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Syntax-abstraction

Abs-function-declaration

Abstract a function-declaration to a function declaration.

Signature
(abs-function-declaration tree) → fundef
Arguments: tree — Guard (abnf::treep tree).
Returns: fundef — Type (fundecl-resultp fundef).

Definitions and Theorems

Function: abs-function-declaration

(defun abs-function-declaration (tree)
  (declare (xargs :guard (abnf::treep tree)))
  (let ((__function__ 'abs-function-declaration))
    (declare (ignorable __function__))
    (b* (((okf (abnf::tree-list-tuple9 sub))
          (abnf::check-tree-nonleaf-9 tree "function-declaration"))
         ((okf anns) (abs-*-annotation sub.1st))
         ((okf tree)
          (abnf::check-tree-list-1 sub.2nd))
         ((okf &)
          (abnf::check-tree-schars tree "function"))
         ((okf tree)
          (abnf::check-tree-list-1 sub.3rd))
         ((okf name) (abs-identifier tree))
         ((okf tree)
          (abnf::check-tree-list-1 sub.4th))
         ((okf &)
          (abnf::check-tree-schars tree "("))
         ((okf tree)
          (abnf::check-tree-list-1 sub.5th))
         ((okf params)
          (abs-?-function-parameters tree))
         ((okf tree)
          (abnf::check-tree-list-1 sub.6th))
         ((okf &)
          (abnf::check-tree-schars tree ")"))
         ((okf tree)
          (abnf::check-tree-list-1 sub.7th))
         ((okf &)
          (abnf::check-tree-schars tree "->"))
         ((okf tree)
          (abnf::check-tree-list-1 sub.8th))
         ((okf type) (abs-type tree))
         ((okf tree)
          (abnf::check-tree-list-1 sub.9th))
         ((okf body) (abs-block tree)))
      (make-fundecl :annotations anns
                    :sort (fun-sort-standard)
                    :name name
                    :inputs params
                    :output type
                    :body body))))

Theorem: fundecl-resultp-of-abs-function-declaration

(defthm fundecl-resultp-of-abs-function-declaration
  (b* ((fundef (abs-function-declaration tree)))
    (fundecl-resultp fundef))
  :rule-classes :rewrite)

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

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

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

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