redxef/jellyfin-smart-playlist
1
0
Fork 0
Code Issues Pull requests Projects Releases 5 Packages Wiki Activity Actions

feat(lisp): add quicksort implementation.

Browse source
This commit is contained in:
redxef 2024-11-19 21:15:41 +01:00
parent f479c93c5c
commit 1b0c5455dd
Signed by: redxef
GPG key ID: 7DAC3AA211CBD921
2 changed files with 34 additions and 0 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

32
Jellyfin.Plugin.SmartPlaylist/Lisp/Interpreter.cs
View file

@ -46,6 +46,38 @@ namespace Jellyfin.Plugin.SmartPlaylist.Lisp {
this["fold"] = e.eval("(lambda (fc i l) (if (null l) i (fold fc (fc i (car l)) (cdr l))))"); this["fold"] = e.eval("(lambda (fc i l) (if (null l) i (fold fc (fc i (car l)) (cdr l))))");
this["any"] = e.eval("(lambda (fc l) (apply or (map fc l)))"); this["any"] = e.eval("(lambda (fc l) (apply or (map fc l)))");
this["all"] = e.eval("(lambda (fc l) (apply and (map fc l)))"); this["all"] = e.eval("(lambda (fc l) (apply and (map fc l)))");
this["append"] = e.eval("(lambda (l i) (if (null l) i (cons (car l) (append (cdr l) i))))");
this["qsort"] = e.eval(
"""
(lambda
(fc list00)
(let
(getpivot
(lambda
(list0)
(car list0)))
(split
(lambda
(list0 pivot fc h0 h1)
(cond
((null list0) (list list0 pivot fc h0 h1))
((fc (car list0) pivot) (split (cdr list0) pivot fc h0 (cons (car list0) h1)))
(t (split (cdr list0) pivot fc (cons (car list0) h0) h1)))))
(sort
(lambda
(fc list0)
(cond
((null list0) nil)
((null (cdr list0)) list0)
(t
(let*
(halves (split list0 (getpivot list0) fc nil nil))
(h0 (car (cdr (cdr (cdr halves)))))
(h1 (car (cdr (cdr (cdr (cdr halves))))))
(append (sort fc h0) (sort fc h1)))))))
(sort fc list00)))
"""
);
} }
} }

2
Tests/Tests.cs
View file

@ -226,6 +226,8 @@ namespace Tests
Assert.Equal("nil", e.eval("(all (lambda (x) (= 1 (% x 2))) (list 1 3 4 5))").ToString()); Assert.Equal("nil", e.eval("(all (lambda (x) (= 1 (% x 2))) (list 1 3 4 5))").ToString());
Assert.Equal("nil", e.eval("(all (lambda (x) (= x 2)) nil)").ToString()); Assert.Equal("nil", e.eval("(all (lambda (x) (= x 2)) nil)").ToString());
Assert.Equal("10", e.eval("(fold (lambda (a b) (+ a b)) 0 (list 1 2 3 4))").ToString()); Assert.Equal("10", e.eval("(fold (lambda (a b) (+ a b)) 0 (list 1 2 3 4))").ToString());
Assert.Equal("(2 3 4 5 6 7)", e.eval("(append (list 2 3 4) (list 5 6 7))").ToString());
Assert.Equal("(1 2 3 4 5 6 7)", e.eval("(qsort (lambda (a b) (> a b)) (list 5 4 7 3 2 6 1))").ToString());
} }
} }
} }