/*
 * The Apache Software License, Version 1.1
 *
 *
 * Copyright (c) 1999 The Apache Software Foundation.  All rights 
 * reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer. 
 *
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in
 *    the documentation and/or other materials provided with the
 *    distribution.
 *
 * 3. The end-user documentation included with the redistribution,
 *    if any, must include the following acknowledgment:  
 *       "This product includes software developed by the
 *        Apache Software Foundation (http://www.apache.org/)."
 *    Alternately, this acknowledgment may appear in the software itself,
 *    if and wherever such third-party acknowledgments normally appear.
 *
 * 4. The names "Xalan" and "Apache Software Foundation" must
 *    not be used to endorse or promote products derived from this
 *    software without prior written permission. For written 
 *    permission, please contact apache@apache.org.
 *
 * 5. Products derived from this software may not be called "Apache",
 *    nor may "Apache" appear in their name, without prior written
 *    permission of the Apache Software Foundation.
 *
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED.  IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 * ====================================================================
 *
 * This software consists of voluntary contributions made by many
 * individuals on behalf of the Apache Software Foundation and was
 * originally based on software copyright (c) 1999, International
 * Business Machines, Inc., http://www.ibm.com.  For more
 * information on the Apache Software Foundation, please see
 * <http://www.apache.org/>.
 */
// Class header file.
#include "XNumber.hpp"


#include <PlatformSupport/DOMStringHelper.hpp>


XNumber::XNumber(double		val) :
	XNumberBase(),
	m_value(val),
	m_cachedStringValue()
{
}


XNumber::XNumber(const XNumber&		source) :
	XNumberBase(source),
	m_value(source.m_value),
	m_cachedStringValue(source.m_cachedStringValue)
{
}


XNumber::~XNumber()
{
}


#if defined(XALAN_NO_COVARIANT_RETURN_TYPE)
XObject*
#else
XNumber*
#endif
XNumber::clone(void*	theAddress) const
{
	return theAddress == 0 ? new XNumber(*this) : new (theAddress) XNumber(*this);
};


double
XNumber::num() const
{
	return m_value;
}


const XalanDOMString&
XNumber::str() const
{
	if (isEmpty(m_cachedStringValue) == true)
	{
#if defined(XALAN_NO_MUTABLE)
		DoubleToDOMString(m_value, ((XNumber*)this)->m_cachedStringValue);
#else
		DoubleToDOMString(m_value, m_cachedStringValue);
#endif
	}

	return m_cachedStringValue;
}


void
XNumber::str(
			FormatterListener&	formatterListener,
			MemberFunctionPtr	function) const
{
	const XalanDOMString&	theValue = str();

	(formatterListener.*function)(c_wstr(theValue), length(theValue));
}


void
XNumber::str(XalanDOMString&	theBuffer) const
{
	if (isEmpty(m_cachedStringValue) == false)
	{
		append(theBuffer, m_cachedStringValue);
	}
	else
	{
		DoubleToDOMString(m_value, theBuffer);
	}
}


void
XNumber::set(double		theValue)
{
	m_value = theValue;

	clear(m_cachedStringValue);
}