DTDElementDecl.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
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- * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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- * 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/>.
- */
- /*
- * $Id: DTDElementDecl.cpp,v 1.5 2003/05/18 14:02:06 knoaman Exp $
- */
- // ---------------------------------------------------------------------------
- // Includes
- // ---------------------------------------------------------------------------
- #include <xercesc/util/XMLString.hpp>
- #include <xercesc/util/XMLUniDefs.hpp>
- #include <xercesc/util/XMLUni.hpp>
- #include <xercesc/framework/XMLBuffer.hpp>
- #include <xercesc/validators/common/DFAContentModel.hpp>
- #include <xercesc/validators/common/ContentSpecNode.hpp>
- #include <xercesc/validators/common/MixedContentModel.hpp>
- #include <xercesc/validators/common/SimpleContentModel.hpp>
- #include <xercesc/validators/DTD/DTDAttDefList.hpp>
- #include <xercesc/validators/DTD/DTDElementDecl.hpp>
- XERCES_CPP_NAMESPACE_BEGIN
- // ---------------------------------------------------------------------------
- // DTDElementDecl: Constructors and Destructor
- // ---------------------------------------------------------------------------
- DTDElementDecl::DTDElementDecl(MemoryManager* const manager) :
- XMLElementDecl(manager)
- , fAttDefs(0)
- , fAttList(0)
- , fContentSpec(0)
- , fModelType(Any)
- , fContentModel(0)
- , fFormattedModel(0)
- {
- }
- DTDElementDecl::DTDElementDecl( const XMLCh* const elemRawName
- , const unsigned int uriId
- , const DTDElementDecl::ModelTypes type
- , MemoryManager* const manager) :
- XMLElementDecl(manager)
- , fAttDefs(0)
- , fAttList(0)
- , fContentSpec(0)
- , fModelType(type)
- , fContentModel(0)
- , fFormattedModel(0)
- {
- setElementName(elemRawName, uriId);
- }
- DTDElementDecl::DTDElementDecl( QName* const elementName
- , const DTDElementDecl::ModelTypes type
- , MemoryManager* const manager) :
- XMLElementDecl(manager)
- , fAttDefs(0)
- , fAttList(0)
- , fContentSpec(0)
- , fModelType(type)
- , fContentModel(0)
- , fFormattedModel(0)
- {
- setElementName(elementName);
- }
- DTDElementDecl::~DTDElementDecl()
- {
- delete fAttDefs;
- delete fAttList;
- delete fContentSpec;
- delete fContentModel;
- getMemoryManager()->deallocate(fFormattedModel);//delete [] fFormattedModel;
- }
- // ---------------------------------------------------------------------------
- // The virtual element decl interface
- // ---------------------------------------------------------------------------
- XMLAttDef* DTDElementDecl::findAttr(const XMLCh* const qName
- , const unsigned int uriId
- , const XMLCh* const baseName
- , const XMLCh* const prefix
- , const LookupOpts options
- , bool& wasAdded) const
- {
- DTDAttDef* retVal = 0;
- // If no att list faulted in yet, then it cannot exist
- if (fAttDefs)
- retVal = fAttDefs->get(qName);
- // Fault it in if not found and ask to add it
- if (!retVal && (options == XMLElementDecl::AddIfNotFound))
- {
- // Fault in the list itself if not already
- if (!fAttDefs)
- faultInAttDefList();
- // And add a default attribute for this name
- retVal = new (getMemoryManager()) DTDAttDef
- (
- qName
- , XMLAttDef::CData
- , XMLAttDef::Implied
- , getMemoryManager()
- );
- retVal->setElemId(getId());
- fAttDefs->put((void*)retVal->getFullName(), retVal);
- wasAdded = true;
- }
- else
- {
- wasAdded = false;
- }
- return retVal;
- }
- XMLAttDefList& DTDElementDecl::getAttDefList() const
- {
- if (!fAttList)
- {
- // If the att def list is not made yet, then fault it in too
- if (!fAttDefs)
- faultInAttDefList();
- ((DTDElementDecl*)this)->fAttList = new (getMemoryManager()) DTDAttDefList(fAttDefs);
- }
- // Reset it before we return it
- fAttList->Reset();
- return *fAttList;
- }
- XMLElementDecl::CharDataOpts DTDElementDecl::getCharDataOpts() const
- {
- XMLElementDecl::CharDataOpts retVal;
- switch(fModelType)
- {
- case Children :
- retVal = XMLElementDecl::SpacesOk;
- break;
- case Empty :
- retVal = XMLElementDecl::NoCharData;
- break;
- default :
- retVal = XMLElementDecl::AllCharData;
- break;
- }
- return retVal;
- }
- bool DTDElementDecl::hasAttDefs() const
- {
- // If the collection hasn't been faulted in, then no att defs
- if (!fAttDefs)
- return false;
- return !fAttDefs->isEmpty();
- }
- bool DTDElementDecl::resetDefs()
- {
- // If the collection hasn't been faulted in, then no att defs
- if (!fAttDefs)
- return false;
- //
- // Ok, run through them and clear the 'provided' flag on each of them.
- // This lets the scanner use them to track which has been provided and
- // which have not.
- //
- RefHashTableOfEnumerator<DTDAttDef> enumDefs(fAttDefs);
- while (enumDefs.hasMoreElements())
- enumDefs.nextElement().setProvided(false);
- return true;
- }
- void
- DTDElementDecl::setContentSpec(ContentSpecNode* toAdopt)
- {
- delete fContentSpec;
- fContentSpec = toAdopt;
- }
- const XMLCh*
- DTDElementDecl::getFormattedContentModel() const
- {
- //
- // If its not already built, then call the protected virtual method
- // to allow the derived class to build it (since only it knows.)
- // Otherwise, just return the previously formatted methods.
- //
- // Since we are faulting this in, within a const getter, we have to
- // cast off the const-ness.
- //
- if (!fFormattedModel)
- ((DTDElementDecl*)this)->fFormattedModel = formatContentModel();
- return fFormattedModel;
- }
- // ---------------------------------------------------------------------------
- // DTDElementDecl: Getter methods
- // ---------------------------------------------------------------------------
- const DTDAttDef* DTDElementDecl::getAttDef(const XMLCh* const attName) const
- {
- // If no list, then return a null
- if (!fAttDefs)
- return 0;
- return fAttDefs->get(attName);
- }
- DTDAttDef* DTDElementDecl::getAttDef(const XMLCh* const attName)
- {
- // If no list, then return a null
- if (!fAttDefs)
- return 0;
- return fAttDefs->get(attName);
- }
- // ---------------------------------------------------------------------------
- // DTDElementDecl: Implementation of the protected virtual interface
- // ---------------------------------------------------------------------------
- void DTDElementDecl::addAttDef(DTDAttDef* const toAdd)
- {
- // Fault in the att list if required
- if (!fAttDefs)
- faultInAttDefList();
- // Tell this guy the element id of its parent (us)
- toAdd->setElemId(getId());
- fAttDefs->put((void*)(toAdd->getFullName()), toAdd);
- }
- // ---------------------------------------------------------------------------
- // DTDElementDecl: Private helper methods
- // ---------------------------------------------------------------------------
- XMLCh* DTDElementDecl::formatContentModel() const
- {
- XMLCh* newValue = 0;
- if (fModelType == Any)
- {
- newValue = XMLString::replicate(XMLUni::fgAnyString, getMemoryManager());
- }
- else if (fModelType == Empty)
- {
- newValue = XMLString::replicate(XMLUni::fgEmptyString, getMemoryManager());
- }
- else
- {
- //
- // Use a temp XML buffer to format into. Content models could be
- // pretty long, but very few will be longer than one K. The buffer
- // will expand to handle the more pathological ones.
- //
- XMLBuffer bufFmt(1023, getMemoryManager());
- getContentSpec()->formatSpec(bufFmt);
- newValue = XMLString::replicate(bufFmt.getRawBuffer(), getMemoryManager());
- }
- return newValue;
- }
- XMLContentModel* DTDElementDecl::makeContentModel()
- {
- XMLContentModel* cmRet = 0;
- if (fModelType == Mixed_Simple)
- {
- //
- // Just create a mixel content model object. This type of
- // content model is optimized for mixed content validation.
- //
- cmRet = new (getMemoryManager()) MixedContentModel(true, this->getContentSpec(), false, getMemoryManager());
- }
- else if (fModelType == Children)
- {
- //
- // This method will create an optimal model for the complexity
- // of the element's defined model. If its simple, it will create
- // a SimpleContentModel object. If its a simple list, it will
- // create a SimpleListContentModel object. If its complex, it
- // will create a DFAContentModel object.
- //
- cmRet = createChildModel();
- }
- else
- {
- ThrowXML(RuntimeException, XMLExcepts::CM_MustBeMixedOrChildren);
- }
- return cmRet;
- }
- XMLContentModel* DTDElementDecl::createChildModel()
- {
- // Get the content spec node of the element
- ContentSpecNode* specNode = getContentSpec();
- if(!specNode)
- ThrowXML(RuntimeException, XMLExcepts::CM_UnknownCMSpecType);
- //
- // Do a sanity check that the node does not have a PCDATA id. Since,
- // if it was, it should have already gotten taken by the Mixed model.
- //
- if (specNode->getElement()) {
- if (specNode->getElement()->getURI() == XMLElementDecl::fgPCDataElemId)
- ThrowXML(RuntimeException, XMLExcepts::CM_NoPCDATAHere);
- }
- //
- // According to the type of node, we will create the correct type of
- // content model.
- //
- if (specNode->getType() == ContentSpecNode::Leaf)
- {
- // Create a simple content model
- return new (getMemoryManager()) SimpleContentModel
- (
- true
- , specNode->getElement()
- , 0
- , ContentSpecNode::Leaf
- , getMemoryManager()
- );
- }
- else if ((specNode->getType() == ContentSpecNode::Choice)
- || (specNode->getType() == ContentSpecNode::Sequence))
- {
- //
- // Lets see if both of the children are leafs. If so, then it has to
- // be a simple content model
- //
- if ((specNode->getFirst()->getType() == ContentSpecNode::Leaf)
- && (specNode->getSecond()->getType() == ContentSpecNode::Leaf))
- {
- return new (getMemoryManager()) SimpleContentModel
- (
- true
- , specNode->getFirst()->getElement()
- , specNode->getSecond()->getElement()
- , specNode->getType()
- , getMemoryManager()
- );
- }
- }
- else if ((specNode->getType() == ContentSpecNode::OneOrMore)
- || (specNode->getType() == ContentSpecNode::ZeroOrMore)
- || (specNode->getType() == ContentSpecNode::ZeroOrOne))
- {
- //
- // Its a repetition, so see if its one child is a leaf. If so its a
- // repetition of a single element, so we can do a simple content
- // model for that.
- //
- if (specNode->getFirst()->getType() == ContentSpecNode::Leaf)
- {
- return new (getMemoryManager()) SimpleContentModel
- (
- true
- , specNode->getFirst()->getElement()
- , 0
- , specNode->getType()
- , getMemoryManager()
- );
- }
- }
- else
- {
- ThrowXML(RuntimeException, XMLExcepts::CM_UnknownCMSpecType);
- }
- // Its not any simple type of content, so create a DFA based content model
- return new (getMemoryManager()) DFAContentModel
- (
- true
- , this->getContentSpec()
- , getMemoryManager()
- );
- }
- void DTDElementDecl::faultInAttDefList() const
- {
- // Use a hash modulus of 29 and tell it owns its elements
- ((DTDElementDecl*)this)->fAttDefs = new (getMemoryManager()) RefHashTableOf<DTDAttDef>(29, true, getMemoryManager());
- }
- XERCES_CPP_NAMESPACE_END