Ejemplo n.º 1
0
/* _gate_pick()::
*/
static u4_gene
_gate_pick(u4_milr m,
           u4_noun bec)
{
  u4_lane lane = m->lane;

  if ( u4_n_zero(bec) ) {
    return _mill_fail(m, "pick: empty");
  }
  else {
    u4_form hem = u4_ch(bec);

    return u4_k_qual
      (lane,
       u4_atom_trop,
       _gate_arg(m, hem),
       u4_atom_lome,
       u4_k_trel
        (lane,
         u4_atom_gril,
         u4_k_cell(lane, u4_k_cell(lane, u4_atom_frag, u4_noun_4), u4_noun_0),
         _gate_pick_in(m, bec)));
  }
}
Ejemplo n.º 2
0
/* _mill_hunt(): rope to tape.
*/
u4_tape
_mill_hunt(u4_milr m,
           u4_rope dap,
           u4_type fim,
           u4_axis *axe,
           u4_type *buv)
{
  u4_lane lane = m->lane;

  if ( u4_n_zero(dap) ) {
    if ( buv ) {
      *buv = fim;
    }
    return u4_noun_0;
  }
  else {
    u4_knot i_dap = u4_ch(dap);
    u4_rope t_dap = u4_ct(dap);
    u4_axis mar;
    u4_tick tik;
    u4_term cox;

    if ( _is_frag(i_dap, &mar) ) {
      u4_type gey = _mill_peek(m, mar, u4_noun_0, fim);

      *axe = u4_op_peg(lane, *axe, mar);

      return u4_k_cell
        (lane, u4_k_cell(lane, u4_atom_axis, mar),
               _mill_hunt(m, t_dap, gey, axe, buv));
    }
    else if ( _is_lect(i_dap, &tik, &cox) ) {
      u4_loaf zib = _mill_find(m, cox, u4_noun_0, fim);

      if ( u4_n_zero(zib) ) {
        u4_burp(lane, "mark", u4_prep_textual(lane, cox));
        u4_burp(lane, "type", _mill_dump(m, fim));

        return _mill_fail(m, "look: no port");
      }
      else {
        u4_type gey = u4_ch(zib);
   
        if ( !u4_b_p(u4_ct(zib), u4_noun_0, &mar) ) {
          return _mill_fail(m, "heavy rope");
        }
        else {
          u4_rope guz;

          guz = u4_n_zero(tik)
            ? t_dap
            : u4_k_cell
              (lane, u4_k_trel(lane, u4_atom_lect, u4_op_dec(lane, tik), cox),
                     t_dap);

          *axe = u4_op_peg(lane, *axe, mar);

          if ( u4_n_eq(u4_noun_1, mar) ) {
            return u4_k_cell
              (lane, u4_k_cell(lane, u4_atom_term, cox),
                     _mill_hunt(m, guz, gey, axe, buv));
          }
          else {
            return u4_k_trel
              (lane, u4_k_cell(lane, u4_atom_axis, mar),
                     u4_k_cell(lane, u4_atom_term, cox),
                     _mill_hunt(m, guz, gey, axe, buv));
          }
        }
      }
    }
    else return u4_trip;
  }
}
Ejemplo n.º 3
0
/* _look_knot(): read a step on a rope.
*/
u4_loaf
_look_knot(u4_milr m,
           u4_knot vor,
           u4_mold typ)
{
  u4_lane lane = m->lane;
  u4_tick tik;
  u4_term cox;
  u4_axis axe;
  u4_loaf fod;

  if ( _is_port(vor, &tik, &cox) ) {
    fod = _mill_find(m, cox, u4_noun_0, typ);

    if ( u4_n_zero(fod) ) {
      u4_burp(lane, "mold", _mill_dump(m, typ));
      u4_burp(lane, "mark", u4_prep_textual(lane, cox));

      return _mill_fail(m, "look: not found");
    }
    else if ( u4_n_zero(tik) ) {
      return fod;
    }
    else {
      u4_mold lem = u4_ch(fod);
      u4_nock vil = u4_ct(fod);
      u4_noun p_vil;
      u4_mold ger;

      vor = u4_k_trel(lane, u4_atom_port, u4_op_dec(lane, tik), cox);

      if ( u4_b_p(vil, u4_noun_0, &axe) ) {
        ger = lem;
      }
      else if ( u4_b_pq(vil, u4_noun_3, &p_vil, 0) &&
                u4_b_p(p_vil, u4_noun_0, &axe) &&
                u4_b_pq(lem, u4_atom_hold, &ger, 0) )
      {
        axe = u4_op_peg(lane, axe, u4_noun_2);
        vil = u4_k_cell(lane, u4_noun_0, axe);
        ger = _mill_peek(m, u4_noun_2, u4_noun_0, ger);
      }
      else return u4_trip;

      fod = _look_knot(m, vor, ger);

      if ( u4_n_zero(fod) ) {
        u4_burp(lane, "mold", _mill_dump(m, typ));
        u4_burp(lane, "mark", u4_prep_textual(lane, cox));

        return _mill_fail(m, "look: no grip");
      }
      else {
        return u4_k_cell
          (lane, u4_ch(fod), _mill_comp(m, vil, u4_ct(fod)));
      }
    }
  }
  else if ( _is_frag(vor, &axe) ) {
    return u4_k_trel
      (lane, _mill_peek(m, axe, u4_noun_0, typ), 
             u4_noun_0, 
             axe);
  }
  else return u4_trip;
}