Example usage for org.objectweb.asm Opcodes INVOKEVIRTUAL

List of usage examples for org.objectweb.asm Opcodes INVOKEVIRTUAL

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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:com.nginious.http.serialize.JsonSerializerCreator.java

License:Apache License

/**
 * Creates bytecode for serializing a bean property which is in itself a serializable bean as defined in the class description.
 * /* w w  w.j  a  v a  2s . c o  m*/
 * @param visitor method visitor used for creating bytecode
 * @param returnMethodName binary name of get method in bean that returns serializable bean
 * @param returnType class of serializable bean
 * @param intBeanClazzName binary class name of bean
 */
private void createBeanSerializationCode(MethodVisitor visitor, String returnMethodName, String propertyName,
        Class<?> returnType, String intBeanClazzName) {
    String intReturnClazzName = Serialization.createInternalClassName(returnType);
    visitor.visitVarInsn(Opcodes.ALOAD, 0);
    visitor.visitMethodInsn(Opcodes.INVOKEVIRTUAL, "com/nginious/http/serialize/JsonSerializer",
            "getSerializerFactory", "()Lcom/nginious/http/serialize/SerializerFactoryImpl;");
    visitor.visitLdcInsn(returnType.getName());
    visitor.visitMethodInsn(Opcodes.INVOKESTATIC, "java/lang/Class", "forName",
            "(Ljava/lang/String;)Ljava/lang/Class;");

    visitor.visitMethodInsn(Opcodes.INVOKEVIRTUAL, "com/nginious/http/serialize/SerializerFactoryImpl",
            "createJsonSerializer", "(Ljava/lang/Class;)Lcom/nginious/http/serialize/JsonSerializer;");
    visitor.visitVarInsn(Opcodes.ASTORE, 4);

    visitor.visitVarInsn(Opcodes.ALOAD, 4);
    visitor.visitVarInsn(Opcodes.ALOAD, 3);
    visitor.visitMethodInsn(Opcodes.INVOKEVIRTUAL, intBeanClazzName, returnMethodName,
            "()L" + intReturnClazzName + ";");
    visitor.visitMethodInsn(Opcodes.INVOKEVIRTUAL, "com/nginious/http/serialize/JsonSerializer", "serialize",
            "(Ljava/lang/Object;)Lorg/json/JSONObject;");
    visitor.visitVarInsn(Opcodes.ASTORE, 4);

    visitor.visitVarInsn(Opcodes.ALOAD, 1);
    visitor.visitLdcInsn(propertyName);
    visitor.visitVarInsn(Opcodes.ALOAD, 4);
    visitor.visitMethodInsn(Opcodes.INVOKEVIRTUAL, "org/json/JSONObject", "put",
            "(Ljava/lang/String;Ljava/lang/Object;)Lorg/json/JSONObject;");
}

From source file:com.nginious.http.serialize.JsonSerializerCreator.java

License:Apache License

/**
 * Creates bytecode for serializing property matching the specified bean method name. The generated bytecode calls the
 * appropriate serialization method in the class {@link JsonSerializer} depending on the specified method type.
 * //ww  w .  ja v a 2  s  .co m
 * @param visitor method visitor for generating bytecode
 * @param clazzName binary name of serializer class being generated
 * @param methodName binary name of method in class {@link JsonSerializer} used for serializing property
 * @param methodType binary type for method in class {@link JsonSerializer} used for serializing property
 * @param beanType binary return type of get method in bean
 * @param beanClazzName binary name of bean class
 * @param beanMethodName binary name of get method in bean for getting method
 */
private void createPropertySerializationCode(MethodVisitor visitor, String clazzName, String methodName,
        String methodType, String beanType, String beanClazzName, String beanMethodName, String propertyName) {
    visitor.visitVarInsn(Opcodes.ALOAD, 0);
    visitor.visitVarInsn(Opcodes.ALOAD, 1);
    visitor.visitLdcInsn(propertyName);
    visitor.visitVarInsn(Opcodes.ALOAD, 3);
    visitor.visitMethodInsn(Opcodes.INVOKEVIRTUAL, beanClazzName, beanMethodName, "()" + beanType);
    visitor.visitMethodInsn(Opcodes.INVOKEVIRTUAL, clazzName, methodName,
            "(Lorg/json/JSONObject;Ljava/lang/String;" + methodType + ")V");
}

From source file:com.nginious.http.serialize.QueryDeserializerCreator.java

License:Apache License

/**
 * Creates bytecode for deserializing property matching the specified bean method name. The generated bytecode calls the
 * appropriate deserialization method in the class {@link QueryDeserializer} depending on the specified method type.
 * Then generated bytecode that calls the corresponding get method in the bean class. 
 * //from  w  w  w .  ja  v a2  s . co  m
 * @param visitor method visitor for writing bytecode
 * @param clazzName binary name of class being generated
 * @param methodName binary name of method in class {@link QueryDeserializer} used for deserializing property
 * @param methodType binary type of value returned by called deserialization method in {@link QueryDeserializer}
 * @param beanType binary type for argument in bean method for setting property
 * @param beanClazzName binary class name of bean for which the deserializer class is being generated
 * @param beanMethodName binary name of method in bean class for setting property
 */
private void createPropertyDeserializationCode(MethodVisitor visitor, String clazzName, String methodName,
        String methodType, String beanType, String beanClazzName, String beanMethodName) {
    String propertyName = createParameterNameFromMethodName(beanMethodName);
    visitor.visitVarInsn(Opcodes.ALOAD, 3);
    visitor.visitVarInsn(Opcodes.ALOAD, 0);
    visitor.visitVarInsn(Opcodes.ALOAD, 1);
    visitor.visitLdcInsn(propertyName);
    visitor.visitMethodInsn(Opcodes.INVOKEVIRTUAL, clazzName, methodName,
            "(Lcom/nginious/http/HttpRequest;Ljava/lang/String;)" + methodType);
    visitor.visitMethodInsn(Opcodes.INVOKEVIRTUAL, beanClazzName, beanMethodName, "(" + beanType + ")V");
}

From source file:com.nginious.http.serialize.XmlDeserializerCreator.java

License:Apache License

/**
 * Creates bytecode for deserializing property matching the specified bean method name. The generated bytecode calls the
 * appropriate deserialization method in the class {@link XmlDeserializer} depending on the specified method type.
 * Then generated bytecode that calls the corresponding set method in the bean class. 
 * /*from  w w  w .ja v a  2 s . c  o m*/
 * @param visitor method visitor for writing bytecode
 * @param clazzName binary name of class being generated
 * @param methodName binary name of method in class {@link XmlDeserializer} used for deserializing property
 * @param methodType binary type of value returned by called deserialization method in {@link XmlDeserializer}
 * @param beanType binary type for argument in bean method for setting property
 * @param beanClazzName binary class name of bean for which the deserializer class is being generated
 * @param beanMethodName binary name of method in bean class for setting property
 */
private void createPropertyDeserializationCode(MethodVisitor visitor, String clazzName, String methodName,
        String methodType, String beanType, String beanClazzName, String beanMethodName) {
    String propertyName = convertToXmlName(beanMethodName);
    visitor.visitVarInsn(Opcodes.ALOAD, 3);
    visitor.visitVarInsn(Opcodes.ALOAD, 0);
    visitor.visitVarInsn(Opcodes.ALOAD, 1);
    visitor.visitLdcInsn(propertyName);
    visitor.visitMethodInsn(Opcodes.INVOKEVIRTUAL, clazzName, methodName,
            "(Ljava/util/HashMap;Ljava/lang/String;)" + methodType);
    visitor.visitMethodInsn(Opcodes.INVOKEVIRTUAL, beanClazzName, beanMethodName, "(" + beanType + ")V");
}

From source file:com.nginious.http.serialize.XmlSerializerCreator.java

License:Apache License

/**
 * Creates bytecode for serializing a bean property which returns a collection of opaque objects.
 * //from   w  w w.  ja v a 2s  .c om
 * @param visitor method visitor used for creating bytecode
 * @param intBeanClazzName binary name of bean
 * @param methodName binary name of get method in bean
 * @param returnType return type of get method in bean
 */
private void createObjectCollectionSerializationCode(MethodVisitor visitor, String intBeanClazzName,
        String methodName, String propertyName, Class<?> returnType) {
    visitor.visitTypeInsn(Opcodes.NEW, "com/nginious/http/serialize/XmlObjectCollectionSerializer");
    visitor.visitInsn(Opcodes.DUP);
    visitor.visitLdcInsn(propertyName);
    visitor.visitMethodInsn(Opcodes.INVOKESPECIAL, "com/nginious/http/serialize/XmlObjectCollectionSerializer",
            "<init>", "(Ljava/lang/String;)V");
    visitor.visitVarInsn(Opcodes.ASTORE, 4);

    visitor.visitVarInsn(Opcodes.ALOAD, 4);
    visitor.visitVarInsn(Opcodes.ALOAD, 1);
    String intReturnClazzName = returnType.getName().replace('.', '/');
    visitor.visitVarInsn(Opcodes.ALOAD, 3);
    visitor.visitMethodInsn(Opcodes.INVOKEVIRTUAL, intBeanClazzName, methodName,
            "()L" + intReturnClazzName + ";");

    visitor.visitMethodInsn(Opcodes.INVOKEVIRTUAL, "com/nginious/http/serialize/XmlObjectCollectionSerializer",
            "serialize", "(Ljavax/xml/transform/sax/TransformerHandler;Ljava/util/Collection;)V");
}

From source file:com.nginious.http.serialize.XmlSerializerCreator.java

License:Apache License

/**
 * Creates bytecode for serializing a bean property which returns a collection of beans that are serializable. Bean serializability
 * is determined as described in the class description.
 * /*from ww  w  .j a  v  a2  s  .  c o m*/
 * @param visitor method visitor used for creating bytecode
 * @param intBeanClazzName binary class name of bean
 * @param methodName binary name of get method in bean returning collection
 * @param returnType return type of get method in bean
 * @param collectionBeanType class of serializable bean found in collection
 */
private void createBeanCollectionSerializationCode(MethodVisitor visitor, String intBeanClazzName,
        String methodName, String propertyName, Class<?> returnType, Class<?> collectionBeanType) {
    visitor.visitVarInsn(Opcodes.ALOAD, 0);
    visitor.visitMethodInsn(Opcodes.INVOKEVIRTUAL, "com/nginious/http/serialize/XmlSerializer",
            "getSerializerFactory", "()Lcom/nginious/http/serialize/SerializerFactoryImpl;");
    visitor.visitLdcInsn(collectionBeanType.getName());
    visitor.visitMethodInsn(Opcodes.INVOKESTATIC, "java/lang/Class", "forName",
            "(Ljava/lang/String;)Ljava/lang/Class;");
    visitor.visitMethodInsn(Opcodes.INVOKEVIRTUAL, "com/nginious/http/serialize/SerializerFactoryImpl",
            "createXmlSerializer", "(Ljava/lang/Class;)Lcom/nginious/http/serialize/XmlSerializer;");
    visitor.visitVarInsn(Opcodes.ASTORE, 4);

    visitor.visitTypeInsn(Opcodes.NEW, "com/nginious/http/serialize/XmlBeanCollectionSerializer");
    visitor.visitInsn(Opcodes.DUP);
    visitor.visitLdcInsn(propertyName);
    visitor.visitVarInsn(Opcodes.ALOAD, 4);
    visitor.visitMethodInsn(Opcodes.INVOKESPECIAL, "com/nginious/http/serialize/XmlBeanCollectionSerializer",
            "<init>", "(Ljava/lang/String;Lcom/nginious/http/serialize/XmlSerializer;)V");
    visitor.visitVarInsn(Opcodes.ASTORE, 5);

    visitor.visitVarInsn(Opcodes.ALOAD, 5);
    visitor.visitVarInsn(Opcodes.ALOAD, 1);

    String intReturnClazzName = returnType.getName().replace('.', '/');
    visitor.visitVarInsn(Opcodes.ALOAD, 3);
    visitor.visitMethodInsn(Opcodes.INVOKEVIRTUAL, intBeanClazzName, methodName,
            "()L" + intReturnClazzName + ";");

    visitor.visitMethodInsn(Opcodes.INVOKEVIRTUAL, "com/nginious/http/serialize/XmlBeanCollectionSerializer",
            "serialize", "(Ljavax/xml/transform/sax/TransformerHandler;Ljava/util/Collection;)V");
}

From source file:com.nginious.http.serialize.XmlSerializerCreator.java

License:Apache License

/**
 * Creates bytecode for serializing a bean property which is in itself a serializable bean as defined in the class description.
 * /*from   w  w  w. j a v  a  2s .c  o m*/
 * @param visitor method visitor used for creating bytecode
 * @param returnMethodName binary name of get method in bean that returns serializable bean
 * @param returnType class of serializable bean
 * @param intBeanClazzName binary class name of bean
 */
private void createBeanSerializationCode(MethodVisitor visitor, String returnMethodName, String propertyName,
        Class<?> returnType, String intBeanClazzName) {
    String intReturnClazzName = Serialization.createInternalClassName(returnType);
    visitor.visitVarInsn(Opcodes.ALOAD, 0);
    visitor.visitMethodInsn(Opcodes.INVOKEVIRTUAL, "com/nginious/http/serialize/XmlSerializer",
            "getSerializerFactory", "()Lcom/nginious/http/serialize/SerializerFactoryImpl;");
    visitor.visitLdcInsn(returnType.getName());
    visitor.visitMethodInsn(Opcodes.INVOKESTATIC, "java/lang/Class", "forName",
            "(Ljava/lang/String;)Ljava/lang/Class;");

    visitor.visitMethodInsn(Opcodes.INVOKEVIRTUAL, "com/nginious/http/serialize/SerializerFactoryImpl",
            "createXmlSerializer", "(Ljava/lang/Class;)Lcom/nginious/http/serialize/XmlSerializer;");
    visitor.visitVarInsn(Opcodes.ASTORE, 4);

    visitor.visitVarInsn(Opcodes.ALOAD, 4);
    visitor.visitVarInsn(Opcodes.ALOAD, 1);
    visitor.visitLdcInsn(convertToXmlName(propertyName));
    visitor.visitVarInsn(Opcodes.ALOAD, 3);
    visitor.visitMethodInsn(Opcodes.INVOKEVIRTUAL, intBeanClazzName, returnMethodName,
            "()L" + intReturnClazzName + ";");
    visitor.visitMethodInsn(Opcodes.INVOKEVIRTUAL, "com/nginious/http/serialize/XmlSerializer", "serialize",
            "(Ljavax/xml/transform/sax/TransformerHandler;Ljava/lang/String;Ljava/lang/Object;)V");
    visitor.visitVarInsn(Opcodes.ASTORE, 4);
}

From source file:com.nginious.http.serialize.XmlSerializerCreator.java

License:Apache License

/**
 * Creates bytecode for serializing property matching the specified bean method name. The generated bytecode calls the
 * appropriate serialization method in the class {@link XmlSerializer} depending on the specified method type.
 * /* w  w  w .  j a  va 2  s .  com*/
 * @param visitor method visitor for generating bytecode
 * @param clazzName binary name of serializer class being generated
 * @param methodName binary name of method in class {@link XmlSerializer} used for serializing property
 * @param propertyName name of XML element
 * @param methodType binary type for method in class {@link XmlSerializer} used for serializing property
 * @param beanType binary return type of get method in bean
 * @param beanClazzName binary name of bean class
 * @param beanMethodName binary name of get method in bean for getting method
 */
private void createPropertySerializationCode(MethodVisitor visitor, String clazzName, String methodName,
        String methodType, String beanType, String beanClazzName, String beanMethodName, String propertyName) {
    visitor.visitVarInsn(Opcodes.ALOAD, 0);
    visitor.visitVarInsn(Opcodes.ALOAD, 1);
    visitor.visitLdcInsn(propertyName);
    visitor.visitVarInsn(Opcodes.ALOAD, 3);
    visitor.visitMethodInsn(Opcodes.INVOKEVIRTUAL, beanClazzName, beanMethodName, "()" + beanType);
    visitor.visitMethodInsn(Opcodes.INVOKEVIRTUAL, clazzName, methodName,
            "(Ljavax/xml/transform/sax/TransformerHandler;Ljava/lang/String;" + methodType + ")V");
}

From source file:com.nginious.http.xsp.DocumentPart.java

License:Apache License

/**
 * Creates bytecode for this document tag part using the specified class writer and method visitor.
 * // ww  w  .j  a va 2 s . c o  m
 * @param intClassName the binary class name of the class being created
 * @param writer the class writer
 * @param visitor the method visitor
 * @throws XspException if unable to create bytecode
 */
void compile(String intClassName, ClassWriter writer, MethodVisitor visitor) throws XspException {
    // 0 = this, 1 = HttpRequest, 2 = HttpResponse, 3 = StringBuffer

    // StringBuffer buffer = new StringBuffer();
    visitor.visitTypeInsn(Opcodes.NEW, "java/lang/StringBuffer");
    visitor.visitInsn(Opcodes.DUP);
    visitor.visitMethodInsn(Opcodes.INVOKESPECIAL, "java/lang/StringBuffer", "<init>", "()V");
    visitor.visitVarInsn(Opcodes.ASTORE, 3);

    for (XspPart part : contentParts) {
        part.compile(intClassName, writer, visitor);
    }

    // response.setContentLength(buffer.length());
    visitor.visitVarInsn(Opcodes.ALOAD, 2);
    visitor.visitVarInsn(Opcodes.ALOAD, 3);
    visitor.visitMethodInsn(Opcodes.INVOKEVIRTUAL, "java/lang/StringBuffer", "length", "()I");
    visitor.visitMethodInsn(Opcodes.INVOKEINTERFACE, "com/nginious/http/HttpResponse", "setContentLength",
            "(I)V");

    // response.addHeader(contentType);
    String contentType = getMetaContent("Content-Type");

    if (contentType == null) {
        contentType = "application/unknown";
    }

    visitor.visitVarInsn(Opcodes.ALOAD, 2);
    visitor.visitLdcInsn("Content-Type");
    visitor.visitLdcInsn(contentType);
    visitor.visitMethodInsn(Opcodes.INVOKEINTERFACE, "com/nginious/http/HttpResponse", "addHeader",
            "(Ljava/lang/String;Ljava/lang/String;)V");

    // PrintWriter writer = response.getWriter();
    // writer.print(buffer.toString());
    visitor.visitVarInsn(Opcodes.ALOAD, 2);
    visitor.visitMethodInsn(Opcodes.INVOKEINTERFACE, "com/nginious/http/HttpResponse", "getWriter",
            "()Ljava/io/PrintWriter;");
    visitor.visitVarInsn(Opcodes.ALOAD, 3);
    visitor.visitMethodInsn(Opcodes.INVOKEVIRTUAL, "java/lang/StringBuffer", "toString",
            "()Ljava/lang/String;");
    visitor.visitMethodInsn(Opcodes.INVOKEVIRTUAL, "java/io/PrintWriter", "print", "(Ljava/lang/String;)V");
}

From source file:com.nginious.http.xsp.expr.AttributeValue.java

License:Apache License

/**
 * Creates bytecode for evaluating this attribute value. The bytecode is created using the
 * specified method visitor and creates a result of specified type.
 * //from  ww w.  j av  a  2 s.co m
 * @param visitor the method visitor
 * @param type the type
 */
void compile(MethodVisitor visitor, Type type) {
    visitor.visitLdcInsn(this.name);
    visitor.visitMethodInsn(Opcodes.INVOKESTATIC, "com/nginious/http/xsp/expr/Expression", "getVariable",
            "(Ljava/lang/String;)Ljava/lang/Object;");

    if (type != Type.ANY) {
        visitor.visitInsn(Opcodes.DUP);
    }

    if (type == Type.STRING) {
        Label nullLabel = new Label();
        Label notNullLabel = new Label();

        visitor.visitJumpInsn(Opcodes.IFNULL, nullLabel);

        visitor.visitMethodInsn(Opcodes.INVOKEVIRTUAL, "java/lang/Object", "toString", "()Ljava/lang/String;");
        visitor.visitJumpInsn(Opcodes.GOTO, notNullLabel);

        visitor.visitLabel(nullLabel);
        visitor.visitInsn(Opcodes.POP);
        visitor.visitInsn(Opcodes.ACONST_NULL);

        visitor.visitLabel(notNullLabel);
    } else if (type == Type.INT) {
        Label nullLabel = new Label();
        Label notNullLabel = new Label();

        visitor.visitJumpInsn(Opcodes.IFNULL, nullLabel);

        visitor.visitMethodInsn(Opcodes.INVOKEVIRTUAL, "java/lang/Object", "toString", "()Ljava/lang/String;");
        visitor.visitMethodInsn(Opcodes.INVOKESTATIC, "java/lang/Integer", "parseInt", "(Ljava/lang/String;)I");
        visitor.visitJumpInsn(Opcodes.GOTO, notNullLabel);

        visitor.visitLabel(nullLabel);
        visitor.visitInsn(Opcodes.POP);
        visitor.visitLdcInsn(0);

        visitor.visitLabel(notNullLabel);
    } else if (type == Type.DOUBLE) {
        Label nullLabel = new Label();
        Label notNullLabel = new Label();

        visitor.visitJumpInsn(Opcodes.IFNULL, nullLabel);

        visitor.visitMethodInsn(Opcodes.INVOKEVIRTUAL, "java/lang/Object", "toString", "()Ljava/lang/String;");
        visitor.visitMethodInsn(Opcodes.INVOKESTATIC, "java/lang/Double", "parseDouble",
                "(Ljava/lang/String;)D");
        visitor.visitJumpInsn(Opcodes.GOTO, notNullLabel);

        visitor.visitLabel(nullLabel);
        visitor.visitInsn(Opcodes.POP);
        visitor.visitLdcInsn(0.0d);

        visitor.visitLabel(notNullLabel);
    }
}