/usr/share/acl2-8.0dfsg/books/system/bind-macro-args.lisp is in acl2-books-source 8.0dfsg-1.
This file is owned by root:root, with mode 0o644.
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; Written by Matt Kaufmann
; License: A 3-clause BSD license. See the LICENSE file distributed with ACL2.
; A nice challenge would be to verify guards in this book.
(in-package "ACL2")
(include-book "pseudo-good-worldp") ; :logic mode macro-args-structurep etc.
(include-book "verified-termination-and-guards") ; :logic mode er-cmp-fn
(include-book "kestrel") ; :logic mode macro-args
(verify-termination warning-off-p1) ; and guards
(verify-termination warning1-cw) ; and guards
(verify-termination duplicate-keys-action) ; and guards
(local ; could be useful towards verifying guards
(defthm keyword-value-listp-remove-keyword
(implies (keyword-value-listp x)
(keyword-value-listp (remove-keyword key x)))))
(local ; could be useful towards verifying guards
(defthm keyword-value-listp-cddr-assoc-keyword
(implies (keyword-value-listp x)
(keyword-value-listp (cddr (assoc-keyword key x))))))
(defun bind-macro-args-keys1 (args actuals allow-flg alist form wrld
state-vars)
; We need parameter state-vars because of the call of warning$-cw1 below.
(declare (xargs :guard (and (true-listp args)
(macro-arglist-keysp args nil)
(keyword-value-listp actuals)
(symbol-alistp alist)
(true-listp form)
(symbolp (car form))
(plist-worldp wrld)
(symbol-alistp
(table-alist 'duplicate-keys-action-table
wrld))
(weak-state-vars-p state-vars))
:verify-guards nil))
(cond ((endp args)
(cond ((or (null actuals) allow-flg)
(value-cmp alist))
(t (er-cmp *macro-expansion-ctx*
"Illegal key/value args ~x0 in macro expansion of ~
~x1. The argument list for ~x2 is ~%~F3."
actuals form
(car form)
(macro-args (car form) wrld)))))
((eq (car args) '&allow-other-keys)
(value-cmp alist))
(t (let* ((formal (cond ((atom (car args))
(car args))
((atom (caar args))
(caar args))
(t (cadr (caar args)))))
(key (cond ((atom (car args))
(intern (symbol-name (car args))
"KEYWORD"))
((atom (car (car args)))
(intern (symbol-name (caar args))
"KEYWORD"))
(t (caaar args))))
(tl (assoc-keyword key actuals))
(alist (cond ((and (consp (car args))
(= 3 (length (car args))))
(cons (cons (caddr (car args))
(not (null tl)))
alist))
(t alist)))
(name (car form))
(duplicate-keys-action
(and (assoc-keyword key (cddr tl))
(duplicate-keys-action name wrld)))
(er-or-warn-string
"The keyword argument ~x0 occurs twice in ~x1. This ~
situation is explicitly allowed in Common Lisp (see ~
CLTL2, page 80) but it often suggests a mistake was ~
made.~@2 See :DOC set-duplicate-keys-action."))
(prog2$
(and (eq duplicate-keys-action :warning)
(warning$-cw1 *macro-expansion-ctx* "Duplicate-Keys"
er-or-warn-string
key
form
" The leftmost value for ~x0 is used."))
(cond
((eq duplicate-keys-action :error)
(er-cmp *macro-expansion-ctx*
er-or-warn-string
key form ""))
(t
(bind-macro-args-keys1
(cdr args)
(remove-keyword key actuals)
allow-flg
(cons (cons formal
(cond (tl (cadr tl))
((atom (car args))
nil)
((> (length (car args)) 1)
(cadr (cadr (car args))))
(t nil)))
alist)
form wrld state-vars))))))))
(defun chk-length-and-keys (actuals form wrld)
(declare (xargs :guard (and (true-listp actuals)
(true-listp form)
(symbolp (car form))
(plist-worldp wrld))
:measure (acl2-count actuals)))
(cond ((endp actuals)
(value-cmp nil))
((null (cdr actuals))
(er-cmp *macro-expansion-ctx*
"A non-even key/value arglist was encountered while macro ~
expanding ~x0. The argument list for ~x1 is ~%~F2."
form
(car form)
(macro-args (car form) wrld)))
((keywordp (car actuals))
(chk-length-and-keys (cddr actuals) form wrld))
(t (er-cmp *macro-expansion-ctx*
"A non-keyword was encountered while macro expanding ~x0 ~
where a keyword was expected. The formal parameters list ~
for ~x1 is ~%~F2."
form
(car form)
(macro-args (car form) wrld)))))
(defun bind-macro-args-keys (args actuals alist form wrld state-vars)
(declare (xargs :guard (and (true-listp args)
(macro-arglist-keysp args nil)
(true-listp actuals)
(symbol-alistp alist)
(true-listp form)
(plist-worldp wrld)
(weak-state-vars-p state-vars))
:verify-guards nil))
(er-progn-cmp
(chk-length-and-keys actuals form wrld)
(cond ((assoc-keyword :allow-other-keys
(cdr (assoc-keyword :allow-other-keys
actuals)))
(er-cmp *macro-expansion-ctx*
"ACL2 prohibits multiple :allow-other-keys because ~
implementations differ significantly concerning which ~
value to take."))
(t (value-cmp nil)))
(bind-macro-args-keys1
args actuals
(let ((tl
(assoc-keyword :allow-other-keys actuals)))
(and tl (cadr tl)))
alist form wrld state-vars)))
(defun bind-macro-args-after-rest (args actuals alist form wrld state-vars)
(declare (xargs :guard (and (true-listp args)
(macro-arglist-after-restp args)
(true-listp actuals)
(symbol-alistp alist)
(true-listp form)
(plist-worldp wrld)
(weak-state-vars-p state-vars))
:verify-guards nil))
(cond
((endp args) (value-cmp alist))
((eq (car args) '&key)
(bind-macro-args-keys (cdr args) actuals alist form wrld state-vars))
(t (er-cmp *macro-expansion-ctx*
"Only keywords and values may follow &rest or &body; error in ~
macro expansion of ~x0."
form))))
(defun bind-macro-args-optional (args actuals alist form wrld state-vars)
(declare (xargs :guard (and (true-listp args)
(macro-arglist-optionalp args)
(true-listp actuals)
(symbol-alistp alist)
(true-listp form)
(plist-worldp wrld)
(weak-state-vars-p state-vars))
:verify-guards nil))
(cond ((endp args)
(cond ((null actuals)
(value-cmp alist))
(t (er-cmp *macro-expansion-ctx*
"Wrong number of args in macro expansion of ~x0."
form))))
((eq (car args) '&key)
(bind-macro-args-keys (cdr args) actuals alist form wrld state-vars))
((member (car args) '(&rest &body))
(bind-macro-args-after-rest
(cddr args) actuals
(cons (cons (cadr args) actuals) alist)
form wrld state-vars))
((symbolp (car args))
(bind-macro-args-optional
(cdr args) (cdr actuals)
(cons (cons (car args) (car actuals))
alist)
form wrld state-vars))
(t (let ((alist (cond ((equal (length (car args)) 3)
(cons (cons (caddr (car args))
(not (null actuals)))
alist))
(t alist))))
(bind-macro-args-optional
(cdr args) (cdr actuals)
(cons (cons (car (car args))
(cond (actuals (car actuals))
((>= (length (car args)) 2)
(cadr (cadr (car args))))
(t nil)))
alist)
form wrld state-vars)))))
(defun bind-macro-args1 (args actuals alist form wrld state-vars)
(declare (xargs :guard (and (true-listp args)
(macro-arglist1p args)
(true-listp form)
(symbol-alistp alist)
(plist-worldp wrld)
(weak-state-vars-p state-vars))
:verify-guards nil))
(cond ((endp args)
(cond ((null actuals)
(value-cmp alist))
(t (er-cmp *macro-expansion-ctx*
"Wrong number of args in macro expansion of ~x0."
form))))
((member-eq (car args) '(&rest &body))
(bind-macro-args-after-rest
(cddr args) actuals
(cons (cons (cadr args) actuals) alist)
form wrld state-vars))
((eq (car args) '&optional)
(bind-macro-args-optional (cdr args) actuals alist form wrld
state-vars))
((eq (car args) '&key)
(bind-macro-args-keys (cdr args) actuals alist form wrld state-vars))
((null actuals)
(er-cmp *macro-expansion-ctx*
"Wrong number of args in macro expansion of ~x0."
form))
(t (bind-macro-args1 (cdr args) (cdr actuals)
(cons (cons (car args) (car actuals))
alist)
form wrld state-vars))))
(defun bind-macro-args (args form wrld state-vars)
(declare (xargs :guard (and (macro-args-structurep args)
(true-listp form)
(plist-worldp wrld)
(weak-state-vars-p state-vars))
:verify-guards nil))
(cond ((and (consp args)
(eq (car args) '&whole))
(bind-macro-args1 (cddr args) (cdr form)
(list (cons (cadr args) form))
form wrld state-vars))
(t (bind-macro-args1 args (cdr form) nil form wrld state-vars))))
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