/*

 * Licensed to the Apache Software Foundation (ASF) under one or more

 * contributor license agreements.  See the NOTICE file distributed with

 * this work for additional information regarding copyright ownership.

 * The ASF licenses this file to You under the Apache License, Version 2.0

 * (the "License"); you may not use this file except in compliance with

 * the License.  You may obtain a copy of the License at

 * 

 *      http://www.apache.org/licenses/LICENSE-2.0

 * 

 * Unless required by applicable law or agreed to in writing, software

 * distributed under the License is distributed on an "AS IS" BASIS,

 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

 * See the License for the specific language governing permissions and

 * limitations under the License.

 */

/*

 * $Id: CMBinaryOp.hpp 568078 2007-08-21 11:43:25Z amassari $

 */

#if !defined(CMBINARYOP_HPP)

#define CMBINARYOP_HPP

#include <xercesc/validators/common/CMNode.hpp>

XERCES_CPP_NAMESPACE_BEGIN

class CMStateSet;

class CMBinaryOp : public CMNode

{

public :

    // -----------------------------------------------------------------------

    //  Constructors

    // -----------------------------------------------------------------------

    CMBinaryOp

    (

        const ContentSpecNode::NodeTypes type

        ,     CMNode* const              leftToAdopt

        ,     CMNode* const              rightToAdopt

        ,     MemoryManager* const       manager = XMLPlatformUtils::fgMemoryManager

    );

    ~CMBinaryOp();

    // -----------------------------------------------------------------------

    //  Getter methods

    // -----------------------------------------------------------------------

    const CMNode* getLeft() const;

    CMNode* getLeft();

    const CMNode* getRight() const;

    CMNode* getRight();

    // -----------------------------------------------------------------------

    //  Implementation of the public CMNode virtual interface

    // -----------------------------------------------------------------------

    bool isNullable() const;

protected :

    // -----------------------------------------------------------------------

    //  Implementation of the protected CMNode virtual interface

    // -----------------------------------------------------------------------

    void calcFirstPos(CMStateSet& toSet) const;

    void calcLastPos(CMStateSet& toSet) const;

private :

    // -----------------------------------------------------------------------

    //  Private data members

    //

    //  fLeftChild

    //  fRightChild

    //      These are the references to the two nodes that are on either side

    //      of this binary operation. We own them both.

    // -----------------------------------------------------------------------

    CMNode* fLeftChild;

    CMNode* fRightChild;

    // -----------------------------------------------------------------------

    //  Unimplemented constructors and operators

    // -----------------------------------------------------------------------

    CMBinaryOp(const CMBinaryOp&);

    CMBinaryOp& operator=(const CMBinaryOp&);

};

XERCES_CPP_NAMESPACE_END

#endif