First attempt at novy syntax
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syndicate/go.rkt
116
syndicate/go.rkt
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@ -3,69 +3,67 @@
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(require racket/match)
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(require preserves)
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(require "main.rkt")
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(require (except-in "main.rkt" actor-system))
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(require "bag.rkt")
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(require "schemas/gen/box-protocol.rkt")
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(require "schemas/gen/dataspace.rkt")
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(define ((box ds LIMIT REPORT_EVERY) turn)
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(define value (turn-field! turn 'box-value 0))
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(turn-assert/dataflow! turn ds (lambda (turn) (BoxState->preserves (BoxState (value)))))
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(define start-time (current-inexact-milliseconds))
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(define prev-value 0)
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(turn-assert! turn ds
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(Observe->preserves
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(Observe 'SetBox
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(turn-ref turn
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(entity #:message
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(lambda (turn new-value-rec)
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(define new-value (SetBox-value new-value-rec))
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(when (zero? (remainder new-value REPORT_EVERY))
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(define end-time (current-inexact-milliseconds))
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(define delta (/ (- end-time start-time) 1000.0))
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(define count (- new-value prev-value))
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(set! prev-value new-value)
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(set! start-time end-time)
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(log-info "Box got ~a (~a Hz)"
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new-value
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(/ count delta)))
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(when (= new-value LIMIT)
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(turn-stop-actor! turn))
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(value new-value))))))))
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(require "syntax.rkt")
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(define ((client ds) turn)
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(turn-assert! turn ds
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(Observe->preserves
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(Observe 'BoxState
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(turn-ref turn
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(entity #:assert
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(lambda (turn current-value _handle)
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;; (log-info "Client got ~a" current-value)
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(turn-message! turn ds
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(SetBox->preserves
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(SetBox
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(+ (BoxState-value current-value)
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1))))))))))
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(let ((count 0))
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(turn-assert! turn ds
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(Observe->preserves
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(Observe 'BoxState
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(turn-ref turn
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(entity #:assert
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(lambda (turn current-value _handle)
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(define box
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(action (ds LIMIT REPORT_EVERY)
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(spawn (define root-facet this-facet)
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(define-field value 0)
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(define start-time (current-inexact-milliseconds))
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(define prev-value 0)
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(at ds
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(assert (BoxState->preserves (BoxState (value))))
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(when (message (SetBox new-value))
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(when (zero? (remainder new-value REPORT_EVERY))
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(define end-time (current-inexact-milliseconds))
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(define delta (/ (- end-time start-time) 1000.0))
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(define count (- new-value prev-value))
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(set! prev-value new-value)
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(set! start-time end-time)
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(log-info "Box got ~a (~a Hz)" new-value (/ count delta)))
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(when (= new-value LIMIT)
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(stop-facet root-facet))
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(value new-value))))))
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(define client
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(action (ds)
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(spawn (define root-facet this-facet)
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(define count 0)
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(at ds
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(when (asserted (BoxState value))
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(send! ds (SetBox->preserves (SetBox (+ value 1)))))
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;; (during (BoxState _)
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;; (on-start (set! count (+ count 1)))
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;; (on-stop (set! count (- count 1))
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;; (when (zero? count)
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;; (log-info "Client detected box termination")
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;; (stop-facet root-facet))))
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(assert (Observe->preserves
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(Observe 'BoxState
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(ref (entity #:assert
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(action (_v _h)
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(set! count (+ count 1)))
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#:retract
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(lambda (turn _handle)
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(action (_h)
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(set! count (- count 1))
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(when (zero? count)
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(log-info "Client detected box termination")
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(turn-stop-actor! turn))))))))))
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(stop-facet root-facet))))))))
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;; (during (BoxState _)
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;; (on-stop (log-info "Client detected box termination")
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;; (stop-facet root-facet)))
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))))
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(define (dataspace)
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(define handles (make-hash))
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(define assertions (make-bag))
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(define subscriptions (make-hash))
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(entity #:assert (lambda (turn rec handle)
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(entity #:assert (action (rec handle)
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(when (record? rec)
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(hash-set! handles handle rec)
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(when (eq? (bag-change! assertions rec +1) 'absent->present)
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@ -76,17 +74,17 @@
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(hash-set! (hash-ref! subscriptions label make-hasheq) observer seen)
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(for [(existing (in-bag assertions))]
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(when (preserve=? (record-label existing) label)
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(hash-set! seen existing (turn-assert! turn observer existing))))])
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(hash-set! seen existing (turn-assert! this-turn observer existing))))])
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(for [((observer seen) (in-hash (hash-ref subscriptions (record-label rec) '#hash())))]
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(unless (hash-has-key? seen rec)
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(hash-set! seen rec (turn-assert! turn observer rec)))))))
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#:retract (lambda (turn upstream-handle)
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(hash-set! seen rec (turn-assert! this-turn observer rec)))))))
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#:retract (action (upstream-handle)
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(define rec (hash-ref handles upstream-handle #f))
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(when rec
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(hash-remove! handles upstream-handle)
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(when (eq? (bag-change! assertions rec -1) 'present->absent)
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(for [(seen (in-hash-values (hash-ref subscriptions (record-label rec) '#hash())))]
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(turn-retract! turn (hash-ref seen rec))
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(turn-retract! this-turn (hash-ref seen rec))
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(hash-remove! seen rec))
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(match (parse-Observe rec)
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[(? eof-object?) (void)]
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@ -95,17 +93,15 @@
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(hash-remove! subscribers observer)
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(when (hash-empty? subscribers)
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(hash-remove! subscriptions label)))]))))
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#:message (lambda (turn message)
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#:message (action (message)
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(when (record? message)
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(for [(peer (in-hash-keys (hash-ref subscriptions (record-label message) '#hash())))]
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(turn-message! turn peer message))))))
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(turn-message! this-turn peer message))))))
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(module+ main
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(time
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(actor-system
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(lambda (turn)
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(actor-daemon! (facet-actor (turn-active-facet turn)) #t)
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(define disarm (facet-prevent-inert-check! (turn-active-facet turn)))
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(define ds (turn-ref turn (dataspace)))
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(turn-spawn! turn (box ds 500000 100000))
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(turn-spawn! turn (client ds))))))
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(define disarm (facet-prevent-inert-check! this-facet))
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(define ds (ref (dataspace)))
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(box this-turn ds 500000 100000)
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(client this-turn ds))))
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@ -4,6 +4,8 @@
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(define deps '(
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"base"
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"auxiliary-macro-context"
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"preserves"
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"struct-defaults"
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@ -0,0 +1,204 @@
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#lang racket/base
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(provide this-turn
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this-facet
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this-actor
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action
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entity
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actor-system
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with-fresh-turn
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ref
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react
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define-field
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stop-facet
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stop-current-facet
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on-start
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on-stop
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sync!
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send!
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spawn
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begin/dataflow
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define/dataflow
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this-target
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at
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assert
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(rename-out [event:when when])
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during)
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(require racket/match)
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(require racket/stxparam)
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(require (for-syntax racket/base))
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(require (for-syntax racket/syntax))
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(require "actor.rkt")
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(require (prefix-in actor: "actor.rkt"))
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(require "event-expander.rkt")
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(define-syntax-parameter this-turn
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(lambda (stx)
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(raise-syntax-error #f "Illegal use outside an Actor turn" stx)))
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(define-syntax-rule (with-this-turn id expr ...)
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(syntax-parameterize ([this-turn (make-rename-transformer #'id)])
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expr ...))
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(define-syntax this-facet
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(syntax-id-rules ()
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[_ (turn-active-facet this-turn)]))
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(define-syntax this-actor
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(syntax-id-rules ()
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[_ (facet-actor this-facet)]))
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(define-syntax-rule (action formals expr ...)
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(lambda (turn . formals)
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(with-this-turn turn expr ...)))
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(define-syntax-rule (actor-system expr ...)
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(actor:actor-system (action () expr ...)))
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(define-syntax-rule (with-fresh-turn expr ...)
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(turn-freshen this-turn (action () expr ...)))
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(define-syntax-rule (ref e)
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(turn-ref this-turn e))
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(define-syntax-rule (react setup-expr ...)
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(turn-facet! this-turn (action () setup-expr ...)))
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(define-syntax-rule (define-field id initial-value)
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(define id (turn-field! this-turn 'id initial-value)))
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(define-syntax stop-facet
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(syntax-rules ()
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[(_ f) (turn-stop! this-turn f)]
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[(_ f expr ...) (turn-stop! this-turn f (action () expr ...))]))
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(define-syntax-rule (stop-current-facet expr ...)
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(stop-facet this-facet expr ...))
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(define-syntax-rule (on-start expr ...)
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;; TODO: delay to end of turn (?)
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(begin expr ...))
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(define-syntax-rule (on-stop expr ...)
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(facet-on-stop! this-facet (action () expr ...)))
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(define-syntax-rule (sync! peer expr ...)
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(turn-sync! this-turn peer (action (_reply) expr ...)))
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(define-syntax-rule (send! peer assertion)
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(turn-message! this-turn peer assertion))
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(define-syntax-rule (spawn setup-expr ...)
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(turn-spawn! this-turn (action () setup-expr ...)))
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(define-syntax-rule (begin/dataflow expr ...)
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(turn-dataflow! this-turn (action () expr ...)))
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(define-syntax-rule (define/dataflow id expr)
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(begin (define-field id #f)
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(begin/dataflow (id expr))))
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;;---------------------------------------------------------------------------
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(define-for-syntax orig-insp
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(variable-reference->module-declaration-inspector (#%variable-reference)))
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(define-syntax-parameter this-target
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(lambda (stx)
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(raise-syntax-error #f "Illegal use outside an Actor turn" stx)))
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(define-syntax (at stx)
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(syntax-case stx ()
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[(_ target-expr items ...)
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#`(let ((target target-expr))
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(syntax-parameterize ([this-target (make-rename-transformer #'target)])
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#,@(for/list [(item-stx (in-list (syntax->list #'(items ...))))]
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(let loop ((item-stx item-stx))
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(define disarmed-item-stx (syntax-disarm item-stx orig-insp))
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(syntax-case disarmed-item-stx ()
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[(expander args ...)
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(event-expander-id? #'expander)
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(event-expander-transform disarmed-item-stx
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(lambda (r) (loop (syntax-rearm r item-stx))))]
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[_
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item-stx])))))]))
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(define-event-expander assert
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(syntax-rules ()
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[(_ expr)
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(turn-assert/dataflow! this-turn this-target (action () expr))]))
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(require "schemas/gen/dataspace.rkt")
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(define-event-expander event:when
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(lambda (stx)
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(syntax-case stx (message asserted)
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[(_ (message (label fields ...)) expr ...)
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#`(assert (Observe->preserves
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(Observe 'label
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(ref (entity #:message
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(action (rec)
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(match (#,(format-id #'label "parse-~a" (syntax-e #'label)) rec)
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[(? eof-object?) (void)]
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[(label fields ...)
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expr ...])))))))]
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[(_ (asserted (label fields ...)) expr ...)
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#`(assert (Observe->preserves
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(Observe 'label
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(ref (entity #:assert
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(action (rec handle)
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(match (#,(format-id #'label "parse-~a" (syntax-e #'label)) rec)
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[(? eof-object?) (void)]
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[(label fields ...)
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expr ...])))))))]))
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(syntax-rules ()
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[(_ test expr ...)
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(when test expr ...)]))
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(define-event-expander during
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(lambda (stx)
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(syntax-case stx ()
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[(_ (label fields ...) expr ...)
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#`(assert (Observe->preserves
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(Observe 'label
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(ref (let ((assertion-map (make-hash)))
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(entity #:assert
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(action (rec handle)
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(match (#,(format-id #'label "parse-~a" (syntax-e #'label)) rec)
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[(? eof-object?) (void)]
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[(label fields ...)
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(let ((facet (react
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(facet-prevent-inert-check! this-facet)
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expr ...)))
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(match (hash-ref assertion-map handle #f)
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[#f
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(hash-set! assertion-map handle facet)]
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['dead
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(hash-remove! assertion-map handle)
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(stop-facet facet)]
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[_
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(error 'during "Duplicate assertion handle ~a" handle)]))]))
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#:retract
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(action (handle)
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(match (hash-ref assertion-map handle #f)
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[#f
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(hash-set! assertion-map handle 'dead)]
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['dead
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(error 'during "Duplicate retraction handle ~a" handle)]
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[facet
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(hash-remove! assertion-map handle)
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(stop-facet facet)]))))))))])))
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;;---------------------------------------------------------------------------
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;;; Local Variables:
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;;; eval: (put 'action 'scheme-indent-function 1)
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;;; eval: (put 'action 'racket-indent-function 1)
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;;; End:
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