complextypeinfo.cpp

来自「IBM的解析xml的工具Xerces的源代码」· C++ 代码 · 共 1,129 行 · 第 1/3 页

// ---------------------------------------------------------------------------
//  ComplexTypeInfo: Setter methods
// ---------------------------------------------------------------------------
void ComplexTypeInfo::addAttDef(SchemaAttDef* const toAdd) {

    // Fault in the att list if required
    if (!fAttDefs)
        faultInAttDefList();

    // Tell this guy the element id of its parent (us)
    toAdd->setElemId(getElementId());

    fAttDefs->put((void*)(toAdd->getAttName()->getLocalPart()),
                          toAdd->getAttName()->getURI(), toAdd);
    // update and/or create fAttList
    if(!fAttList)
        ((ComplexTypeInfo*)this)->fAttList = new (fMemoryManager) SchemaAttDefList(fAttDefs,fMemoryManager);
    fAttList->addAttDef(toAdd);
}

void ComplexTypeInfo::setContentSpec(ContentSpecNode* const toAdopt) {

    if (fContentSpec && fAdoptContentSpec) {
        delete fContentSpec;
    }

    fContentSpec = toAdopt;

    //reset Content Model
    setContentModel(0);
}

void ComplexTypeInfo::setLocator(XSDLocator* const aLocator) {

    if (fLocator)
        delete fLocator;

    fLocator = aLocator;
}

// ---------------------------------------------------------------------------
//  ComplexTypeInfo: Getter methods
// ---------------------------------------------------------------------------
XMLAttDefList& ComplexTypeInfo::getAttDefList() const
{
    if (!fAttList)
    {
        // If the att def list is not made yet, then fault it in too
        if (!fAttDefs)
            faultInAttDefList();

        ((ComplexTypeInfo*)this)->fAttList = new (fMemoryManager) SchemaAttDefList(fAttDefs, fMemoryManager);
    }

    // Reset it before we return it
    fAttList->Reset();
    return *fAttList;
}

const XMLCh*
ComplexTypeInfo::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)
        ((ComplexTypeInfo*)this)->fFormattedModel = formatContentModel();

    return fFormattedModel;
}

// ---------------------------------------------------------------------------
//  ComplexTypeInfo: Helper methods
// ---------------------------------------------------------------------------
XMLAttDef* ComplexTypeInfo::findAttr(const XMLCh* const
                                     , const unsigned int uriId
                                     , const XMLCh* const baseName
                                     , const XMLCh* const prefix
                                     , const XMLElementDecl::LookupOpts   options
                                     , bool&              wasAdded) const
{
    SchemaAttDef* retVal = 0;

    // If no att list faulted in yet, then it cannot exist
    if (fAttDefs)
        retVal = fAttDefs->get(baseName, uriId);

    // 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 (fMemoryManager) SchemaAttDef
        (
            prefix
            , baseName
            , uriId
            , XMLAttDef::CData
            , XMLAttDef::Implied
            , fMemoryManager
        );
        retVal->setElemId(getElementId());
        fAttDefs->put((void*)retVal->getAttName()->getLocalPart(), uriId, retVal);

        // update and/or create fAttList
        if(!fAttList)
            ((ComplexTypeInfo*)this)->fAttList = new (fMemoryManager) SchemaAttDefList(fAttDefs,fMemoryManager);
        fAttList->addAttDef(retVal);
        wasAdded = true;
    }
    else
    {
        wasAdded = false;
    }
    return retVal;
}

bool ComplexTypeInfo::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.
    //
    RefHash2KeysTableOfEnumerator<SchemaAttDef> enumDefs(fAttDefs, false, fMemoryManager);
    while (enumDefs.hasMoreElements())
        enumDefs.nextElement().setProvided(false);

    return true;
}


void ComplexTypeInfo::checkUniqueParticleAttribution (SchemaGrammar*    const pGrammar,
                                                      GrammarResolver*  const pGrammarResolver,
                                                      XMLStringPool*    const pStringPool,
                                                      XMLValidator*     const pValidator)
{
    if (fContentSpec && !fContentModel)
    {
        fContentModel = makeContentModel(true);
        if (fContentModel) {
            fContentModel->checkUniqueParticleAttribution(pGrammar, pGrammarResolver, pStringPool, pValidator, fContentSpecOrgURI, fTypeLocalName);
        }
    }
}

// ---------------------------------------------------------------------------
//  ComplexTypeInfo: Private Helper methods
// ---------------------------------------------------------------------------
void ComplexTypeInfo::faultInAttDefList() const
{
    // Use a hash modulus of 29 and tell it owns its elements
    ((ComplexTypeInfo*)this)->fAttDefs =
        new (fMemoryManager) RefHash2KeysTableOf<SchemaAttDef>(29, true, fMemoryManager);
}

XMLCh* ComplexTypeInfo::formatContentModel() const
{
    XMLCh* newValue = 0;
    if (fContentType == SchemaElementDecl::Any)
    {
        newValue = XMLString::replicate(XMLUni::fgAnyString, fMemoryManager);
    }
    else if (fContentType == SchemaElementDecl::Empty)
    {
        newValue = XMLString::replicate(XMLUni::fgEmptyString, fMemoryManager);
    }
    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.
        //
        const ContentSpecNode* specNode = fContentSpec;

        if (specNode) {
            XMLBuffer bufFmt(1023, fMemoryManager);

            specNode->formatSpec(bufFmt);
            newValue = XMLString::replicate
            (
                bufFmt.getRawBuffer()
                , fMemoryManager
            );
        }
    }
    return newValue;
}

XMLContentModel* ComplexTypeInfo::makeContentModel(const bool checkUPA)
{
    ContentSpecNode* aSpecNode = new (fMemoryManager) ContentSpecNode(*fContentSpec);
    XMLContentModel* retModel = 0;

    if (checkUPA) {
        fContentSpecOrgURI = (unsigned int*) fMemoryManager->allocate
        (
            fContentSpecOrgURISize * sizeof(unsigned int)
        ); //new unsigned int[fContentSpecOrgURISize];
    }

    aSpecNode = convertContentSpecTree(aSpecNode, checkUPA);
    retModel = buildContentModel(aSpecNode);

    delete aSpecNode;
    return retModel;
}

XMLContentModel* ComplexTypeInfo::buildContentModel(ContentSpecNode* const aSpecNode)
{
    XMLContentModel* cmRet = 0;
    if (fContentType == SchemaElementDecl::Simple) {
       // just return nothing
    }
    else if (fContentType == SchemaElementDecl::Mixed_Simple)
    {
        //
        //  Just create a mixel content model object. This type of
        //  content model is optimized for mixed content validation.
        //
        cmRet = new (fMemoryManager) MixedContentModel(false, aSpecNode, false, fMemoryManager);
    }
    else if (fContentType == SchemaElementDecl::Mixed_Complex) {

            cmRet = createChildModel(aSpecNode, true);
    }
    else if (fContentType == SchemaElementDecl::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(aSpecNode, false);
    }
     else
    {
        ThrowXMLwithMemMgr(RuntimeException, XMLExcepts::CM_MustBeMixedOrChildren, fMemoryManager);
    }

    return cmRet;
}

// ---------------------------------------------------------------------------
//  SchemaElementDecl: Private helper methods
// ---------------------------------------------------------------------------
XMLContentModel* ComplexTypeInfo::createChildModel(ContentSpecNode* specNode, const bool isMixed)
{
    if(!specNode)
        ThrowXMLwithMemMgr(RuntimeException, XMLExcepts::CM_UnknownCMSpecType, fMemoryManager);

    ContentSpecNode::NodeTypes specType = specNode->getType();
    //
    //  Do a sanity check that the node is 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)
            ThrowXMLwithMemMgr(RuntimeException, XMLExcepts::CM_NoPCDATAHere, fMemoryManager);
    }

    //
    //  According to the type of node, we will create the correct type of
    //  content model.
    //
    if (((specType & 0x0f) == ContentSpecNode::Any) ||
       ((specType & 0x0f) == ContentSpecNode::Any_Other) ||
       ((specType & 0x0f) == ContentSpecNode::Any_NS)) {
       // let fall through to build a DFAContentModel
    }
    else if (isMixed)
    {
        if (specType == ContentSpecNode::All) {
            // All the nodes under an ALL must be additional ALL nodes and
            // ELEMENTs (or ELEMENTs under ZERO_OR_ONE nodes.)
            // We collapse the ELEMENTs into a single vector.
            return new (fMemoryManager) AllContentModel(specNode, true, fMemoryManager);
        }
        else if (specType == ContentSpecNode::ZeroOrOne) {
            // An ALL node can appear under a ZERO_OR_ONE node.
            if (specNode->getFirst()->getType() == ContentSpecNode::All) {
                return new (fMemoryManager) AllContentModel(specNode->getFirst(), true, fMemoryManager);
            }
        }

        // otherwise, let fall through to build a DFAContentModel
    }
     else if (specType == ContentSpecNode::Leaf)
    {
        // Create a simple content model
        return new (fMemoryManager) SimpleContentModel
        (
            false
            , specNode->getElement()
            , 0
            , ContentSpecNode::Leaf
            , fMemoryManager
        );
    }
     else if (((specType & 0x0f) == ContentSpecNode::Choice)
          ||  ((specType & 0x0f) == 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())
        &&  (specNode->getSecond()->getType() == ContentSpecNode::Leaf))
        {
            return new (fMemoryManager) SimpleContentModel
            (
                false
                , specNode->getFirst()->getElement()
                , specNode->getSecond()->getElement()
                , specType
                , fMemoryManager
            );
        }
    }
     else if ((specType == ContentSpecNode::OneOrMore)
          ||  (specType == ContentSpecNode::ZeroOrMore)
          ||  (specType == 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 (fMemoryManager) SimpleContentModel
            (
                false
                , specNode->getFirst()->getElement()
                , 0
                , specType
                , fMemoryManager
            );
        }
        else if (specNode->getFirst()->getType() == ContentSpecNode::All)
            return new (fMemoryManager) AllContentModel(specNode->getFirst(), false, fMemoryManager);

    }
    else if (specType == ContentSpecNode::All)
        return new (fMemoryManager) AllContentModel(specNode, false, fMemoryManager);

    else
    {
        ThrowXMLwithMemMgr(RuntimeException, XMLExcepts::CM_UnknownCMSpecType, fMemoryManager);
    }

    // Its not any simple type of content, so create a DFA based content model
    return new (fMemoryManager) DFAContentModel(false, specNode, isMixed, fMemoryManager);
}

ContentSpecNode*
ComplexTypeInfo::convertContentSpecTree(ContentSpecNode* const curNode,
                                        const bool checkUPA) {

    if (!curNode)
        return 0;