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Instruction

Instruction-kind

Get the kind (tag) of a instruction structure.

Signature
(instruction-kind x) → kind
Arguments: x — Guard (instructionp x).

Definitions and Theorems

Function: instruction-kind$inline

(defun instruction-kind$inline (x)
  (declare (xargs :guard (instructionp x)))
  (let ((__function__ 'instruction-kind))
    (declare (ignorable __function__))
    (mbe :logic (cond ((or (atom x) (eq (car x) :unary))
                       :unary)
                      ((eq (car x) :binary) :binary)
                      ((eq (car x) :ternary) :ternary)
                      ((eq (car x) :equal) :equal)
                      ((eq (car x) :assert) :assert)
                      ((eq (car x) :commit) :commit)
                      ((eq (car x) :hash) :hash)
                      ((eq (car x) :cast) :cast)
                      (t :call))
         :exec (car x))))

Theorem: instruction-kind-possibilities

(defthm instruction-kind-possibilities
  (or (equal (instruction-kind x) :unary)
      (equal (instruction-kind x) :binary)
      (equal (instruction-kind x) :ternary)
      (equal (instruction-kind x) :equal)
      (equal (instruction-kind x) :assert)
      (equal (instruction-kind x) :commit)
      (equal (instruction-kind x) :hash)
      (equal (instruction-kind x) :cast)
      (equal (instruction-kind x) :call))
  :rule-classes
  ((:forward-chaining :trigger-terms ((instruction-kind x)))))