BrainFuck for PEG.js

Expression
  = (Token / Loop)*

Token
  = Right
  / Left
  / Increment
  / Decrement
  / Put
  / Get

Loop = BeginLoop body: Expression EndLoop {
  return body;
}

Right = ">"
Left = "<"
Increment = "+"
Decrement = "-"
Put = "."
Get = ","
BeginLoop = "["
EndLoop = "]"

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