shrub/jets/f/ut_nest.c

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/* j/6/ut_nest.c
**
*/
#include "all.h"
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/* logic
*/
/* forward
*/
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static u3_noun
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_nest_sint(u3_noun, u3_noun, u3_noun, u3_noun, u3_noun, u3_noun, u3_noun);
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static u3_noun
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_nest_dext(u3_noun, u3_noun, u3_noun, u3_noun, u3_noun, u3_noun, u3_noun);
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static u3_noun
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_nest_cram(u3_noun van,
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u3_noun sut,
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u3_noun tel,
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u3_noun ref,
u3_noun dab,
u3_noun hem,
u3_noun gil)
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{
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if ( u3_nul == dab ) {
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return u3r_sing(u3_nul, hem);
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} else if ( u3_nul == hem ) {
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return c3n;
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} else {
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u3_noun n_dab, l_dab, r_dab;
u3_noun n_hem, l_hem, r_hem;
u3_noun pn_hem, qn_hem, pn_dab, qn_dab;
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u3x_trel(dab, &n_dab, &l_dab, &r_dab);
u3x_trel(hem, &n_hem, &l_hem, &r_hem);
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if ( (c3n == _nest_cram(van, sut, tel, ref, l_dab, l_hem, gil)) ||
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(c3n == _nest_cram(van, sut, tel, ref, r_dab, r_hem, gil)) )
{
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return c3n;
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}
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u3x_cell(n_dab, &pn_dab, &qn_dab);
u3x_cell(n_hem, &pn_hem, &qn_hem);
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if ( c3n == u3r_sing(pn_dab, pn_hem) ) {
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return c3n;
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} else {
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if ( (c3n == u3du(qn_dab)) || (c3n == u3du(qn_hem)) ) {
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return u3m_bail(c3__fail);
}
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else switch ( u3h(qn_dab) ) {
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default: return u3m_bail(c3__exit);
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case c3__ash: {
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if ( c3__ash != u3h(qn_hem) ) {
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return c3n;
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} else {
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u3_noun pqn_dab = u3t(qn_dab);
u3_noun pqn_hem = u3t(qn_hem);
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u3_noun vis = u3qfu_play(van, sut, pqn_dab);
u3_noun lon = u3qfu_play(van, ref, pqn_hem);
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u3_noun ret = _nest_dext(van, vis, tel, lon, u3_nul, u3_nul, gil);
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u3z(vis);
u3z(lon);
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return ret;
}
}
case c3__elm: {
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return u3r_sing(qn_dab, qn_hem);
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}
}
}
}
}
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static u3_noun
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_nest_cong(u3_noun van,
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u3_noun sut,
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u3_noun tel,
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u3_noun ref,
u3_noun gil)
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{
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u3_noun p_sut, q_sut, p_ref, q_ref;
u3_noun pq_sut, qq_sut, rq_sut;
u3_noun pq_ref, qq_ref, rq_ref;
u3_noun prq_sut, qrq_sut, prq_ref, qrq_ref;
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u3_noun ret;
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u3x_trel(sut, 0, &p_sut, &q_sut);
u3x_trel(ref, 0, &p_ref, &q_ref);
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u3x_trel(q_sut, &pq_sut, &qq_sut, &rq_sut);
u3x_trel(q_ref, &pq_ref, &qq_ref, &rq_ref);
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u3x_cell(rq_sut, &prq_sut, &qrq_sut);
u3x_cell(rq_ref, &prq_ref, &qrq_ref);
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if ( c3y == u3r_sing(q_sut, q_ref) ) {
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return _nest_dext(van, p_sut, tel, p_ref, u3_nul, u3_nul, gil);
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}
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else if ( (c3n == _nest_dext
(van, qq_sut, tel, p_sut, u3_nul, u3_nul, gil)) ||
(c3n == _nest_dext
(van, p_sut, tel, qq_sut, u3_nul, u3_nul, gil)) ||
(c3n == _nest_dext
(van, qq_ref, tel, p_ref, u3_nul, u3_nul, gil)) )
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{
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return c3n;
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}
else {
if ( (pq_sut != pq_ref) && (c3__gold != pq_ref) ) {
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return c3n;
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}
else {
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u3_noun hud = u3nc(u3k(sut), u3k(ref));
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if ( (c3y == u3qdi_has(gil, hud)) ) {
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u3z(hud);
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return c3y;
}
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else {
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u3_noun zoc = u3qdi_put(gil, hud);
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u3_noun tus = u3nt(c3__core,
u3k(qq_sut),
u3nc(c3__gold,
u3k(u3t(q_sut))));
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u3_noun fer = u3nt(c3__core,
u3k(qq_ref),
u3nc(c3__gold,
u3k(u3t(q_ref))));
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ret = _nest_cram(van, tus, tel, fer, qrq_sut, qrq_ref, zoc);
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u3z(fer);
u3z(tus);
u3z(zoc);
u3z(hud);
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if ( c3n == ret ) {
return c3n;
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}
else {
switch ( pq_sut ) {
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default: return u3m_bail(c3__fail);
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case c3__gold: {
return
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c3a(_nest_dext(van, qq_sut, tel, qq_ref, u3_nul, u3_nul, gil),
_nest_dext(van, qq_ref, tel, qq_sut, u3_nul, u3_nul, gil));
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}
case c3__iron: {
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u3_noun s_sam = u3qfu_peek(van, qq_sut, c3__rite, 2);
u3_noun r_sam = u3qfu_peek(van, qq_ref, c3__rite, 2);
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u3_noun ret = _nest_dext
(van, r_sam, tel, s_sam, u3_nul, u3_nul, gil);
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u3z(r_sam);
u3z(s_sam);
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return ret;
}
case c3__lead: {
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return c3y;
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}
case c3__zinc: {
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u3_noun s_pal = u3qfu_peek(van, qq_sut, c3__read, 2);
u3_noun r_pal = u3qfu_peek(van, qq_ref, c3__read, 2);
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u3_noun ret = _nest_dext
(van, s_pal, tel, r_pal, u3_nul, u3_nul, gil);
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u3z(r_pal);
u3z(s_pal);
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return ret;
}
}
}
}
}
}
}
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static u3_noun
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_nest_dext_in(u3_noun van,
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u3_noun sut,
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u3_noun tel,
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u3_noun ref,
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u3_noun seg,
u3_noun reg,
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u3_noun gil)
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{
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u3_noun p_sut, q_sut, p_ref, q_ref;
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if ( (c3n == u3du(sut)) ) switch ( sut ) {
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default: return u3m_bail(c3__fail);
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case c3__noun: {
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return c3y;
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}
case c3__void: {
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return _nest_sint(van, sut, tel, ref, seg, reg, gil);
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}
}
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else switch ( u3h(sut) ) {
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default: return u3m_bail(c3__fail);
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case c3__atom: {
if ( (c3n == u3r_trel(sut, 0, &p_sut, &q_sut)) ) {
return u3m_bail(c3__fail);
}
else {
if ( c3y == u3r_pq(ref, c3__atom, &p_ref, &q_ref) ) {
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if ( (c3n == u3qf_fitz(p_sut, p_ref)) ||
( (c3y == u3du(q_sut)) &&
( (c3n == u3du(q_ref)) ||
(c3n == u3r_sing(q_sut, q_ref)))) )
{
return c3n;
}
return c3y;
}
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return _nest_sint(van, sut, tel, ref, seg, reg, gil);
}
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}
case c3__cell: {
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if ( (c3n == u3r_trel(sut, 0, &p_sut, &q_sut)) ) {
return u3m_bail(c3__fail);
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} else {
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if ( c3y == u3r_pq(ref, c3__cell, &p_ref, &q_ref) ) {
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return c3a(_nest_dext(van, p_sut, tel, p_ref, u3_nul, u3_nul, gil),
_nest_dext(van, q_sut, tel, q_ref, u3_nul, u3_nul, gil));
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}
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else return _nest_sint(van, sut, tel, ref, seg, reg, gil);
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}
}
case c3__core: {
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if ( c3n == u3r_trel(sut, 0, &p_sut, &q_sut) ) {
return u3m_bail(c3__fail);
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} else {
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if ( (c3y == u3r_pq(ref, c3__core, &p_ref, &q_ref)) ) {
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return _nest_cong(van, sut, tel, ref, gil);
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}
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else return _nest_sint(van, sut, tel, ref, seg, reg, gil);
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}
}
case c3__face: {
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if ( (c3n == u3r_trel(sut, 0, &p_sut, &q_sut)) ) {
return u3m_bail(c3__fail);
} else {
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return _nest_dext(van, q_sut, tel, ref, seg, reg, gil);
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}
}
case c3__fork: {
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if ( (c3n == u3r_trel(sut, 0, &p_sut, &q_sut)) ) {
return u3m_bail(c3__fail);
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}
else {
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if ( c3n == u3du(ref) ) switch ( ref ) {
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default: return _nest_sint(van, sut, tel, ref, seg, reg, gil);
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case c3__noun:
break;
}
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else switch ( u3h(ref) ) {
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default: return _nest_sint(van, sut, tel, ref, seg, reg, gil);
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case c3__atom:
case c3__cell:
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case c3__core:
break;
}
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return c3o(_nest_dext(van, p_sut, c3n, ref, seg, reg, gil),
_nest_dext(van, q_sut, c3n, ref, seg, reg, gil));
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}
}
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case c3__hold: p_sut = u3t(sut);
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{
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if ( c3y == u3qdi_has(seg, sut) ) {
return c3n;
}
else {
u3_noun hud = u3nc(u3k(sut), u3k(ref));
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if ( (c3y == u3qdi_has(gil, hud)) ) {
u3z(hud);
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return c3y;
}
else {
u3_noun gus = u3qdi_put(seg, sut);
u3_noun zoc = u3qdi_put(gil, hud);
u3_noun fop = u3qfu_repo(van, sut);
u3_noun hiv = _nest_dext(van, fop, tel, ref, gus, reg, zoc);
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u3z(hud);
u3z(fop);
u3z(zoc);
u3z(gus);
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return hiv;
}
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}
}
}
}
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static u3_noun
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_nest_dext_to(u3_noun van,
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u3_noun sut,
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u3_noun tel,
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u3_noun ref,
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u3_noun seg,
u3_noun reg,
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u3_noun gil)
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{
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u3_noun tyn = _nest_dext_in(van, sut, tel, ref, seg, reg, gil);
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if ( (c3y == tyn) || (c3n == tel) ) {
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return tyn;
} else {
// u3_noun dun = u3qfu_dunq(van, "need", sut);
// u3_noun niz = u3qfu_dunq(van, "have", ref);
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// u3t_push(u3nc(c3__mean, dun));
// u3t_push(u3nc(c3__mean, niz));
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return u3m_error("nest-fail");
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}
}
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static u3_noun
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_nest_dext(u3_noun van,
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u3_noun sut,
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u3_noun tel,
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u3_noun ref,
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u3_noun seg,
u3_noun reg,
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u3_noun gil)
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{
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if ( (c3y == u3r_sing(sut, ref)) ) {
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return c3y;
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}
{
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c3_m fun_m = c3__nest + !!u3r_at(u3qfu_van_vet, van);
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u3_noun pro = u3z_find_2(fun_m, sut, ref);
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if ( u3_none != pro ) {
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return pro;
}
else {
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pro = _nest_dext_to(van, sut, tel, ref, seg, reg, gil);
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return u3z_save_2(fun_m, sut, ref, pro);
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}
}
}
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static u3_noun
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_nest_sint(u3_noun van,
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u3_noun sut,
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u3_noun tel,
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u3_noun ref,
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u3_noun seg,
u3_noun reg,
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u3_noun gil)
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{
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u3_noun p_ref, q_ref;
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if ( (c3n == u3du(ref)) ) {
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switch ( ref ) {
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default: return u3m_bail(c3__fail);
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case c3__noun: return c3n;
case c3__void: return c3y;
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}
}
else {
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switch ( u3h(ref) ) {
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default: {
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return u3m_bail(c3__fail);
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}
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case c3__atom: return c3n;
case c3__cell: return c3n;
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case c3__core: {
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u3_noun gam = u3qfu_repo(van, ref);
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u3_noun hiv = _nest_dext(van, sut, tel, gam, seg, reg, gil);
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u3z(gam);
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return hiv;
}
case c3__face: {
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if ( c3n == u3r_trel(ref, 0, &p_ref, &q_ref) ) {
return u3m_bail(c3__fail);
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} else {
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return _nest_dext(van, sut, tel, q_ref, seg, reg, gil);
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}
}
case c3__fork: {
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if ( (c3y == u3r_mean(ref, 6, &p_ref, 7, &q_ref, 0)) ) {
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return c3a(_nest_dext(van, sut, c3n, p_ref, seg, reg, gil),
_nest_dext(van, sut, c3n, q_ref, seg, reg, gil));
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}
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else return u3m_bail(c3__fail);
}
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case c3__hold: {
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if ( c3y == u3qdi_has(reg, ref) ) {
return c3y;
}
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{
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u3_noun hud = u3nc(u3k(sut), u3k(ref));
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if ( (c3y == u3qdi_has(gil, hud)) ) {
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u3z(hud);
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return c3y;
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} else {
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u3_noun gur = u3qdi_put(reg, ref);
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u3_noun zoc = u3qdi_put(gil, hud);
u3_noun gam = u3qfu_repo(van, ref);
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{
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u3_noun hiv = _nest_dext(van, sut, tel, gam, seg, gur, zoc);
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u3z(hud);
u3z(gam);
u3z(zoc);
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u3z(gur);
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return hiv;
}
}
}
}
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}
}
}
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u3_noun
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_cqfu_nest(u3_noun van,
u3_noun sut,
u3_noun tel,
u3_noun ref)
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{
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return _nest_dext(van, sut, tel, ref, u3_nul, u3_nul, u3_nul);
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}
/* boilerplate
*/
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u3_noun
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u3wfu_nest(u3_noun cor)
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{
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u3_noun sut, tel, ref, van;
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if ( (c3n == u3r_mean(cor, u3x_sam_2, &tel,
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u3x_sam_3, &ref,
u3x_con, &van,
0)) ||
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(c3n == u3ud(tel)) || (tel > 1) ||
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(u3_none == (sut = u3r_at(u3x_sam, van))) )
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{
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return u3m_bail(c3__fail);
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} else {
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return _cqfu_nest(van, sut, tel, ref);
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}
}
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u3_noun
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u3qfu_nest(u3_noun van,
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u3_noun sut,
u3_noun tel,
u3_noun ref)
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{
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return _cqfu_nest(van, sut, tel, ref);
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}