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• Event-macro-input-processors

Evmac-process-input-show-only

Process the :show-only input of an event macro.

Signature

(evmac-process-input-show-only show-only ctx state) 
  → 
(mv erp show-only$ state)

Returns

show-only$ — Type (booleanp show-only$).

This is for event macros that have a :show-only input to specify whether the event expansion should be submitted to ACL2 or just shown on the screen.

If the :show-only input, is valid, it is returned unchanged. This facilitates guard/type proofs involving this function, by obviating the need to enable this function in such proofs to establish that, if the :show-only input passes validation, then it satisfies booleanp.

Definitions and Theorems

Function: evmac-process-input-show-only

(defun evmac-process-input-show-only (show-only ctx state)
 (declare (xargs :stobjs (state)))
 (declare (xargs :guard t))
 (let ((__function__ 'evmac-process-input-show-only))
  (declare (ignorable __function__))
  (if (booleanp show-only)
      (value show-only)
   (er-soft+
    ctx t nil
    "The :SHOW-ONLY input must be T or NIL; ~
               but it is ~x0 instead."
    show-only))))

Theorem: booleanp-of-evmac-process-input-show-only.show-only$

(defthm booleanp-of-evmac-process-input-show-only.show-only$
  (b* (((mv ?erp ?show-only$ ?state)
        (evmac-process-input-show-only show-only ctx state)))
    (booleanp show-only$))
  :rule-classes :rewrite)