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Char-array

Char-array->components

Get the components field from a char-array.

Signature
(char-array->components x) → components
Arguments: x — Guard (char-arrayp x).
Returns: components — Type (char-value-listp components).

This is an ordinary field accessor created by fty::defprod.

Definitions and Theorems

Function: char-array->components$inline

(defun char-array->components$inline (x)
 (declare (xargs :guard (char-arrayp x)))
 (declare (xargs :guard t))
 (let ((__function__ 'char-array->components))
  (declare (ignorable __function__))
  (mbe
    :logic
    (b* ((x (and t x))
         (components (char-value-list-fix (std::da-nth 0 (cdr x)))))
      (if (< (len components) (expt 2 31))
          components
        nil))
    :exec (std::da-nth 0 (cdr x)))))

Theorem: char-value-listp-of-char-array->components

(defthm char-value-listp-of-char-array->components
  (b* ((components (char-array->components$inline x)))
    (char-value-listp components))
  :rule-classes :rewrite)

Theorem: char-array->components$inline-of-char-array-fix-x

(defthm char-array->components$inline-of-char-array-fix-x
  (equal (char-array->components$inline (char-array-fix x))
         (char-array->components$inline x)))

Theorem: char-array->components$inline-char-array-equiv-congruence-on-x

(defthm
     char-array->components$inline-char-array-equiv-congruence-on-x
  (implies (char-array-equiv x x-equiv)
           (equal (char-array->components$inline x)
                  (char-array->components$inline x-equiv)))
  :rule-classes :congruence)