Example usage for org.objectweb.asm Opcodes INVOKEVIRTUAL

Introduction

In this page you can find the example usage for org.objectweb.asm Opcodes INVOKEVIRTUAL.

Prototype

int INVOKEVIRTUAL

To view the source code for org.objectweb.asm Opcodes INVOKEVIRTUAL.

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Usage

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 .co  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.sanandrew.core.manpack.transformer.TransformHorseArmor.java

License:Creative Commons License

private static void transformUpdateHorseSlots(MethodNode method) {
    InsnList needle = new InsnList();
    needle.add(new VarInsnNode(Opcodes.ALOAD, 0));
    needle.add(new VarInsnNode(Opcodes.ALOAD, 0));
    needle.add(ASMHelper.getFieldInsnNode(Opcodes.GETFIELD, ASMNames.FD_HORSE_CHEST));
    needle.add(new InsnNode(Opcodes.ICONST_1));

    AbstractInsnNode pointer = ASMHelper.findFirstNodeFromNeedle(method.instructions, needle);

    InsnList newInstr = new InsnList();
    newInstr.add(new VarInsnNode(Opcodes.ALOAD, 0));
    newInstr.add(new VarInsnNode(Opcodes.ALOAD, 0));
    newInstr.add(ASMHelper.getFieldInsnNode(Opcodes.GETFIELD, ASMNames.FD_HORSE_CHEST));
    newInstr.add(new InsnNode(Opcodes.ICONST_1));
    newInstr.add(ASMHelper.getMethodInsnNode(Opcodes.INVOKEVIRTUAL, ASMNames.MD_ANIMALCHEST_GET_STACK_IN_SLOT,
            false));//  ww w  .  j a  va 2 s.  c o  m
    newInstr.add(
            ASMHelper.getMethodInsnNode(Opcodes.INVOKESPECIAL, ASMNames.MD_SAP_SET_CUSTOM_ARMOR_ITEM, false));
    newInstr.add(new LabelNode());

    method.instructions.insertBefore(pointer, newInstr);
}

---

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

License:Creative Commons License

private static void transformEntityInit(MethodNode method) {
    InsnList needle = new InsnList();
    needle.add(new VarInsnNode(Opcodes.ALOAD, 0));
    needle.add(ASMHelper.getFieldInsnNode(Opcodes.GETFIELD, ASMNames.FD_HORSE_DATAWATCHER));
    needle.add(new IntInsnNode(Opcodes.BIPUSH, 22));
    needle.add(new InsnNode(Opcodes.ICONST_0));
    needle.add(ASMHelper.getMethodInsnNode(Opcodes.INVOKESTATIC, ASMNames.MD_INTEGER_VALUE_OF, false));
    needle.add(ASMHelper.getMethodInsnNode(Opcodes.INVOKEVIRTUAL, ASMNames.MD_DATAWATCHER_ADD_OBJECT, false));

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

    InsnList newInstr = new InsnList();
    newInstr.add(new LabelNode());
    newInstr.add(new VarInsnNode(Opcodes.ALOAD, 0));
    newInstr.add(ASMHelper.getFieldInsnNode(Opcodes.GETFIELD, ASMNames.FD_HORSE_DATAWATCHER));
    newInstr.add(new IntInsnNode(Opcodes.BIPUSH, 23));
    newInstr.add(new TypeInsnNode(Opcodes.NEW, ASMNames.CL_ITEM_STACK));
    newInstr.add(new InsnNode(Opcodes.DUP));
    newInstr.add(ASMHelper.getFieldInsnNode(Opcodes.GETSTATIC, ASMNames.FD_ITEMS_IRON_SHOVEL));
    newInstr.add(new InsnNode(Opcodes.ICONST_0));
    newInstr.add(ASMHelper.getMethodInsnNode(Opcodes.INVOKESPECIAL, ASMNames.MD_ITEMSTACK_INIT, false));
    newInstr.add(ASMHelper.getMethodInsnNode(Opcodes.INVOKEVIRTUAL, ASMNames.MD_DATAWATCHER_ADD_OBJECT, false));

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

---

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

License:Creative Commons License

private static void transformInteract(MethodNode method) {

    InsnList needle = new InsnList();
    needle.add(ASMHelper.getFieldInsnNode(Opcodes.GETSTATIC, ASMNames.FD_ITEMS_DIAMOND_HORSE_ARMOR));
    needle.add(new JumpInsnNode(Opcodes.IF_ACMPNE, new LabelNode()));
    needle.add(new LabelNode());
    needle.add(new LineNumberNode(-1, new LabelNode()));
    needle.add(new InsnNode(Opcodes.ICONST_3));
    needle.add(new VarInsnNode(Opcodes.ISTORE, 4));
    needle.add(new LabelNode());
    needle.add(new LineNumberNode(-1, new LabelNode()));
    needle.add(new FrameNode(Opcodes.F_SAME, 0, null, 0, null));

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

    InsnList newInstr = new InsnList();
    newInstr.add(new LabelNode());
    newInstr.add(new VarInsnNode(Opcodes.ALOAD, 2));
    newInstr.add(ASMHelper.getMethodInsnNode(Opcodes.INVOKEVIRTUAL, ASMNames.MD_ITEMSTACK_GET_ITEM, false));
    newInstr.add(new TypeInsnNode(Opcodes.INSTANCEOF, ASMNames.CL_ITEM_HORSE_ARMOR));
    LabelNode l8 = new LabelNode();
    newInstr.add(new JumpInsnNode(Opcodes.IFEQ, l8));
    newInstr.add(new LabelNode());
    newInstr.add(new InsnNode(Opcodes.ICONST_4));
    newInstr.add(new VarInsnNode(Opcodes.ISTORE, 4));
    newInstr.add(l8);/*from   www  . j  a v  a2  s .  com*/
    newInstr.add(new FrameNode(Opcodes.F_SAME, 0, null, 0, null));

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

---

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

License:Creative Commons License

/**
 * Transforms the EntityPlayer.class by hooking into the updateRidden method and adding a call to _SAP_canDismountOnInput
 * in order for the ridden entity to control whether or not the rider can dismount via sneaking.
 *
 * @param bytes     the class bytes to be transformed
 * @return the transformed class bytes/* w  w w  . j  av a  2s.c  o  m*/
 */
private static byte[] transformPlayer(byte[] bytes) {
    ClassNode clazz = ASMHelper.createClassNode(bytes);
    MethodNode method = ASMHelper.findMethod(clazz, ASMNames.MD_PLAYER_UPDATE_RIDDEN);

    InsnList needle = new InsnList();
    needle.add(new VarInsnNode(Opcodes.ALOAD, 0));
    needle.add(ASMHelper.getFieldInsnNode(Opcodes.GETFIELD, ASMNames.FD_PLAYER_WORLD_OBJ));
    needle.add(ASMHelper.getFieldInsnNode(Opcodes.GETFIELD, ASMNames.FD_WORLD_IS_REMOTE));
    LabelNode ln1 = new LabelNode();
    needle.add(new JumpInsnNode(Opcodes.IFNE, ln1));
    needle.add(new VarInsnNode(Opcodes.ALOAD, 0));
    needle.add(ASMHelper.getMethodInsnNode(Opcodes.INVOKEVIRTUAL, ASMNames.MD_PLAYER_IS_SNEAKING, false));
    needle.add(new JumpInsnNode(Opcodes.IFEQ, ln1));

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

    InsnList injectList = new InsnList();
    injectList.add(new VarInsnNode(Opcodes.ALOAD, 0));
    injectList.add(ASMHelper.getFieldInsnNode(Opcodes.GETFIELD, ASMNames.FD_PLAYER_RIDING_ENTITY));
    injectList.add(new VarInsnNode(Opcodes.ALOAD, 0));
    injectList.add(
            ASMHelper.getMethodInsnNode(Opcodes.INVOKEVIRTUAL, ASMNames.MD_SAP_CAN_DISMOUNT_ON_INPUT, false));
    injectList.add(new JumpInsnNode(Opcodes.IFEQ, ((JumpInsnNode) insertPoint).label));

    method.instructions.insert(insertPoint, injectList);

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

    return bytes;
}

---

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

License:Open Source License

/**
 * Gets the unboxing node./*from   ww w  .j a  v a2  s .  c  om*/
 * 
 * @param field
 *          the field
 * @return the unboxing node
 */
public static AbstractInsnNode getUnboxingNode(final FieldNode field) {
    final AbstractInsnNode unboxing;
    final Type type = Type.getType(field.desc);
    final int sort = type.getSort();
    if (sort == Type.INT) {
        unboxing = new MethodInsnNode(Opcodes.INVOKEVIRTUAL, Type.getInternalName(Integer.class), "intValue",
                "()I");
    } else if (sort == Type.LONG) {
        unboxing = new MethodInsnNode(Opcodes.INVOKEVIRTUAL, Type.getInternalName(Long.class), "longValue",
                "()J");
    } else if (sort == Type.FLOAT) {
        unboxing = new MethodInsnNode(Opcodes.INVOKEVIRTUAL, Type.getInternalName(Float.class), "intValue",
                "()F");
    } else if (sort == Type.DOUBLE) {
        unboxing = new MethodInsnNode(Opcodes.INVOKEVIRTUAL, Type.getInternalName(Double.class), "doubleValue",
                "()D");
    } else if (sort == Type.BOOLEAN) {
        unboxing = new MethodInsnNode(Opcodes.INVOKEVIRTUAL, Type.getInternalName(Boolean.class),
                "booleanValue", "()Z");
    } else if (sort == Type.SHORT) {
        unboxing = new MethodInsnNode(Opcodes.INVOKEVIRTUAL, Type.getInternalName(Short.class), "shortValue",
                "()S");
    } else if (sort == Type.CHAR) {
        unboxing = new MethodInsnNode(Opcodes.INVOKEVIRTUAL, Type.getInternalName(Character.class), "charValue",
                "()C");
    } else if (sort == Type.BYTE) {
        unboxing = new MethodInsnNode(Opcodes.INVOKEVIRTUAL, Type.getInternalName(Byte.class), "byteValue",
                "()B");
    } else {
        unboxing = null;
    }
    return unboxing;
}

---

From source file:de.tuberlin.uebb.jbop.optimizer.methodsplitter.Block.java

License:Open Source License

/**
 * Objects that are not parameters and not written before
 * these can be:/*from   ww w  .  j  a va  2  s. c  o  m*/
 * getField
 * getStatic
 * new
 * new array
 * new multi array
 * return type of method call
 */
private Type resolveType(final AbstractInsnNode node) {
    int arrayCount = 0;
    AbstractInsnNode currentNode = NodeHelper.getPrevious(node);
    while (currentNode != null) {
        final int opcode2 = currentNode.getOpcode();
        if (opcode2 == Opcodes.NEWARRAY) {
            final int operand = ((IntInsnNode) currentNode).operand;
            return getObjectType(operand);
        } else if (opcode2 == Opcodes.ANEWARRAY) {
            return getObjectType(((TypeInsnNode) currentNode).desc);
        } else if (opcode2 == Opcodes.MULTIANEWARRAY) {
            return getObjectType(((MultiANewArrayInsnNode) currentNode).desc);
        } else if (opcode2 == Opcodes.NEW) {
            final String desc = ((TypeInsnNode) currentNode).desc;
            return getObjectType(desc);
        } else if ((opcode2 >= Opcodes.IALOAD) && (opcode2 <= Opcodes.AALOAD)) {
            arrayCount++;
        } else if ((opcode2 == Opcodes.GETFIELD) || (opcode2 == Opcodes.GETSTATIC)) {
            final String desc = ((FieldInsnNode) currentNode).desc;
            return getObjectType(removeArrayType(desc, arrayCount));
        } else if ((opcode2 == Opcodes.ALOAD)) {
            final Type type2 = readers.getFirstVar(((VarInsnNode) currentNode).var).getParameterType();
            return getObjectType(removeArrayType(type2.getDescriptor(), arrayCount));
        } else if ((opcode2 >= Opcodes.INVOKEVIRTUAL) && (opcode2 <= Opcodes.INVOKEDYNAMIC)) {
            return Type.getReturnType(((MethodInsnNode) currentNode).desc);
        }
        currentNode = NodeHelper.getPrevious(currentNode);
    }
    return Type.VOID_TYPE;
}

---

From source file:de.unisb.cs.st.javalanche.coverage.CoverageMethodAdapter.java

License:Open Source License

public void visitCode() {
    if (!methodName.equals("<clinit>") && (instrumentLine || instrumentReturns)) {
        // System.out.println(className + "." + methodName);
        this.visitMethodInsn(Opcodes.INVOKESTATIC, CoverageProperties.TRACER_CLASS_NAME, "getInstance",
                "()L" + CoverageProperties.TRACER_CLASS_NAME + ";");
        this.visitLdcInsn(className);
        this.visitLdcInsn(methodName);
        this.visitLdcInsn(instrumentLine);
        this.visitLdcInsn(instrumentReturns);
        this.visitMethodInsn(Opcodes.INVOKEVIRTUAL, CoverageProperties.TRACER_CLASS_NAME, "begin",
                "(Ljava/lang/String;Ljava/lang/String;ZZ)V");
    }//from  ww w.  jav  a  2  s  .  c o m
    super.visitCode();
}

---

From source file:de.unisb.cs.st.javalanche.coverage.CoverageMethodAdapter.java

License:Open Source License

public void visitLineNumber(int line, Label start) {
    if (!methodName.equals("<clinit>") && instrumentLine) {
        this.visitMethodInsn(Opcodes.INVOKESTATIC, CoverageProperties.TRACER_CLASS_NAME, "getInstance",
                "()L" + CoverageProperties.TRACER_CLASS_NAME + ";");
        this.visitLdcInsn(line);
        this.visitLdcInsn(className);
        this.visitLdcInsn(methodName);
        this.visitMethodInsn(Opcodes.INVOKEVIRTUAL, CoverageProperties.TRACER_CLASS_NAME, "logLineNumber",
                "(ILjava/lang/String;Ljava/lang/String;)V");
    }/*from  www. jav  a  2s  .  c o  m*/
    super.visitLineNumber(line, start);
}

---

From source file:de.unisb.cs.st.javalanche.coverage.CoverageMethodAdapter.java

License:Open Source License

private void callLogPrototype(String traceMethod, PDType type) {
    if (type != PDType.LONG && type != PDType.DOUBLE) {
        this.visitInsn(Opcodes.DUP);
        if (type == PDType.FLOAT) {
            this.visitMethodInsn(Opcodes.INVOKESTATIC, "java/lang/Float", "floatToRawIntBits", "(F)I");
        }/* ww  w .  j  a  v  a 2  s.c o m*/
    } else {
        this.visitInsn(Opcodes.DUP2);
        if (type == PDType.DOUBLE) {
            this.visitMethodInsn(Opcodes.INVOKESTATIC, "java/lang/Double", "doubleToRawLongBits", "(D)J");
        }
        this.visitInsn(Opcodes.DUP2);
        this.visitIntInsn(Opcodes.BIPUSH, 32);
        this.visitInsn(Opcodes.LSHR);
        this.visitInsn(Opcodes.LXOR);
        this.visitInsn(Opcodes.L2I);
    }

    this.visitMethodInsn(Opcodes.INVOKESTATIC, CoverageProperties.TRACER_CLASS_NAME, "getInstance",
            "()L" + CoverageProperties.TRACER_CLASS_NAME + ";");
    this.visitInsn(Opcodes.SWAP);
    this.visitLdcInsn(className);
    this.visitLdcInsn(methodName);
    this.visitMethodInsn(Opcodes.INVOKEVIRTUAL, CoverageProperties.TRACER_CLASS_NAME, traceMethod,
            "(ILjava/lang/String;Ljava/lang/String;)V");
}

---

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