diff options
| -rw-r--r-- | shell/README.md | 6 | ||||
| -rw-r--r-- | shell/iterative-definitions.limg | 80 | ||||
| -rw-r--r-- | shell/recursive-definitions.limg | 94 |
3 files changed, 180 insertions, 0 deletions
diff --git a/shell/README.md b/shell/README.md index 3da63cf4..511a7348 100644 --- a/shell/README.md +++ b/shell/README.md @@ -26,6 +26,12 @@ Load an s-expression into it: $ echo '(+ 1 1)' |dd of=data.img conv=notrunc ``` +You can also try one of the files of definitions in this directory (`*.limg`). + +```sh +$ cat iter.limg |dd of=data.img conv=notrunc +``` + Now run with both code and data disks: ```sh $ qemu-system-i386 -enable-kvm -hda code.img -hdb data.img diff --git a/shell/iterative-definitions.limg b/shell/iterative-definitions.limg new file mode 100644 index 00000000..315f12b0 --- /dev/null +++ b/shell/iterative-definitions.limg @@ -0,0 +1,80 @@ +( + (globals . ( + (hline1 . (fn () (screen y lo hi color) + (while (< lo hi) + (pixel screen lo y color) + (set lo (+ lo 1))))) + (vline1 . (fn () (screen x lo hi color) + (while (< lo hi) + (pixel screen x lo color) + (set lo (+ lo 1))))) + (hline . (fn () (screen y color) + (hline1 screen y 0 (width screen) color))) + (vline . (fn () (screen y color) + (vline1 screen y 0 (height screen) color))) + (andf . (fn () (a b) + (if a + (if b + 1 + ()) + ()))) + (orf . (fn () (a b) + (if a + a + b))) + (brline . (fn () (screen x0 y0 x1 y1 color) + ((fn (dx dy sx sy) + ((fn (err) + (brline1 screen x0 y0 x1 y1 dx dy sx sy err color)) + (+ dx dy))) + (abs (- x1 x0)) + (- 0 (abs (- y1 y0))) + (sgn (- x1 x0)) + (sgn (- y1 y0))))) + (brline1 . (fn () (screen x y xmax ymax dx dy sx sy err color) + (while (orf (< x xmax) (< y ymax)) + (pixel screen x y color) + ((fn (e2) + (if (>= e2 dy) + (set x (+ x sx)) + ()) + (if (<= e2 dx) + (set y (+ y sy))) + (set err (+ err + (+ + (if (>= e2 dy) + dy + 0) + (if (<= e2 dx) + dx + 0))))) + (* err 2))))) + (read_line_2 . (fn () (keyboard stream) + ((fn (c) + (if (= c 10) + stream + (if (= c 0) + stream + (read_line_2 keyboard (write stream c))))) + (key keyboard)))) + (read_line . (fn () (keyboard) + (read_line_2 keyboard (stream)))) + (fill_rect . (fn () (screen x1 y1 x2 y2 fill_color) + (while (< y1 y2) + (hline1 screen y1 x1 x2 fill_color) + (set y1 (+ y1 1))))) + (chessboard . (fn () (screen px) + (chessboard1 screen px 0 15))) + (chessboard1 . (fn () (screen px y color) + (while (< y (height screen)) + (chessboard2 screen px y 0 color) + (set y (+ y px)) + (set color (- 15 color))))) + (chessboard2 . (fn () (screen px y x color) + (while (< x (width screen)) + (fill_rect screen x y (+ x px) (+ y px) color) + (set x (+ x px)) + (set color (- 15 color))))) + )) + (sandbox . (+ 1 2)) +) diff --git a/shell/recursive-definitions.limg b/shell/recursive-definitions.limg new file mode 100644 index 00000000..cef17c49 --- /dev/null +++ b/shell/recursive-definitions.limg @@ -0,0 +1,94 @@ +( + (globals . ( + (hline1 . (fn () (screen y lo hi color) + (if (>= lo hi) + () + ((fn () + (pixel screen lo y color) + (hline1 screen y (+ lo 1) hi color)))))) + (vline1 . (fn () (screen x lo hi color) + (if (>= lo hi) + () + ((fn () + (pixel screen x lo color) + (vline1 screen x (+ lo 1) hi color)))))) + (hline . (fn () (screen y color) + (hline1 screen y 0 (width screen) color))) + (vline . (fn () (screen y color) + (vline1 screen y 0 (height screen) color))) + (andf . (fn () (a b) + (if a + (if b + 1 + ()) + ()))) + (brline . (fn () (screen x0 y0 x1 y1 color) + ((fn (dx dy sx sy) + ((fn (err) + (brline1 screen x0 y0 x1 y1 dx dy sx sy err color)) + (+ dx dy))) + (abs (- x1 x0)) + (- 0 (abs (- y1 y0))) + (sgn (- x1 x0)) + (sgn (- y1 y0))))) + (brline1 . (fn () (screen x y xmax ymax dx dy sx sy err color) + (pixel screen x y color) + (if (andf (= x xmax) (= y ymax)) + () + ((fn (e2) + (brline1 screen + (if (>= e2 dy) + (+ x sx) + x) + (if (<= e2 dx) + (+ y sy) + y) + xmax + ymax + dx + dy + sx + sy + (+ err + (+ + (if (>= e2 dy) + dy + 0) + (if (<= e2 dx) + dx + 0))) + color)) + (* err 2))))) + (read_line_2 . (fn () (keyboard stream) + ((fn (c) + (if (= c 10) + stream + (if (= c 0) + stream + (read_line_2 keyboard (write stream c))))) + (key keyboard)))) + (read_line . (fn () (keyboard) + (read_line_2 keyboard (stream)))) + (fill_rect . (fn () (screen x1 y1 x2 y2 fill_color) + (if (>= y1 y2) + () + ((fn () + (hline1 screen y1 x1 x2 fill_color) + (fill_rect screen x1 (+ y1 1) x2 y2 fill_color)))))) + (chessboard . (fn () (screen px) + (chessboard1 screen px 0 15))) + (chessboard1 . (fn () (screen px y color) + (if (>= y (height screen)) + () + ((fn () + (chessboard2 screen px y 0 color) + (chessboard1 screen px (+ y px) (- 15 color))))))) + (chessboard2 . (fn () (screen px y x color) + (if (>= x (width screen)) + () + ((fn () + (fill_rect screen x y (+ x px) (+ y px) color) + (chessboard2 screen px y (+ x px) (- 15 color))))))) + )) + (sandbox . (+ 1 2)) +) |