msxml3: Don't use xmlnode's IXMLDOMNode iface in get_[first|last]Node implementations.

dlls/msxml3/attribute.c

@@ -249,7 +249,10 @@ static HRESULT WINAPI domattr_get_firstChild(
     IXMLDOMNode** domNode)
 {
     domattr *This = impl_from_IXMLDOMAttribute( iface );
-    return IXMLDOMNode_get_firstChild( IXMLDOMNode_from_impl(&This->node), domNode );
+
+    TRACE("(%p)->(%p)\n", This, domNode);
+
+    return node_get_first_child(&This->node, domNode);
 }
 
 static HRESULT WINAPI domattr_get_lastChild(
@@ -257,7 +260,10 @@ static HRESULT WINAPI domattr_get_lastChild(
     IXMLDOMNode** domNode)
 {
     domattr *This = impl_from_IXMLDOMAttribute( iface );
-    return IXMLDOMNode_get_lastChild( IXMLDOMNode_from_impl(&This->node), domNode );
+
+    TRACE("(%p)->(%p)\n", This, domNode);
+
+    return node_get_first_child(&This->node, domNode);
 }
 
 static HRESULT WINAPI domattr_get_previousSibling(

dlls/msxml3/cdata.c

@@ -260,7 +260,10 @@ static HRESULT WINAPI domcdata_get_firstChild(
     IXMLDOMNode** domNode)
 {
     domcdata *This = impl_from_IXMLDOMCDATASection( iface );
-    return IXMLDOMNode_get_firstChild( IXMLDOMNode_from_impl(&This->node), domNode );
+
+    TRACE("(%p)->(%p)\n", This, domNode);
+
+    return return_null_node(domNode);
 }
 
 static HRESULT WINAPI domcdata_get_lastChild(
@@ -268,7 +271,10 @@ static HRESULT WINAPI domcdata_get_lastChild(
     IXMLDOMNode** domNode)
 {
     domcdata *This = impl_from_IXMLDOMCDATASection( iface );
-    return IXMLDOMNode_get_lastChild( IXMLDOMNode_from_impl(&This->node), domNode );
+
+    TRACE("(%p)->(%p)\n", This, domNode);
+
+    return return_null_node(domNode);
 }
 
 static HRESULT WINAPI domcdata_get_previousSibling(

dlls/msxml3/comment.c

@@ -253,7 +253,10 @@ static HRESULT WINAPI domcomment_get_firstChild(
     IXMLDOMNode** domNode)
 {
     domcomment *This = impl_from_IXMLDOMComment( iface );
-    return IXMLDOMNode_get_firstChild( IXMLDOMNode_from_impl(&This->node), domNode );
+
+    TRACE("(%p)->(%p)\n", This, domNode);
+
+    return return_null_node(domNode);
 }
 
 static HRESULT WINAPI domcomment_get_lastChild(
@@ -261,7 +264,10 @@ static HRESULT WINAPI domcomment_get_lastChild(
     IXMLDOMNode** domNode)
 {
     domcomment *This = impl_from_IXMLDOMComment( iface );
-    return IXMLDOMNode_get_lastChild( IXMLDOMNode_from_impl(&This->node), domNode );
+
+    TRACE("(%p)->(%p)\n", This, domNode);
+
+    return return_null_node(domNode);
 }
 
 static HRESULT WINAPI domcomment_get_previousSibling(

dlls/msxml3/docfrag.c

@@ -255,7 +255,10 @@ static HRESULT WINAPI domfrag_get_firstChild(
     IXMLDOMNode** domNode)
 {
     domfrag *This = impl_from_IXMLDOMDocumentFragment( iface );
-    return IXMLDOMNode_get_firstChild( IXMLDOMNode_from_impl(&This->node), domNode );
+
+    TRACE("(%p)->(%p)\n", This, domNode);
+
+    return node_get_first_child(&This->node, domNode);
 }
 
 static HRESULT WINAPI domfrag_get_lastChild(
@@ -263,7 +266,10 @@ static HRESULT WINAPI domfrag_get_lastChild(
     IXMLDOMNode** domNode)
 {
     domfrag *This = impl_from_IXMLDOMDocumentFragment( iface );
-    return IXMLDOMNode_get_lastChild( IXMLDOMNode_from_impl(&This->node), domNode );
+
+    TRACE("(%p)->(%p)\n", This, domNode);
+
+    return node_get_first_child(&This->node, domNode);
 }
 
 static HRESULT WINAPI domfrag_get_previousSibling(

dlls/msxml3/domdoc.c

@@ -764,7 +764,10 @@ static HRESULT WINAPI domdoc_get_firstChild(
     IXMLDOMNode** firstChild )
 {
     domdoc *This = impl_from_IXMLDOMDocument3( iface );
-    return IXMLDOMNode_get_firstChild( IXMLDOMNode_from_impl(&This->node), firstChild );
+
+    TRACE("(%p)->(%p)\n", This, firstChild);
+
+    return node_get_first_child(&This->node, firstChild);
 }
 
 
@@ -773,7 +776,10 @@ static HRESULT WINAPI domdoc_get_lastChild(
     IXMLDOMNode** lastChild )
 {
     domdoc *This = impl_from_IXMLDOMDocument3( iface );
-    return IXMLDOMNode_get_lastChild( IXMLDOMNode_from_impl(&This->node), lastChild );
+
+    TRACE("(%p)->(%p)\n", This, lastChild);
+
+    return node_get_first_child(&This->node, lastChild);
 }
 
 

dlls/msxml3/element.c

@@ -264,7 +264,10 @@ static HRESULT WINAPI domelem_get_firstChild(
     IXMLDOMNode** domNode)
 {
     domelem *This = impl_from_IXMLDOMElement( iface );
-    return IXMLDOMNode_get_firstChild( IXMLDOMNode_from_impl(&This->node), domNode );
+
+    TRACE("(%p)->(%p)\n", This, domNode);
+
+    return node_get_first_child(&This->node, domNode);
 }
 
 static HRESULT WINAPI domelem_get_lastChild(
@@ -272,7 +275,10 @@ static HRESULT WINAPI domelem_get_lastChild(
     IXMLDOMNode** domNode)
 {
     domelem *This = impl_from_IXMLDOMElement( iface );
-    return IXMLDOMNode_get_lastChild( IXMLDOMNode_from_impl(&This->node), domNode );
+
+    TRACE("(%p)->(%p)\n", This, domNode);
+
+    return node_get_first_child(&This->node, domNode);
 }
 
 static HRESULT WINAPI domelem_get_previousSibling(

dlls/msxml3/entityref.c

@@ -251,7 +251,10 @@ static HRESULT WINAPI entityref_get_firstChild(
     IXMLDOMNode** domNode)
 {
     entityref *This = impl_from_IXMLDOMEntityReference( iface );
-    return IXMLDOMNode_get_firstChild( IXMLDOMNode_from_impl(&This->node), domNode );
+
+    TRACE("(%p)->(%p)\n", This, domNode);
+
+    return node_get_first_child(&This->node, domNode);
 }
 
 static HRESULT WINAPI entityref_get_lastChild(
@@ -259,7 +262,10 @@ static HRESULT WINAPI entityref_get_lastChild(
     IXMLDOMNode** domNode)
 {
     entityref *This = impl_from_IXMLDOMEntityReference( iface );
-    return IXMLDOMNode_get_lastChild( IXMLDOMNode_from_impl(&This->node), domNode );
+
+    TRACE("(%p)->(%p)\n", This, domNode);
+
+    return node_get_first_child(&This->node, domNode);
 }
 
 static HRESULT WINAPI entityref_get_previousSibling(

dlls/msxml3/msxml_private.h

@@ -164,6 +164,8 @@ extern HRESULT node_get_content(xmlnode*,VARIANT*);
 extern HRESULT node_put_value(xmlnode*,VARIANT*);
 extern HRESULT node_get_parent(xmlnode*,IXMLDOMNode**);
 extern HRESULT node_get_child_nodes(xmlnode*,IXMLDOMNodeList**);
+extern HRESULT node_get_first_child(xmlnode*,IXMLDOMNode**);
+extern HRESULT node_get_last_child(xmlnode*,IXMLDOMNode**);
 
 
 extern HRESULT DOMDocument_create_from_xmldoc(xmlDocPtr xmldoc, IXMLDOMDocument3 **document);
@@ -200,6 +202,14 @@ static inline HRESULT return_bstr(const WCHAR *value, BSTR *p)
     return S_OK;
 }
 
+static inline HRESULT return_null_node(IXMLDOMNode **p)
+{
+    if(!p)
+        return E_INVALIDARG;
+    *p = NULL;
+    return S_FALSE;
+}
+
 #endif
 
 void* libxslt_handle;

dlls/msxml3/node.c

@@ -313,38 +313,30 @@ static HRESULT WINAPI xmlnode_get_childNodes(
     return E_NOTIMPL;
 }
 
+HRESULT node_get_first_child(xmlnode *This, IXMLDOMNode **ret)
+{
+    return get_node(This, "firstChild", This->node->children, ret);
+}
+
 static HRESULT WINAPI xmlnode_get_firstChild(
     IXMLDOMNode *iface,
     IXMLDOMNode** firstChild)
 {
-    xmlnode *This = impl_from_IXMLDOMNode( iface );
-    TRACE("(%p)->(%p)\n", This, firstChild);
-    return get_node( This, "firstChild", This->node->children, firstChild );
+    ERR("Should not be called\n");
+    return E_NOTIMPL;
+}
+
+HRESULT node_get_last_child(xmlnode *This, IXMLDOMNode **ret)
+{
+    return get_node(This, "lastChild", This->node->last, ret);
 }
 
 static HRESULT WINAPI xmlnode_get_lastChild(
     IXMLDOMNode *iface,
     IXMLDOMNode** lastChild)
 {
-    xmlnode *This = impl_from_IXMLDOMNode( iface );
-
-    TRACE("(%p)->(%p)\n", This, lastChild );
-
-    if (!lastChild)
-        return E_INVALIDARG;
-
-    switch( This->node->type )
-    {
-    /* CDATASection, Comment, PI and Text Nodes do not support lastChild */
-    case XML_TEXT_NODE:
-    case XML_CDATA_SECTION_NODE:
-    case XML_PI_NODE:
-    case XML_COMMENT_NODE:
-        *lastChild = NULL;
-        return S_FALSE;
-    default:
-        return get_node( This, "lastChild", This->node->last, lastChild );
-    }
+    ERR("Should not be called\n");
+    return E_NOTIMPL;
 }
 
 static HRESULT WINAPI xmlnode_get_previousSibling(
@@ -1838,7 +1830,10 @@ static HRESULT WINAPI unknode_get_firstChild(
     IXMLDOMNode** domNode)
 {
     unknode *This = impl_from_unkIXMLDOMNode( iface );
-    return IXMLDOMNode_get_firstChild( IXMLDOMNode_from_impl(&This->node), domNode );
+
+    TRACE("(%p)->(%p)\n", This, domNode);
+
+    return node_get_first_child(&This->node, domNode);
 }
 
 static HRESULT WINAPI unknode_get_lastChild(
@@ -1846,7 +1841,10 @@ static HRESULT WINAPI unknode_get_lastChild(
     IXMLDOMNode** domNode)
 {
     unknode *This = impl_from_unkIXMLDOMNode( iface );
-    return IXMLDOMNode_get_lastChild( IXMLDOMNode_from_impl(&This->node), domNode );
+
+    TRACE("(%p)->(%p)\n", This, domNode);
+
+    return node_get_first_child(&This->node, domNode);
 }
 
 static HRESULT WINAPI unknode_get_previousSibling(

dlls/msxml3/pi.c

@@ -266,7 +266,10 @@ static HRESULT WINAPI dom_pi_get_firstChild(
     IXMLDOMNode** domNode)
 {
     dom_pi *This = impl_from_IXMLDOMProcessingInstruction( iface );
-    return IXMLDOMNode_get_firstChild( IXMLDOMNode_from_impl(&This->node), domNode );
+
+    TRACE("(%p)->(%p)\n", This, domNode);
+
+    return return_null_node(domNode);
 }
 
 static HRESULT WINAPI dom_pi_get_lastChild(
@@ -274,7 +277,10 @@ static HRESULT WINAPI dom_pi_get_lastChild(
     IXMLDOMNode** domNode)
 {
     dom_pi *This = impl_from_IXMLDOMProcessingInstruction( iface );
-    return IXMLDOMNode_get_lastChild( IXMLDOMNode_from_impl(&This->node), domNode );
+
+    TRACE("(%p)->(%p)\n", This, domNode);
+
+    return return_null_node(domNode);
 }
 
 static HRESULT WINAPI dom_pi_get_previousSibling(

dlls/msxml3/text.c

@@ -266,7 +266,10 @@ static HRESULT WINAPI domtext_get_firstChild(
     IXMLDOMNode** domNode)
 {
     domtext *This = impl_from_IXMLDOMText( iface );
-    return IXMLDOMNode_get_firstChild( IXMLDOMNode_from_impl(&This->node), domNode );
+
+    TRACE("(%p)->(%p)\n", This, domNode);
+
+    return return_null_node(domNode);
 }
 
 static HRESULT WINAPI domtext_get_lastChild(
@@ -274,7 +277,10 @@ static HRESULT WINAPI domtext_get_lastChild(
     IXMLDOMNode** domNode)
 {
     domtext *This = impl_from_IXMLDOMText( iface );
-    return IXMLDOMNode_get_lastChild( IXMLDOMNode_from_impl(&This->node), domNode );
+
+    TRACE("(%p)->(%p)\n", This, domNode);
+
+    return return_null_node(domNode);
 }
 
 static HRESULT WINAPI domtext_get_previousSibling(