Hey Matt, Yeah that was exactly my workaround 🙂 I was wondering whether i could use the syntax transformer more "directly" from C, or something like that.
Thanks, paul > On 11 Sep 2021, at 23:31, Matt Wette <matt.we...@gmail.com> wrote: > > maybe add > > (define (make-foo-x a b) (make-foo a b)) > > then call make-foo-x (or reverse names) > >> On 9/10/21 7:27 PM, paul wrote: >> Good day guile-users, >> >> I am having a struggle with SRFI-9 records. They look very convenient, so >> i'd like to use them in my Guile scripts. However, i'm not sure how to >> correctly construct them from C-land. I have something like the following: >> >> ``` >> (define-record-type <foo> >> (make-foo a b) >> foo? >> (a foo-a) >> (b foo-b)) >> ``` >> >> In Guile land, that works great. Now, i want to create a foo in C and pass >> it to a function in the Guile script. I do something like the following: >> >> ``` >> scm_c_primitive_load("foo.scm"); >> scm_call_5(scm_variable_ref(scm_c_lookup("make-foo")), >> scm_from_utf8_string("blah"), >> scm_from_int32(Int32(42))) >> ``` >> >> However, this results in an error: >> >> guile: uncaught exception: >> Wrong type to apply: #<syntax-transformer make-foo> >> >> I've tried with and without (define-module foo) at the top of the file, that >> doesn't seem to make a difference. I've been able to work around the issue >> by defining a wrapper (define (foo-prime a b) (make-foo a b)) and using that >> in C as shown above, but that feels ugly. I'm probably missing something >> obvious, but trawling the mailing list didn't turn up anything i could >> understand. >> >> Does anyone see what i'm doing wrong, or can i simply not use SRFI-9 records >> in this way? >> >> Thanks, 🙌 >> p. >> > >