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• Vl-match-latch-main

Vl-match-latchbody-form2

Match if (test) lhs = [#delay] rhs.

Signature

(vl-match-latchbody-form2 x) → (mv test lhs rhs delay)

Arguments

x — Guard (vl-stmt-p x).

Returns

test — Type (equal (vl-expr-p test) (if test t nil)), given the guard.

lhs — Type (and (equal (vl-expr-p lhs) (if test t nil)) (iff lhs test)), given the guard.

rhs — Type (and (equal (vl-expr-p rhs) (if test t nil)) (iff rhs test)), given the guard.

delay — maybe natp.

Definitions and Theorems

Function: vl-match-latchbody-form2

(defun vl-match-latchbody-form2 (x)
 (declare (xargs :guard (vl-stmt-p x)))
 (let ((__function__ 'vl-match-latchbody-form2))
   (declare (ignorable __function__))
   (b*
    (((unless (vl-ifstmt-p x))
      (mv nil nil nil nil))
     ((vl-ifstmt x) x)
     ((unless (and (vl-nullstmt-p x.falsebranch)
                   (vl-assignstmt-p x.truebranch)))
      (mv nil nil nil nil))
     ((vl-assignstmt ass) x.truebranch)
     ((unless (or (eq ass.type :vl-blocking)
                  (eq ass.type :vl-nonblocking)))
      (mv nil nil nil nil))
     ((unless
           (or (not ass.ctrl)
               (and (mbe :logic (vl-delaycontrol-p ass.ctrl)
                         :exec (eq (tag ass.ctrl) :vl-delaycontrol))
                    (vl-simpledelaycontrol-p ass.ctrl))))
      (mv nil nil nil nil))
     (ticks (and ass.ctrl
                 (vl-simpledelaycontrol->ticks ass.ctrl))))
    (mv x.condition
        ass.lvalue ass.expr ticks))))

Theorem: return-type-of-vl-match-latchbody-form2.test

(defthm return-type-of-vl-match-latchbody-form2.test
  (implies (and (force (vl-stmt-p x)))
           (b* (((mv ?test ?lhs ?rhs ?delay)
                 (vl-match-latchbody-form2 x)))
             (equal (vl-expr-p test)
                    (if test t nil))))
  :rule-classes :rewrite)

Theorem: return-type-of-vl-match-latchbody-form2.lhs

(defthm return-type-of-vl-match-latchbody-form2.lhs
  (implies (and (force (vl-stmt-p x)))
           (b* (((mv ?test ?lhs ?rhs ?delay)
                 (vl-match-latchbody-form2 x)))
             (and (equal (vl-expr-p lhs) (if test t nil))
                  (iff lhs test))))
  :rule-classes :rewrite)

Theorem: return-type-of-vl-match-latchbody-form2.rhs

(defthm return-type-of-vl-match-latchbody-form2.rhs
  (implies (and (force (vl-stmt-p x)))
           (b* (((mv ?test ?lhs ?rhs ?delay)
                 (vl-match-latchbody-form2 x)))
             (and (equal (vl-expr-p rhs) (if test t nil))
                  (iff rhs test))))
  :rule-classes :rewrite)

Theorem: maybe-natp-of-vl-match-latchbody-form2.ticks

(defthm maybe-natp-of-vl-match-latchbody-form2.ticks
  (maybe-natp (mv-nth 3 (vl-match-latchbody-form2 x)))
  :rule-classes :type-prescription)