/* j/2/snag.c ** ** This file is in the public domain. */ #include "all.h" /* functions */ u3_noun u3_cqb_snag(u3_atom a, u3_noun b) { if ( u3_ne(u3_co_is_cat(a)) ) { return u3_cm_bail(c3__fail); } else { c3_w len_w = a; while ( len_w ) { if ( u3_no == u3du(b) ) { return u3_cm_bail(c3__exit); } b = u3t(b); len_w--; } if ( u3_no == u3du(b) ) { return u3_cm_bail(c3__exit); } return u3k(u3h(b)); } } u3_noun u3_cwb_snag(u3_noun cor) { u3_noun a, b; if ( (u3_no == u3_cr_mean(cor, u3_cv_sam_2, &a, u3_cv_sam_3, &b, 0)) || (u3_no == u3ud(a)) ) { return u3_cm_bail(c3__exit); } else { return u3_cqb_snag(a, b); } }