Hi,

Recent changes in PetitParser have caused parsing to slow down by a factor of 15-20. Here is an example run on freshly downloaded Moose image:

[|string allStyles  text|

string := (PharoFilesOpener default changesFileOrNil contents copyFrom: 1 to: 60000).

text := string asText.

allStyles := {

'Announcement' -> TextColor green. 

'Collections' -> TextColor blue.

'File' -> TextColor blue.

 'Metacello' -> TextColor red.

'Monticello' -> TextColor magenta.

'Morphic' -> TextColor orange.

'Mooose' -> TextColor green.

'FAMIX' -> TextColor green.

'Roassal' -> TextColor green.

}.

allStyles do: [ :assoc | ((assoc key asParser, #newline asParser negate star) matchingRangesIn: string) do: [:aRange | text addAttribute: (assoc value) from: aRange first to: aRange last] ].

text] timeToRun ==> 15 sec

==============

now do this:

Gofer new url: 'http://smalltalkhub.com/mc/Moose/PetitParser/main'; version:'PetitParser-DiegoLont.233'; load.

and run the example again.

timeToRun ===> 2 sec

So, we need to have a look at what is added recently in PetitParser that is making it slow down quite significantly because the for the larger systems, this can be enormous.

regards,

Usman

P.S: Tests run on OS X 10.9.4, 2.3 GHz, 8 GB RAM, HD SSD.

_______________________________________________
Moose-dev mailing list
Moose-dev@iam.unibe.ch
https://www.iam.unibe.ch/mailman/listinfo/moose-dev