static ClassDocumentPtrPair
        findClassRecursively(const LookupContext &context, const QString &className,
                             unsigned maxIncludeDepth, QString *namespaceName)
{
    const Document::Ptr doc = context.thisDocument();
    const Snapshot docTable = context.snapshot();
    if (Designer::Constants::Internal::debug)
        qDebug() << Q_FUNC_INFO << doc->fileName() << className << maxIncludeDepth;
    // Check document
    if (const Class *cl = findClass(doc->globalNamespace(), context, className, namespaceName))
        return ClassDocumentPtrPair(cl, doc);
    if (maxIncludeDepth) {
        // Check the includes
        const unsigned recursionMaxIncludeDepth = maxIncludeDepth - 1u;
        const auto includedFiles = doc->includedFiles();
        for (const QString &include : includedFiles) {
            const Snapshot::const_iterator it = docTable.find(include);
            if (it != docTable.end()) {
                const Document::Ptr includeDoc = it.value();
                LookupContext context(includeDoc, docTable);
                const ClassDocumentPtrPair irc = findClassRecursively(context, className,
                    recursionMaxIncludeDepth, namespaceName);
                if (irc.first)
                    return irc;
            }
        }
    }
    return ClassDocumentPtrPair(0, Document::Ptr());
}
void CppElementEvaluator::handleLookupItemMatch(const Snapshot &snapshot,
                                                const LookupItem &lookupItem,
                                                const LookupContext &context,
                                                const Scope *scope)
{
    Symbol *declaration = lookupItem.declaration();
    if (!declaration) {
        const QString &type = Overview().prettyType(lookupItem.type(), QString());
        //  special case for bug QTCREATORBUG-4780
        if (scope && scope->isFunction()
                && lookupItem.type().match(scope->asFunction()->returnType())) {
            return;
        }
        m_element = QSharedPointer<CppElement>(new Unknown(type));
    } else {
        const FullySpecifiedType &type = declaration->type();
        if (declaration->isNamespace()) {
            m_element = QSharedPointer<CppElement>(new CppNamespace(declaration));
        } else if (declaration->isClass()
                   || declaration->isForwardClassDeclaration()
                   || (declaration->isTemplate() && declaration->asTemplate()->declaration()
                       && (declaration->asTemplate()->declaration()->isClass()
                           || declaration->asTemplate()->declaration()->isForwardClassDeclaration()))) {
            LookupContext contextToUse = context;
            if (declaration->isForwardClassDeclaration())
                if (Symbol *classDeclaration =
                        m_symbolFinder.findMatchingClassDeclaration(declaration, snapshot)) {
                    declaration = classDeclaration;
                    const QString fileName = QString::fromUtf8(declaration->fileName(),
                                                               declaration->fileNameLength());
                    const Document::Ptr declarationDocument = snapshot.document(fileName);
                    if (declarationDocument != context.thisDocument())
                        contextToUse = LookupContext(declarationDocument, snapshot);
                }

            CppClass *cppClass = new CppClass(declaration);
            if (m_lookupBaseClasses)
                cppClass->lookupBases(declaration, contextToUse);
            if (m_lookupDerivedClasses)
                cppClass->lookupDerived(declaration, snapshot);
            m_element = QSharedPointer<CppElement>(cppClass);
        } else if (Enum *enumDecl = declaration->asEnum()) {
            m_element = QSharedPointer<CppElement>(new CppEnum(enumDecl));
        } else if (EnumeratorDeclaration *enumerator = dynamic_cast<EnumeratorDeclaration *>(declaration)) {
            m_element = QSharedPointer<CppElement>(new CppEnumerator(enumerator));
        } else if (declaration->isTypedef()) {
            m_element = QSharedPointer<CppElement>(new CppTypedef(declaration));
        } else if (declaration->isFunction()
                   || (type.isValid() && type->isFunctionType())
                   || declaration->isTemplate()) {
            m_element = QSharedPointer<CppElement>(new CppFunction(declaration));
        } else if (declaration->isDeclaration() && type.isValid()) {
            m_element = QSharedPointer<CppElement>(
                new CppVariable(declaration, context, lookupItem.scope()));
        } else {
            m_element = QSharedPointer<CppElement>(new CppDeclarableElement(declaration));
        }
    }
}