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Atj-java-primitive-array-model

Char-array-read

Read a component from a Java char array.

Signature
(char-array-read array index) → component
Arguments: array — Guard (char-arrayp array).; index — Guard (int-valuep index).
Returns: component — Type (char-valuep component).

Definitions and Theorems

Function: char-array-read

(defun char-array-read (array index)
  (declare (xargs :guard (and (char-arrayp array)
                              (int-valuep index))))
  (declare (xargs :guard (char-array-index-in-range-p array index)))
  (let ((__function__ 'char-array-read))
    (declare (ignorable __function__))
    (char-value-fix (nth (int-value->int index)
                         (char-array->components array)))))

Theorem: char-valuep-of-char-array-read

(defthm char-valuep-of-char-array-read
  (b* ((component (char-array-read array index)))
    (char-valuep component))
  :rule-classes :rewrite)