Re: [3/5] msxml3/xsl: Basic put_input() method for IXSLProcessor

[Nikolay Sivov]

On 2/15/2011 18:53, Jacek Caban wrote:
> Hi Nikolay,
>
> On 2/14/11 9:04 PM, Nikolay Sivov wrote:
> > Basic put_input() method for IXSLProcessor
> - IXMLDOMNode *old_input = This->input;
> - HRESULT hr;
> - FIXME("(%p): stub\n", This);
> - return E_NOTIMPL;
> - TRACE("(%p)->(type=%d)\n", This, V_VT(&input));
> -
> - /* try IXMLDOMNode directly first */
> - if (V_VT(&input) == VT_UNKNOWN)
> -
>    hr = 
>
> IUnknown_QueryInterface(V_UNKNOWN(&input),&IID_IXMLDOMNode, 
> (void**)&This->input);
> - else if (V_VT(&input) == VT_DISPATCH)
> -
>    hr = 
>
> IDispatch_QueryInterface(V_DISPATCH(&input),&IID_IXMLDOMNode, 
> (void**)&This->input);
> -
> - if (hr != S_OK)
> - {
> -
>    IXMLDOMDocument *doc;
> -
> -
>    hr = DOMDocument_create(&CLSID_DOMDocument, NULL, (void**)&doc);
> -
>    if (hr == S_OK)
> -
>    {
> -
>        hr = IXMLDOMDocument_QueryInterface(doc,&IID_IXMLDOMNode, 
>
> (void**)&This->input);
> -
>        IXMLDOMDocument_Release(doc);
> -
>    }
> - }
> -
> - if (hr == S_OK&&  old_input) IXMLDOMNode_Release(old_input);
>
> Failure of QueryInterface call will set This->input to NULL (you 
> probably want it not changed and even if not, that's a leak). It's 
> probably better idea to have local pointer to the new input instead of 
> old one and change it once you know the function will succeed.

Right, another thing is that I don't load a document from input variant.
> Jacek