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    • Basicsanity

    Vl-interface-check-modinst-is-subinterface

    Signature
    (vl-interface-check-modinst-is-subinterface x ss warnings) 
      → 
    new-warnings
    Arguments
    x — Modinst to check, occurs within an interface.
        Guard (vl-modinst-p x).
    ss — Guard (vl-scopestack-p ss).
    warnings — Guard (vl-warninglist-p warnings).
    Returns
    new-warnings — Type (vl-warninglist-p new-warnings).

    Definitions and Theorems

    Function: vl-interface-check-modinst-is-subinterface

    (defun vl-interface-check-modinst-is-subinterface (x ss warnings)
     (declare (xargs :guard (and (vl-modinst-p x)
                                 (vl-scopestack-p ss)
                                 (vl-warninglist-p warnings))))
     (let ((__function__ 'vl-interface-check-modinst-is-subinterface))
      (declare (ignorable __function__))
      (b*
       (((vl-modinst x) (vl-modinst-fix x))
        (def (vl-scopestack-find-definition x.modname ss))
        ((unless def)
         (fatal :type :vl-interface-instance-undefined
                :msg "~a0 refers to undefined interface ~m1."
                :args (list x x.modname)))
        ((unless (mbe :logic (vl-interface-p def)
                      :exec (eq (tag def) :vl-interface)))
         (fatal
          :type :vl-interface-instantiates-noninterface
          :msg
          "~a0: can't instantiate ~s1 within an interface ~
                         (interfaces can instantiate other interfaces, but can't ~
                         have ~s2 instances.)"
          :args (list x x.modname
                      (case (tag def)
                            (:vl-module "submodule")
                            (:vl-udp "primitive")
                            (:vl-program "program")
                            (:vl-class "class")
                            (otherwise (impossible)))))))
       (ok))))

    Theorem: vl-warninglist-p-of-vl-interface-check-modinst-is-subinterface

    (defthm
         vl-warninglist-p-of-vl-interface-check-modinst-is-subinterface
     (b*
      ((new-warnings
            (vl-interface-check-modinst-is-subinterface x ss warnings)))
      (vl-warninglist-p new-warnings))
     :rule-classes :rewrite)

    Theorem: vl-interface-check-modinst-is-subinterface-of-vl-modinst-fix-x

    (defthm
         vl-interface-check-modinst-is-subinterface-of-vl-modinst-fix-x
     (equal
          (vl-interface-check-modinst-is-subinterface (vl-modinst-fix x)
                                                      ss warnings)
          (vl-interface-check-modinst-is-subinterface x ss warnings)))

    Theorem: vl-interface-check-modinst-is-subinterface-vl-modinst-equiv-congruence-on-x

    (defthm
     vl-interface-check-modinst-is-subinterface-vl-modinst-equiv-congruence-on-x
     (implies
       (vl-modinst-equiv x x-equiv)
       (equal (vl-interface-check-modinst-is-subinterface x ss warnings)
              (vl-interface-check-modinst-is-subinterface
                   x-equiv ss warnings)))
     :rule-classes :congruence)

    Theorem: vl-interface-check-modinst-is-subinterface-of-vl-scopestack-fix-ss

    (defthm
     vl-interface-check-modinst-is-subinterface-of-vl-scopestack-fix-ss
     (equal (vl-interface-check-modinst-is-subinterface
                 x (vl-scopestack-fix ss)
                 warnings)
            (vl-interface-check-modinst-is-subinterface x ss warnings)))

    Theorem: vl-interface-check-modinst-is-subinterface-vl-scopestack-equiv-congruence-on-ss

    (defthm
     vl-interface-check-modinst-is-subinterface-vl-scopestack-equiv-congruence-on-ss
     (implies
       (vl-scopestack-equiv ss ss-equiv)
       (equal (vl-interface-check-modinst-is-subinterface x ss warnings)
              (vl-interface-check-modinst-is-subinterface
                   x ss-equiv warnings)))
     :rule-classes :congruence)

    Theorem: vl-interface-check-modinst-is-subinterface-of-vl-warninglist-fix-warnings

    (defthm
     vl-interface-check-modinst-is-subinterface-of-vl-warninglist-fix-warnings
     (equal (vl-interface-check-modinst-is-subinterface
                 x ss (vl-warninglist-fix warnings))
            (vl-interface-check-modinst-is-subinterface x ss warnings)))

    Theorem: vl-interface-check-modinst-is-subinterface-vl-warninglist-equiv-congruence-on-warnings

    (defthm
     vl-interface-check-modinst-is-subinterface-vl-warninglist-equiv-congruence-on-warnings
     (implies
       (vl-warninglist-equiv warnings warnings-equiv)
       (equal (vl-interface-check-modinst-is-subinterface x ss warnings)
              (vl-interface-check-modinst-is-subinterface
                   x ss warnings-equiv)))
     :rule-classes :congruence)