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• Atc-variable-tables

Atc-get-var-check-innermost

Obtain the information for a variable from the symbol table, and indicate whether the variable is in the innermost scope.

Signature

(atc-get-var-check-innermost var inscope) 
  → 
(mv info? innermostp)

Arguments

var — Guard (symbolp var).

inscope — Guard (atc-symbol-varinfo-alist-listp inscope).

Returns

info? — Type (atc-var-info-optionp info?).

innermostp — Type (booleanp innermostp).

This is used to define atc-get-vars-check-innermost. See that function's documentation for motivation.

Definitions and Theorems

Function: atc-get-var-check-innermost-aux

(defun atc-get-var-check-innermost-aux (var inscope innermostp)
  (declare
       (xargs :guard (and (symbolp var)
                          (atc-symbol-varinfo-alist-listp inscope)
                          (booleanp innermostp))))
  (let ((__function__ 'atc-get-var-check-innermost-aux))
    (declare (ignorable __function__))
    (b* (((when (endp inscope)) (mv nil nil))
         (scope (atc-symbol-varinfo-alist-fix (car inscope)))
         (type? (cdr (assoc-eq var scope)))
         ((when type?) (mv type? innermostp)))
      (atc-get-var-check-innermost-aux var (cdr inscope)
                                       nil))))

Theorem: atc-var-info-optionp-of-atc-get-var-check-innermost-aux.info?

(defthm
      atc-var-info-optionp-of-atc-get-var-check-innermost-aux.info?
  (b* (((mv ?info? ?innermostp)
        (atc-get-var-check-innermost-aux var inscope innermostp)))
    (atc-var-info-optionp info?))
  :rule-classes :rewrite)

Theorem: booleanp-of-atc-get-var-check-innermost-aux.innermostp

(defthm booleanp-of-atc-get-var-check-innermost-aux.innermostp
 (implies
    (booleanp innermostp)
    (b* (((mv ?info? ?innermostp)
          (atc-get-var-check-innermost-aux var inscope innermostp)))
      (booleanp innermostp)))
 :rule-classes :rewrite)

Function: atc-get-var-check-innermost

(defun atc-get-var-check-innermost (var inscope)
 (declare
      (xargs :guard (and (symbolp var)
                         (atc-symbol-varinfo-alist-listp inscope))))
 (let ((__function__ 'atc-get-var-check-innermost))
   (declare (ignorable __function__))
   (atc-get-var-check-innermost-aux var inscope t)))

Theorem: atc-var-info-optionp-of-atc-get-var-check-innermost.info?

(defthm atc-var-info-optionp-of-atc-get-var-check-innermost.info?
  (b* (((mv ?info? ?innermostp)
        (atc-get-var-check-innermost var inscope)))
    (atc-var-info-optionp info?))
  :rule-classes :rewrite)

Theorem: booleanp-of-atc-get-var-check-innermost.innermostp

(defthm booleanp-of-atc-get-var-check-innermost.innermostp
  (b* (((mv ?info? ?innermostp)
        (atc-get-var-check-innermost var inscope)))
    (booleanp innermostp))
  :rule-classes :rewrite)