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106 lines
2.6 KiB
C
106 lines
2.6 KiB
C
/* j/3/cue.c
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**
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** This file is in the public domain.
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*/
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#include "all.h"
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#include "../pit.h"
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#include "f/nash.h"
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/* functions
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*/
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struct u2_nash* T_r;
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static u2_noun // produce
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_cue_in(u2_wire wir_r,
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u2_atom a, // retain
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u2_atom b) // retain
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{
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u2_noun p, q;
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if ( _0 == j2_mbc(Pt3, cut)(wir_r, 0, b, 1, a) ) {
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u2_noun x = j2_mbc(Pt1, inc)(wir_r, b);
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u2_noun c = j2_mby(Pt5, rub)(wir_r, x, a);
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p = j2_mbc(Pt1, inc)(wir_r, u2_h(c));
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q = u2_rx(wir_r, u2_t(c));
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u2_na_put(T_r, b, q);
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u2_rz(wir_r, c);
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u2_rz(wir_r, x);
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}
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else {
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u2_noun c = j2_mbc(Pt1, add)(wir_r, _2, b);
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u2_noun l = j2_mbc(Pt1, inc)(wir_r, b);
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if ( _0 == j2_mbc(Pt3, cut)(wir_r, 0, l, 1, a) ) {
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u2_noun u, v, w;
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u2_noun x, y;
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u = _cue_in(wir_r, a, c);
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x = j2_mbc(Pt1, add)(wir_r, u2_h(u), c);
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v = _cue_in(wir_r, a, x);
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w = u2_bc(wir_r, u2_rx(wir_r, u2_h(u2_t(u))),
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u2_rx(wir_r, u2_h(u2_t(v))));
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y = j2_mbc(Pt1, add)(wir_r, u2_h(u), u2_h(v));
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p = j2_mbc(Pt1, add)(wir_r, _2, y);
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q = w;
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u2_na_put(T_r, b, q);
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u2_rz(wir_r, u); u2_rz(wir_r, v); u2_rz(wir_r, x); u2_rz(wir_r, y);
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}
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else {
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u2_noun d = j2_mby(Pt5, rub)(wir_r, c, a);
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u2_noun x = u2_na_get(T_r, u2_t(d));
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p = j2_mbc(Pt1, add)(wir_r, _2, u2_h(d));
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if ( u2_none == x ) {
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return u2_bl_bail(wir_r, c3__exit);
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}
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q = u2_rx(wir_r, x);
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u2_rz(wir_r, d);
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}
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u2_rz(wir_r, l);
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u2_rz(wir_r, c);
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}
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return u2_bt(wir_r, p, q, 0);
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}
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u2_noun // transfer
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j2_mby(Pt5, cue)(u2_wire wir_r,
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u2_atom a) // retain
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{
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T_r = u2_na_make();
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u2_noun x = _cue_in(wir_r, a, _0);
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u2_noun y = u2_rx(wir_r, u2_h(u2_t(x)));
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u2_na_take(T_r);
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T_r = 0;
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u2_rz(wir_r, x);
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return y;
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}
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u2_noun // transfer
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j2_mb(Pt5, cue)(u2_wire wir_r,
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u2_noun cor) // retain
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{
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u2_noun a;
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if ( (u2_none == (a = u2_frag(u2_cv_sam, cor))) ) {
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return u2_bl_bail(wir_r, c3__fail);
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} else {
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return j2_mby(Pt5, cue)(wir_r, a);
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}
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}
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/* structures
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*/
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u2_ho_jet
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j2_mbj(Pt5, cue)[] = {
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{ ".2", c3__hevy, j2_mb(Pt5, cue), Tier3, u2_none, u2_none },
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{ }
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};
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