Example usage for org.objectweb.asm Opcodes ASTORE

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

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

Prototype

int ASTORE

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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.
 * //  ww w  .  ja va2 s . co  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 which implements the {@link JsonSerializer#serializeProperties(org.json.JSONObject, Object)}
 * method for the serializer class being created.
 * /*w ww  . j a  va  2s. c o m*/
 * @param writer class byte code writer
 * @param intBeanClazzName binary name of serializer class being generated
 * @return a method visitor for writing bytecode inside the generated method
 */
private MethodVisitor createSerializeMethod(ClassWriter writer, String intBeanClazzName) {
    String[] exceptions = { "com/nginious/serialize/SerializerException" };
    MethodVisitor visitor = writer.visitMethod(Opcodes.ACC_PUBLIC, "serializeProperties",
            "(Lorg/json/JSONObject;Ljava/lang/Object;)V", null, exceptions);
    visitor.visitCode();

    Label label = new Label();
    visitor.visitVarInsn(Opcodes.ALOAD, 2);
    visitor.visitJumpInsn(Opcodes.IFNONNULL, label);
    visitor.visitInsn(Opcodes.RETURN);
    visitor.visitLabel(label);
    visitor.visitVarInsn(Opcodes.ALOAD, 2);
    visitor.visitTypeInsn(Opcodes.CHECKCAST, intBeanClazzName);
    visitor.visitIntInsn(Opcodes.ASTORE, 3);

    return visitor;
}

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

License:Apache License

/**
 * Creates bytecode which implements the {@link QueryDeserializer#deserialize(se.netdigital.http.HttpRequest)} method for
 * the deserializer class being created.
 * //from  www  . ja  v a 2 s. c  om
 * @param writer class byte code writer
 * @param intBeanClazzName name of deserializer class being generated
 * @return a method visitor for writing bytecode inside the generated method
 */
private MethodVisitor createDeserializeMethod(ClassWriter writer, String intBeanClazzName) {
    String[] exceptions = { "com/nginious/serialize/SerializerException" };
    MethodVisitor visitor = writer.visitMethod(Opcodes.ACC_PUBLIC, "deserialize",
            "(Lcom/nginious/http/HttpRequest;)Ljava/lang/Object;", null, exceptions);
    visitor.visitCode();

    visitor.visitTypeInsn(Opcodes.NEW, intBeanClazzName);
    visitor.visitInsn(Opcodes.DUP);
    visitor.visitMethodInsn(Opcodes.INVOKESPECIAL, intBeanClazzName, "<init>", "()V");
    visitor.visitVarInsn(Opcodes.ASTORE, 3);
    return visitor;
}

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

License:Apache License

/**
 * Creates bytecode which implements the {@link XmlDeserializer#deserialize(java.util.HashMap)} method for
 * the deserializer class being created.
 * /*  w w  w .j av a2 s  . co m*/
 * @param writer class byte code writer
 * @param intBeanClazzName name of deserializer class being generated
 * @return a method visitor for writing bytecode inside the generated method
 */
private MethodVisitor createDeserializeMethod(ClassWriter writer, String intBeanClazzName) {
    String[] exceptions = { "com/nginious/http/serialize/SerializerException" };
    MethodVisitor visitor = writer.visitMethod(Opcodes.ACC_PUBLIC, "deserialize",
            "(Ljava/util/HashMap;)Ljava/lang/Object;", null, exceptions);
    visitor.visitCode();

    visitor.visitTypeInsn(Opcodes.NEW, intBeanClazzName);
    visitor.visitInsn(Opcodes.DUP);
    visitor.visitMethodInsn(Opcodes.INVOKESPECIAL, intBeanClazzName, "<init>", "()V");
    visitor.visitVarInsn(Opcodes.ASTORE, 3);
    return visitor;
}

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.
 * //www  .j  a  v a2  s. 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.
 * //www .  j  ava  2s. co  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   www  . j av  a 2  s  . co 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 which implements the {@link XmlSerializer#serializeProperties(javax.xml.transform.sax.TransformerHandler, Object)}
 * method for the serializer class being created.
 * //from   w  w  w  .  ja va 2s  .  c  o m
 * @param writer class byte code writer
 * @param intBeanClazzName binary name of serializer class being generated
 * @return a method visitor for writing bytecode inside the generated method
 */
private MethodVisitor createSerializeMethod(ClassWriter writer, String intBeanClazzName) {
    String[] exceptions = { "com/nginious/serialize/SerializerException" };
    MethodVisitor visitor = writer.visitMethod(Opcodes.ACC_PUBLIC, "serializeProperties",
            "(Ljavax/xml/transform/sax/TransformerHandler;Ljava/lang/Object;)V", null, exceptions);
    visitor.visitCode();

    Label label = new Label();
    visitor.visitVarInsn(Opcodes.ALOAD, 2);
    visitor.visitJumpInsn(Opcodes.IFNONNULL, label);
    visitor.visitInsn(Opcodes.RETURN);
    visitor.visitLabel(label);
    visitor.visitVarInsn(Opcodes.ALOAD, 0);
    visitor.visitVarInsn(Opcodes.ALOAD, 2);
    visitor.visitTypeInsn(Opcodes.CHECKCAST, intBeanClazzName);
    visitor.visitIntInsn(Opcodes.ASTORE, 3);
    return visitor;
}

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.
 * //from w w  w  .ja  v  a  2  s .c  om
 * @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.EqualsOperator.java

License:Apache License

/**
 * Compiles bytecode for evaluating this equals operator producing
 * a string as result. The specified method visitor is used for generating
 * bytecode./*from  w w  w  .j av  a 2  s .c  om*/
 * 
 * @param visitor the method visitor
 */
private void compileString(MethodVisitor visitor) {
    value1.compile(visitor, Type.STRING);
    visitor.visitVarInsn(Opcodes.ASTORE, 1);
    value2.compile(visitor, Type.STRING);
    visitor.visitVarInsn(Opcodes.ASTORE, 2);
    Label nullLabel = new Label();
    Label notNullLabel = new Label();

    visitor.visitVarInsn(Opcodes.ALOAD, 1);
    visitor.visitJumpInsn(Opcodes.IFNULL, nullLabel);
    visitor.visitVarInsn(Opcodes.ALOAD, 2);
    visitor.visitJumpInsn(Opcodes.IFNULL, nullLabel);

    visitor.visitVarInsn(Opcodes.ALOAD, 1);
    visitor.visitVarInsn(Opcodes.ALOAD, 2);
    visitor.visitMethodInsn(Opcodes.INVOKEVIRTUAL, "java/lang/Object", "equals", "(Ljava/lang/Object;)Z");
    visitor.visitJumpInsn(Opcodes.GOTO, notNullLabel);

    visitor.visitLabel(nullLabel);
    visitor.visitLdcInsn(false);

    visitor.visitLabel(notNullLabel);
}