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A small but practical concatenative programming language.

tests/lang.min

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@test
#test

"lang" describe

  (symbols size 153 ==) assert

  (sigils size 11 ==) assert

  (debug? false ==) assert

  (2 'a let
    (3 a + (5 'a let a) -> +) -> a + 12 ==) assert

  (symbols "a" contains false ==) assert

  (5 'five : symbols "five" contains) assert

  ("five" delete symbols "five" contains false  ==) assert

  (
    (
      (+) :myplus
    ) =mymath
  ) :defmod
  
  (defmod symbols "mymath" contains) assert

  (defmod #mymath 2 3 myplus 5 ==) assert

  ((":mysigil" concat) ', sigil ,test "test:mysigil" ==) assert

  ("3 4 +" eval 7 ==) assert

  ("2 2 +" "tests/testload.min" fwrite @testload 4 ==) assert
  "tests/testload.min" rm

  (defmod 2 2 %mymath:myplus 4 ==) assert
  
  (1 2 3 4 getstack (1 2 3 4) ==) assert

  ((1 2 3) setstack getstack (1 2 3) ==) assert

  ((1 2) (3 4) concat (1 2 3 4) ==) assert

  ((1 2 3) first 1 ==) assert
  
  ((1 2 3) rest (2 3) ==) assert

  (2 quote (2) ==) assert

  ((2 3) unquote getstack (2 3) ==) assert

  (4 (1 2 3) append (1 2 3 4) ==) assert

  (1 (2 3) cons (1 2 3) ==) assert

  ((1 2 3 4) 2 at 3 ==) assert

  ((1 2 3) size 3 ==) assert

  ((1 2 3 4) 5 contains false ==) assert
  ((1 2 3 4) 2 contains) assert

  ((1 2 3 4) (2 +) map (3 4 5 6) ==) assert

  (3 (succ) 3 times 6 ==) assert

  ((2 3 >) ("YES") ("NO") ifte "NO" ==) assert
  ((2 3 <) ("YES") ("NO") ifte "YES" ==) assert

  (0 .c
    (c 10 <) (c succ :c) while
    c 10 ==) assert

  ((1 2 3 4 5) (even?) filter (2 4) ==) assert

  (5 (dup 0 ==) (1 +) (dup 1 -) ( * ) linrec 120 ==) assert ;factorial of 5

  report
  ; Tidy up
  ~defmod
  clear