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Syntax-abstraction

Abs-annotation

Abstract an annotation to an annotation.

Signature
(abs-annotation tree) → ann
Arguments: tree — Guard (abnf::treep tree).
Returns: ann — Type (annotation-resultp ann).

Definitions and Theorems

Function: abs-annotation

(defun abs-annotation (tree)
  (declare (xargs :guard (abnf::treep tree)))
  (let ((__function__ 'abs-annotation))
    (declare (ignorable __function__))
    (b* (((okf (abnf::tree-list-tuple2 sub))
          (abnf::check-tree-nonleaf-2 tree "annotation"))
         ((okf tree)
          (abnf::check-tree-list-1 sub.1st))
         ((okf &)
          (abnf::check-tree-ichars tree "@"))
         ((okf tree)
          (abnf::check-tree-list-1 sub.2nd))
         ((okf id) (abs-identifier tree)))
      (make-annotation :name id))))

Theorem: annotation-resultp-of-abs-annotation

(defthm annotation-resultp-of-abs-annotation
  (b* ((ann (abs-annotation tree)))
    (annotation-resultp ann))
  :rule-classes :rewrite)

Theorem: abs-annotation-of-tree-fix-tree

(defthm abs-annotation-of-tree-fix-tree
  (equal (abs-annotation (abnf::tree-fix tree))
         (abs-annotation tree)))

Theorem: abs-annotation-tree-equiv-congruence-on-tree

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