On 04/02/2014 17:15, Daniel Hackney wrote:
Simon Sapin <simon.sa...@exyr.org> wrote:
If you have speculative lexing (str -> [Token]) followed by "block and
function grouping" ([Token] -> [ComponentValue]) in order to get equivalent
functionality to rust-cssparser, do you still get speedups compared to
current rust-cssparser? (Which does str -> [ComponentValue])
I haven't investigated it. It would require writing a [Token] ->
[ComponentValue] function, which I didn't yet do for the academic
project. My suspicion is that the lexing takes the bulk of the time,
since CSS doesn't have a very complicated structure, but I haven't
measured it.
If you’re interested in investigating this I can write the [Token] ->
[ComponentValue] function. It should be rather short.
If you think this is something Servo might want to incorporate, I could
look into implementing the parser.
My point above was that once you have [ComponentValue], plugging with
the rest of the parser should be easy.
As to incorporating in Servo I don’t know. It’d need someone working on
it (including to decide if the speedups are worth the overhead), and may
not be a priority right now. But we definitely should at least
investigate it at some point.
Thanks for sharing!
--
Simon Sapin
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