[DOM4] Doctypes now always have a node document and can be moved across document boundaries

Source/core/dom/DOMImplementation.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2001 Dirk Mueller (mueller@kde.org)
  * Copyright (C) 2004, 2005, 2006, 2007, 2008 Apple Inc. All rights reserved.
  * Copyright (C) 2006 Samuel Weinig (sam@webkit.org)
  * Copyright (C) 2008, 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
@@ skipping 166 matching lines @@
     return true;
 }
 
 PassRefPtr<DocumentType> DOMImplementation::createDocumentType(const String& qualifiedName,
     const String& publicId, const String& systemId, ExceptionState& es)
 {
     String prefix, localName;
     if (!Document::parseQualifiedName(qualifiedName, prefix, localName, es))
         return 0;
 
-    return DocumentType::create(0, qualifiedName, publicId, systemId);
+    return DocumentType::create(m_document, qualifiedName, publicId, systemId);
 }
 
 DOMImplementation* DOMImplementation::getInterface(const String& /*feature*/)
 {
     return 0;
 }
 
 PassRefPtr<Document> DOMImplementation::createDocument(const String& namespaceURI,
     const String& qualifiedName, DocumentType* doctype, ExceptionState& es)
 {
     RefPtr<Document> doc;
     if (namespaceURI == SVGNames::svgNamespaceURI)
         doc = SVGDocument::create();
     else if (namespaceURI == HTMLNames::xhtmlNamespaceURI)
         doc = Document::createXHTML(DocumentInit().withRegistrationContext(m_document->registrationContext()));
     else
         doc = Document::create();
 
     doc->setSecurityOrigin(m_document->securityOrigin());
     doc->setContextFeatures(m_document->contextFeatures());
 
     RefPtr<Node> documentElement;
     if (!qualifiedName.isEmpty()) {
         documentElement = doc->createElementNS(namespaceURI, qualifiedName, es);
         if (es.hadException())
             return 0;
     }
 
-    // WrongDocumentError: Raised if doctype has already been used with a different document or was
-    // created from a different implementation.
-    // Hixie's interpretation of the DOM Core spec suggests we should prefer
-    // other exceptions to WrongDocumentError (based on order mentioned in spec),
-    // but this matches the new DOM Core spec (http://www.w3.org/TR/domcore/).
-    if (doctype && doctype->document()) {
-        es.throwDOMException(WrongDocumentError);
-        return 0;
-    }
-
     if (doctype)
         doc->appendChild(doctype);
     if (documentElement)
         doc->appendChild(documentElement.release());
 
     return doc.release();
 }
 
 PassRefPtr<CSSStyleSheet> DOMImplementation::createCSSStyleSheet(const String&, const String& media)
 {
@@ skipping 123 matching lines @@
         return TextDocument::create(DocumentInit(url, frame));
     if (type == "image/svg+xml")
         return SVGDocument::create(DocumentInit(url, frame));
     if (isXMLMIMEType(type))
         return Document::create(DocumentInit(url, frame));
 
     return HTMLDocument::create(DocumentInit(url, frame));
 }
 
 }