How to define {min,max} matches in treetop peg

Question

With Ruby's regular expressions I could write /[0-9]{3,}/ I can't figure out how to write this in treetop other than:

rule at_least_three_digit_number
  [0-9] [0-9] [0-9]+
end

Is there a 'match [at least|most] n' rule for treetop?

Answer 1

It looks like PEGs don't have some of the RE convenience operators, but in return you do get a much more powerful expression matcher.