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• Error-checking

Ensure-term-logic-mode

Cause an error if a term calls any program-mode function.

Signature

(ensure-term-logic-mode term description 
                        error-erp error-val ctx state) 
 
  → 
(mv erp val state)

Arguments

term — Term to check.
    Guard (pseudo-termp term).

description — Guard (msgp description).

error-erp — Flag to return in case of error.

error-val — Value to return in case of error.

ctx — Context for errors.

Returns

erp — Type (implies erp (equal erp error-erp)).

val — Type (and (implies erp (equal val error-val)) (implies (and (not erp) error-erp) (not val))) .

Definitions and Theorems

Function: ensure-term-logic-mode

(defun ensure-term-logic-mode (term description
                                    error-erp error-val ctx state)
 (declare (xargs :stobjs (state)))
 (declare (xargs :guard (and (pseudo-termp term)
                             (msgp description))))
 (b*
  (((unless (logic-fnsp term (w state)))
    (er-soft+
     ctx error-erp error-val
     "~@0 must call only logic-mode functions, ~
     but it calls the program-mode ~@1."
     description
     (let ((fns (all-program-ffn-symbs term nil (w state))))
       (if (= (len fns) 1)
           (msg "function ~x0" (car fns))
         (msg "functions ~&0" fns))))))
  (value nil)))

Theorem: return-type-of-ensure-term-logic-mode.erp

(defthm return-type-of-ensure-term-logic-mode.erp
  (b* (((mv ?erp ?val ?state)
        (ensure-term-logic-mode term description
                                error-erp error-val ctx state)))
    (implies erp (equal erp error-erp)))
  :rule-classes :rewrite)

Theorem: return-type-of-ensure-term-logic-mode.val

(defthm return-type-of-ensure-term-logic-mode.val
  (b* (((mv ?erp ?val ?state)
        (ensure-term-logic-mode term description
                                error-erp error-val ctx state)))
    (and (implies erp (equal val error-val))
         (implies (and (not erp) error-erp)
                  (not val))))
  :rule-classes :rewrite)

Subtopics

Ensure-term-logic-mode$

Calls ensure-term-logic-mode with ctx and state as the last two arguments.