/usr/share/acl2-6.5/books/tools/def-functional-instance.lisp is in acl2-books-source 6.5-2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 | ; Def-functional-instance: automates defining theorems that are functional
; instances of existing ones.
; Copyright (C) 2010 Centaur Technology
;
; Contact:
; Centaur Technology Formal Verification Group
; 7600-C N. Capital of Texas Highway, Suite 300, Austin, TX 78731, USA.
; http://www.centtech.com/
;
; License: (An MIT/X11-style license)
;
; Permission is hereby granted, free of charge, to any person obtaining a
; copy of this software and associated documentation files (the "Software"),
; to deal in the Software without restriction, including without limitation
; the rights to use, copy, modify, merge, publish, distribute, sublicense,
; and/or sell copies of the Software, and to permit persons to whom the
; Software is furnished to do so, subject to the following conditions:
;
; The above copyright notice and this permission notice shall be included in
; all copies or substantial portions of the Software.
;
; THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
; IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
; FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
; AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
; LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
; FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
; DEALINGS IN THE SOFTWARE.
;
; Original author: Sol Swords <sswords@centtech.com>
(in-package "ACL2")
(include-book "bstar")
(defun look-for-goal-hint (hints)
(if (atom hints)
nil
(or (and (consp (car hints))
(stringp (caar hints))
(standard-char-listp (coerce (caar hints) 'list))
(equal (string-upcase (caar hints)) "GOAL"))
(look-for-goal-hint (cdr hints)))))
(defun def-functional-instance-fn
(newname oldname subst hints rule-classes rule-classesp state)
(declare (xargs :stobjs state
:mode :program))
(b* ((world (w state))
(body (fgetprop oldname 'theorem nil world))
(rule-classes (if rule-classesp
rule-classes
(fgetprop oldname 'classes nil world)))
((unless body)
(er soft 'def-functional-instance-fn
"Theorem ~x0 not found in the ACL2 world" oldname))
(alist (pairlis$ (strip-cars subst)
(strip-cadrs subst)))
(new-body (sublis alist body))
(untrans-body (untranslate new-body nil world))
(form `(defthm ,newname
,untrans-body
:hints (("goal" :use
((:functional-instance
,oldname
. ,subst)))
. ,hints)
:rule-classes ,rule-classes)))
(and (look-for-goal-hint hints)
(cw "WARNING: In DEF-FUNCTIONAL-INSTANCE, any user-provided hint ~
keyed on subgoal \"GOAL\" will be ignored. If your proof fails, please try ~
again with a computed hint or a subgoal specifier other than \"GOAL\". "))
(value form)))
(defmacro def-functional-instance
(newname oldname subst &key hints (rule-classes 'nil rule-classesp))
":Doc-section Events
Functionally instantiate a pre-existing theorem to prove a new one.~/
Usage:
~bv[]
(def-functional-instance
new-thm-name
orig-thm-name
((orig-fn substitute-fn) ...)
:hints (...) ;; optional
:rule-classes rule-classes) ;; optional
~ev[]
Def-functional-instance attempts to define a new theorem based on functionally
instantiating an existing one with a user-provided function substitution. It
looks up the body of the theorem named ORIG-THM-NAME in the ACL2 world and
applies the functional substitution, replacing each ORIG-FN with SUBSTITUTE-FN
in the theorem body. It then submits this as a new theorem named NEW-THM-NAME
with a hint to prove it using a functional instance of the original theorem.
This theorem has either the given rule-classes or, if this argument is omitted,
the rule-classes of the original theorem.
Sometimes further hints are needed to show that the functional instantiation is
valid. These may be given by the :hints keyword. Note, however, that there is
already a hint provided at \"goal\", so that if one of the user-provided hints
uses this as its subgoal specifier, this hint will be ignored. The extra hints
given should either be computed hints or reference later subgoals. ~/~/
"
`(make-event
(def-functional-instance-fn
',newname ',oldname ',subst ',hints ',rule-classes ',rule-classesp state)))
|