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rain-1/racket-peg
source-location of tags

Is it possible to retrieve the source location (using something like syntax-srcloc) of tags? Consider this simple example: (require peg) (define-peg/tag identifier (+ (! #\newline #\space) (any-char))) ...
  • db7
  • Opened 
    on Jun 5, 2024
  • #83

rain-1/racket-peg
Precise defitition of the peg syntax?

What s the easiest way to understand the peg syntax? I saw https://docs.racket-lang.org/peg/index.html#%28part..P.E.G.Syntax_.Reference%29 . Is there some additional reference material one should review? ...
  • winny-
  • 2
  • Opened 
    on Nov 23, 2022
  • #82

rain-1/racket-peg
Bug with context-sensitive grammar

I took example from Ford s original paper: A ← aAb/ε B ← bBc/ε S ← (A!b)a∗ B!. #lang racket (require peg) (define-peg A (or (and (char #\a) A (char #\b)) (epsilon))) (define-peg B (or (and ...
  • stereobooster
  • 1
  • Opened 
    on Mar 20, 2021
  • #79

rain-1/racket-peg
Release under LGPLv3+

Hi, I note that the library is released under GPLv3. Is it possible relicensing under LGPLv3+ so it can be used in other projects without forcing them to become GPL projects? In case of affirmative answer, ...
  • massimo-zaniboni
  • Opened 
    on Jan 12, 2020
  • #78

rain-1/racket-peg
'capture' should be 'name' in reference

In peg.scribble @subsection{define-peg}: Change capture with name bad: (code:line (capture name rule )) good: (code:line (name nm rule ))
  • petterpripp
  • 1
  • Opened 
    on Oct 17, 2019
  • #77

rain-1/racket-peg
Overriding/adding alternatives to rules from imported modules

It would be useful to be able to declare a grammar which extends an existing one with new alternatives for a rule, e.g. something like: expr.rkt: #lang peg program - expr; expr - sum; sum - (a:product ...
  • gianluca-nitti
  • 2
  • Opened 
    on Aug 30, 2019
  • #76

rain-1/racket-peg
benchmark this

do some timing measurements against other parsers e.g. lalr parser in guile scheme. see how efficient this parser is on a range of languages compared to other systems.
  • rain-1
  • Opened 
    on Jun 18, 2019
  • #75

rain-1/racket-peg
implement memorization of results

So, when we do something like A - ifElse / if ifElse - if else if - .... When try to parse a simple if with A, ifElse will fail, then will try if , but will remember Hey, I match a if starting in ...
  • petrolifero
  • 1
  • Opened 
    on Jan 19, 2019
  • #73

rain-1/racket-peg
No way to use bake from PEG language.

  • rain-1
  • 1
  • Opened 
    on Jan 11, 2019
  • #72

rain-1/racket-peg
change (? e) to (or e (epsilon))

the optional operator (?) is not fundamental. He can be written using or in the way on title. If we do that, as we do when add the ( ) operator, in a future when a feature must be added, will be less ...
  • petrolifero
  • 1
  • Opened 
    on Jan 7, 2019
  • #71
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