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Function-specification

Function-specificationp

Recognizer for function-specification structures.

Signature
(function-specificationp x) → *

Definitions and Theorems

Function: function-specificationp

(defun function-specificationp (x)
 (declare (xargs :guard t))
 (let ((__function__ 'function-specificationp))
  (declare (ignorable __function__))
  (and
   (mbe :logic (and (alistp x)
                    (equal (strip-cars x)
                           '(name functions specifier)))
        :exec (fty::alist-with-carsp x '(name functions specifier)))
   (b* ((name (cdr (std::da-nth 0 x)))
        (functions (cdr (std::da-nth 1 x)))
        (specifier (cdr (std::da-nth 2 x))))
     (and (identifierp name)
          (function-header-listp functions)
          (function-specifierp specifier))))))

Theorem: consp-when-function-specificationp

(defthm consp-when-function-specificationp
  (implies (function-specificationp x)
           (consp x))
  :rule-classes :compound-recognizer)