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Re: Reinitialization: check-initargs
I just got another idea, which is to pass in a list of generic
functions and arguments to which to apply them.
This can be made to work.
But that doesn't work because we have forgotten that we are doing
check-initargs, not check-keyword-arguments, and it has to worry
about slot-filling initargs too.
One doesn't have to worry about the slot-filling initargs since those can be
passed in as extra-allowed-keywords.
keyword-arguments is a p-list of keyword arguments to be passed to the
generic-functions in generic-functions-and-arguments.
generic-functions-and-arguments is a list of lists, each containing a generic
function followed by a list of the required arguments that can select
extra-allowed-keywords is a list of additional allowed keywords.
make instance would call check-keyword-arguments this way
(defmethod make-instance ((class standard-class) &rest initargs)
(setq initargs (default-initargs class initargs))
(let((proto (class-prototype class)))
(list (list #'allocate-instance class)
(list #'initialize-instance proto nil)
(list #'initialize-new-instance proto))
(error "illegal initarg")))
As for the check-keyword-arguments on page 60 of Chapter 3, it is the one that
is misnamed. It should be called something more like