Hi,
In LPEG , you can pass a variable to your parser using Carg.
BUT if you build your grammar dynamically for EACH string / file you could pre-create state for each of your Cmt functions.
- One design is stateless ( which has some dubious clarity )
- One design creates a separate grammar for each string , which is likely slower ?
Question 1 :: is option 2 a anti-pattern ? do we stick to option 1 ?
Another issue I feel you have with using Carg is that all your rules have Carg all over the place.
local patt1 = P(Carg(1)* .................)
local patt2 = P(Carg(1)* .................)
I understand that its possible to pass multiple arguments with multiple states :
local patt1 = P(Carg(1)* .................)
local patt2 = P(Carg(2)* .................)
local patt2 = P(Carg(3)* .................)
But it doesn't make things any clearer, and now you need to remember which number corresponds to which variable.
My question is that of confidence and design - how large does your parser have to get before this method of arranging stops making sense ?
best wishes,
Joy
