Example usage for org.objectweb.asm MethodVisitor visitIntInsn

Introduction

In this page you can find the example usage for org.objectweb.asm MethodVisitor visitIntInsn.

Prototype

public void visitIntInsn(final int opcode, final int operand) 

Source Link

Document

Visits an instruction with a single int operand.

Usage

From source file:org.adjective.stout.instruction.IntInstruction.java

License:Apache License

public void accept(MethodVisitor visitor) {
    visitor.visitIntInsn(getOpCode(), _arg);
}

---

From source file:org.alkemy.instr.ConstructorWriter.java

License:Open Source License

private static void visitInStack(int i, MethodVisitor mv) {
    if (i == 0) {
        mv.visitInsn(ICONST_0);// ww  w.j a  v a  2s .  co  m
    } else if (i == 1) {
        mv.visitInsn(ICONST_1);
    } else if (i == 2) {
        mv.visitInsn(ICONST_2);
    } else if (i == 3) {
        mv.visitInsn(ICONST_3);
    } else if (i == 4) {
        mv.visitInsn(ICONST_4);
    } else if (i == 5) {
        mv.visitInsn(ICONST_5);
    } else if (i <= 127) {
        mv.visitIntInsn(BIPUSH, i);
    } else {
        mv.visitIntInsn(SIPUSH, i);
    }
}

---

From source file:org.apache.cxf.jaxb.WrapperHelperCompiler.java

License:Apache License

private boolean addCreateWrapperObject(String newClassName, Class<?> objectFactoryClass) {

    MethodVisitor mv = cw.visitMethod(Opcodes.ACC_PUBLIC, "createWrapperObject",
            "(Ljava/util/List;)Ljava/lang/Object;", "(Ljava/util/List<*>;)Ljava/lang/Object;",
            new String[] { "org/apache/cxf/interceptor/Fault" });
    mv.visitCode();/*from  w w  w  . j  av a2 s.  c  o m*/
    Label lBegin = new Label();
    mv.visitLabel(lBegin);
    mv.visitLineNumber(104, lBegin);

    mv.visitTypeInsn(Opcodes.NEW, periodToSlashes(wrapperType.getName()));
    mv.visitInsn(Opcodes.DUP);
    mv.visitMethodInsn(Opcodes.INVOKESPECIAL, periodToSlashes(wrapperType.getName()), "<init>", "()V");
    mv.visitVarInsn(Opcodes.ASTORE, 2);

    for (int x = 0; x < setMethods.length; x++) {
        if (getMethods[x] == null) {
            if (setMethods[x] == null && fields[x] == null) {
                // null placeholder
                continue;
            } else {
                return false;
            }
        }
        Class<?> tp = getMethods[x].getReturnType();
        mv.visitVarInsn(Opcodes.ALOAD, 2);

        if (List.class.isAssignableFrom(tp)) {
            doCollection(mv, x);
        } else {
            if (JAXBElement.class.isAssignableFrom(tp)) {
                mv.visitVarInsn(Opcodes.ALOAD, 0);
                mv.visitFieldInsn(Opcodes.GETFIELD, periodToSlashes(newClassName), "factory",
                        "L" + periodToSlashes(objectFactoryClass.getName()) + ";");
            }
            mv.visitVarInsn(Opcodes.ALOAD, 1);
            mv.visitIntInsn(Opcodes.BIPUSH, x);
            mv.visitMethodInsn(Opcodes.INVOKEINTERFACE, "java/util/List", "get", "(I)Ljava/lang/Object;");

            if (tp.isPrimitive()) {
                mv.visitTypeInsn(Opcodes.CHECKCAST, NONPRIMITIVE_MAP.get(tp));
                mv.visitMethodInsn(Opcodes.INVOKEVIRTUAL, NONPRIMITIVE_MAP.get(tp), tp.getName() + "Value",
                        "()" + PRIMITIVE_MAP.get(tp));
            } else if (JAXBElement.class.isAssignableFrom(tp)) {
                mv.visitTypeInsn(Opcodes.CHECKCAST,
                        periodToSlashes(jaxbMethods[x].getParameterTypes()[0].getName()));
                mv.visitMethodInsn(Opcodes.INVOKEVIRTUAL, periodToSlashes(objectFactoryClass.getName()),
                        jaxbMethods[x].getName(), getMethodSignature(jaxbMethods[x]));
            } else if (tp.isArray()) {
                mv.visitTypeInsn(Opcodes.CHECKCAST, getClassCode(tp));
            } else {
                mv.visitTypeInsn(Opcodes.CHECKCAST, periodToSlashes(tp.getName()));
            }
            mv.visitMethodInsn(Opcodes.INVOKEVIRTUAL, periodToSlashes(wrapperType.getName()),
                    setMethods[x].getName(), "(" + getClassCode(tp) + ")V");
        }
    }

    mv.visitVarInsn(Opcodes.ALOAD, 2);
    mv.visitInsn(Opcodes.ARETURN);

    Label lEnd = new Label();
    mv.visitLabel(lEnd);
    mv.visitLocalVariable("this", "L" + newClassName + ";", null, lBegin, lEnd, 0);
    mv.visitLocalVariable("lst", "Ljava/util/List;", "Ljava/util/List<*>;", lBegin, lEnd, 1);
    mv.visitLocalVariable("ok", "L" + periodToSlashes(wrapperType.getName()) + ";", null, lBegin, lEnd, 2);
    mv.visitMaxs(0, 0);
    mv.visitEnd();
    return true;
}

---

From source file:org.apache.cxf.jaxb.WrapperHelperCompiler.java

License:Apache License

private void doCollection(MethodVisitor mv, int x) {
    // List aVal = obj.getA();
    // List newA = (List)lst.get(99);
    // if (aVal == null) {
    // obj.setA(newA);
    // } else if (newA != null) {
    // aVal.addAll(newA);
    // }/*  ww  w  . j  a  v a 2 s  .c o  m*/

    Label l3 = new Label();
    mv.visitLabel(l3);
    mv.visitLineNumber(114, l3);

    mv.visitMethodInsn(Opcodes.INVOKEVIRTUAL, periodToSlashes(wrapperType.getName()), getMethods[x].getName(),
            getMethodSignature(getMethods[x]));
    mv.visitVarInsn(Opcodes.ASTORE, 3);
    mv.visitVarInsn(Opcodes.ALOAD, 1);
    mv.visitIntInsn(Opcodes.BIPUSH, x);
    mv.visitMethodInsn(Opcodes.INVOKEINTERFACE, "java/util/List", "get", "(I)Ljava/lang/Object;");
    mv.visitTypeInsn(Opcodes.CHECKCAST, "java/util/List");
    mv.visitVarInsn(Opcodes.ASTORE, 4);
    mv.visitVarInsn(Opcodes.ALOAD, 3);
    Label nonNullLabel = new Label();
    mv.visitJumpInsn(Opcodes.IFNONNULL, nonNullLabel);

    if (setMethods[x] == null) {
        mv.visitTypeInsn(Opcodes.NEW, "java/lang/RuntimeException");
        mv.visitInsn(Opcodes.DUP);
        mv.visitLdcInsn(getMethods[x].getName() + " returned null and there isn't a set method.");
        mv.visitMethodInsn(Opcodes.INVOKESPECIAL, "java/lang/RuntimeException", "<init>",
                "(Ljava/lang/String;)V");
        mv.visitInsn(Opcodes.ATHROW);
    } else {
        mv.visitVarInsn(Opcodes.ALOAD, 2);
        mv.visitVarInsn(Opcodes.ALOAD, 4);
        mv.visitTypeInsn(Opcodes.CHECKCAST, getMethods[x].getReturnType().getName().replace('.', '/'));
        mv.visitMethodInsn(Opcodes.INVOKEVIRTUAL, periodToSlashes(wrapperType.getName()),
                setMethods[x].getName(), getMethodSignature(setMethods[x]));
    }
    Label jumpOverLabel = new Label();
    mv.visitJumpInsn(Opcodes.GOTO, jumpOverLabel);
    mv.visitLabel(nonNullLabel);
    mv.visitLineNumber(106, nonNullLabel);

    mv.visitVarInsn(Opcodes.ALOAD, 4);
    mv.visitJumpInsn(Opcodes.IFNULL, jumpOverLabel);
    mv.visitVarInsn(Opcodes.ALOAD, 3);
    mv.visitVarInsn(Opcodes.ALOAD, 4);
    mv.visitMethodInsn(Opcodes.INVOKEINTERFACE, "java/util/List", "addAll", "(Ljava/util/Collection;)Z");
    mv.visitInsn(Opcodes.POP);
    mv.visitLabel(jumpOverLabel);
    mv.visitLineNumber(107, jumpOverLabel);
}

---

From source file:org.apache.directmemory.lightning.internal.generator.BytecodeMarshallerGenerator.java

License:Apache License

private void createConstructor(ClassWriter cw, String className, List<PropertyDescriptor> propertyDescriptors) {
    MethodVisitor mv = cw.visitMethod(ACC_PUBLIC, "<init>", MARSHALLER_CONSTRUCTOR_SIGNATURE, null, null);
    mv.visitCode();/*from   ww w .  ja  va2  s  . c  o m*/

    // Load this
    mv.visitVarInsn(ALOAD, 0);

    // Load first parameter type (Class)
    mv.visitVarInsn(ALOAD, 1);

    // Load second parameter type (Map)
    mv.visitVarInsn(ALOAD, 2);

    // Load third parameter type (ClassDescriptorAwaySerializer)
    mv.visitVarInsn(ALOAD, 3);

    // Load fourth parameter type (ObjenesisSerializer)
    mv.visitVarInsn(ALOAD, 4);

    // Call super(Class, Map)
    mv.visitMethodInsn(INVOKESPECIAL, SUPER_CLASS_INTERNAL_TYPE, "<init>",
            MARSHALLER_SUPER_CONSTRUCTOR_SIGNATURE);

    // Fill fields with marshallers
    for (int i = 0; i < propertyDescriptors.size(); i++) {
        PropertyDescriptor propertyDescriptor = propertyDescriptors.get(i);
        String fieldName = toFinalFieldName("marshaller", propertyDescriptor);
        mv.visitVarInsn(ALOAD, 0);
        mv.visitVarInsn(ALOAD, 0);

        // Load property type
        mv.visitVarInsn(ALOAD, 5);
        mv.visitIntInsn(BIPUSH, i);
        mv.visitMethodInsn(INVOKEINTERFACE, LIST_CLASS_INTERNAL_TYPE, "get", "(I)Ljava/lang/Object;");

        // Store PropertyDescriptor
        mv.visitTypeInsn(CHECKCAST, PROPERTYDESCRIPTOR_CLASS_INTERNAL_TYPE);
        mv.visitFieldInsn(PUTFIELD, className, toFinalFieldName("descriptor", propertyDescriptor),
                PROPERTYDESCRIPTOR_CLASS_DESCRIPTOR);

        if (propertyDescriptor.getType().isArray()
                && !propertyDescriptor.getType().getComponentType().isPrimitive()) {
            Label labelNonNull = new Label();

            // Get type from PropertyAccessor
            mv.visitVarInsn(ALOAD, 0);
            mv.visitFieldInsn(GETFIELD, className, toFinalFieldName("descriptor", propertyDescriptor),
                    PROPERTYDESCRIPTOR_CLASS_DESCRIPTOR);
            mv.visitMethodInsn(INVOKEINTERFACE, PROPERTYDESCRIPTOR_CLASS_INTERNAL_TYPE, "getType",
                    "()Ljava/lang/Class;");

            // Get array component type
            mv.visitMethodInsn(INVOKEVIRTUAL, CLASS_CLASS_INTERNAL_TYPE, "getComponentType",
                    CLASS_GET_COMPONENT_TYPE);
            mv.visitVarInsn(ASTORE, 9);

            // Generate cheating PropertyDescriptor for component type
            mv.visitVarInsn(ALOAD, 0);
            mv.visitTypeInsn(NEW, CHEATINGPROPERTYDESCRIPTOR_CLASS_INTERNAL_TYPE);
            mv.visitInsn(DUP);
            mv.visitLdcInsn(propertyDescriptor.getPropertyName() + "Element");
            mv.visitVarInsn(ALOAD, 9);
            mv.visitInsn(ACONST_NULL);
            mv.visitMethodInsn(INVOKESPECIAL, CHEATINGPROPERTYDESCRIPTOR_CLASS_INTERNAL_TYPE, "<init>",
                    CHEATINGPROPERTYDESCRIPTOR_CONSTRUCTOR);
            mv.visitFieldInsn(PUTFIELD, className, toFinalFieldName("component", propertyDescriptor),
                    CHEATINGPROPERTYDESCRIPTOR_CLASS_DESCRIPTOR);

            // Search marshaller by using interal ones
            mv.visitVarInsn(ALOAD, 6);
            mv.visitVarInsn(ALOAD, 9);
            mv.visitInsn(ACONST_NULL);
            mv.visitMethodInsn(INVOKEINTERFACE, MARSHALLERSTRATEGY_CLASS_INTERNAL_TYPE, "getMarshaller",
                    MARSHALLERSTRATEGY_GET_MARSHALLER_SIGNATURE);
            mv.visitVarInsn(ASTORE, 8);
            mv.visitVarInsn(ALOAD, 8);

            // Search marshaller for property type
            mv.visitJumpInsn(IFNONNULL, labelNonNull);
            mv.visitVarInsn(ALOAD, 0);
            mv.visitVarInsn(ALOAD, 0);
            mv.visitFieldInsn(GETFIELD, className, toFinalFieldName("component", propertyDescriptor),
                    CHEATINGPROPERTYDESCRIPTOR_CLASS_DESCRIPTOR);
            mv.visitMethodInsn(INVOKEVIRTUAL, SUPER_CLASS_INTERNAL_TYPE, "findMarshaller",
                    MARSHALLER_FIND_MARSHALLER_SIGNATURE);
            mv.visitVarInsn(ASTORE, 8);

            // Save marshaller to field
            mv.visitLabel(labelNonNull);
            mv.visitVarInsn(ALOAD, 0);
            mv.visitVarInsn(ALOAD, 8);
            mv.visitFieldInsn(PUTFIELD, className, toFinalFieldName("marshaller", propertyDescriptor),
                    MARSHALLER_CLASS_DESCRIPTOR);
        } else {
            // Check if marshaller is defined
            mv.visitVarInsn(ALOAD, 0);
            mv.visitVarInsn(ALOAD, 0);
            mv.visitVarInsn(ALOAD, 0);
            mv.visitFieldInsn(GETFIELD, className, toFinalFieldName("descriptor", propertyDescriptor),
                    PROPERTYDESCRIPTOR_CLASS_DESCRIPTOR);
            mv.visitMethodInsn(INVOKEVIRTUAL, SUPER_CLASS_INTERNAL_TYPE, "findMarshaller",
                    MARSHALLER_FIND_MARSHALLER_SIGNATURE);
            mv.visitFieldInsn(PUTFIELD, className, fieldName, MARSHALLER_CLASS_DESCRIPTOR);
        }

        // Load this to method stack
        mv.visitVarInsn(ALOAD, 0);
        mv.visitInsn(DUP);

        // Load property accessor
        mv.visitFieldInsn(GETFIELD, className, toFinalFieldName("descriptor", propertyDescriptor),
                PROPERTYDESCRIPTOR_CLASS_DESCRIPTOR);
        mv.visitMethodInsn(INVOKEINTERFACE, PROPERTYDESCRIPTOR_CLASS_INTERNAL_TYPE, "getPropertyAccessor",
                PROPERTY_DESCRIPTOR_GET_PROPERTYACCESSOR_SIGNATURE);

        // Save PropertyAccessor to field
        mv.visitFieldInsn(PUTFIELD, className, toFinalFieldName("accessor", propertyDescriptor),
                PROPERTYACCESSOR_CLASS_DESCRIPTOR);
    }

    mv.visitInsn(RETURN);
    mv.visitMaxs(-1, 12);
    mv.visitEnd();
}

---

From source file:org.ballerinalang.nativeimpl.jvm.methodvisitor.VisitIntInsn.java

License:Open Source License

public static void visitIntInsn(Strand strand, ObjectValue oMv, long opCode, long operand) {
    MethodVisitor mv = ASMUtil.getRefArgumentNativeData(oMv);
    mv.visitIntInsn((int) opCode, (int) operand);
}

---

From source file:org.cacheonix.impl.transformer.CacheonixMethodGenerator.java

License:LGPL

/**
 * Generates the byte instructions for the Aggregate key generated to be used by the Cacheonix cache
 *
 * @param mv              MethodVisitor that writes byte instructions
 * @param types           array of Method arguments Types
 * @param stackFrame      Contains the offset for the local variables in the generated method
 * @param list/*from  w w  w . ja v  a2s.co  m*/
 * @param strSyntheticKey
 */
private static void generateKeyAggregationSequence(final MethodVisitor mv, final Type[] types,
        final LocalStackUtil stackFrame, final String strSyntheticKey, final List<Integer> list) {

    final String strGeneratorKey = "org/cacheonix/impl/transformer/GeneratedKey";

    mv.visitTypeInsn(NEW, strGeneratorKey);

    mv.visitInsn(DUP);

    int keyElements = 1; //For Synthetic key
    keyElements += list.size();

    mv.visitIntInsn(BIPUSH, keyElements);
    mv.visitTypeInsn(ANEWARRAY, "java/lang/Object");

    //Add Synthetic key to the GeneratorKey
    mv.visitInsn(DUP);
    mv.visitIntInsn(BIPUSH, 0);

    final Type tpString = Type.getType(String.class);

    mv.visitLdcInsn(strSyntheticKey);

    // Call function
    String argDescriptor = getKeyGenArgumentDescrStr(tpString);
    mv.visitMethodInsn(INVOKESTATIC, strGeneratorKey, "addKeyElement", argDescriptor);
    // Push (store) result to the stack
    mv.visitInsn(AASTORE);

    for (int i = 0, j = 1; i < list.size(); ++i, ++j) {
        //Get the argument index which is marked with @CacheKey
        final int argTypeIndex = list.get(i).intValue();

        mv.visitInsn(DUP);
        mv.visitIntInsn(BIPUSH, j);

        final ByteInstruction bi = ByteInstruction.getByteInstructionAt(argTypeIndex, types);
        mv.visitVarInsn(bi.code, bi.stackIndex);

        // Call function
        argDescriptor = getKeyGenArgumentDescrStr(types[argTypeIndex]);
        mv.visitMethodInsn(INVOKESTATIC, strGeneratorKey, "addKeyElement", argDescriptor);
        // Push (store) result to the stack
        mv.visitInsn(AASTORE);
        // ---

    }

    // Call Constructor function with array of arguments
    mv.visitMethodInsn(INVOKESPECIAL, strGeneratorKey, "<init>", "([Ljava/lang/Object;)V");
    // Store new GeneratedKey to Local ()
    mv.visitVarInsn(ASTORE, stackFrame.getKeyGenLocalStackPos());

}

---

From source file:org.chromium.bytecode.CustomResourcesClassAdapter.java

License:Open Source License

/**
 * Generates://from ww w.j a  v a 2s  .  c o  m
 *
 * <pre>
 * public Context createConfigurationContext(Configuration configuration) {
 *   // createConfigurationContext does not exist before API level 17.
 *   if (Build.VERSION.SDK_INT < 17) return null;
 *   if (!BuildHooksAndroid.isEnabled()) return super.createConfigurationContext(configuration);
 *   return BuildHooksAndroid.createConfigurationContext(
 *          super.createConfigurationContext(configuration));
 * }
 * </pre>
 * }
 */
private void delegateCreateConfigurationContext() {
    String methodName = "createConfigurationContext";
    String methodDescriptor = TypeUtils.getMethodDescriptor(CONTEXT, CONFIGURATION);
    MethodVisitor mv = super.visitMethod(ACC_PUBLIC, methodName, methodDescriptor, null, null);
    mv.visitCode();
    mv.visitFieldInsn(GETSTATIC, "android/os/Build$VERSION", "SDK_INT", INT);
    mv.visitIntInsn(BIPUSH, 17);
    Label l0 = new Label();
    mv.visitJumpInsn(IF_ICMPGE, l0);
    mv.visitInsn(ACONST_NULL);
    mv.visitInsn(ARETURN);
    mv.visitLabel(l0);
    mv.visitFrame(Opcodes.F_SAME, 0, null, 0, null);
    mv.visitMethodInsn(INVOKESTATIC, BUILD_HOOKS_ANDROID, IS_ENABLED_METHOD, IS_ENABLED_DESCRIPTOR, false);
    Label l1 = new Label();
    mv.visitJumpInsn(IFNE, l1);
    mv.visitVarInsn(ALOAD, 0);
    mv.visitVarInsn(ALOAD, 1);
    mv.visitMethodInsn(INVOKESPECIAL, mSuperClassName, methodName, methodDescriptor, false);
    mv.visitInsn(ARETURN);
    mv.visitLabel(l1);
    mv.visitFrame(Opcodes.F_SAME, 0, null, 0, null);
    mv.visitVarInsn(ALOAD, 0);
    mv.visitVarInsn(ALOAD, 1);
    mv.visitMethodInsn(INVOKESPECIAL, mSuperClassName, methodName, methodDescriptor, false);
    mv.visitMethodInsn(INVOKESTATIC, BUILD_HOOKS_ANDROID, methodName,
            TypeUtils.getMethodDescriptor(CONTEXT, CONTEXT), false);
    mv.visitInsn(ARETURN);
    mv.visitMaxs(2, 2);
    mv.visitEnd();
}

---

From source file:org.codehaus.aspectwerkz.transform.inlining.AsmHelper.java

License:Open Source License

/**
 * Creates and adds the correct parameter index for integer types.
 *
 * @param cv/*  w  w w  .j  a v  a2  s . c  o m*/
 * @param index
 */
public static void loadIntegerConstant(final MethodVisitor cv, final int index) {
    switch (index) {
    case 0:
        cv.visitInsn(ICONST_0);
        break;
    case 1:
        cv.visitInsn(ICONST_1);
        break;
    case 2:
        cv.visitInsn(ICONST_2);
        break;
    case 3:
        cv.visitInsn(ICONST_3);
        break;
    case 4:
        cv.visitInsn(ICONST_4);
        break;
    case 5:
        cv.visitInsn(ICONST_5);
        break;
    default:
        cv.visitIntInsn(BIPUSH, index);
        break;
    }
}

---

From source file:org.codehaus.groovy.classgen.asm.BytecodeHelper.java

License:Apache License

public static void pushConstant(MethodVisitor mv, int value) {
    switch (value) {
    case 0:// ww  w . j  a va  2s . c  o  m
        mv.visitInsn(ICONST_0);
        break;
    case 1:
        mv.visitInsn(ICONST_1);
        break;
    case 2:
        mv.visitInsn(ICONST_2);
        break;
    case 3:
        mv.visitInsn(ICONST_3);
        break;
    case 4:
        mv.visitInsn(ICONST_4);
        break;
    case 5:
        mv.visitInsn(ICONST_5);
        break;
    default:
        if (value >= Byte.MIN_VALUE && value <= Byte.MAX_VALUE) {
            mv.visitIntInsn(BIPUSH, value);
        } else if (value >= Short.MIN_VALUE && value <= Short.MAX_VALUE) {
            mv.visitIntInsn(SIPUSH, value);
        } else {
            mv.visitLdcInsn(value);
        }
    }
}

---

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