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Input-syntax-abstraction

Abs-input-item

Abstract an input-item to an input item.

Signature
(abs-input-item tree) → initem
Arguments: tree — Guard (abnf::treep tree).
Returns: initem — Type (input-item-resultp initem).

Definitions and Theorems

Function: abs-input-item

(defun abs-input-item (tree)
  (declare (xargs :guard (abnf::treep tree)))
  (let ((__function__ 'abs-input-item))
    (declare (ignorable __function__))
    (b* (((okf (abnf::tree-list-tuple6 sub))
          (abnf::check-tree-nonleaf-6 tree "input-item"))
         ((okf tree)
          (abnf::check-tree-list-1 sub.1st))
         ((okf ident) (abs-identifier tree))
         ((okf tree)
          (abnf::check-tree-list-1 sub.2nd))
         ((okf &)
          (abnf::check-tree-ichars tree ":"))
         ((okf tree)
          (abnf::check-tree-list-1 sub.3rd))
         ((okf intype) (abs-input-type tree))
         ((okf tree)
          (abnf::check-tree-list-1 sub.4th))
         ((okf &)
          (abnf::check-tree-ichars tree "="))
         ((okf tree)
          (abnf::check-tree-list-1 sub.5th))
         ((okf inexpr)
          (abs-input-expression tree))
         ((okf tree)
          (abnf::check-tree-list-1 sub.6th))
         ((okf &)
          (abnf::check-tree-ichars tree ";")))
      (make-input-item :name ident
                       :type intype
                       :value inexpr))))

Theorem: input-item-resultp-of-abs-input-item

(defthm input-item-resultp-of-abs-input-item
  (b* ((initem (abs-input-item tree)))
    (input-item-resultp initem))
  :rule-classes :rewrite)

Theorem: abs-input-item-of-tree-fix-tree

(defthm abs-input-item-of-tree-fix-tree
  (equal (abs-input-item (abnf::tree-fix tree))
         (abs-input-item tree)))

Theorem: abs-input-item-tree-equiv-congruence-on-tree

(defthm abs-input-item-tree-equiv-congruence-on-tree
  (implies (abnf::tree-equiv tree tree-equiv)
           (equal (abs-input-item tree)
                  (abs-input-item tree-equiv)))
  :rule-classes :congruence)