Love your work Adam, Eric and all involved with this project.
On 22 July 2010 11:30, Adam Barth <aba...@webkit.org> wrote: > We're getting close to enabling the HTML5 tree builder on trunk. Once > we do that, we'll have the core of the HTML5 parsing algorithm turned > on, including SVG-in-HTML. There are still a bunch of details left to > finish (such as fragment parsing, MathML entities, and better error > reporting), but this marks a significant milestone for this work. > > The tree builder is markedly more complicated than the tokenizer, and > I'm sure we're going to have some bad regressions. I'd like to ask > your patience and your help to spot and triage these regressions. > We've gotten about as much mileage as we can out of the HTML5lib test > suite and the LayoutTests. The next step for is to see how the > algorithm works in the real world. > > There are about 84 tests that will require new expectations, mostly > due to invisible differences in render tree dumps (e.g., one more or > fewer 0x0 render text). In about half the cases, we've manually > verified that our new results agree with the Firefox nightly builds, > which is great from a compliance and interoperability point of view. > The other half involve things like the exact text for the <isindex>, > which we've chosen to match the spec exactly, or the <keygen> element, > which needs some shadow DOM love to hide its implementation details > from web content. > > As for performance, last time we ran our parser benchmark, the new > tree builder was 1% faster than the old tree builder. There's still a > bunch of low-hanging performance work we can do, such as atomizing > strings and inlining functions. If you're interested in performance, > let me or Eric know and we can point you in the right direction. > > I don't have an exact timeline for when we're going to throw the > switch, but sometime in the next few days. If you'd like us to hold > off for any reason, please let Eric or me know. > > Adam > > P.S., you can follow along by CCing yourself on the master bug, > <https://bugs.webkit.org/show_bug.cgi?id=41123>, or by looking at our > LayoutTest failure triage spreadsheet, > < > https://spreadsheets.google.com/ccc?key=0AlC4tS7Ao1fIdEo0SFdLaVpiclBHMVNQcHlTenV5TEE&hl=en > >. > _______________________________________________ > webkit-dev mailing list > webkit-dev@lists.webkit.org > http://lists.webkit.org/mailman/listinfo.cgi/webkit-dev >
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