urbit/j/6/ut_fish.c
2014-11-05 15:36:30 -08:00

170 lines
3.9 KiB
C

/* j/6/fish.c
**
** This file is in the public domain.
*/
#include "all.h"
/* functions
*/
static u3_noun
_fish_in(
u3_noun van,
u3_noun sut,
u3_atom axe,
u3_noun vit)
{
u3_noun p_sut, q_sut;
if ( c3y == u3ud(sut) ) switch ( sut ) {
default: return u3_cm_bail(c3__fail);
case c3__noun: {
return u3nc(1, 0);
}
case c3__void: {
return u3nc(1, 1);
}
}
else switch ( u3h(sut) ) {
default: return u3_cm_bail(c3__fail);
case c3__atom: {
u3_noun ton = u3nt(3, 0, u3k(axe));
u3_noun pro = u3_cqf_flip(ton);
u3z(ton);
return pro;
}
case c3__bull: {
return u3_cm_error("bull-fish");
}
case c3__cell: {
if ( (c3n == u3_cr_trel(sut, 0, &p_sut, &q_sut)) ) {
return u3_cm_bail(c3__fail);
} else {
u3_noun hut = u3nt(3, 0, u3k(axe));
u3_noun lef = u3_cqc_peg(axe, 2);
u3_noun rit = u3_cqc_peg(axe, 3);
u3_noun hed = _fish_in(van, p_sut, lef, vit);
u3_noun tal = _fish_in(van, q_sut, rit, vit);
u3_noun hob = u3_cqf_flan(hed, tal);
u3_noun vug = u3_cqf_flan(hut, hob);
u3z(hob);
u3z(tal);
u3z(hed);
u3z(rit);
u3z(lef);
u3z(hut);
return vug;
}
}
case c3__core: {
return u3nc(0, 0);
}
case c3__cube: {
if ( (c3n == u3_cr_trel(sut, 0, &p_sut, &q_sut)) ) {
return u3_cm_bail(c3__fail);
} else {
return u3nt
(5,
u3nc(1, u3k(p_sut)),
u3nc(0, u3k(axe)));
}
}
case c3__face: {
if ( (c3n == u3_cr_trel(sut, 0, &p_sut, &q_sut)) ) {
return u3_cm_bail(c3__fail);
} else {
return _fish_in(van, q_sut, axe, vit);
}
}
case c3__fork: {
if ( (c3n == u3_cr_trel(sut, 0, &p_sut, &q_sut)) ) {
return u3_cm_bail(c3__fail);
}
else {
u3_noun hed = _fish_in(van, p_sut, axe, vit);
u3_noun tal = _fish_in(van, q_sut, axe, vit);
u3_noun pro = u3_cqf_flor(hed, tal);
u3z(hed);
u3z(tal);
return pro;
}
}
case c3__hold: {
p_sut = u3t(sut);
{
if ( (c3y == u3_cqdi_has(vit, sut)) ) {
// u3_noun dun = u3_cqfu_dunq(van, "type", sut);
u3_noun niz = u3_cqfu_shep
(van, "axis", 'd', u3k(axe));
// u3_ct_push(u3nc(c3__mean, dun));
u3_ct_push(u3nc(c3__mean, niz));
return u3_cm_error("fish-loop");
} else {
u3_noun zoc = u3_cqdi_put(vit, sut);
u3_noun fop = u3_cqfu_rest(van, sut, p_sut);
u3_noun pro = _fish_in(van, fop, axe, zoc);
u3z(fop);
u3z(zoc);
return pro;
}
}
}
}
}
u3_noun
_cqfu_fish(
u3_noun van,
u3_noun sut,
u3_atom axe)
{
return _fish_in(van, sut, axe, u3_nul);
}
/* boilerplate
*/
u3_noun
u3_cwfu_fish(
u3_noun cor)
{
u3_noun sut, axe, van;
if ( (c3n == u3_cr_mean(cor, u3_cv_sam, &axe, u3_cv_con, &van, 0)) ||
(c3n == u3ud(axe)) ||
(u3_none == (sut = u3_cr_at(u3_cv_sam, van))) )
{
return u3_cm_bail(c3__fail);
} else {
return _cqfu_fish(van, sut, axe);
}
}
u3_noun
u3_cqfu_fish(u3_noun van,
u3_noun sut,
u3_noun axe)
{
c3_m fun_m = c3__fish;
u3_noun pro = u3_cz_find_2(fun_m, sut, axe);
if ( u3_none != pro ) {
return pro;
}
else {
pro = _cqfu_fish(van, sut, axe);
return u3_cz_save_2(fun_m, sut, axe, pro);
}
}