/*
* The Apache Software License, Version 1.1
*
* Copyright (c) 1999-2001 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 "Xerces" 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
* .
*/
/*
* $Log: CMLeaf.hpp,v $
* Revision 1.2 2002/11/04 14:54:58 tng
* C++ Namespace Support.
*
* Revision 1.1.1.1 2002/02/01 22:22:37 peiyongz
* sane_include
*
* Revision 1.6 2001/12/06 17:52:17 tng
* Performance Enhancement. The QName that was passed to the CMLeaf
* constructor was always being copied, even though the CMLeaf objects
* only existed during construction of a DFA. In most cases the original
* QName that was passed into the CMLeaf constructor continued to exist long
* after the CMLeaf was destroyed; in some cases the QName was constructed
* specifically to be passed to the CMLeaf constructor. Added a second CMLeaf constructor that indicated the QName passed in was to be adopted; otherwise the CMLeaf constructor just sets a reference to the QName passed in.
* By Henry Zongaro.
*
* Revision 1.5 2001/10/03 15:08:45 tng
* typo fix: remove the extra space which may confuse some compilers while constructing the qname.
*
* Revision 1.4 2001/05/11 13:27:16 tng
* Copyright update.
*
* Revision 1.3 2001/04/19 18:17:27 tng
* Schema: SchemaValidator update, and use QName in Content Model
*
* Revision 1.2 2001/02/16 14:58:57 tng
* Schema: Update Makefile, configure files, project files, and include path in
* certain cpp files because of the move of the common Content Model files. By Pei Yong Zhang.
*
* Revision 1.1 2001/02/16 14:17:29 tng
* Schema: Move the common Content Model files that are shared by DTD
* and schema from 'DTD' folder to 'common' folder. By Pei Yong Zhang.
*
* Revision 1.5 2000/03/28 19:43:25 roddey
* Fixes for signed/unsigned warnings. New work for two way transcoding
* stuff.
*
* Revision 1.4 2000/03/02 19:55:37 roddey
* This checkin includes many changes done while waiting for the
* 1.1.0 code to be finished. I can't list them all here, but a list is
* available elsewhere.
*
* Revision 1.3 2000/02/24 20:16:47 abagchi
* Swat for removing Log from API docs
*
* Revision 1.2 2000/02/09 21:42:36 abagchi
* Copyright swat
*
* Revision 1.1.1.1 1999/11/09 01:03:04 twl
* Initial checkin
*
* Revision 1.2 1999/11/08 20:45:36 rahul
* Swat for adding in Product name and CVS comment log variable.
*
*/
#if !defined(CMLEAF_HPP)
#define CMLEAF_HPP
#include
#include
#include
#include
#include
XERCES_CPP_NAMESPACE_BEGIN
//
// This class represents a leaf in the content spec node tree of an
// element's content model. It just has an element qname and a position value,
// the latter of which is used during the building of a DFA.
//
class CMLeaf : public CMNode
{
public :
// -----------------------------------------------------------------------
// Constructors
// -----------------------------------------------------------------------
CMLeaf
(
QName* const element
, const unsigned int position = ~0
);
CMLeaf
(
QName* const element
, const unsigned int position
, const bool adopt
);
~CMLeaf();
// -----------------------------------------------------------------------
// Getter methods
// -----------------------------------------------------------------------
QName* getElement();
const QName* getElement() const;
unsigned int getPosition() const;
// -----------------------------------------------------------------------
// Setter methods
// -----------------------------------------------------------------------
void setPosition(const unsigned int newPosition);
// -----------------------------------------------------------------------
// Implementation of public CMNode virtual interface
// -----------------------------------------------------------------------
bool isNullable() const;
protected :
// -----------------------------------------------------------------------
// Implementation of protected CMNode virtual interface
// -----------------------------------------------------------------------
void calcFirstPos(CMStateSet& toSet) const;
void calcLastPos(CMStateSet& toSet) const;
private :
// -----------------------------------------------------------------------
// Private data members
//
// fElement
// This is the element that this leaf represents.
//
// fPosition
// Part of the algorithm to convert a regex directly to a DFA
// numbers each leaf sequentially. If its -1, that means its an
// epsilon node. All others are non-epsilon positions.
//
// fAdopt
// This node is responsible for the storage of the fElement QName.
// -----------------------------------------------------------------------
QName* fElement;
unsigned int fPosition;
bool fAdopt;
};
// -----------------------------------------------------------------------
// Constructors
// -----------------------------------------------------------------------
inline CMLeaf::CMLeaf( QName* const element
, const unsigned int position) :
CMNode(ContentSpecNode::Leaf)
, fElement(0)
, fPosition(position)
, fAdopt(false)
{
if (!element)
{
fElement = new QName(XMLUni::fgZeroLenString
, XMLUni::fgZeroLenString
, XMLElementDecl::fgInvalidElemId);
// We have to be responsible for this QName - override default fAdopt
fAdopt = true;
}
else
{
fElement = element;
}
}
inline CMLeaf::CMLeaf( QName* const element
, const unsigned int position
, const bool adopt) :
CMNode(ContentSpecNode::Leaf)
, fElement(0)
, fPosition(position)
, fAdopt(adopt)
{
if (!element)
{
fElement = new QName(XMLUni::fgZeroLenString
, XMLUni::fgZeroLenString
, XMLElementDecl::fgInvalidElemId);
// We have to be responsible for this QName - override adopt parameter
fAdopt = true;
}
else
{
fElement = element;
}
}
inline CMLeaf::~CMLeaf()
{
if (fAdopt)
delete fElement;
}
// ---------------------------------------------------------------------------
// Getter methods
// ---------------------------------------------------------------------------
inline QName* CMLeaf::getElement()
{
return fElement;
}
inline const QName* CMLeaf::getElement() const
{
return fElement;
}
inline unsigned int CMLeaf::getPosition() const
{
return fPosition;
}
// ---------------------------------------------------------------------------
// Setter methods
// ---------------------------------------------------------------------------
inline void CMLeaf::setPosition(const unsigned int newPosition)
{
fPosition = newPosition;
}
// ---------------------------------------------------------------------------
// Implementation of public CMNode virtual interface
// ---------------------------------------------------------------------------
inline bool CMLeaf::isNullable() const
{
// Leaf nodes are never nullable unless its an epsilon node
return (fPosition == -1);
}
// ---------------------------------------------------------------------------
// Implementation of protected CMNode virtual interface
// ---------------------------------------------------------------------------
inline void CMLeaf::calcFirstPos(CMStateSet& toSet) const
{
// If we are an epsilon node, then the first pos is an empty set
if (fPosition == -1)
{
toSet.zeroBits();
return;
}
// Otherwise, its just the one bit of our position
toSet.setBit(fPosition);
}
inline void CMLeaf::calcLastPos(CMStateSet& toSet) const
{
// If we are an epsilon node, then the last pos is an empty set
if (fPosition == -1)
{
toSet.zeroBits();
return;
}
// Otherwise, its just the one bit of our position
toSet.setBit(fPosition);
}
XERCES_CPP_NAMESPACE_END
#endif