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brag/examples/cutter-another.rkt

9 lines
196 B
Racket

#lang yaragg
top : w | x | y | z | a | b | c
w : /"w" ; atom
x : /("x") ; seq
y : /("y" "y") ; seq
z : /("w" | "z") ; choice
a : /["a"] ; opt
b : /(["b"] "b") ; opt in seq
c : /"c"+ ; repeat