Hi, I'm having trouble writing a syntax transformer that uses a
syntax-generating procedure defined elsewhere.
When the procedure is defined locally, everything is fine.
When the procedure is defined outside the transformer, I have to do a dance
to make the procedure visible at the right phase, which seems to work.
However, upon use I get:
> racket unbound-identifier.rkt
unbound-identifier.rkt:9:7: lambda: unbound identifier;
also, no #%app syntax transformer is bound
context...:
#(1973 module unbound-identifier 0) #(2181 module) #(2811 macro) #(2822
local)
#(2823 intdef) #(2824 module (unbound-identifier utilities) -1)
other binding...:
#<module-path-index:(racket)>
#(1972 module) #(1973 module unbound-identifier 0)
at: lambda
in: (lambda (i) (displayln (quasiquote (input: (unquote input)))))
context...:
standard-module-name-resolver
I wrote this self-contained example using a submodule, but the error also
occurs when requiring the module from another file. What am I doing
wrong? I imagine it's something silly.
#lang racket
(provide this-works this-does-not-work)
(module utilities racket/base
(provide compile-test)
(define (compile-test)
#`(lambda (i) (displayln `(input: ,input)))))
(require (for-syntax 'utilities))
(define-syntax (this-works stx)
(syntax-case stx ()
((_ input)
(let ()
(define (compile-test)
#`(lambda (i) (displayln `(input: ,input))))
#`(#,(compile-test) input)))))
(define-syntax (this-does-not-work stx)
(syntax-case stx ()
((_ input to-do ...)
(let ()
#`(#,(compile-test) input)))))
(this-works 3)
(this-does-not-work 3)
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