urbit/j/6/ut_fink.c
2014-10-06 10:17:33 -07:00

80 lines
1.8 KiB
C

/* j/6/fink.c
**
** This file is in the public domain.
*/
#include "all.h"
/* logic
*/
u3_noun
_cqfu_fink(
u3_noun van,
u3_noun sut,
u3_noun dep,
u3_noun way,
u3_noun cog)
{
u3_noun dun = u3_cqfu_dunq(van, "type", sut);
u3_noun nuc = (u3_blip == cog)
? u3_cqfu_shew
(van,
u3nc
(u3nc('c', u3_ci_string("find-limb")),
'$'))
: u3_cqfu_shep
(van, "find-limb", 'a', u3k(cog));
u3_noun pro;
u3_ct_push(u3nc(c3__mean, dun));
u3_ct_push(u3nc(c3__mean, nuc));
{
u3_noun hoq = u3_cqfu_find(van, sut, dep, way, cog);
u3_noun fin = u3t(hoq);
if ( u3_nul == fin ) {
u3_cm_p("cog", cog);
return u3_cm_error("find-none");
}
else {
pro = u3k(u3t(fin));
u3z(hoq);
}
}
u3_ct_drop();
u3_ct_drop();
return pro;
}
/* boilerplate
*/
u3_noun
u3_cwfu_fink(u3_noun cor)
{
u3_noun sut, dep, way, cog, van;
if ( (u3_no == u3_cr_mean(cor, u3_cv_sam_2, &dep,
u3_cv_sam_6, &way,
u3_cv_sam_7, &cog,
u3_cv_con, &van,
0)) ||
(u3_none == (sut = u3_cr_at(u3_cv_sam, van))) )
{
return u3_cm_bail(c3__fail);
} else {
return _cqfu_fink(van, sut, dep, way, cog);
}
}
u3_noun
u3_cqfu_fink(
u3_noun van,
u3_noun sut,
u3_noun dep,
u3_noun way,
u3_noun cog)
{
return _cqfu_fink(van, sut, dep, way, cog);
}