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44 lines
1.9 KiB
Plaintext
44 lines
1.9 KiB
Plaintext
# Copyright (c) 2023 Calvin Rose & contributors
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#
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# Permission is hereby granted, free of charge, to any person obtaining a copy
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# of this software and associated documentation files (the "Software"), to
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# deal in the Software without restriction, including without limitation the
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# rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
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# sell copies of the Software, and to permit persons to whom the Software is
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# furnished to do so, subject to the following conditions:
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#
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# The above copyright notice and this permission notice shall be included in
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# all copies or substantial portions of the Software.
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#
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# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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# FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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# IN THE SOFTWARE.
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(import ./helper :prefix "" :exit true)
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(start-suite 13)
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(assert (deep= (tabseq [i :in (range 3)] i (* 3 i))
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@{0 0 1 3 2 6}))
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(assert (deep= (tabseq [i :in (range 3)] i)
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@{}))
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(def- sym-prefix-peg
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(peg/compile
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~{:symchar (+ (range "\x80\xff" "AZ" "az" "09") (set "!$%&*+-./:<?=>@^_"))
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:anchor (drop (cmt ($) ,|(= $ 0)))
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:cap (* (+ (> -1 (not :symchar)) :anchor) (* ($) '(some :symchar)))
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:recur (+ :cap (> -1 :recur))
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:main (> -1 :recur)}))
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(assert (deep= (peg/match sym-prefix-peg @"123" 3) @[0 "123"]) "peg lookback")
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(assert (deep= (peg/match sym-prefix-peg @"1234" 4) @[0 "1234"]) "peg lookback 2")
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(assert (deep= (peg/replace-all '(* (<- 1) 1 (backmatch)) "xxx" "aba cdc efa") @"xxx xxx efa") "peg replace-all 1")
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(end-suite)
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