janet/test/suite0013.janet

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(import ./helper :prefix "" :exit true)
(start-suite 13)

(assert (deep= (tabseq [i :in (range 3)] i (* 3 i))
               @{0 0 1 3 2 6}))

(assert (deep= (tabseq [i :in (range 3)] i)
               @{}))

(def- sym-prefix-peg
  (peg/compile
    ~{:symchar (+ (range "\x80\xff" "AZ" "az" "09") (set "!$%&*+-./:<?=>@^_"))
      :anchor (drop (cmt ($) ,|(= $ 0)))
      :cap (* (+ (> -1 (not :symchar)) :anchor) (* ($) '(some :symchar)))
      :recur (+ :cap (> -1 :recur))
      :main (> -1 :recur)}))

(assert (deep= (peg/match sym-prefix-peg @"123" 3) @[0 "123"]) "peg lookback")
(assert (deep= (peg/match sym-prefix-peg @"1234" 4) @[0 "1234"]) "peg lookback 2")

(assert (deep= (peg/replace-all '(* (<- 1) 1 (backmatch)) "xxx" "aba cdc efa") @"xxx xxx efa") "peg replace-all 1")

(end-suite)