(module defstruct-unit mzscheme
  (require (lib "struct.ss") (lib "unit.ss"))
  (provide (all-defined))
  
  (define-syntax defstructs/sig/unit
    (syntax-rules (define-struct/properties)
      [(_ signame unitname (imps ...)
          def
          (define-struct/properties nm1 (flds1 ...) props #f)
          (define-struct/properties (nm par) (flds ...) () #f) ...)
       (begin
         (define-signature signame
           ((struct nm1 (flds1 ...))
            (struct nm (flds ...)) ...))
         (define-unit unitname           
           (import imps ...)
           (export signame)
           def
           (define-struct/properties nm1 (flds1 ...) props #f)
           (define-struct (nm par) (flds ...) #f) ...))]))
  
  )