/* j/4/in_uni.c
**
** This file is in the public domain.
*/
#include "all.h"
#include "../pit.h"

/* functions
*/
  u2_weak                                                         //  transfer
  j2_mcc(Pt4, in, uni)(u2_wire wir_r,
                       u2_noun a,                                 //  retain
                       u2_noun b)                                 //  retain
  {
    if ( u2_nul == a ) {
      return u2_rx(wir_r, b);
    }
    else if ( u2_nul == b ) {
      return u2_rx(wir_r, a);
    }
    else {
      u2_noun l_a, n_a, r_a, lr_a;
      u2_noun l_b, n_b, r_b, lr_b;

      if ( (u2_no == u2_as_cell(a, &n_a, &lr_a)) ) {
        return u2_bl_bail(wir_r, c3__exit);
      }
      else if ( (u2_no == u2_as_cell(b, &n_b, &lr_b)) ) {
        return u2_bl_bail(wir_r, c3__exit);
      }
      else {
        if ( u2_yes == j2_mbc(Pt3, vor)(wir_r, n_a, n_b) ) {
          if ( u2_no == u2_as_cell(lr_a, &l_a, &r_a) ) {
            return u2_bl_bail(wir_r, c3__exit);
          }
          else if ( u2_no == u2_as_cell(lr_b, &l_b, &r_b) ) {
            return u2_bl_bail(wir_r, c3__exit);
          }
          else if ( u2_yes == u2_sing(n_a, n_b) ) {
            return u2_rt(
              wir_r,
              u2_rx(wir_r, n_b),
              j2_mcc(Pt4, in, uni)(wir_r, u2_rx(wir_r, l_a), u2_rx(wir_r, l_b)),
              j2_mcc(Pt4, in, uni)(wir_r, u2_rx(wir_r, r_a), u2_rx(wir_r, r_b)));
          }
          else if ( u2_yes == j2_mbc(Pt3, hor)(wir_r, n_b, n_a) ) {
            return j2_mcc(Pt4, in, uni)(
              wir_r,
              u2_rt(wir_r,
                    u2_rx(wir_r, n_a),
                    j2_mcc(Pt4, in, uni)(wir_r,
                                         u2_rx(wir_r, l_a),
                                         u2_rt(wir_r,
                                               u2_rx(wir_r, n_b),
                                               u2_rx(wir_r, l_b),
                                               u2_rx(wir_r, u2_nul))),
                    u2_rx(wir_r, r_a)),
              u2_rx(wir_r, r_b));
          }
          else {
            return j2_mcc(Pt4, in, uni)(
              wir_r,
              u2_rt(wir_r,
                    u2_rx(wir_r, n_a),
                    u2_rx(wir_r, l_a),
                    j2_mcc(Pt4, in, uni)(wir_r,
                                         u2_rx(wir_r, r_a),
                                         u2_rt(wir_r,
                                               u2_rx(wir_r, n_b),
                                               u2_rx(wir_r, u2_nul),
                                               u2_rx(wir_r, r_b)))),
              u2_rx(wir_r, l_b));
          }
        }
        else if ( u2_no == u2_as_cell(lr_b, &l_b, &r_b) ) {
          return u2_bl_bail(wir_r, c3__exit);
        }
        else if ( u2_no == u2_as_cell(lr_a, &l_a, &r_a) ) {
          return u2_bl_bail(wir_r, c3__exit);
        }
        else if ( u2_yes == u2_sing(n_b, n_a) ) {
          return u2_rt(
            wir_r,
            u2_rx(wir_r, n_b),
            j2_mcc(Pt4, in, uni)(wir_r, u2_rx(wir_r, r_b), u2_rx(wir_r, r_a)),
            j2_mcc(Pt4, in, uni)(wir_r, u2_rx(wir_r, l_b), u2_rx(wir_r, l_a)));
        }
        else if ( u2_yes == j2_mbc(Pt3, hor)(wir_r, n_a, n_b) ) {
          return j2_mcc(Pt4, in, uni)(
            wir_r,
            u2_rx(wir_r, r_a),
            u2_rt(wir_r,
                  u2_rx(wir_r, n_b),
                  j2_mcc(Pt4, in, uni)(wir_r,
                                      u2_rt(wir_r,
                                            u2_rx(wir_r, n_a),
                                            u2_rx(wir_r, l_a),
                                            u2_nul),
                                      u2_rx(wir_r, l_b)),
                  u2_rx(wir_r, r_b)));
        }
        else {
          return j2_mcc(Pt4, in, uni)(
            wir_r,
            u2_rx(wir_r, l_a),
            u2_rt(wir_r,
                  u2_rx(wir_r, n_b),
                  u2_rx(wir_r, l_b),
                  j2_mcc(Pt4, in, uni)(wir_r,
                                      u2_rt(wir_r,
                                            u2_rx(wir_r, n_a),
                                            u2_rx(wir_r, u2_nul),
                                            u2_rx(wir_r, r_a)),
                                      u2_rx(wir_r, r_b))));
        }
      }
    }
  }
  u2_weak                                                         //  transfer
  j2_mc(Pt4, in, uni)(u2_wire wir_r,
                      u2_noun cor)                                //  retain
  {
    u2_noun a, b;

    if ( u2_no == u2_mean(cor, u2_cv_sam, &b, u2_cv_con_sam, &a, 0) ) {
      return u2_bl_bail(wir_r, c3__exit);
    } else {
      return j2_mcc(Pt4, in, uni)(wir_r, a, b);
    }
  }

/* structures
*/
  u2_ho_jet
  j2_mcj(Pt4, in, uni)[] = {
    { ".2", c3__lite, j2_mc(Pt4, in, uni), Tier4, u2_none, u2_none },
    { }
  };