Example usage for org.objectweb.asm Opcodes GETFIELD

Introduction

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

Prototype

int GETFIELD

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

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Usage

From source file:com.khubla.jvmbasic.jvmbasicc.function.impl.rule.rightfuncRule.java

License:Open Source License

@Override
public boolean execute(GenerationContext generationContext) throws Exception {
    try {/*from w  ww.j  a v a  2s  .co  m*/
        /*
         * get the operands
         */
        Dispatcher.dispatchChildren(generationContext);
        /*
         * there should be 6 values. grammar is "RIGHT LPAREN expression COMMA expression RPAREN"
         */
        if (generationContext.getParseTree().getChildCount() == 6) {
            generationContext.getMethodVisitor().visitVarInsn(Opcodes.ALOAD, 0);
            generationContext.getMethodVisitor().visitFieldInsn(Opcodes.GETFIELD,
                    generationContext.getClassName(), RTLHelper.EXECUTIONCONTEXT_NAME,
                    RTLHelper.JASIC_RUNTIME_EXECUTIONCONTEXT_TYPE);
            generationContext.getMethodVisitor().visitVarInsn(Opcodes.ALOAD, 0);
            generationContext.getMethodVisitor().visitFieldInsn(Opcodes.GETFIELD,
                    generationContext.getClassName(), RTLHelper.EXECUTIONCONTEXT_NAME,
                    RTLHelper.JASIC_RUNTIME_EXECUTIONCONTEXT_TYPE);
            generationContext.getMethodVisitor().visitVarInsn(Opcodes.ALOAD, 0);
            generationContext.getMethodVisitor().visitFieldInsn(Opcodes.GETFIELD,
                    generationContext.getClassName(), RTLHelper.EXECUTIONCONTEXT_NAME,
                    RTLHelper.JASIC_RUNTIME_EXECUTIONCONTEXT_TYPE);
            generationContext.getMethodVisitor().visitMethodInsn(Opcodes.INVOKEVIRTUAL,
                    RTLHelper.JASIC_RUNTIME_EXECUTIONCONTEXT, "pop",
                    "()Lcom/khubla/jvmbasic/jvmbasicrt/Value;");
            generationContext.getMethodVisitor().visitMethodInsn(Opcodes.INVOKEVIRTUAL,
                    RTLHelper.JASIC_RUNTIME_EXECUTIONCONTEXT, "resolveValue",
                    "(Lcom/khubla/jvmbasic/jvmbasicrt/Value;)Lcom/khubla/jvmbasic/jvmbasicrt/Value;");
            generationContext.getMethodVisitor().visitVarInsn(Opcodes.ALOAD, 0);
            generationContext.getMethodVisitor().visitFieldInsn(Opcodes.GETFIELD,
                    generationContext.getClassName(), RTLHelper.EXECUTIONCONTEXT_NAME,
                    RTLHelper.JASIC_RUNTIME_EXECUTIONCONTEXT_TYPE);
            generationContext.getMethodVisitor().visitVarInsn(Opcodes.ALOAD, 0);
            generationContext.getMethodVisitor().visitFieldInsn(Opcodes.GETFIELD,
                    generationContext.getClassName(), RTLHelper.EXECUTIONCONTEXT_NAME,
                    RTLHelper.JASIC_RUNTIME_EXECUTIONCONTEXT_TYPE);
            generationContext.getMethodVisitor().visitMethodInsn(Opcodes.INVOKEVIRTUAL,
                    RTLHelper.JASIC_RUNTIME_EXECUTIONCONTEXT, "pop",
                    "()Lcom/khubla/jvmbasic/jvmbasicrt/Value;");
            generationContext.getMethodVisitor().visitMethodInsn(Opcodes.INVOKEVIRTUAL,
                    RTLHelper.JASIC_RUNTIME_EXECUTIONCONTEXT, "resolveValue",
                    "(Lcom/khubla/jvmbasic/jvmbasicrt/Value;)Lcom/khubla/jvmbasic/jvmbasicrt/Value;");
            generationContext.getMethodVisitor().visitMethodInsn(Opcodes.INVOKESTATIC,
                    "com/khubla/jvmbasic/jvmbasicrt/StringFunctions", "RIGHT",
                    "(Lcom/khubla/jvmbasic/jvmbasicrt/Value;Lcom/khubla/jvmbasic/jvmbasicrt/Value;)Ljava/lang/String;");
            generationContext.getMethodVisitor().visitMethodInsn(Opcodes.INVOKEVIRTUAL,
                    RTLHelper.JASIC_RUNTIME_EXECUTIONCONTEXT, "push", "(Ljava/lang/String;)V");
            return true;
        } else {
            throw new Exception("Invalid number of values passed to rightfuncRule");
        }
    } catch (final Exception e) {
        throw new Exception("Exception in execute", e);
    }
}

---

From source file:com.khubla.jvmbasic.jvmbasicc.function.impl.rule.rndfuncRule.java

License:Open Source License

@Override
public boolean execute(GenerationContext generationContext) throws Exception {
    try {/*from  www  . java  2s .c  o  m*/
        /*
         * get the operands
         */
        Dispatcher.dispatchChildren(generationContext);
        /*
         * declare the local var Random
         */
        generationContext.getMethodVisitor().visitVarInsn(Opcodes.ALOAD, 0);
        generationContext.getMethodVisitor().visitFieldInsn(Opcodes.GETFIELD, generationContext.getClassName(),
                RTLHelper.EXECUTIONCONTEXT_NAME, RTLHelper.JASIC_RUNTIME_EXECUTIONCONTEXT_TYPE);
        generationContext.getMethodVisitor().visitTypeInsn(Opcodes.NEW, "java/util/Random");
        generationContext.getMethodVisitor().visitInsn(Opcodes.DUP);
        generationContext.getMethodVisitor().visitMethodInsn(Opcodes.INVOKESPECIAL, "java/util/Random",
                "<init>", "()V");
        generationContext.getMethodVisitor().visitVarInsn(Opcodes.ALOAD, 0);
        generationContext.getMethodVisitor().visitFieldInsn(Opcodes.GETFIELD, generationContext.getClassName(),
                RTLHelper.EXECUTIONCONTEXT_NAME, RTLHelper.JASIC_RUNTIME_EXECUTIONCONTEXT_TYPE);
        generationContext.getMethodVisitor().visitMethodInsn(Opcodes.INVOKEVIRTUAL,
                RTLHelper.JASIC_RUNTIME_EXECUTIONCONTEXT, "pop", "()Lcom/khubla/jvmbasic/jvmbasicrt/Value;");
        generationContext.getMethodVisitor().visitMethodInsn(Opcodes.INVOKEVIRTUAL,
                "com/khubla/jvmbasic/jvmbasicrt/Value", "getInteger", "()Ljava/lang/Integer;");
        generationContext.getMethodVisitor().visitMethodInsn(Opcodes.INVOKEVIRTUAL, "java/lang/Integer",
                "intValue", "()I");
        generationContext.getMethodVisitor().visitMethodInsn(Opcodes.INVOKEVIRTUAL, "java/util/Random",
                "nextInt", "(I)I");
        generationContext.getMethodVisitor().visitMethodInsn(Opcodes.INVOKESTATIC, "java/lang/Integer",
                "valueOf", "(I)Ljava/lang/Integer;");
        generationContext.getMethodVisitor().visitMethodInsn(Opcodes.INVOKEVIRTUAL,
                RTLHelper.JASIC_RUNTIME_EXECUTIONCONTEXT, "push", "(Ljava/lang/Integer;)V");
        return true;
    } catch (final Exception e) {
        throw new Exception("Exception in execute", e);
    }
}

---

From source file:com.khubla.jvmbasic.jvmbasicc.function.impl.rule.sinfuncRule.java

License:Open Source License

@Override
public boolean execute(GenerationContext generationContext) throws Exception {
    try {//from   ww  w. ja  v  a 2s.c om
        /*
         * get the argument
         */
        Dispatcher.dispatchChildren(generationContext);
        /*
         * pop the argument and apply abs
         */
        generationContext.getMethodVisitor().visitVarInsn(Opcodes.ALOAD, 0);
        generationContext.getMethodVisitor().visitFieldInsn(Opcodes.GETFIELD, generationContext.getClassName(),
                RTLHelper.EXECUTIONCONTEXT_NAME, RTLHelper.JASIC_RUNTIME_EXECUTIONCONTEXT_TYPE);
        generationContext.getMethodVisitor().visitVarInsn(Opcodes.ALOAD, 0);
        generationContext.getMethodVisitor().visitFieldInsn(Opcodes.GETFIELD, generationContext.getClassName(),
                RTLHelper.EXECUTIONCONTEXT_NAME, RTLHelper.JASIC_RUNTIME_EXECUTIONCONTEXT_TYPE);
        generationContext.getMethodVisitor().visitMethodInsn(Opcodes.INVOKEVIRTUAL,
                RTLHelper.JASIC_RUNTIME_EXECUTIONCONTEXT, "pop", "()Lcom/khubla/jvmbasic/jvmbasicrt/Value;");
        generationContext.getMethodVisitor().visitMethodInsn(Opcodes.INVOKESTATIC, RTLHelper.JASIC_RUNTIME_MATH,
                "SIN", "(Lcom/khubla/jvmbasic/jvmbasicrt/Value;)Ljava/lang/Double;");
        generationContext.getMethodVisitor().visitMethodInsn(Opcodes.INVOKEVIRTUAL,
                RTLHelper.JASIC_RUNTIME_EXECUTIONCONTEXT, "push", "(Ljava/lang/Double;)V");
        return true;
    } catch (final Exception e) {
        throw new Exception("Exception in execute", e);
    }
}

---

From source file:com.khubla.jvmbasic.jvmbasicc.function.impl.rule.sqrfuncRule.java

License:Open Source License

@Override
public boolean execute(GenerationContext generationContext) throws Exception {
    try {//w  w w  .  j ava  2 s.co m
        /*
         * get the operands
         */
        Dispatcher.dispatchChildren(generationContext);
        /*
         * pop the argument and apply sqr
         */
        generationContext.getMethodVisitor().visitVarInsn(Opcodes.ALOAD, 0);
        generationContext.getMethodVisitor().visitFieldInsn(Opcodes.GETFIELD, generationContext.getClassName(),
                RTLHelper.EXECUTIONCONTEXT_NAME, RTLHelper.JASIC_RUNTIME_EXECUTIONCONTEXT_TYPE);
        generationContext.getMethodVisitor().visitVarInsn(Opcodes.ALOAD, 0);
        generationContext.getMethodVisitor().visitFieldInsn(Opcodes.GETFIELD, generationContext.getClassName(),
                RTLHelper.EXECUTIONCONTEXT_NAME, RTLHelper.JASIC_RUNTIME_EXECUTIONCONTEXT_TYPE);
        generationContext.getMethodVisitor().visitVarInsn(Opcodes.ALOAD, 0);
        generationContext.getMethodVisitor().visitFieldInsn(Opcodes.GETFIELD, generationContext.getClassName(),
                RTLHelper.EXECUTIONCONTEXT_NAME, RTLHelper.JASIC_RUNTIME_EXECUTIONCONTEXT_TYPE);
        generationContext.getMethodVisitor().visitMethodInsn(Opcodes.INVOKEVIRTUAL,
                RTLHelper.JASIC_RUNTIME_EXECUTIONCONTEXT, "pop", "()Lcom/khubla/jvmbasic/jvmbasicrt/Value;");
        generationContext.getMethodVisitor().visitMethodInsn(Opcodes.INVOKEVIRTUAL,
                RTLHelper.JASIC_RUNTIME_EXECUTIONCONTEXT, "resolveValue",
                "(Lcom/khubla/jvmbasic/jvmbasicrt/Value;)Lcom/khubla/jvmbasic/jvmbasicrt/Value;");
        generationContext.getMethodVisitor().visitMethodInsn(Opcodes.INVOKESTATIC, RTLHelper.JASIC_RUNTIME_MATH,
                "SQR", "(Lcom/khubla/jvmbasic/jvmbasicrt/Value;)Ljava/lang/Double;");
        generationContext.getMethodVisitor().visitMethodInsn(Opcodes.INVOKEVIRTUAL,
                RTLHelper.JASIC_RUNTIME_EXECUTIONCONTEXT, "push", "(Ljava/lang/Double;)V");
        return true;
    } catch (final Exception e) {
        throw new Exception("Exception in execute", e);
    }
}

---

From source file:com.khubla.jvmbasic.jvmbasicc.function.impl.rule.strfuncRule.java

License:Open Source License

@Override
public boolean execute(GenerationContext generationContext) throws Exception {
    try {/*w w w  .j  a v  a2 s .c  om*/
        /*
         * get the operands
         */
        Dispatcher.dispatchChildren(generationContext);
        /*
         * there should be 4
         */
        if (generationContext.getParseTree().getChildCount() == 4) {
            generationContext.getMethodVisitor().visitVarInsn(Opcodes.ALOAD, 0);
            generationContext.getMethodVisitor().visitFieldInsn(Opcodes.GETFIELD,
                    generationContext.getClassName(), RTLHelper.EXECUTIONCONTEXT_NAME,
                    RTLHelper.JASIC_RUNTIME_EXECUTIONCONTEXT_TYPE);
            generationContext.getMethodVisitor().visitVarInsn(Opcodes.ALOAD, 0);
            generationContext.getMethodVisitor().visitFieldInsn(Opcodes.GETFIELD,
                    generationContext.getClassName(), RTLHelper.EXECUTIONCONTEXT_NAME,
                    RTLHelper.JASIC_RUNTIME_EXECUTIONCONTEXT_TYPE);
            generationContext.getMethodVisitor().visitVarInsn(Opcodes.ALOAD, 0);
            generationContext.getMethodVisitor().visitFieldInsn(Opcodes.GETFIELD,
                    generationContext.getClassName(), RTLHelper.EXECUTIONCONTEXT_NAME,
                    RTLHelper.JASIC_RUNTIME_EXECUTIONCONTEXT_TYPE);
            generationContext.getMethodVisitor().visitMethodInsn(Opcodes.INVOKEVIRTUAL,
                    RTLHelper.JASIC_RUNTIME_EXECUTIONCONTEXT, "pop",
                    "()Lcom/khubla/jvmbasic/jvmbasicrt/Value;");
            generationContext.getMethodVisitor().visitMethodInsn(Opcodes.INVOKEVIRTUAL,
                    RTLHelper.JASIC_RUNTIME_EXECUTIONCONTEXT, "resolveValue",
                    "(Lcom/khubla/jvmbasic/jvmbasicrt/Value;)Lcom/khubla/jvmbasic/jvmbasicrt/Value;");
            generationContext.getMethodVisitor().visitMethodInsn(Opcodes.INVOKESTATIC,
                    "com/khubla/jvmbasic/jvmbasicrt/StringFunctions", "STR",
                    "(Lcom/khubla/jvmbasic/jvmbasicrt/Value;)Ljava/lang/String;");
            generationContext.getMethodVisitor().visitMethodInsn(Opcodes.INVOKEVIRTUAL,
                    RTLHelper.JASIC_RUNTIME_EXECUTIONCONTEXT, "push", "(Ljava/lang/String;)V");
            return true;
        } else {
            throw new Exception("strfuncRule requires a value");
        }
    } catch (final Exception e) {
        throw new Exception("Exception in execute", e);
    }
}

---

From source file:com.khubla.jvmbasic.jvmbasicc.function.impl.rule.tanfuncRule.java

License:Open Source License

@Override
public boolean execute(GenerationContext generationContext) throws Exception {
    try {//  w w  w  .  jav a  2s.com
        /*
         * get the argument
         */
        Dispatcher.dispatchChildren(generationContext);
        /*
         * pop the argument and apply abs
         */
        generationContext.getMethodVisitor().visitVarInsn(Opcodes.ALOAD, 0);
        generationContext.getMethodVisitor().visitFieldInsn(Opcodes.GETFIELD, generationContext.getClassName(),
                RTLHelper.EXECUTIONCONTEXT_NAME, RTLHelper.JASIC_RUNTIME_EXECUTIONCONTEXT_TYPE);
        generationContext.getMethodVisitor().visitVarInsn(Opcodes.ALOAD, 0);
        generationContext.getMethodVisitor().visitFieldInsn(Opcodes.GETFIELD, generationContext.getClassName(),
                RTLHelper.EXECUTIONCONTEXT_NAME, RTLHelper.JASIC_RUNTIME_EXECUTIONCONTEXT_TYPE);
        generationContext.getMethodVisitor().visitMethodInsn(Opcodes.INVOKEVIRTUAL,
                RTLHelper.JASIC_RUNTIME_EXECUTIONCONTEXT, "pop", "()Lcom/khubla/jvmbasic/jvmbasicrt/Value;");
        generationContext.getMethodVisitor().visitMethodInsn(Opcodes.INVOKESTATIC, RTLHelper.JASIC_RUNTIME_MATH,
                "TAN", "(Lcom/khubla/jvmbasic/jvmbasicrt/Value;)Ljava/lang/Double;");
        generationContext.getMethodVisitor().visitMethodInsn(Opcodes.INVOKEVIRTUAL,
                RTLHelper.JASIC_RUNTIME_EXECUTIONCONTEXT, "push", "(Ljava/lang/Double;)V");
        return true;
    } catch (final Exception e) {
        throw new Exception("Exception in execute", e);
    }
}

---

From source file:com.khubla.jvmbasic.jvmbasicc.function.impl.rule.valfuncRule.java

License:Open Source License

@Override
public boolean execute(GenerationContext generationContext) throws Exception {
    try {//from  w ww  .  j  a  v a 2 s .c o m
        /*
         * get the operands
         */
        Dispatcher.dispatchChildren(generationContext);
        /*
         * there should be 4 values
         */
        if (generationContext.getParseTree().getChildCount() == 4) {
            generationContext.getMethodVisitor().visitVarInsn(Opcodes.ALOAD, 0);
            generationContext.getMethodVisitor().visitFieldInsn(Opcodes.GETFIELD,
                    generationContext.getClassName(), RTLHelper.EXECUTIONCONTEXT_NAME,
                    RTLHelper.JASIC_RUNTIME_EXECUTIONCONTEXT_TYPE);
            generationContext.getMethodVisitor().visitVarInsn(Opcodes.ALOAD, 0);
            generationContext.getMethodVisitor().visitFieldInsn(Opcodes.GETFIELD,
                    generationContext.getClassName(), RTLHelper.EXECUTIONCONTEXT_NAME,
                    RTLHelper.JASIC_RUNTIME_EXECUTIONCONTEXT_TYPE);
            generationContext.getMethodVisitor().visitVarInsn(Opcodes.ALOAD, 0);
            generationContext.getMethodVisitor().visitFieldInsn(Opcodes.GETFIELD,
                    generationContext.getClassName(), RTLHelper.EXECUTIONCONTEXT_NAME,
                    RTLHelper.JASIC_RUNTIME_EXECUTIONCONTEXT_TYPE);
            generationContext.getMethodVisitor().visitMethodInsn(Opcodes.INVOKEVIRTUAL,
                    RTLHelper.JASIC_RUNTIME_EXECUTIONCONTEXT, "pop",
                    "()Lcom/khubla/jvmbasic/jvmbasicrt/Value;");
            generationContext.getMethodVisitor().visitMethodInsn(Opcodes.INVOKEVIRTUAL,
                    RTLHelper.JASIC_RUNTIME_EXECUTIONCONTEXT, "resolveValue",
                    "(Lcom/khubla/jvmbasic/jvmbasicrt/Value;)Lcom/khubla/jvmbasic/jvmbasicrt/Value;");
            generationContext.getMethodVisitor().visitMethodInsn(Opcodes.INVOKESTATIC,
                    "com/khubla/jvmbasic/jvmbasicrt/StringFunctions", "VAL",
                    "(Lcom/khubla/jvmbasic/jvmbasicrt/Value;)Ljava/lang/String;");
            generationContext.getMethodVisitor().visitMethodInsn(Opcodes.INVOKEVIRTUAL,
                    RTLHelper.JASIC_RUNTIME_EXECUTIONCONTEXT, "push", "(Ljava/lang/String;)V");
            return true;
        } else {
            throw new Exception("VAL requires a value");
        }
    } catch (final Exception e) {
        throw new Exception("Exception in execute", e);
    }
}

---

From source file:com.khubla.jvmbasic.jvmbasicc.function.impl.rule.variableassignmentRule.java

License:Open Source License

@Override
public boolean execute(GenerationContext generationContext) throws Exception {
    try {//from   ww w .j av a 2 s .c  o  m
        /*
         * the tree should have 3 sub nodes like this "variableassignment : vardecl EQ exprlist"
         */
        String variableName = null;
        if (generationContext.getParseTree().getChildCount() == 3) {
            /*
             * get the variable name
             */
            variableName = VariableNameUtil
                    .getVariableName((VardeclContext) generationContext.getParseTree().getChild(0));
            /*
             * get the tree for the value. this should push the value onto the ExecutionContextStack
             */
            final ExprlistContext exprlistContext = (ExprlistContext) generationContext.getParseTree()
                    .getChild(2);
            final GenerationContext subGenerationContext = new GenerationContext(generationContext,
                    exprlistContext);
            Dispatcher.dispatch(subGenerationContext);
        } else {
            throw new Exception(
                    "Invalid number of arguments '" + generationContext.getParseTree().getChildCount() + "'");
        }
        /*
         * store the top of the stack into slot 1
         */
        generationContext.getMethodVisitor().visitVarInsn(Opcodes.ALOAD, 0);
        generationContext.getMethodVisitor().visitFieldInsn(Opcodes.GETFIELD, generationContext.getClassName(),
                RTLHelper.EXECUTIONCONTEXT_NAME, RTLHelper.JASIC_RUNTIME_EXECUTIONCONTEXT_TYPE);
        generationContext.getMethodVisitor().visitMethodInsn(Opcodes.INVOKEVIRTUAL,
                RTLHelper.JASIC_RUNTIME_EXECUTIONCONTEXT, "pop", "()Lcom/khubla/jvmbasic/jvmbasicrt/Value;");
        generationContext.getMethodVisitor().visitVarInsn(Opcodes.ASTORE, 1);
        /*
         * put the value in slot 1 into the variable in the execution context
         */
        generationContext.getMethodVisitor().visitVarInsn(Opcodes.ALOAD, 0);
        generationContext.getMethodVisitor().visitFieldInsn(Opcodes.GETFIELD, generationContext.getClassName(),
                RTLHelper.EXECUTIONCONTEXT_NAME, RTLHelper.JASIC_RUNTIME_EXECUTIONCONTEXT_TYPE);
        generationContext.getMethodVisitor().visitLdcInsn(variableName);
        generationContext.getMethodVisitor().visitVarInsn(Opcodes.ALOAD, 1);
        generationContext.getMethodVisitor().visitMethodInsn(Opcodes.INVOKEVIRTUAL,
                RTLHelper.JASIC_RUNTIME_EXECUTIONCONTEXT, "setVariable",
                "(Ljava/lang/String;Lcom/khubla/jvmbasic/jvmbasicrt/Value;)V");
        return true;
    } catch (final Exception e) {
        throw new Exception("Exception in execute", e);
    }
}

---

From source file:com.liferay.portal.nio.intraband.proxy.IntrabandProxyUtilTest.java

License:Open Source License

private void _doTestCreateProxyMethodNode(Method method, int index, String skeletonId,
        String stubInternalName) {

    MethodNode proxyMethodNode = IntrabandProxyUtil.createProxyMethodNode(method, index, skeletonId,
            Type.getType(stubInternalName));

    _assertMethodNodeSignature(proxyMethodNode, method.getModifiers() & ~Modifier.ABSTRACT, method.getName(),
            Type.getMethodDescriptor(method), method.getExceptionTypes());

    InsnList insnList = proxyMethodNode.instructions;

    Iterator<AbstractInsnNode> iterator = insnList.iterator();

    // NEW com/liferay/portal/kernel/io/Serializer

    _assertTypeInsnNode(iterator.next(), Opcodes.NEW, Serializer.class);

    // DUP//from   w  w w . jav a  2  s  .c o m

    _assertInsnNode(iterator.next(), Opcodes.DUP);

    // INVOKESPECIAL com/liferay/portal/kernel/io/Serializer <init> ()V

    _assertMethodInsnNode(iterator.next(), Opcodes.INVOKESPECIAL, Type.getInternalName(Serializer.class),
            "<init>", Type.VOID_TYPE);

    // ASTORE argumentsSize

    Type methodType = Type.getType(method);

    int argumentsAndReturnSizes = methodType.getArgumentsAndReturnSizes();

    int argumentsSize = argumentsAndReturnSizes >> 2;

    _assertVarInsnNode(iterator.next(), Opcodes.ASTORE, argumentsSize);

    // ALOAD argumentsSize

    _assertVarInsnNode(iterator.next(), Opcodes.ALOAD, argumentsSize);

    // LDC skeletonId

    _assertLdcInsnNode(iterator.next(), Opcodes.LDC, skeletonId);

    // INVOKEVIRTUAL com/liferay/portal/kernel/io/Serializer writeString
    // (Ljava/lang/String;)V

    _assertMethodInsnNode(iterator.next(), Opcodes.INVOKEVIRTUAL, Type.getInternalName(Serializer.class),
            "writeString", Type.VOID_TYPE, Type.getType(String.class));

    // ALOAD argumentsSize

    _assertVarInsnNode(iterator.next(), Opcodes.ALOAD, argumentsSize);

    // ALOAD 0

    _assertVarInsnNode(iterator.next(), Opcodes.ALOAD, 0);

    // GETFIELD stubInternalName _id Ljava/lang/String;

    _assertFieldInsnNode(iterator.next(), Opcodes.GETFIELD, stubInternalName, "_id", String.class);

    // INVOKEVIRTUAL com/liferay/portal/kernel/io/Serializer writeString
    // (Ljava/lang/String;)V

    _assertMethodInsnNode(iterator.next(), Opcodes.INVOKEVIRTUAL, Type.getInternalName(Serializer.class),
            "writeString", Type.VOID_TYPE, Type.getType(String.class));

    // ALOAD argumentsSize

    _assertVarInsnNode(iterator.next(), Opcodes.ALOAD, argumentsSize);

    if (index <= 5) {

        // ICONST_index

        _assertInsnNode(iterator.next(), Opcodes.ICONST_0 + index);
    } else {

        // BIPUSH index

        _assertIntInsnNode(iterator.next(), Opcodes.BIPUSH, index);
    }

    // INVOKEVIRTUAL com/liferay/portal/kernel/io/Serializer writeInt (I)V

    _assertMethodInsnNode(iterator.next(), Opcodes.INVOKEVIRTUAL, Type.getInternalName(Serializer.class),
            "writeInt", Type.VOID_TYPE, Type.INT_TYPE);

    Class<?>[] parameterTypes = method.getParameterTypes();

    int offset = 1;

    for (int i = 0; i < parameterTypes.length; i++) {
        Class<?> parameterClass = parameterTypes[i];

        // ALOAD argumentsSize

        _assertVarInsnNode(iterator.next(), Opcodes.ALOAD, argumentsSize);

        // xLOAD i

        Type parameterType = Type.getType(parameterClass);

        _assertVarInsnNode(iterator.next(), parameterType.getOpcode(Opcodes.ILOAD), offset);

        offset += parameterType.getSize();

        if (parameterClass.isPrimitive() || (parameterClass == String.class)) {

            String name = TextFormatter.format(parameterClass.getSimpleName(), TextFormatter.G);

            _assertMethodInsnNode(iterator.next(), Opcodes.INVOKEVIRTUAL,
                    Type.getInternalName(Serializer.class), "write".concat(name), Type.VOID_TYPE,
                    parameterType);
        } else {
            _assertMethodInsnNode(iterator.next(), Opcodes.INVOKEVIRTUAL,
                    Type.getInternalName(Serializer.class), "writeObject", Type.VOID_TYPE,
                    Type.getType(Serializable.class));
        }
    }

    // ALOAD 0

    _assertVarInsnNode(iterator.next(), Opcodes.ALOAD, 0);

    // ALOAD argumentsSize

    _assertVarInsnNode(iterator.next(), Opcodes.ALOAD, argumentsSize);

    Class<?> returnClass = method.getReturnType();

    Type returnType = Type.getType(returnClass);

    if (returnClass == void.class) {

        // INVOKESPECIAL stubInternalName _send
        // (Lcom/liferay/portal/kernel/io/Serializer;)V

        _assertMethodInsnNode(iterator.next(), Opcodes.INVOKESPECIAL, stubInternalName, "_send", Type.VOID_TYPE,
                Type.getType(Serializer.class));

        _assertInsnNode(iterator.next(), Opcodes.RETURN);
    } else {

        // INVOKESPECIAL stubInternalName _syncSend
        // (Lcom/liferay/portal/kernel/io/Serializer;)Ljava/io/Serializable;

        _assertMethodInsnNode(iterator.next(), Opcodes.INVOKESPECIAL, stubInternalName, "_syncSend",
                Type.getType(Serializable.class), Type.getType(Serializer.class));

        if (returnClass.isPrimitive()) {

            // ASTORE argumentsSize + 1

            _assertVarInsnNode(iterator.next(), Opcodes.ASTORE, argumentsSize + 1);

            // ALOAD argumentsSize + 1

            _assertVarInsnNode(iterator.next(), Opcodes.ALOAD, argumentsSize + 1);

            // IFNULL nullCheckLabel

            LabelNode nullCheckLabelNode = _assertJumpInsnNode(iterator.next(), Opcodes.IFNULL);

            // ALOAD argumentsSize + 1

            _assertVarInsnNode(iterator.next(), Opcodes.ALOAD, argumentsSize + 1);

            // CHECKCAST returnType

            _assertTypeInsnNode(iterator.next(), Opcodes.CHECKCAST, _autoboxingMap.get(returnClass));

            if (returnClass == boolean.class) {

                // INVOKEVIRTUAL java/lang/Boolean booleanValue ()Z

                _assertMethodInsnNode(iterator.next(), Opcodes.INVOKEVIRTUAL,
                        Type.getInternalName(Boolean.class), "booleanValue", Type.BOOLEAN_TYPE);
            } else if (returnClass == byte.class) {

                // INVOKEVIRTUAL java/lang/Number intValue ()I

                _assertMethodInsnNode(iterator.next(), Opcodes.INVOKEVIRTUAL,
                        Type.getInternalName(Number.class), "intValue", Type.INT_TYPE);
            } else if (returnClass == char.class) {

                // INVOKEVIRTUAL java/lang/Character charValue ()C

                _assertMethodInsnNode(iterator.next(), Opcodes.INVOKEVIRTUAL,
                        Type.getInternalName(Character.class), "charValue", Type.CHAR_TYPE);
            } else if (returnClass == double.class) {

                // INVOKEVIRTUAL java/lang/Number doubleValue ()D

                _assertMethodInsnNode(iterator.next(), Opcodes.INVOKEVIRTUAL,
                        Type.getInternalName(Number.class), "doubleValue", Type.DOUBLE_TYPE);
            } else if (returnClass == float.class) {

                // INVOKEVIRTUAL java/lang/Number floatValue ()F

                _assertMethodInsnNode(iterator.next(), Opcodes.INVOKEVIRTUAL,
                        Type.getInternalName(Number.class), "floatValue", Type.FLOAT_TYPE);
            } else if (returnClass == int.class) {

                // INVOKEVIRTUAL java/lang/Number intValue ()I

                _assertMethodInsnNode(iterator.next(), Opcodes.INVOKEVIRTUAL,
                        Type.getInternalName(Number.class), "intValue", Type.INT_TYPE);
            } else if (returnClass == long.class) {

                // INVOKEVIRTUAL java/lang/Number longValue ()J

                _assertMethodInsnNode(iterator.next(), Opcodes.INVOKEVIRTUAL,
                        Type.getInternalName(Number.class), "longValue", Type.LONG_TYPE);
            } else if (returnClass == short.class) {

                // INVOKEVIRTUAL java/lang/Number intValue ()I

                _assertMethodInsnNode(iterator.next(), Opcodes.INVOKEVIRTUAL,
                        Type.getInternalName(Number.class), "intValue", Type.INT_TYPE);
            }

            // xRETURN

            _assertInsnNode(iterator.next(), returnType.getOpcode(Opcodes.IRETURN));

            // nullCheckLabel

            Assert.assertSame(nullCheckLabelNode, iterator.next());

            // xRETURN null/0

            if (!returnClass.isPrimitive()) {
                _assertInsnNode(iterator.next(), Opcodes.ACONST_NULL);
                _assertInsnNode(iterator.next(), Opcodes.ARETURN);
            } else if (returnClass == void.class) {
                _assertInsnNode(iterator.next(), Opcodes.RETURN);
            } else if (returnClass == float.class) {
                _assertInsnNode(iterator.next(), Opcodes.FCONST_0);
                _assertInsnNode(iterator.next(), Opcodes.FRETURN);
            } else if (returnClass == double.class) {
                _assertInsnNode(iterator.next(), Opcodes.DCONST_0);
                _assertInsnNode(iterator.next(), Opcodes.DRETURN);
            } else if (returnClass == long.class) {
                _assertInsnNode(iterator.next(), Opcodes.LCONST_0);
                _assertInsnNode(iterator.next(), Opcodes.LRETURN);
            } else {
                _assertInsnNode(iterator.next(), Opcodes.ICONST_0);
                _assertInsnNode(iterator.next(), Opcodes.IRETURN);
            }
        } else {
            if (returnClass != Object.class) {

                // CHECKCAST

                _assertTypeInsnNode(iterator.next(), Opcodes.CHECKCAST, returnClass);
            }

            // ARETURN

            _assertInsnNode(iterator.next(), Opcodes.ARETURN);
        }
    }

    Assert.assertFalse(iterator.hasNext());
}

---

From source file:com.lion328.thaifixes.coremod.patcher.GuiNewChatBytecodePatcher.java

License:Open Source License

@Override
public byte[] patchClass(byte[] source) {
    if (ThaiFixesConfiguration.getFontStyle() != ThaiFixesFontStyle.MCPX)
        return source;

    ClassReader classReader = new ClassReader(source);
    ClassNode classNode = new ClassNode();
    classReader.accept(classNode, 0);// www . jav  a 2  s . co m

    for (MethodNode method : classNode.methods) {
        if (method.name.equals(CLASSMAP.getMethod("drawChat")) && method.desc.equals("(I)V")) {
            AbstractInsnNode currentNode = null;
            for (int i = 0; i < method.instructions.size(); i++) {
                currentNode = method.instructions.get(i);
                if (currentNode.getOpcode() == Opcodes.BIPUSH) {
                    if (method.instructions.get(i + 1).getOpcode() == Opcodes.IMUL)
                        method.instructions.set(currentNode,
                                new VarInsnNode(Opcodes.BIPUSH, ThaiFixesFontRenderer.MCPX_CHATBLOCK_HEIGHT));
                    else if (method.instructions.get(i + 1).getOpcode() == Opcodes.ISUB
                            && method.instructions.get(i - 1).getOpcode() == Opcodes.ILOAD) {
                        IntInsnNode node = (IntInsnNode) currentNode;
                        if (node.operand == 9)
                            method.instructions.set(currentNode, new VarInsnNode(Opcodes.BIPUSH,
                                    ThaiFixesFontRenderer.MCPX_CHATBLOCK_HEIGHT));
                        else if (node.operand == 8)
                            method.instructions.set(currentNode, new VarInsnNode(Opcodes.BIPUSH,
                                    ThaiFixesFontRenderer.MCPX_CHATBLOCK_TEXT_YPOS));
                    }
                }
            }
        } else if (method.name.equals(CLASSMAP.getMethod("func_146236_a"))
                && method.desc.equals("(II)L" + ClassMap.getClassMap("net.minecraft.util.IChatComponent")
                        .getClassInfo().getProductionClassName().replace('.', '/') + ";")) {
            for (int i = 0; i < method.instructions.size(); i++) {
                if (method.instructions.get(i).getOpcode() == Opcodes.GETFIELD) {
                    FieldInsnNode node = (FieldInsnNode) method.instructions.get(i);
                    if (node.owner.equals(ClassMap.getClassMap("net.minecraft.client.gui.FontRenderer")
                            .getClassInfo().getProductionClassName().replace('.', '/'))
                            && node.name.equals(ClassMap.getClassMap("net.minecraft.client.gui.FontRenderer")
                                    .getField("FONT_HEIGHT"))) {
                        method.instructions.set(node,
                                new VarInsnNode(Opcodes.BIPUSH, ThaiFixesFontRenderer.MCPX_CHATBLOCK_HEIGHT));
                        method.instructions.remove(method.instructions.get(i - 1)); // GETFIELD Minecraft.mc
                        method.instructions.remove(method.instructions.get(i - 2)); // GETFIELD GuiNewChat.mc
                        method.instructions.remove(method.instructions.get(i - 3)); // ALOAD 0
                    }
                }
            }
        }
    }

    ClassWriter writer = new ClassWriter(ClassWriter.COMPUTE_MAXS);
    classNode.accept(writer);
    return writer.toByteArray();
}

---

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