mirror of
https://github.com/urbit/shrub.git
synced 2024-12-22 10:21:31 +03:00
74 lines
1.1 KiB
C
74 lines
1.1 KiB
C
/* g/x.c
|
|
**
|
|
** This file is in the public domain.
|
|
*/
|
|
#include "all.h"
|
|
|
|
/* u3_cx_good(): test for u3_none.
|
|
*/
|
|
u3_noun
|
|
u3_cx_good(u3_weak som)
|
|
{
|
|
if ( u3_none == som ) {
|
|
return u3_cm_bail(c3__exit);
|
|
}
|
|
else return som;
|
|
}
|
|
|
|
/* u3_cx_at (u3at): fragment.
|
|
*/
|
|
u3_noun
|
|
u3_cx_at(u3_noun axe, u3_noun som)
|
|
{
|
|
u3_weak pro = u3_cr_at(axe, som);
|
|
|
|
if ( u3_none == pro ) {
|
|
return u3_cm_bail(c3__exit);
|
|
} else return pro;
|
|
}
|
|
|
|
/* u3_cx_cell():
|
|
**
|
|
** Divide `a` as a cell `[b c]`.
|
|
*/
|
|
void
|
|
u3_cx_cell(u3_noun a,
|
|
u3_noun* b,
|
|
u3_noun* c)
|
|
{
|
|
if ( u3_no == u3_cr_cell(a, b, c) ) {
|
|
u3_cm_bail(c3__exit);
|
|
}
|
|
}
|
|
|
|
/* u3_cx_trel():
|
|
**
|
|
** Divide `a` as a trel `[b c d]`, or bail.
|
|
*/
|
|
void
|
|
u3_cx_trel(u3_noun a,
|
|
u3_noun* b,
|
|
u3_noun* c,
|
|
u3_noun* d)
|
|
{
|
|
if ( u3_no == u3_cr_trel(a, b, c, d) ) {
|
|
u3_cm_bail(c3__exit);
|
|
}
|
|
}
|
|
|
|
/* u3_cx_qual():
|
|
**
|
|
** Divide `a` as a quadruple `[b c d e]`.
|
|
*/
|
|
void
|
|
u3_cx_qual(u3_noun a,
|
|
u3_noun* b,
|
|
u3_noun* c,
|
|
u3_noun* d,
|
|
u3_noun* e)
|
|
{
|
|
if ( u3_no == u3_cr_qual(a, b, c, d, e) ) {
|
|
u3_cm_bail(c3__exit);
|
|
}
|
|
}
|