X-Git-Url: https://jxself.org/git/?p=8sync.git;a=blobdiff_plain;f=8sync%2Factors.scm;h=fdeccf39090d6cddb9cdbd273f3db2a616c00d5b;hp=1b120ba77916e1e3f9bd08029cfa4398218a5e66;hb=cef6072905deb71f3f2277dda21a78595d295901;hpb=d23b593a5810b38d2517a44c09d49b2835c59e16 diff --git a/8sync/actors.scm b/8sync/actors.scm index 1b120ba..fdeccf3 100644 --- a/8sync/actors.scm +++ b/8sync/actors.scm @@ -25,6 +25,7 @@ #:use-module (ice-9 match) #:use-module (ice-9 pretty-print) #:use-module (8sync agenda) + #:use-module (8sync rmeta-slot) #:export (;; utilities... ought to go in their own module big-random-number big-random-number-string @@ -294,34 +295,25 @@ raise an exception if an error." (define (actor-inheritable-message-handler actor message) (define action (message-action message)) - (define (find-message-handler return) - (for-each (lambda (this-class) - (define actions - (or (and (class-slot-definition this-class 'actions) - (class-slot-ref this-class 'actions)) - '())) - (for-each (match-lambda - ((action-name . method) - (when (eq? action-name action) - (return method)))) - actions)) - (class-precedence-list (class-of actor))) + (define method + (class-rmeta-ref (class-of actor) 'actions action + #:equals? eq? #:cache-set! hashq-set! + #:cache-ref hashq-ref)) + (unless method (throw 'action-not-found "No appropriate action handler found for actor" #:action action #:actor actor #:message message)) - (define method - (call/ec find-message-handler)) (apply method actor message (message-body message))) (define-syntax-rule (build-actions (symbol method) ...) "Construct an alist of (symbol . method), where the method is wrapped with wrap-apply to facilitate live hacking and allow the method definition to come after class definition." - (list - (cons (quote symbol) - (wrap-apply method)) ...)) + (build-rmeta-slot + (list (cons (quote symbol) + (wrap-apply method)) ...))) (define-class () ;; An address object @@ -347,7 +339,7 @@ to come after class definition." #:allocation #:each-subclass) ;; This is the default, "simple" way to inherit and process messages. - (actions #:init-value (build-actions + (actions #:init-thunk (build-actions ;; Default init method is to do nothing. (*init* (const #f)) ;; Default cleanup method is to do nothing. @@ -398,7 +390,7 @@ to come after class definition." (action ...) slots ...) (define-class class inherits - (actions #:init-value (build-actions action ...) + (actions #:init-thunk (build-actions action ...) #:allocation #:each-subclass) slots ...)) @@ -432,7 +424,7 @@ to come after class definition." (prompt #:init-thunk make-prompt-tag #:getter hive-prompt) (actions #:allocation #:each-subclass - #:init-value + #:init-thunk (build-actions ;; This is in the case of an ambassador failing to forward a ;; message... it reports it back to the hive