/*
 * Copyright 1999-2004 The Apache Software Foundation.
 *
 * Licensed 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.
 */
#if !defined(XNUMBERBASE_HEADER_GUARD_1357924680)
#define XNUMBERBASE_HEADER_GUARD_1357924680


// Base header file.  Must be first.
#include <xalanc/XPath/XPathDefinitions.hpp>


#include <xalanc/XalanDOM/XalanDOMString.hpp>


// Base class header file.
#include <xalanc/XPath/XObject.hpp>


XALAN_CPP_NAMESPACE_BEGIN


class XALAN_XPATH_EXPORT XNumberBase : public XObject
{
public:

	typedef XObject	ParentType;

	XNumberBase(const XNumberBase&	source);

	virtual
	~XNumberBase();

	// These methods are inherited from XObject ...

	virtual const XalanDOMString&
	getTypeString() const;

	virtual double
	num() const = 0;

	virtual bool
	boolean() const;

	virtual const XalanDOMString&
	str() const = 0;

	virtual void
	str(
			FormatterListener&	formatterListener,
			MemberFunctionPtr	function) const = 0;

#if !defined(XALAN_NO_USING_DECLARATION)
	using ParentType::str;
#endif

	virtual double
	stringLength() const = 0;

	virtual void
	ProcessXObjectTypeCallback(XObjectTypeCallback&		theCallbackObject);

	virtual void
	ProcessXObjectTypeCallback(XObjectTypeCallback&		theCallbackObject) const;

protected:

	/**
	 * Constructor for derived classes
	 */
	explicit
	XNumberBase();

private:
};


XALAN_CPP_NAMESPACE_END


#endif	// XNUMBERBASE_HEADER_GUARD_1357924680