You mean deep into pharo? Or something else? I can do this... On 21 December 2014 at 13:27, stepharo <steph...@free.fr> wrote:
> Could one of you write a small paragraph for the petit parser chapter? > > Le 18/12/14 09:07, Jan Kurš a écrit : > > Exactly... > > This happens so often that we should add some warning somewhere in these > cases.... > > > Cheers, > Jan > > On 18 December 2014 at 08:36, Guillaume Larcheveque < > guillaume.larcheve...@gmail.com> wrote: >> >> So you just have to remove the #star in notA or replace it by #plus to >> makes it succeed only when it consume at least one character >> >> 2014-12-18 7:54 GMT+01:00 Guillaume Larcheveque < >> guillaume.larcheve...@gmail.com>: >>> >>> With x, x it will only go to 2 level deep. >>> >>> With the plus you allow to go as far as the x rule succeed and your x >>> rule always succeed because notA always succeed due to the star without >>> consuming anything so you fall into infinite loop. >>> >>> 2014-12-18 6:47 GMT+01:00 James Foster <smallt...@jgfoster.net>: >>>> >>>> There is something about plus that I don’t understand. In the following >>>> code if I parse for (x , x) then I get what I expect. If I parse for (x >>>> plus) then the image hangs. What am I doing wrong? >>>> >>>> James >>>> >>>> | a notA x y | >>>> a := $a asParser. >>>> notA := $a asParser negate star flatten. >>>> x := a / notA. >>>> y := x , x. “works fine” >>>> y := x plus. “never finishes” >>>> ^y end parse: 'ab’. >>>> >>>> >>>> >>> >>> -- >>> *Guillaume Larcheveque* >>> >>> >> >> -- >> *Guillaume Larcheveque* >> >> >
