
    final InsnList optimized2 = interpreter.optimize(builder.getMethod("testMethod").instructions,
            builder.getMethod("testMethod"));

    // ASSERT STEP 2
    assertFalse(interpreter.isOptimized());
    assertEquals(2, optimized2.size());
    assertEquals(Opcodes.ICONST_5, optimized2.getFirst().getOpcode());
}

From source file:de.tuberlin.uebb.jbop.optimizer.arithmetic.ArithmeticExpressionInterpreterTest.java

License:Open Source License

/**
 * Tests that arithmeticExpressionInterpreter() of the Testobject is working correctly
 * for logical or expressions./*from w  w  w .  j ava  2 s.c o m*/
 */
@Test
public void testArithmeticExpressionInterpreterLogicalIntOr() {
    // INIT
    builder.addInsn(new InsnNode(Opcodes.ICONST_1)).//
            addInsn(new InsnNode(Opcodes.ICONST_2)).//
            addInsn(new InsnNode(Opcodes.IOR)).//
            addInsn(new InsnNode(Opcodes.RETURN));

    final InsnList optimized = interpreter.optimize(builder.getMethod("testMethod").instructions,
            builder.getMethod("testMethod"));

    assertEquals(2, optimized.size());
    assertEquals(3, NodeHelper.getNumberValue(optimized.get(0)));
}