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|
; Standard Utilities Library
; Copyright (C) 2008-2014 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.
; wizard.lisp
;
; Original authors: Jared Davis <jared@centtech.com>
; Sol Swords <sswords@centtech.com>
(in-package "ACL2")
(include-book "da-base")
;; (include-book "deflist")
(include-book "clause-processors/unify-subst" :dir :system)
(std::def-primitive-aggregate wizadvice
(pattern ;; pattern to match
restrict ;; syntactic restrictions required on resulting sigma
msg ;; message to print
args ;; some sigma variables to be bound
)
:tag :advice-form)
;; (std::deflist wizadvicelist-p (x)
;; (wizadvice-p x)
;; :guard t)
(mutual-recursion
(defun collect-matches-from-term (pattern x acc)
;; Returns a list of sigmas
(b* (((mv matchp sigma)
(simple-one-way-unify pattern x nil))
(acc (if matchp (cons sigma acc) acc))
((when (or (atom x)
(eq (car x) 'quote)))
acc))
(collect-matches-from-term-list pattern (cdr x) acc)))
(defun collect-matches-from-term-list (pattern x acc)
;; Returns a list of sigmas
(b* (((when (atom x))
acc)
(acc (collect-matches-from-term pattern (car x) acc)))
(collect-matches-from-term-list pattern (cdr x) acc))))
(defun simpler-trans-eval (x alist state)
(declare (xargs :stobjs state :mode :program))
(b* (((mv er (cons ?trans eval))
(simple-translate-and-eval-error-double
x alist nil
(msg "Term was ~x0" x)
'simpler-trans-eval
(w state)
state
t
(f-get-global 'safe-mode state)
(gc-off state))))
(or (not er)
(er hard? 'simpler-trans-eval
"Evaluation somehow failed for ~x0: ~@1" x er))
eval))
(defun simpler-trans-eval-list (x alist state)
(declare (xargs :stobjs state :mode :program))
(b* (((mv er (cons ?trans eval))
(simple-translate-and-eval-error-double x alist nil
(msg "Term was ~x0" x)
'simpler-trans-eval
(w state)
state
t
(f-get-global 'safe-mode state)
(gc-off state))))
(or (not er)
(er hard? 'simpler-trans-eval
"Evaluation somehow failed for ~x0: ~@1" x er))
eval))
;; (simpler-trans-eval '(consp x) '((x . nil)) state)
;; (simpler-trans-eval '(consp x) '((x . (1 . 2))) state)
(defun filter-sigmas-by-restriction (restrict sigmas state)
(declare (xargs :stobjs state :mode :program))
(b* (((when (atom sigmas))
nil)
(evaluation
(simpler-trans-eval restrict (car sigmas) state))
((unless evaluation)
(filter-sigmas-by-restriction restrict (cdr sigmas) state))
(rest
(filter-sigmas-by-restriction restrict (cdr sigmas) state)))
(cons (car sigmas) rest)))
;; (filter-sigmas-by-restriction '(quotep x)
;; (collect-matches-from-term '(foo x)
;; '(if '3 (cons (foo '1) 'nil) (cons (foo (foo '2)) 't))
;; nil)
;; state)
(defun wizard-print-advice (sigma advice state)
(declare (xargs :stobjs state :mode :program))
(b* (((wizadvice advice) advice)
(args-evaled (simpler-trans-eval advice.args sigma state))
(msg (cons (concatenate 'string "~|~%Wizard: " advice.msg "~%")
(pairlis2 '(#\0 #\1 #\2 #\3 #\4 #\5 #\6 #\7 #\8 #\9) args-evaled))))
(cw "~@0" msg)
nil))
(defun wizard-print-advice-list (sigmas advice state)
(declare (xargs :stobjs state :mode :program))
(if (atom sigmas)
nil
(prog2$ (wizard-print-advice (car sigmas) advice state)
(wizard-print-advice-list (cdr sigmas) advice state))))
(defun wizard-do-advice (clause advice state)
(declare (xargs :stobjs state :mode :program))
(b* (((wizadvice advice) advice)
(sigmas (collect-matches-from-term-list advice.pattern clause nil))
(sigmas (remove-duplicates-equal sigmas))
(sigmas
(if advice.restrict
(filter-sigmas-by-restriction advice.restrict sigmas state)
sigmas)))
(wizard-print-advice-list sigmas advice state)))
(defun wizard-do-advice-list (clause advices state)
(declare (xargs :stobjs state :mode :program))
(if (atom advices)
nil
(prog2$ (wizard-do-advice clause (car advices) state)
(wizard-do-advice-list clause (cdr advices) state))))
(table wizard-advice)
(defun get-wizard-advice (world)
(cdr (assoc 'wizadvice (table-alist 'wizard-advice world))))
(defmacro add-wizard-advice (&key pattern restrict msg args)
`(table wizard-advice 'wizadvice
(cons (make-wizadvice :pattern ',pattern
:restrict ',restrict
:msg ,msg
:args ',args)
(get-wizard-advice world))))
(defun wizard-fn (stable-under-simplificationp clause state)
(declare (xargs :stobjs state :mode :program))
(if (not stable-under-simplificationp)
nil
(let ((advices (get-wizard-advice (w state))))
(prog2$ (wizard-do-advice-list clause advices state)
nil))))
(defmacro wizard ()
`(wizard-fn stable-under-simplificationp clause state))
(defmacro enable-wizard ()
`(add-default-hints '((wizard))))
#|
;; Example:
(enable-wizard)
(add-wizard-advice :pattern (logbitp x const)
:restrict (and (quotep const)
(< 1 (logcount (unquote const))))
:msg "Possibly enable OPEN-LOGBITP-OF-CONST-META to match ~x0; this may cause a ~x1-way case split."
:args (list `(logbitp ,x ,const)
(logcount (unquote const))))
(defstub foo (x) t)
(local (in-theory (disable logbitp)))
(defthm crock
(implies (logbitp bit #b111000111000)
(foo bit)))
|#
|
