Parses the given XML doc, belonging to the given feed, to obtain a list of
FeedItem.
| this |
a FeedParser. |
| feed |
a FeedChannel to be parsed. |
| doc |
XML document extracted from the contents of the feed, which must already been fetched. |
|
a list of FeedItem, to be freed when no longer in use, or NULL if anerror occours and throws is set. |