- From: Henri Sivonen <hsivonen@iki.fi>
- Date: Fri, 2 Jan 2009 15:41:22 +0200
- To: Ian Hickson <ian@hixie.ch>
- Cc: HTMLWG WG <public-html@w3.org>
On Dec 25, 2008, at 12:59, Ian Hickson wrote: > On Tue, 9 Dec 2008, Henri Sivonen wrote: [...] > >> The spec change suggestion, therefore, is making step 7.5. of the AAA >> read "If node has any *parser-inserted* children, perform a shallow >> clone of node——". [...] > While what you describe would make your particular implementation > strategy > easier, it would in fact complicate implementations that support > script > and operate on the DOM directly (i.e. all script-aware implementations > today). It would add a boolean flag to each stack node. The main complication seems to be the setting the flag, which is pretty tame. Granted, it does change the nature of the stack nodes a bit, since so far they've been immutable. > Instead, I recommend passing along an _assertion_ along with the > mutations, along the lines of "these elements have children" and > "these > elements don't have children", which the main thread can quickly > check. If > the assertions turn out to be false, which will only happen in rare > caes, > then the thread can synchronise with the main thread, getting itself > updated on what nodes have children, and then try again from that > point. This seems a lot more complicated than requiring all implementations to maintain a flag on each stack node. -- Henri Sivonen hsivonen@iki.fi http://hsivonen.iki.fi/
Received on Friday, 2 January 2009 13:42:09 UTC