shrub/jets/f/ut_find.c
2015-11-28 13:08:52 -08:00

370 lines
11 KiB
C

/* j/6/find.c
**
*/
#include "all.h"
static u3_noun
_fino_in(u3_noun van,
u3_noun sut,
u3_noun dep,
u3_noun way,
u3_noun cug,
u3_noun gil)
{
u3_noun p_sut, q_sut;
if ( c3y == u3ud(sut) ) {
return u3nc(u3k(dep), u3_nul);
}
else switch ( u3h(sut) ) {
default: return u3nc(u3k(dep), u3_nul);
case c3__bull: {
if ( (c3n == u3r_trel(sut, 0, &p_sut, &q_sut)) ) {
return u3m_bail(c3__fail);
}
else {
if ( (c3n == u3du(cug)) ||
(c3n == u3r_sing(u3t(cug), u3h(p_sut))) ) {
return _fino_in(van, q_sut, dep, way, cug, gil);
}
else {
if ( 0 == dep ) {
return u3nc(0,
u3nt(u3_nul,
1,
u3nt(2, u3k(p_sut),
u3k(q_sut))));
} else {
return _fino_in(van, q_sut, u3qa_dec(dep), way, cug, gil);
}
}
}
}
case c3__cell: {
if ( (c3n == u3r_trel(sut, 0, &p_sut, &q_sut)) ) {
return u3m_bail(c3__fail);
} else {
u3_noun taf = _fino_in(van, p_sut, dep, way, cug, gil);
u3_noun p_taf = u3h(taf);
u3_noun q_taf = u3t(taf);
u3_noun ret;
if ( u3_nul == q_taf ) {
u3_noun bov = _fino_in(van, q_sut, p_taf, way, cug, gil);
u3_noun p_bov = u3h(bov);
u3_noun q_bov = u3t(bov);
if ( u3_nul == q_bov ) {
ret = u3k(bov);
}
else {
u3_noun puq_bov, quq_bov;
u3r_mean(q_bov, 6, &puq_bov, 7, &quq_bov, 0);
ret = u3nq(u3k(p_bov),
u3_nul,
u3qc_peg(3, puq_bov),
u3k(quq_bov));
}
u3z(bov);
}
else {
u3_noun puq_taf, quq_taf;
u3r_mean(q_taf, 6, &puq_taf, 7, &quq_taf, 0);
ret = u3nq(u3k(p_taf),
u3_nul,
u3qc_peg(2, puq_taf),
u3k(quq_taf));
}
u3z(taf);
return ret;
}
}
case c3__core: {
u3_noun pq_sut, qq_sut, rq_sut;
u3_noun prq_sut, qrq_sut;
if ( (c3n == u3r_trel(sut, 0, &p_sut, &q_sut)) ||
(c3n == u3r_trel(q_sut, &pq_sut, &qq_sut, &rq_sut)) ||
(c3n == u3r_cell(rq_sut, &prq_sut, &qrq_sut)) )
{
return u3m_bail(c3__fail);
} else {
u3_noun zem = (c3n == u3du(cug))
? u3_nul
: u3qf_look(u3t(cug), qrq_sut);
if ( (u3_nul != zem) && (0 != dep) ) {
u3_noun ped;
ped = u3qa_dec(dep);
u3z(dep); dep = ped;
u3z(zem);
zem = u3_nul;
}
if ( u3_nul == zem ) {
u3_noun taf = _fino_in(van, p_sut, dep, way, cug, gil);
u3_noun p_taf = u3h(taf);
u3_noun q_taf = u3t(taf);
if ( u3_nul == q_taf ) {
u3z(taf);
return u3nc(u3k(dep), u3_nul);
}
else {
u3_noun puq_taf, quq_taf;
u3_noun pro;
u3r_mean(q_taf, 6, &puq_taf, 7, &quq_taf, 0);
if ( c3n == u3qfu_park(van, sut, way, puq_taf) )
{
u3_noun weh = u3qfu_shep(van, "way", 'a', u3k(way));
u3_noun waz = u3qfu_shep(van, "axis", 'd', u3k(puq_taf));
u3t_push(u3nc(c3__mean, weh));
u3t_push(u3nc(c3__mean, waz));
return u3m_error("find-park");
}
else {
pro = u3nq(u3k(p_taf),
u3_nul,
u3qc_peg(3, puq_taf),
u3k(quq_taf));
u3z(taf);
return pro;
}
}
}
else {
u3_noun u_zem = u3t(zem);
u3_noun pu_zem = u3h(u_zem);
u3_noun qu_zem = u3t(u_zem);
u3_noun mut;
u3_noun pro;
mut = u3nt(c3__core,
u3k(p_sut),
u3nt(c3__gold,
u3k(qq_sut),
u3k(rq_sut)));
pro = u3nc(0,
u3nq(u3_nul,
1,
1,
u3nc(u3qc_peg(2, pu_zem),
u3nc(u3nc(mut, u3k(qu_zem)),
u3_nul))));
u3z(zem);
return pro;
}
}
}
case c3__face: {
if ( (c3n == u3r_trel(sut, 0, &p_sut, &q_sut)) ) {
return u3m_bail(c3__fail);
} else {
if ( (c3n == u3du(cug)) || (c3n == u3r_sing(u3t(cug), p_sut)) ) {
return u3nc(u3k(dep), u3_nul);
} else {
if ( 0 == dep ) {
return u3nc(0, u3nq(u3_nul, 1, 0, u3k(q_sut)));
} else {
return u3nc
(u3qa_dec(dep), u3_nul);
}
}
}
}
case c3__cube: {
u3_noun fop = u3qfu_repo(van, sut);
u3_noun pro = _fino_in(van, fop, dep, way, cug, gil);
u3z(fop);
return pro;
}
case c3__fork: {
if ( (c3n == u3r_trel(sut, 0, &p_sut, &q_sut)) ) {
return u3m_bail(c3__fail);
}
if ( (c3y == u3qdi_has(gil, q_sut)) ) {
return _fino_in(van, p_sut, dep, way, cug, gil);
}
else if ( (c3y == u3qdi_has(gil, p_sut)) ) {
return _fino_in(van, q_sut, dep, way, cug, gil);
}
else {
u3_noun hax = _fino_in(van, p_sut, dep, way, cug, gil);
u3_noun yor = _fino_in(van, q_sut, dep, way, cug, gil);
u3_noun p_hax = u3h(hax);
u3_noun p_yor = u3h(yor);
u3_noun q_hax = u3t(hax);
u3_noun q_yor = u3t(yor);
u3_noun puq_hax, quq_hax;
u3_noun puq_yor, quq_yor;
u3_noun ret = 0;
if ( u3_nul != q_hax ) {
u3r_mean(q_hax, 6, &puq_hax, 7, &quq_hax, 0);
}
if ( u3_nul != q_yor ) {
u3r_mean(q_yor, 6, &puq_yor, 7, &quq_yor, 0);
}
if ( c3y == u3r_sing(hax, yor) ) {
ret = u3k(hax);
}
else {
if ( (c3n == u3r_sing(p_hax, p_yor)) ||
((u3_nul == q_hax) || (u3_nul == q_yor)) ||
(c3n == u3r_sing(puq_hax, puq_yor)) ||
(c3n == u3r_sing(u3h(quq_hax), u3h(quq_yor))) )
{
return u3m_error("find-fork");
}
switch ( u3h(quq_hax) ) {
case 0: {
u3_noun pquq_hax = u3t(quq_hax);
u3_noun pquq_yor = u3t(quq_yor);
ret = u3nc(u3k(p_hax),
u3nq(u3_nul,
u3k(puq_hax),
0,
u3qf_fork(pquq_hax, pquq_yor)));
break;
}
case 1: {
u3_noun pquq_hax, qquq_hax, pquq_yor, qquq_yor;
u3x_cell(u3t(quq_hax), &pquq_hax, &qquq_hax);
u3x_cell(u3t(quq_yor), &pquq_yor, &qquq_yor);
if ( c3n == u3r_sing(pquq_hax, pquq_yor) ) {
return u3m_error("find-fork");
} else {
ret = u3nc(u3k(p_hax),
u3nq(u3_nul,
u3k(puq_hax),
1,
u3nc(u3k(pquq_hax),
u3qb_weld(qquq_hax, qquq_yor))));
break;
}
}
case 2: {
u3_noun pquq_hax, qquq_hax, pquq_yor, qquq_yor;
u3_noun ppquq_hax, qpquq_hax, rpquq_hax, spquq_hax;
u3_noun ppquq_yor, qpquq_yor, rpquq_yor, spquq_yor;
u3x_cell(u3t(quq_hax), &pquq_hax, &qquq_hax);
u3x_cell(u3t(quq_yor), &pquq_yor, &qquq_yor);
u3x_qual(pquq_hax,
&ppquq_hax, &qpquq_hax, &rpquq_hax, &spquq_hax);
u3x_qual(pquq_yor,
&ppquq_yor, &qpquq_yor, &rpquq_yor, &spquq_yor);
if ( (c3n == u3r_sing(ppquq_hax, ppquq_yor)) ||
(c3n == u3r_sing(qpquq_hax, qpquq_yor)) ||
(c3n == u3r_sing(rpquq_hax, rpquq_yor)) )
{
return u3m_error("find-fork");
}
else {
ret = u3nc(u3k(p_hax),
u3nq(u3_nul,
u3k(puq_hax),
2,
u3nc(u3nq(u3k(ppquq_hax),
u3k(qpquq_hax),
u3k(rpquq_hax),
u3qf_fork(spquq_hax,
spquq_yor)),
u3qf_fork(qquq_hax, qquq_yor))));
break;
}
}
}
}
u3z(yor);
u3z(hax);
return ret;
}
}
case c3__hold: p_sut = u3t(sut);
{
if ( (c3y == u3qdi_has(gil, sut)) ) {
return u3nc(u3k(dep), u3_nul);
}
else {
u3_noun zoc = u3qdi_put(gil, sut);
u3_noun fop = u3qfu_repo(van, sut);
u3_noun pro = _fino_in(van, fop, dep, way, cug, zoc);
u3z(fop);
u3z(zoc);
return pro;
}
}
}
}
u3_noun
_cqfu_fino(u3_noun van,
u3_noun sut,
u3_noun dep,
u3_noun way,
u3_noun cug)
{
return _fino_in(van, sut, dep, way, cug, u3_nul);
}
/* boilerplate
*/
u3_noun
u3wfu_fino(u3_noun cor)
{
u3_noun sut, dep, way, cug, van;
if ( (c3n == u3r_mean(cor, u3x_sam_2, &dep,
u3x_sam_6, &way,
u3x_sam_7, &cug,
u3x_con, &van,
0)) ||
(u3_none == (sut = u3r_at(u3x_sam, van))) )
{
return u3m_bail(c3__fail);
} else {
return _cqfu_fino(van, sut, dep, way, cug);
}
}
u3_noun
u3qfu_fino(u3_noun van,
u3_noun sut,
u3_noun dep,
u3_noun way,
u3_noun cug)
{
c3_m fun_m = c3__fino;
u3_noun pro = u3z_find_4(fun_m, sut, dep, way, cug);
if ( u3_none != pro ) {
return pro;
}
else {
pro = _cqfu_fino(van, sut, dep, way, cug);
return u3z_save_4(fun_m, sut, dep, way, cug, pro);
}
}