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(define-module (language python persist)
#:export ())
(define-method (pcopyable (<p> o)) #t)
(define-method (deep_pcopyable (<p> o)) #t)
(define-method (pcopy (<p> o))
(list #:obj
(aif it (get o '__copy__)
(it)
(copy o))))
(define-method (deep-pcopy (<p> o) p?)
(aif it (and p? (get o '__deepcopy__))
(list #:obj (it))
(list #:reduce
(make (class-of o))
(reduce o))))
(define-method (reduce o) '())
(define-method (reduce (<p> o))
(cons*
(cons
(lambda (o args)
(let ((h (make-hash-table)))
(slot-set! o 'h h)
(for-each
(lambda (x) (hash-set! h (car x) (cdr x))))))
(list
(hash-fold
(lambda (k v s) (cons (cons k v) s))
'()
(slot-ref o 'h))))
(next-method)))
(define-method (reduce (<pf> o))
(cons*
(cons
(lambda (o n args)
(slot-set! o 'size n)
(slot-set! o 'n n)
(let ((h
(fold
(lambda (k v s) (vhash-assoc k v s))
vlist-null
args)))
(slot-set! o 'h h)))
(list (slot-ref o 'n) (vhash->assoc (slot-ref o 'h))))
(next-method)))
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