examples/zebra.lisp @ 1dd07907df49

Implement the stack, register designators, and track permanent vars

Still need to implement the machine code changes to handle permanent vars, as
well as the allocation instructions.
author Steve Losh <steve@stevelosh.com>
date Fri, 15 Apr 2016 20:28:35 +0000
parents ae2b13a9a629
children (none)
(in-package #:bones.paip)

(clear-db)

(rule (member ?item (?item . ?)))
(rule (member ?item (? . ?rest))
      (member ?item ?rest))

(rule (next-to ?x ?y ?list)
      (in-order ?x ?y ?list))

(rule (next-to ?x ?y ?list)
      (in-order ?y ?x ?list))

(rule (in-order ?x ?y (?x ?y . ?)))
(rule (in-order ?x ?y (? . ?rest))
      (in-order ?x ?y ?rest))

(rule (= ?x ?x))

(rule
 (zebra ?houses ?water-drinker ?zebra-owner)
 ;; Houses are of the form:
 ;; (HOUSE ?country ?pet ?cigarette ?drink ?color)

 (= ?houses
    ((house norway ? ? ? ?)
     ?
     (house ? ? ? milk ?)
     ?
     ?))

 (member   (house england ?      ?            ?            red   ) ?houses)
 (member   (house spain   dog    ?            ?            ?     ) ?houses)
 (member   (house ?       ?      ?            coffee       green ) ?houses)
 (member   (house ukraine ?      ?            tea          ?     ) ?houses)
 (member   (house ?       snails winston      ?            ?     ) ?houses)
 (member   (house ?       ?      kools        ?            yellow) ?houses)
 (member   (house ?       ?      lucky-strike orange-juice ?     ) ?houses)
 (member   (house japan   ?      parliaments  ?            ?     ) ?houses)
 (in-order (house ?       ?      ?            ?            ivory )
           (house ?       ?      ?            ?            green ) ?houses)
 (next-to  (house ?       ?      chesterfield ?            ?     )
           (house ?       fox    ?            ?            ?     ) ?houses)
 (next-to  (house ?       ?      kools        ?            ?     )
           (house ?       horse  ?            ?            ?     ) ?houses)
 (next-to  (house norway  ?      ?            ?            ?     )
           (house ?       ?      ?            ?            blue  ) ?houses)

 (member (house ?water-drinker ? ? water ?) ?houses)
 (member (house ?zebra-owner zebra ? ? ?) ?houses))

(time (query-all (zebra ?houses ?water ?zebra)))
; (declaim (optimize (speed 3) (safety 0)))