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Escape-sequence-octal

Escape-sequence-octal->value

Get the value field from a escape-sequence-octal.

Signature
(escape-sequence-octal->value x) → value
Arguments: x — Guard (escape-sequence-p x).
Returns: value — Type (acl2::ubyte8p value).

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

Definitions and Theorems

Function: escape-sequence-octal->value$inline

(defun escape-sequence-octal->value$inline (x)
  (declare (xargs :guard (escape-sequence-p x)))
  (declare (xargs :guard (equal (escape-sequence-kind x)
                                :octal)))
  (let ((__function__ 'escape-sequence-octal->value))
    (declare (ignorable __function__))
    (mbe :logic
         (b* ((x (and (equal (escape-sequence-kind x) :octal)
                      x)))
           (acl2::ubyte8-fix (std::da-nth 0 (cdr x))))
         :exec (std::da-nth 0 (cdr x)))))

Theorem: ubyte8p-of-escape-sequence-octal->value

(defthm ubyte8p-of-escape-sequence-octal->value
  (b* ((value (escape-sequence-octal->value$inline x)))
    (acl2::ubyte8p value))
  :rule-classes :rewrite)

Theorem: escape-sequence-octal->value$inline-of-escape-sequence-fix-x

(defthm escape-sequence-octal->value$inline-of-escape-sequence-fix-x
  (equal
       (escape-sequence-octal->value$inline (escape-sequence-fix x))
       (escape-sequence-octal->value$inline x)))

Theorem: escape-sequence-octal->value$inline-escape-sequence-equiv-congruence-on-x

(defthm
 escape-sequence-octal->value$inline-escape-sequence-equiv-congruence-on-x
 (implies (escape-sequence-equiv x x-equiv)
          (equal (escape-sequence-octal->value$inline x)
                 (escape-sequence-octal->value$inline x-equiv)))
 :rule-classes :congruence)

Theorem: escape-sequence-octal->value-when-wrong-kind

(defthm escape-sequence-octal->value-when-wrong-kind
  (implies (not (equal (escape-sequence-kind x) :octal))
           (equal (escape-sequence-octal->value x)
                  (acl2::ubyte8-fix nil))))