u3: rewrites +scag jet using u3i_defcons()
*/
#include "all.h"
-
-/* functions
-*/
u3_noun
- u3qb_scag(u3_atom a,
- u3_noun b)
+u3qb_scag(u3_atom a, u3_noun b)
{
if ( u3_nul == b ) {
return u3_nul;
return u3m_bail(c3__fail);
}
else {
- u3_noun acc = u3_nul;
- c3_w i_w = a;
+ u3_noun pro;
+ u3_noun* lit = &pro;
- if ( !i_w )
- return u3_nul;
+ {
+ c3_w len_w = (c3_w)a;
+ u3_noun* hed;
+ u3_noun* tel;
+ u3_noun i, t = b;
+
+ while ( len_w-- && (u3_nul != t) ) {
+ u3x_cell(t, &i, &t);
- while ( i_w ) {
- if ( c3n == u3du(b) ) {
- return u3kb_flop(acc);
+ *lit = u3i_defcons(&hed, &tel);
+ *hed = u3k(i);
+ lit = tel;
}
- acc = u3nc(u3k(u3h(b)), acc);
- b = u3t(b);
- i_w--;
}
- return u3kb_flop(acc);
+ *lit = u3_nul;
+
+ return pro;
}
}
u3wb_scag(u3_noun cor)
{
u3_noun a, b;
+ u3x_mean(cor, u3x_sam_2, &a, u3x_sam_3, &b, 0);
- if ( (c3n == u3r_mean(cor, u3x_sam_2, &a, u3x_sam_3, &b, 0)) ||
- (c3n == u3ud(a) && u3_nul != b) )
- {
+ if ( (c3n == u3ud(a)) && (u3_nul != b) ) {
return u3m_bail(c3__exit);
- } else {
- return u3qb_scag(a, b);
- }
}
+ return u3qb_scag(a, b);
+}
