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(.module:
  [lux #*
   [abstract
    ["." equivalence (#+ Equivalence)]]
   [data
    [format
     [".F" binary (#+ Format)]]]]
  ["." // #_
   ["#." label (#+ Label)]
   ["//#" /// #_
    [constant (#+ Class)]
    ["#." index (#+ Index)]
    [encoding
     ["#." unsigned (#+ U2)]]]])

(type: #export Exception
  {#start-pc Label
   #end-pc Label
   #handler-pc Label
   #catch-type (Index Class)})

(def: #export equivalence
  (Equivalence Exception)
  ($_ equivalence.product
      //label.equivalence
      //label.equivalence
      //label.equivalence
      ////index.equivalence
      ))

## https://docs.oracle.com/javase/specs/jvms/se8/html/jvms-4.html#jvms-4.7.3
(def: #export length
  Nat
  ($_ n/+
      ## u2 start_pc;
      ////unsigned.u2-bytes
      ## u2 end_pc;
      ////unsigned.u2-bytes
      ## u2 handler_pc;
      ////unsigned.u2-bytes
      ## u2 catch_type;
      ////unsigned.u2-bytes
      ))

(def: #export format
  (Format Exception)
  ($_ binaryF.and
      //label.format
      //label.format
      //label.format
      ////index.format
      ))