CMBinaryOp.cpp
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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: CMBinaryOp.cpp,v $
- * Revision 1.3 2003/05/15 18:48:27 knoaman
- * Partial implementation of the configurable memory manager.
- *
- * 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 1.3 2001/05/11 13:27:15 tng
- * Copyright update.
- *
- * 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 1.3 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 1.2 2000/02/09 21:42:36 abagchi
- * Copyright swatswat
- *
- * Revision 1.1.1.1 1999/11/09 01:03:00 twl
- * Initial checkin
- *
- * Revision 1.2 1999/11/08 20:45:35 rahul
- * Swat for adding in Product name and CVS comment log variable.
- *
- */
- // ---------------------------------------------------------------------------
- // Includes
- // ---------------------------------------------------------------------------
- #include <xercesc/util/XercesDefs.hpp>
- #include <xercesc/util/RuntimeException.hpp>
- #include <xercesc/validators/common/ContentSpecNode.hpp>
- #include <xercesc/validators/common/CMBinaryOp.hpp>
- #include <xercesc/validators/common/CMStateSet.hpp>
- XERCES_CPP_NAMESPACE_BEGIN
- // ---------------------------------------------------------------------------
- // CMBinaryOp: Constructors
- // ---------------------------------------------------------------------------
- CMBinaryOp::CMBinaryOp( const ContentSpecNode::NodeTypes type
- , CMNode* const leftToAdopt
- , CMNode* const rightToAdopt
- , MemoryManager* const manager) :
- CMNode(type, manager)
- , fLeftChild(leftToAdopt)
- , fRightChild(rightToAdopt)
- {
- // Insure that its one of the types we require
- if ((type != ContentSpecNode::Choice)
- && (type != ContentSpecNode::Sequence))
- {
- ThrowXML(RuntimeException, XMLExcepts::CM_BinOpHadUnaryType);
- }
- }
- CMBinaryOp::~CMBinaryOp()
- {
- delete fLeftChild;
- delete fRightChild;
- }
- // ---------------------------------------------------------------------------
- // CMBinaryOp: Getter methods
- // ---------------------------------------------------------------------------
- const CMNode* CMBinaryOp::getLeft() const
- {
- return fLeftChild;
- }
- CMNode* CMBinaryOp::getLeft()
- {
- return fLeftChild;
- }
- const CMNode* CMBinaryOp::getRight() const
- {
- return fRightChild;
- }
- CMNode* CMBinaryOp::getRight()
- {
- return fRightChild;
- }
- // ---------------------------------------------------------------------------
- // CMBinaryOp: Implementation of the public CMNode virtual interface
- // ---------------------------------------------------------------------------
- bool CMBinaryOp::isNullable() const
- {
- //
- // If its an alternation, then if either child is nullable then
- // this node is nullable. If its a concatenation, then both of
- // them have to be nullable.
- //
- if (getType() == ContentSpecNode::Choice)
- return (fLeftChild->isNullable() || fRightChild->isNullable());
- return (fLeftChild->isNullable() && fRightChild->isNullable());
- }
- // ---------------------------------------------------------------------------
- // CMBinaryOp: Implementation of the protected CMNode virtual interface
- // ---------------------------------------------------------------------------
- void CMBinaryOp::calcFirstPos(CMStateSet& toSet) const
- {
- if (getType() == ContentSpecNode::Choice)
- {
- // Its the the union of the first positions of our children.
- toSet = fLeftChild->getFirstPos();
- toSet |= fRightChild->getFirstPos();
- }
- else if (getType() == ContentSpecNode::Sequence)
- {
- //
- // If our left child is nullable, then its the union of our
- // children's first positions. Else is our left child's first
- // positions.
- //
- toSet = fLeftChild->getFirstPos();
- if (fLeftChild->isNullable())
- toSet |= fRightChild->getFirstPos();
- }
- }
- void CMBinaryOp::calcLastPos(CMStateSet& toSet) const
- {
- if (getType() == ContentSpecNode::Choice)
- {
- // Its the the union of the first positions of our children.
- toSet = fLeftChild->getLastPos();
- toSet |= fRightChild->getLastPos();
- }
- else if (getType() == ContentSpecNode::Sequence)
- {
- //
- // If our right child is nullable, then its the union of our
- // children's last positions. Else is our right child's last
- // positions.
- //
- toSet = fRightChild->getLastPos();
- if (fRightChild->isNullable())
- toSet |= fLeftChild->getLastPos();
- }
- }
- XERCES_CPP_NAMESPACE_END