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; Milawa - A Reflective Theorem Prover
; Copyright (C) 2005-2009 Kookamara LLC
;
; Contact:
;
; Kookamara LLC
; 11410 Windermere Meadows
; Austin, TX 78759, USA
; http://www.kookamara.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: Jared Davis <jared@kookamara.com>
(in-package "ACL2")
(defttag redef-okp)
;; We allow certify-book even if redef has been set previously. This is
;; obviously unsound!
(progn!
(set-raw-mode t)
(defun chk-acceptable-certify-book (book-name full-book-name k ctx state
suspect-book-action-alist)
; This function determines that it is ok to run certify-book on
; full-book-name and k. Unless an error is caused we return a pair
; (cmds . pre-alist) that contains the two parts of the portcullis.
; If k is t it means that the existing certificate file specifies the
; intended portcullis. It also means that there must be such a file
; and that we are in the ground zero state. If all those things check
; out, we will actually carry out the portcullis to get into the right
; state by the time we return.
(let ((names
; Warning: If you change the list of names below, be sure to change it
; in the call of note-certification-world in certify-book-fn.
(cons 'defpkg *primitive-event-macros*))
(wrld (w state)))
(er-progn
(cond ((ld-skip-proofsp state)
(er soft ctx
"Certify-book must be called with ld-skip-proofsp set to nil."))
((f-get-global 'in-local-flg state)
(er soft ctx
"Certify-book may not be called inside a LOCAL command."))
((global-val 'skip-proofs-seen wrld)
(er soft ctx
"At least one command in the current ACL2 world was executed ~
while the value of state global variable '~x0 was not ~
nil:~|~% ~y1~%(If you did not explicitly use ~
set-ld-skip-proofsp or call ld with :ld-skip-proofsp not ~
nil, then some other function did so, for example, rebuild.) ~
Certification is therefore not allowed in this world. If ~
the intention was for proofs to be skipped for one or more ~
events in the certification world, consider wrapping those ~
events explicitly in skip-proofs forms. See :DOC ~
skip-proofs."
'ld-skip-proofsp
(global-val 'skip-proofs-seen wrld)))
((ttag wrld)
; We disallow active ttag at certification time because we don't want to think
; about certain oddly redundant defttag events. Consider for example executing
; (defttag foo), and then certifying a book containing the following forms,
; (certify-book "foo" 1 nil :ttags ((foo nil))), indicating that ttag foo is
; only active at the top level, not inside a book.
; (defttag foo)
; (defun f ()
; (declare (xargs :mode :program))
; (sys-call "ls" nil))
; The defttag expands to a redundant table event, hence would be allowed.
; Perhaps this is OK, but it is rather scary since we then have a case of a
; book containing a defttag of which there is no evidence of this in any "TTAG
; NOTE" string or in the book's certificate. While we see no real problem
; here, since the defttag really is ignored, still it's very easy for the user
; to work around this situation by executing (defttag nil) before
; certification; so we take this conservative approach.
(er soft ctx
"It is illegal to certify a book while there is an active ~
ttag, in this case, ~x0. Consider undoing the corresponding ~
defttag event (see :DOC ubt) or else executing ~x1. See ~
:DOC defttag."
(ttag wrld)
'(defttag nil)))
(t (value nil)))
(chk-book-name book-name full-book-name ctx state)
(er-let*
((certp (certificate-filep full-book-name state)))
(mv-let
(erp cmds wrld-segs wrld-list state)
(get-portcullis-cmds wrld nil nil nil names ctx state)
(cond
(erp (silent-error state))
((eq k t)
(cond
(cmds
(er soft ctx
"When you tell certify-book to recover the certification world ~
from the old certificate, you must call certify-book in the ~
initial ACL2 logical world -- so we don't have to worry about ~
the certification world clashing with the existing logical ~
world. But you are not in the initial logical world. Use ~
:pbt 1 to see the world."))
((not certp)
(er soft ctx
"There is no certificate on file for ~x0. But you told ~
certify-book to recover the certi~-fication world from the ~
old certificate. You will have to construct the ~
certi~-fication world by hand (by executing the desired ~
commands in the current logical world) and then call ~
certify-book again."
full-book-name))
(t
; So k is t, we are in the initial world, and there is a certificate file
; from which we can recover the portcullis. Do it.
(er-let*
((cert-obj
(chk-certificate-file full-book-name t ctx state
(cons '(:uncertified-okp . nil)
suspect-book-action-alist)
t))
(cert-obj-cmds (value (and cert-obj
(access cert-obj cert-obj :cmds)))))
(chk-acceptable-certify-book1 full-book-name
(length cert-obj-cmds) ;; k
cert-obj-cmds ;; cmds
:omitted ;; wrld-segs
wrld-list
names
(w state)
ctx state)))))
(t (chk-acceptable-certify-book1 full-book-name k cmds wrld-segs
wrld-list names wrld ctx
state)))))))))
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