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-rw-r--r--stdlib/source/lux/concurrency/space.lux44
1 files changed, 25 insertions, 19 deletions
diff --git a/stdlib/source/lux/concurrency/space.lux b/stdlib/source/lux/concurrency/space.lux
index 7092e2395..8fe9fa583 100644
--- a/stdlib/source/lux/concurrency/space.lux
+++ b/stdlib/source/lux/concurrency/space.lux
@@ -7,7 +7,7 @@
["T" task]
["A" actor #+ actor:])
(data [product]
- (coll [list "L/" Functor<List>]))
+ (coll [list "L/" Functor<List> Fold<List>]))
[io #- run]
[macro #+ with-gensyms]
(macro [code]
@@ -18,7 +18,7 @@
(with-expansions
[<Event> [e (A;Actor Top) (Space e)]
- <Action> (as-is (-> <Event> (A;Actor s) (T;Task Unit)))]
+ <Action> (as-is (-> <Event> (A;Actor s) (T;Task Bool)))]
(type: #export (Space e)
(A;Actor (List (Ex [s] [(A;Actor s) <Action>]))))
@@ -56,13 +56,21 @@
(def: #export (emit event space sender)
(All [e s] (-> e (Space e) (A;Actor s) (T;Task Unit)))
(send-space (function [subscriptions _]
- (exec (monad;map T;Monad<Task>
- (function [[receiver action]]
- (if (is (:! [] receiver) (:! [] sender))
- (T;return [])
- (action [event sender space] receiver)))
- subscriptions)
- (T;return subscriptions)))
+ (exec (do T;Monad<Task>
+ [verdicts (monad;map @
+ (function [(^@ sub [receiver action])]
+ (if (is (:! [] receiver) (:! [] sender))
+ (T;return [true sub])
+ (do @
+ [sent? (action [event sender space] receiver)]
+ (wrap [sent? sub]))))
+ subscriptions)]
+ (T;return (L/fold (function [[sent? sub] survivors]
+ (if sent?
+ (#;Cons sub survivors)
+ survivors))
+ (list)
+ verdicts)))))
space))
(def: #export space
@@ -136,15 +144,13 @@
(~ (csw;annotations annotations))
(All [(~@ (L/map code;local-symbol t-vars))]
(;;Action (~ eventT) (~ stateT)))
- (monad;do T;Monad<Task>
- [(~ g!_) (T;from-promise
- (_future
- (A;send (function [(~ g!state) (~ g!receiverL)]
- (: (T;Task (~ stateT))
- (do T;Monad<Task>
- []
- (~ body))))
- (~ g!receiverL))))]
- ((~' wrap) []))
+ (T;from-promise
+ (_future
+ (A;send (function [(~ g!state) (~ g!receiverL)]
+ (: (T;Task (~ stateT))
+ (monad;do T;Monad<Task>
+ []
+ (~ body))))
+ (~ g!receiverL))))
))))
)))