Hullo all,
I'm messing around with syntax properties to try to get a feel for them, but in
one of my tests they aren't behaving the way I would expect them to.
In my example the output is #f 1 #f, when I would have thought it would be #f 1
2. Why is the third result #f and not 2?
#lang racket
(define-syntax (annotate stx)
(syntax-case stx ()
[(_ val) ; read
(or (syntax-property #'val 'annotation) #'#f)]
[(_ val ann) ; write
(syntax-property #'val 'annotation #'ann #t)]))
(annotate 4) ; -> #f
(annotate 1 6) ; -> 1
(annotate (annotate 4 2)) ; -> 2
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