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/// @file
#include "jets/q.h"
#include "jets/w.h"
#include "noun.h"
u3_weak
u3qc_sew(u3_atom a,
u3_atom b,
u3_atom c,
u3_atom d,
u3_atom e
)
{
c3_w b_w, c_w;
if (0 == c) return u3k(e);
if ( !_(u3r_safe_word(b, &b_w)) ||
!_(u3r_safe_word(c, &c_w)) ) {
return u3_none;
}
if ( !_(u3a_is_cat(a)) || (a >= 32) ) {
return u3m_bail(c3__fail);
}
c3_g a_g = a;
c3_w len_e_w = u3r_met(a_g, e);
u3i_slab sab_u;
c3_w* src_w;
c3_w len_src_w;
if ( _(u3a_is_cat(e)) ) {
len_src_w = e ? 1 : 0;
src_w = &e;
}
else {
u3a_atom* src_u = u3a_to_ptr(e);
len_src_w = src_u->len_w;
src_w = src_u->buf_w;
}
u3i_slab_init(&sab_u, a_g, c3_max(len_e_w, b_w + c_w));
u3r_chop_words(a_g, 0, b_w, 0, sab_u.buf_w, len_src_w, src_w);
u3r_chop(a_g, 0, c_w, b_w, sab_u.buf_w, d);
if (len_e_w > b_w + c_w) {
u3r_chop_words(a_g,
b_w + c_w,
len_e_w - (b_w + c_w),
b_w + c_w,
sab_u.buf_w,
len_src_w,
src_w);
}
return u3i_slab_mint(&sab_u);
}
u3_weak
u3wc_sew(u3_noun cor)
{
u3_noun a, b, c, d, e;
if ( (c3n == u3r_mean(cor, u3x_sam_2, &a,
u3x_sam_12, &b,
106, &c,
107, &d,
u3x_sam_7, &e, 0)) ||
(c3n == u3ud(a)) ||
(c3n == u3ud(b)) ||
(c3n == u3ud(c)) ||
(c3n == u3ud(d)) ||
(c3n == u3ud(e)) )
{
return u3m_bail(c3__fail);
} else {
return u3qc_sew(a, b, c, d, e);
}
}
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