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urbit/jets/f/ut_nest.c
2016-01-10 21:08:03 -08:00

545 lines
14 KiB
C

/* j/6/ut_nest.c
**
*/
#include "all.h"
#define FROG
/* logic
*/
/* forward
*/
static u3_noun
_nest_sint(u3_noun, u3_noun, u3_noun, u3_noun, u3_noun, u3_noun, u3_noun);
static u3_noun
_nest_dext(u3_noun, u3_noun, u3_noun, u3_noun, u3_noun, u3_noun, u3_noun);
static u3_noun
_nest_clip(u3_noun van,
u3_noun sut,
u3_noun tel,
u3_noun ref,
u3_noun dab,
u3_noun hem,
u3_noun gil)
{
if ( u3_nul == dab ) {
return u3r_sing(u3_nul, hem);
} else if ( u3_nul == hem ) {
return c3n;
} else {
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;
u3x_trel(dab, &n_dab, &l_dab, &r_dab);
u3x_trel(hem, &n_hem, &l_hem, &r_hem);
if ( (c3n == _nest_clip(van, sut, tel, ref, l_dab, l_hem, gil)) ||
(c3n == _nest_clip(van, sut, tel, ref, r_dab, r_hem, gil)) )
{
return c3n;
}
u3x_cell(n_dab, &pn_dab, &qn_dab);
u3x_cell(n_hem, &pn_hem, &qn_hem);
if ( c3n == u3r_sing(pn_dab, pn_hem) ) {
return c3n;
} else {
if ( (c3n == u3du(qn_dab)) || (c3n == u3du(qn_hem)) ) {
return u3m_bail(c3__fail);
}
else switch ( u3h(qn_dab) ) {
default: return u3m_bail(c3__exit);
case c3__ash: {
if ( c3__ash != u3h(qn_hem) ) {
return c3n;
} else {
u3_noun pqn_dab = u3t(qn_dab);
u3_noun pqn_hem = u3t(qn_hem);
u3_noun vis = u3qfu_play(van, sut, pqn_dab);
u3_noun lon = u3qfu_play(van, ref, pqn_hem);
u3_noun ret = _nest_dext(van, vis, tel, lon, u3_nul, u3_nul, gil);
u3z(vis);
u3z(lon);
return ret;
}
}
case c3__elm: {
return u3r_sing(qn_dab, qn_hem);
}
}
}
}
}
static u3_noun
_nest_cong(u3_noun van,
u3_noun sut,
u3_noun tel,
u3_noun ref,
u3_noun gil)
{
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;
u3_noun ret;
u3x_trel(sut, 0, &p_sut, &q_sut);
u3x_trel(ref, 0, &p_ref, &q_ref);
u3x_trel(q_sut, &pq_sut, &qq_sut, &rq_sut);
u3x_trel(q_ref, &pq_ref, &qq_ref, &rq_ref);
u3x_cell(rq_sut, &prq_sut, &qrq_sut);
u3x_cell(rq_ref, &prq_ref, &qrq_ref);
if ( c3y == u3r_sing(q_sut, q_ref) ) {
return _nest_dext(van, p_sut, tel, p_ref, u3_nul, u3_nul, gil);
}
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)) )
{
return c3n;
}
else {
if ( (pq_sut != pq_ref) &&
(c3__lead != pq_sut) &&
(c3__gold != pq_ref) )
{
return c3n;
}
else {
u3_noun hud = u3nc(u3k(sut), u3k(ref));
if ( (c3y == u3qdi_has(gil, hud)) ) {
u3z(hud);
return c3y;
}
else {
u3_noun zoc = u3qdi_put(gil, hud);
u3_noun tus = u3nt(c3__core,
u3k(qq_sut),
u3nc(c3__gold,
u3k(u3t(q_sut))));
u3_noun fer = u3nt(c3__core,
u3k(qq_ref),
u3nc(c3__gold,
u3k(u3t(q_ref))));
ret = _nest_clip(van, tus, tel, fer, qrq_sut, qrq_ref, zoc);
u3z(fer);
u3z(tus);
u3z(zoc);
u3z(hud);
if ( c3n == ret ) {
return c3n;
}
else {
switch ( pq_sut ) {
default: return u3m_bail(c3__fail);
case c3__gold: {
return
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));
}
case c3__iron: {
u3_noun s_sam = u3qfu_peek(van, qq_sut, c3__rite, 2);
u3_noun r_sam = u3qfu_peek(van, qq_ref, c3__rite, 2);
u3_noun ret = _nest_dext
(van, r_sam, tel, s_sam, u3_nul, u3_nul, gil);
u3z(r_sam);
u3z(s_sam);
return ret;
}
case c3__lead: {
return c3y;
}
case c3__zinc: {
u3_noun s_pal = u3qfu_peek(van, qq_sut, c3__read, 2);
u3_noun r_pal = u3qfu_peek(van, qq_ref, c3__read, 2);
u3_noun ret = _nest_dext
(van, s_pal, tel, r_pal, u3_nul, u3_nul, gil);
u3z(r_pal);
u3z(s_pal);
return ret;
}
}
}
}
}
}
}
static u3_noun
_nest_dext_in(u3_noun van,
u3_noun sut,
u3_noun tel,
u3_noun ref,
u3_noun seg,
u3_noun reg,
u3_noun gil)
{
u3_noun p_sut, q_sut, p_ref, q_ref;
if ( (c3n == u3du(sut)) ) switch ( sut ) {
default: return u3m_bail(c3__fail);
case c3__noun: {
return c3y;
}
case c3__void: {
return _nest_sint(van, sut, tel, ref, seg, reg, gil);
}
}
else switch ( u3h(sut) ) {
default: return u3m_bail(c3__fail);
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) ) {
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;
}
return _nest_sint(van, sut, tel, ref, seg, reg, gil);
}
}
case c3__cell: {
if ( (c3n == u3r_trel(sut, 0, &p_sut, &q_sut)) ) {
return u3m_bail(c3__fail);
} else {
if ( c3y == u3r_pq(ref, c3__cell, &p_ref, &q_ref) ) {
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));
}
else return _nest_sint(van, sut, tel, ref, seg, reg, gil);
}
}
case c3__core: {
if ( c3n == u3r_trel(sut, 0, &p_sut, &q_sut) ) {
return u3m_bail(c3__fail);
} else {
if ( (c3y == u3r_pq(ref, c3__core, &p_ref, &q_ref)) ) {
return _nest_cong(van, sut, tel, ref, gil);
}
else return _nest_sint(van, sut, tel, ref, seg, reg, gil);
}
}
case c3__face: {
if ( (c3n == u3r_trel(sut, 0, &p_sut, &q_sut)) ) {
return u3m_bail(c3__fail);
} else {
return _nest_dext(van, q_sut, tel, ref, seg, reg, gil);
}
}
case c3__fork: {
if ( (c3n == u3r_trel(sut, 0, &p_sut, &q_sut)) ) {
return u3m_bail(c3__fail);
}
else {
if ( c3n == u3du(ref) ) switch ( ref ) {
default: return _nest_sint(van, sut, tel, ref, seg, reg, gil);
case c3__noun:
break;
}
else switch ( u3h(ref) ) {
default: return _nest_sint(van, sut, tel, ref, seg, reg, gil);
case c3__atom:
case c3__cell:
case c3__core:
break;
}
return c3o(_nest_dext(van, p_sut, c3n, ref, seg, reg, gil),
_nest_dext(van, q_sut, c3n, ref, seg, reg, gil));
}
}
#ifdef FROG
case c3__frog: p_sut = u3t(sut);
{
if ( c3n == u3du(ref) ) switch ( ref ) {
default: return _nest_sint(van, sut, tel, ref, seg, reg, gil);
case c3__noun:
break;
}
else switch ( u3h(ref) ) {
default: return _nest_sint(van, sut, tel, ref, seg, reg, gil);
case c3__atom:
case c3__cell:
case c3__core:
break;
}
while ( u3_nul != p_sut ) {
if ( c3y == _nest_dext(van, u3h(p_sut), c3n, ref, seg, reg, gil) ) {
return c3y;
} else {
p_sut = u3t(p_sut);
}
}
return c3n;
}
#else
case c3__frog: p_sut = u3t(sut);
{
u3_noun fag = u3qf_grof(p_sut);
u3_noun ret = _nest_dext(van, fag, tel, ref, seg, reg, gil);
u3z(fag);
return ret;
}
#endif
case c3__hold: p_sut = u3t(sut);
{
if ( c3y == u3qdi_has(seg, sut) ) {
return c3n;
}
else {
u3_noun hud = u3nc(u3k(sut), u3k(ref));
if ( (c3y == u3qdi_has(gil, hud)) ) {
u3z(hud);
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);
u3z(hud);
u3z(fop);
u3z(zoc);
u3z(gus);
return hiv;
}
}
}
}
}
static u3_noun
_nest_dext_to(u3_noun van,
u3_noun sut,
u3_noun tel,
u3_noun ref,
u3_noun seg,
u3_noun reg,
u3_noun gil)
{
u3_noun tyn = _nest_dext_in(van, sut, tel, ref, seg, reg, gil);
if ( (c3y == tyn) || (c3n == tel) ) {
return tyn;
} else {
#ifdef FROG
u3_noun dun = u3qfu_dunq(van, "need", sut);
u3_noun niz = u3qfu_dunq(van, "have", ref);
u3t_push(u3nc(c3__mean, dun));
u3t_push(u3nc(c3__mean, niz));
#endif
return u3m_error("nest-fail");
}
}
static u3_noun
_nest_dext(u3_noun van,
u3_noun sut,
u3_noun tel,
u3_noun ref,
u3_noun seg,
u3_noun reg,
u3_noun gil)
{
if ( (c3y == u3r_sing(sut, ref)) ) {
return c3y;
}
{
c3_m fun_m = c3__nest + !!u3r_at(u3qfu_van_vet, van);
u3_noun pro = u3z_find_2(fun_m, sut, ref);
if ( u3_none != pro ) {
return pro;
}
else {
pro = _nest_dext_to(van, sut, tel, ref, seg, reg, gil);
return u3z_save_2(fun_m, sut, ref, pro);
}
}
}
static u3_noun
_nest_sint(u3_noun van,
u3_noun sut,
u3_noun tel,
u3_noun ref,
u3_noun seg,
u3_noun reg,
u3_noun gil)
{
u3_noun p_ref, q_ref;
if ( (c3n == u3du(ref)) ) {
switch ( ref ) {
default: return u3m_bail(c3__fail);
case c3__noun: return c3n;
case c3__void: return c3y;
}
}
else {
switch ( u3h(ref) ) {
default: {
return u3m_bail(c3__fail);
}
case c3__atom: return c3n;
case c3__cell: return c3n;
case c3__core: {
u3_noun gam = u3qfu_repo(van, ref);
u3_noun hiv = _nest_dext(van, sut, tel, gam, seg, reg, gil);
u3z(gam);
return hiv;
}
case c3__face: {
if ( c3n == u3r_trel(ref, 0, &p_ref, &q_ref) ) {
return u3m_bail(c3__fail);
} else {
return _nest_dext(van, sut, tel, q_ref, seg, reg, gil);
}
}
case c3__fork: {
if ( (c3y == u3r_mean(ref, 6, &p_ref, 7, &q_ref, 0)) ) {
return c3a(_nest_dext(van, sut, tel, p_ref, seg, reg, gil),
_nest_dext(van, sut, tel, q_ref, seg, reg, gil));
}
else return u3m_bail(c3__fail);
}
#ifdef FROG
case c3__frog: {
p_ref = u3t(ref);
while ( u3_nul != p_ref ) {
if ( c3n == _nest_dext(van, sut, c3n, u3h(p_ref), seg, reg, gil) ) {
return c3n;
} else {
p_ref = u3t(p_ref);
}
}
return c3y;
}
#else
case c3__frog: p_ref = u3t(ref);
{
u3_noun fag = u3qf_grof(p_ref);
u3_noun ret = _nest_dext(van, sut, tel, fag, seg, reg, gil);
u3z(fag);
return ret;
}
#endif
case c3__hold: {
if ( c3y == u3qdi_has(reg, ref) ) {
return c3y;
}
{
u3_noun hud = u3nc(u3k(sut), u3k(ref));
if ( (c3y == u3qdi_has(gil, hud)) ) {
u3z(hud);
return c3y;
} else {
u3_noun gur = u3qdi_put(reg, ref);
u3_noun zoc = u3qdi_put(gil, hud);
u3_noun gam = u3qfu_repo(van, ref);
{
u3_noun hiv = _nest_dext(van, sut, tel, gam, seg, gur, zoc);
u3z(hud);
u3z(gam);
u3z(zoc);
u3z(gur);
return hiv;
}
}
}
}
}
}
}
u3_noun
_cqfu_nest(u3_noun van,
u3_noun sut,
u3_noun tel,
u3_noun ref)
{
return _nest_dext(van, sut, tel, ref, u3_nul, u3_nul, u3_nul);
}
/* boilerplate
*/
u3_noun
u3wfu_nest(u3_noun cor)
{
u3_noun sut, tel, ref, van;
if ( (c3n == u3r_mean(cor, u3x_sam_2, &tel,
u3x_sam_3, &ref,
u3x_con, &van,
0)) ||
(c3n == u3ud(tel)) || (tel > 1) ||
(u3_none == (sut = u3r_at(u3x_sam, van))) )
{
return u3m_bail(c3__fail);
} else {
return _cqfu_nest(van, sut, tel, ref);
}
}
u3_noun
u3qfu_nest(u3_noun van,
u3_noun sut,
u3_noun tel,
u3_noun ref)
{
return _cqfu_nest(van, sut, tel, ref);
}