Spectra/snark-20120808r02/examples/reverse-example.lisp
Naveen Sundar Govindarajulu 8c78a2f8e5 First commits.
2017-01-14 22:08:51 -05:00

51 lines
1.7 KiB
Common Lisp

;;; -*- Mode: Lisp; Syntax: Common-Lisp; Package: snark-user -*-
;;; File: reverse-example.lisp
;;; The contents of this file are subject to the Mozilla Public License
;;; Version 1.1 (the "License"); you may not use this file except in
;;; compliance with the License. You may obtain a copy of the License at
;;; http://www.mozilla.org/MPL/
;;;
;;; Software distributed under the License is distributed on an "AS IS"
;;; basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the
;;; License for the specific language governing rights and limitations
;;; under the License.
;;;
;;; The Original Code is SNARK.
;;; The Initial Developer of the Original Code is SRI International.
;;; Portions created by the Initial Developer are Copyright (C) 1981-2006.
;;; All Rights Reserved.
;;;
;;; Contributor(s): Mark E. Stickel <stickel@ai.sri.com>.
(in-package :snark-user)
(defun reverse-example (&key (length 3) magic)
(let ((l nil))
(dotimes (i length)
(push i l))
(initialize)
(declare-function '$$cons 2 :new-name 'cons)
(declare-function '$$list :any :new-name 'list)
(declare-function '$$list* :any :new-name 'list*)
(cond
(magic
(use-hyperresolution t)
(use-magic-transformation t))
(t
(use-resolution t)
(assert-supported nil)
(assert-sequential t)
(print-rows-shortened t)))
(assert '(reverse nil nil))
(assert '(implied-by
(reverse (cons ?x ?l) ?l1)
(and
(reverse ?l ?l2)
(append ?l2 (cons ?x nil) ?l1))))
(assert '(append nil ?l ?l))
(assert '(implied-by
(append (cons ?x ?l1) ?l2 (cons ?x ?l3))
(append ?l1 ?l2 ?l3)))
(prove `(reverse (list ,@l) ?l) :answer '(values ?l))))
;;; reverse-example.lisp EOF