21 lines
907 B
Racket
21 lines
907 B
Racket
#lang syndicate/actor
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;; Demonstrates that fields may used in a child facet of a declaring
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;; facet, but not the other way around.
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(actor #:name 'reading-actor
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(field [top 123])
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(on (message `(read-from ,$this-field))
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(log-info "Trying to read from ~a" this-field)
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(log-info "Read: ~a" (this-field))
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(send! `(read-successfully ,this-field)))
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(on-start
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(react (field [inner 234])
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(on-start
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(log-info "Inner access to ~a: ~a" top (top)) ;; OK
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(log-info "Inner access to ~a: ~a" inner (inner)) ;; OK
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(send! `(read-from ,top)) ;; OK
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(until (message `(read-successfully ,top)))
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(send! `(read-from ,inner)) ;; Will cause a failure.
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(until (message `(read-successfully ,inner))) ;; Will never happen.
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(log-info "Done.")))))
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