src/XPath/XBoolean.hpp

/*
 * 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",
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 *
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
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 * 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/>.
 */
#if !defined(XBOOLEAN_HEADER_GUARD_1357924680)
#define XBOOLEAN_HEADER_GUARD_1357924680



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



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



class XALAN_XPATH_EXPORT XBoolean : public XObject
{
public:

	/**
	 * Perform static initialization.  See class XPathInit.
	 */
	static void
	initialize();

	/**
	 * Perform static shut down.  See class XPathInit.
	 */
	static void
	terminate();

	/**
	 * Construct an XBoolean object from a boolean value
	 * 
	 * @param val		boolean value to initialize object
	 */
	XBoolean(bool	val);

	XBoolean(const XBoolean&	source);

	virtual
	~XBoolean();

	// These methods are inherited from XObject ...

#if defined(XALAN_NO_COVARIANT_RETURN_TYPE)
	virtual XObject*
#else
	virtual XBoolean*
#endif
	clone(void*		theAddress = 0) const;

	virtual XalanDOMString
	getTypeString() const;

	virtual double
	num() const;

	virtual bool
	boolean() const;

	virtual const XalanDOMString&
	str() const;

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

	virtual void
	ProcessXObjectTypeCallback(XObjectTypeCallback&		theCallbackObject);

	virtual void
	ProcessXObjectTypeCallback(XObjectTypeCallback&		theCallbackObject) const;

private:

	bool	m_value;

	static XalanDOMString	s_falseString;

	static XalanDOMString	s_trueString;
};



#endif	// XBOOLEAN_HEADER_GUARD_1357924680