193 lines
4.9 KiB
Plaintext
193 lines
4.9 KiB
Plaintext
(
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(globals . (
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(mac . [define mac
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(litmac litfn () ((m . params) . body)
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`(define ,m
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(litmac litfn () ,params ,@body)))])
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(def . [mac (def (name . params) . body)
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`(define ,name (fn ,params ,@body))])
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(do . [mac (do . body)
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`((fn () ,@body))])
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(let . [mac (let var val . body)
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`((fn (,var) ,@body) ,val)])
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(when . [mac (when cond . body)
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`(if ,cond (do ,@body) ())])
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(iflet . [mac (iflet var expr then else)
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`(let ,var ,expr
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(if ,var ,then ,else))])
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(aif . [mac (aif expr then else)
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`(iflet it ,expr ,then ,else)])
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(forever . [mac (forever . body)
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`(while 1 ,@body)])
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(list . [def (list . args)
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# we should probably make a copy here
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args])
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(ret . [mac (ret var val . body)
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`(let ,var ,val ,@body ,var)])
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(nth . [def (nth n xs)
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if (n < 1)
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(car xs)
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(nth n-1 (cdr xs))])
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(map1 . [def (map1 f xs)
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if (no xs)
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()
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(cons (f (car xs))
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(map1 f (cdr xs)))])
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(compose . [def (compose f g)
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(fn args
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(f (apply g args)))])
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(caar . [define caar (compose car car)])
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(cadr . [define cadr (compose car cdr)])
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(cddr . [define cddr (compose cdr cdr)])
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(cdar . [define cdar (compose cdr car)])
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(some . [def (some f xs)
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if (no xs)
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()
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if (f (car xs))
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xs
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(some f (cdr xs))])
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(any . [define any some])
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(all . [def (all f xs)
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if (no xs)
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1
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if (f (car xs))
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(all f (cdr xs))
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()])
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(find . [def (find x xs)
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if (no xs)
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()
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if (x = (car xs))
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1
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(find x (cdr xs))])
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(pair . [def (pair xs)
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if (no xs)
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()
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if (no (cdr xs))
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(list (list (car xs)))
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(cons (list (car xs) (cadr xs))
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(pair (cddr xs)))])
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(with . [mac (with bindings . body)
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`((fn ,(map1 car (pair bindings))
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,@body)
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,@(map1 cadr (pair bindings)))])
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(afn . [mac (afn params . body)
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`(let self ()
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(set self (fn ,params ,@body)))])
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(seq . [def (seq n)
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((afn (i)
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(if (i > n)
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()
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(cons i (self i+1))))
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1)])
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(each . [mac (each x xs . body)
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`(walk ,xs (fn (,x) ,@body))])
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(walk . [def (walk xs f)
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when xs
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(f (car xs))
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(walk (cdr xs) f)])
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(rem . [def (rem f xs)
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if (no xs)
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()
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let rest (rem f (cdr xs))
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if (f (car xs))
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rest
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(cons (car xs) rest)])
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(keep . [def (keep f xs)
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if (no xs)
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()
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let rest (keep f (cdr xs))
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if (f (car xs))
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(cons (car xs) rest)
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rest])
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(alist? . [def (alist? x)
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(and (cons? x)
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(cons? (car x)))])
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(assoc . [def (assoc alist key)
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if (no alist)
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()
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if (key = (caar alist))
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(car alist)
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(assoc (cdr alist) key)])
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(get . [def (get alist key)
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aif (assoc alist key)
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(cdr it)
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()])
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(++ . [mac (++ var) `(set ,var (,var + 1))])
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(+= . [mac (var += inc)
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`(set ,var (,var + ,inc))])
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(for . [mac (for var init test update . body)
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`(let ,var ,init
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(while ,test
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,@body
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,update))])
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(grid . [def (grid m n val)
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ret g (populate n ())
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for i 0 (< i n) ++i
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iset g i (populate m val)])
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(indexgrid . [def (indexgrid g x y)
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(index (index g y) x)])
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(isetgrid . [def (isetgrid g x y val)
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iset (index g y) x val])
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(hborder . [def (hborder scr y color)
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(hline scr y 0 (width scr) color)])
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(vborder . [def (vborder scr x color)
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(vline scr x 0 (height scr) color)])
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(read_line . [def (read_line keyboard)
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ret str (stream)
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let c (key keyboard)
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while (not (or (c = 0) (c = 10)))
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(write str c)
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(set c (key keyboard))])
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(wait . [def (wait keyboard)
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while (= 0 (key keyboard))
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()])
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(sq . [def (sq n) (n * n)])
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(cube . [def (cube n) (n * n * n)])
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(fill_rect . [def (fill_rect screen x1 y1 x2 y2 color)
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for y y1 (y < y2) ++y
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(hline screen y x1 x2 color)])
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(ring . [def (ring screen cx cy r0 w clr)
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for r r0 (r < r0+w) ++r
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(circle screen cx cy r clr)])
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(Greys . [define Greys
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ret p (populate 16 ())
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for i 0 (< i 16) ++i
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iset p i i+16])
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(Pinks . [define Pinks (array
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84 85 59 60 61
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13 36 37 5 108)])
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(palette . [def (palette p i)
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(index p (i % (len p)))])
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(pat . [def (pat screen)
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with (w (width screen)
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h (height screen))
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for y 0 (y < h) ++y
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for x 0 (x < w) ++x
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(pixel screen x y (palette Greys x*y))])
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(main . [def (main screen keyboard)
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(pat screen)])
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(lifreres . [define liferes 8])
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(life . [def (life screen)
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let g (grid (/ (width screen) liferes)
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(/ (height screen) liferes)
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0)
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isetgrid g 5 5 1
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isetgrid g 6 5 1
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isetgrid g 4 6 1
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isetgrid g 5 6 1
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isetgrid g 5 7 1
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while 1
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steplife g
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renderlife screen g])
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(steplife . [def (steplife g)
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])
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(renderlife . [def (renderlife screen g)
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with (w (width screen)
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h (height screen))
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for y 0 (< y h) ++y
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for x 0 (< x w) ++x
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(pixel screen x y (indexgrid g x/liferes y/liferes))])
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))
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(sandbox . [life screen])
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)
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