CMLeaf.hpp
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- /*
- * 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
- * <http://www.apache.org/>.
- */
- /*
- * $Log: CMLeaf.hpp,v $
- * 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 <util/XercesDefs.hpp>
- #include <util/RuntimeException.hpp>
- #include <validators/common/ContentSpecNode.hpp>
- #include <validators/common/CMNode.hpp>
- #include <validators/common/CMStateSet.hpp>
- //
- // 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);
- }
- #endif