On 10/29/14 6:09 AM, Valentin Gosu wrote:
I think the content at http://intertwingly.net/projects/pegurl/url.html
would represent a nice addition to https://url.spec.whatwg.org/, but
can't really replace the parsing steps we already have.
Care to explain why?
It would be great to have a regex/state-machine like visual
representation of the url bits (very useful when looking for things that
are not allowed), but the steps to implement the parsing algorithm are
also necessary if you're writing a new url-parser or simply debugging
your own.
I'll note that the diagrams are generated from the same source used by
my proposed reference implementation, and any additional steps necessary
are defined immediately after the diagrams.
FYI, all the code is available here:
https://github.com/rubys/url
You can build both the spec and the reference implementation using
'make'. Note: please read the top of the Makefile for prerequisite
information.
For those that would rather not build it themselves, you can see this
code in action here:
http://intertwingly.net/projects/pegurl/liveview.html
View source to see the code.
What may also be of interest is the following source file:
https://github.com/rubys/url/blob/peg.js/url.pegjs
In it, you will find spec text (inside JavaScript comments), actual
JavaScript that matches the spec text (inside curly braces), and a
textual representation of the grammar (in Peg.js format).
So it would be really good if we could have the same simplified visual
style in the whatwg spec, and keep the parsing steps as a detailed view.
Eliding the details is definitely a possibility.
- Sam Ruby
On 29 October 2014 10:19, Anne van Kesteren <[email protected]
<mailto:[email protected]>> wrote:
On Sat, Oct 25, 2014 at 2:36 AM, Sam Ruby <[email protected]
<mailto:[email protected]>> wrote:
> He suggested that I ask you for feedback on the following:
>
> http://intertwingly.net/projects/pegurl/url.html
Valentin, could you have a look at this? What is your impression when
you compare the above to the URL parsing algorithm from
https://url.spec.whatwg.org/? Thanks!
--
https://annevankesteren.nl/
