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add scm_c_program_source

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* libguile/programs.h:
* libguile/programs.c (scm_c_program_source): New helper for getting
  source information from C.
This commit is contained in:
Andy Wingo 2008-12-26 16:36:53 +01:00
parent e052d29640
commit 9a9f64874a
2 changed files with 20 additions and 0 deletions
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18
libguile/programs.c
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@ -199,6 +199,24 @@ SCM_DEFINE (scm_program_meta, "program-meta", 1, 0, 0,
}
#undef FUNC_NAME
extern SCM
scm_c_program_source (struct scm_program *p, size_t ip)
{
SCM meta, sources, source;
if (scm_is_false (p->meta))
return SCM_BOOL_F;
meta = scm_call_0 (p->meta);
if (scm_is_false (meta))
return SCM_BOOL_F;
sources = scm_cadr (meta);
source = scm_assv (scm_from_size_t (ip), sources);
if (scm_is_false (source))
return SCM_BOOL_F;
return scm_cdr (source); /* a #(line column file) vector */
}
SCM_DEFINE (scm_program_objects, "program-objects", 1, 0, 0,
(SCM program),
"")