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Syntax-abstraction

Abs-function-parameters

Abstract a function-parameters to a list of function parameters.

Signature
(abs-function-parameters tree) → fpars
Arguments: tree — Guard (abnf::treep tree).
Returns: fpars — Type (funparam-list-resultp fpars).

Definitions and Theorems

Function: abs-function-parameters

(defun abs-function-parameters (tree)
  (declare (xargs :guard (abnf::treep tree)))
  (let ((__function__ 'abs-function-parameters))
    (declare (ignorable __function__))
    (b* (((okf (abnf::tree-list-tuple3 sub))
          (abnf::check-tree-nonleaf-3 tree "function-parameters"))
         ((okf tree)
          (abnf::check-tree-list-1 sub.1st))
         ((okf fpar)
          (abs-function-parameter tree))
         ((okf fpars)
          (abs-*-comma-function-parameter sub.2nd))
         ((okf tree)
          (abnf::check-tree-list-1 sub.3rd))
         ((okf &) (check-?-comma tree)))
      (cons fpar fpars))))

Theorem: funparam-list-resultp-of-abs-function-parameters

(defthm funparam-list-resultp-of-abs-function-parameters
  (b* ((fpars (abs-function-parameters tree)))
    (funparam-list-resultp fpars))
  :rule-classes :rewrite)

Theorem: abs-function-parameters-of-tree-fix-tree

(defthm abs-function-parameters-of-tree-fix-tree
  (equal (abs-function-parameters (abnf::tree-fix tree))
         (abs-function-parameters tree)))

Theorem: abs-function-parameters-tree-equiv-congruence-on-tree

(defthm abs-function-parameters-tree-equiv-congruence-on-tree
  (implies (abnf::tree-equiv tree tree-equiv)
           (equal (abs-function-parameters tree)
                  (abs-function-parameters tree-equiv)))
  :rule-classes :congruence)