diff -r 000000000000 -r 6474c204b198 rdf/base/src/nsRDFXMLSerializer.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/rdf/base/src/nsRDFXMLSerializer.h	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,118 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef nsRDFXMLSerializer_h__
+#define nsRDFXMLSerializer_h__
+
+#include "nsIRDFLiteral.h"
+#include "nsIRDFXMLSerializer.h"
+#include "nsIRDFXMLSource.h"
+#include "nsNameSpaceMap.h"
+#include "nsXPIDLString.h"
+
+#include "nsDataHashtable.h"
+#include "rdfITripleVisitor.h"
+
+class nsString;
+class nsIOutputStream;
+class nsIRDFContainerUtils;
+
+/**
+ * A helper class that can serialize RDF/XML from a
+ * datasource. Implements both nsIRDFXMLSerializer and
+ * nsIRDFXMLSource.
+ */
+class nsRDFXMLSerializer : public nsIRDFXMLSerializer,
+                           public nsIRDFXMLSource
+{
+public:
+    static nsresult
+    Create(nsISupports* aOuter, REFNSIID aIID, void** aResult);
+
+    NS_DECL_ISUPPORTS
+    NS_DECL_NSIRDFXMLSERIALIZER
+    NS_DECL_NSIRDFXMLSOURCE
+
+protected:
+    nsRDFXMLSerializer();
+    virtual ~nsRDFXMLSerializer();
+
+    // Implementation methods
+    nsresult
+    RegisterQName(nsIRDFResource* aResource);
+    nsresult
+    GetQName(nsIRDFResource* aResource, nsCString& aQName);
+    already_AddRefed<nsIAtom>
+    EnsureNewPrefix();
+
+    nsresult
+    SerializeInlineAssertion(nsIOutputStream* aStream,
+                             nsIRDFResource* aResource,
+                             nsIRDFResource* aProperty,
+                             nsIRDFLiteral* aValue);
+
+    nsresult
+    SerializeChildAssertion(nsIOutputStream* aStream,
+                            nsIRDFResource* aResource,
+                            nsIRDFResource* aProperty,
+                            nsIRDFNode* aValue);
+
+    nsresult
+    SerializeProperty(nsIOutputStream* aStream,
+                      nsIRDFResource* aResource,
+                      nsIRDFResource* aProperty,
+                      bool aInline,
+                      int32_t* aSkipped);
+
+    bool
+    IsContainerProperty(nsIRDFResource* aProperty);
+
+    nsresult
+    SerializeDescription(nsIOutputStream* aStream,
+                         nsIRDFResource* aResource);
+
+    nsresult
+    SerializeMember(nsIOutputStream* aStream,
+                    nsIRDFResource* aContainer,
+                    nsIRDFNode* aMember);
+
+    nsresult
+    SerializeContainer(nsIOutputStream* aStream,
+                       nsIRDFResource* aContainer);
+
+    nsresult
+    SerializePrologue(nsIOutputStream* aStream);
+
+    nsresult
+    SerializeEpilogue(nsIOutputStream* aStream);
+
+    nsresult
+    CollectNamespaces();
+
+    bool
+    IsA(nsIRDFDataSource* aDataSource, nsIRDFResource* aResource, nsIRDFResource* aType);
+
+    nsCOMPtr<nsIRDFDataSource> mDataSource;
+    nsNameSpaceMap mNameSpaces;
+    nsXPIDLCString mBaseURLSpec;
+
+    // hash mapping resources to utf8-encoded QNames
+    nsDataHashtable<nsISupportsHashKey, nsCString> mQNames;
+    friend class QNameCollector;
+
+    uint32_t mPrefixID;
+
+    static int32_t gRefCnt;
+    static nsIRDFResource* kRDF_instanceOf;
+    static nsIRDFResource* kRDF_type;
+    static nsIRDFResource* kRDF_nextVal;
+    static nsIRDFResource* kRDF_Bag;
+    static nsIRDFResource* kRDF_Seq;
+    static nsIRDFResource* kRDF_Alt;
+    static nsIRDFContainerUtils* gRDFC;
+};
+
+#endif // nsRDFXMLSerializer_h__