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decapitate fuse:ut

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pilfer-pandex 2019-05-17 15:03:35 -07:00
parent 61b957cc5b
commit ffa0d9108c
1 changed files with 8 additions and 171 deletions
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179
pkg/urbit/jets/f/ut_fuse.c
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@ -3,181 +3,18 @@
*/
#include "all.h"
/* logic
*/
static u3_noun
_fuse_in(u3_noun, u3_noun, u3_noun, u3_noun);
static u3_noun
_fuse_repo(u3_noun van,
u3_noun sut,
u3_noun ref,
u3_noun bix)
{
u3_noun rep = u3qfu_repo(van, sut);
u3_noun ret = _fuse_in(van, rep, ref, bix);
if ( c3y == u3r_sing(ret, rep) ) {
if ( c3__void == rep ) {
return c3__void;
} else {
u3z(rep);
u3z(ret);
return u3k(sut);
}
} else {
u3z(rep);
return ret;
}
}
static u3_noun
_fuse_in_fork(u3_noun van, u3_noun p_sut, u3_noun ref, u3_noun bix)
{
if ( u3_nul == p_sut ) {
return u3_nul;
}
else {
return u3nc(_fuse_in(van, u3h(p_sut), ref, bix),
_fuse_in_fork(van, u3t(p_sut), ref, bix));
}
}
static u3_noun
_fuse_in(u3_noun van,
u3_noun sut,
u3_noun ref,
u3_noun bix)
{
u3_noun p_sut, q_sut;
if ( c3y == u3r_sing(sut, ref) || (c3__noun == ref) ) {
return u3k(sut);
}
if ( c3n == u3du(sut) ) switch ( sut ) {
default: return u3m_bail(c3__fail);
case c3__noun:
{
return u3k(ref);
}
case c3__void:
{
return c3__void;
}
}
else switch ( u3h(sut) ) {
default: return u3m_bail(c3__fail);
case c3__atom: u3x_cell(u3t(sut), &p_sut, &q_sut);
{
if ( c3y == u3du(ref) ) {
if ( c3__atom == u3h(ref) ) {
u3_noun p_ref, q_ref;
u3x_cell(u3t(ref), &p_ref, &q_ref);
{
u3_noun foc = (c3y == u3qf_fitz(p_ref, p_sut))
? u3k(p_sut)
: u3k(p_ref);
if ( c3y == u3du(q_sut) ) {
if ( c3y == u3du(q_ref) ) {
if ( c3y == u3r_sing(q_ref, q_sut) ) {
return u3nt(c3__atom, foc, u3k(q_sut));
}
else {
u3z(foc);
return c3__void;
}
}
else {
return u3nt(c3__atom, foc, u3k(q_sut));
}
} else {
return u3nt(c3__atom, foc, u3k(q_ref));
}
}
}
else if ( c3__cell == u3h(ref) ) {
return c3__void;
}
}
return _fuse_in(van, ref, sut, bix);
}
case c3__cell: u3x_cell(u3t(sut), &p_sut, &q_sut);
{
u3_noun p_ref, q_ref;
if ( c3y == u3r_pq(ref, c3__cell, &p_ref, &q_ref) ) {
u3_noun hed = _fuse_in(van, p_sut, p_ref, bix);
u3_noun tal = _fuse_in(van, q_sut, q_ref, bix);
u3_noun ret = u3qf_cell(hed, tal);
u3z(hed);
u3z(tal);
return ret;
}
else return _fuse_in(van, ref, sut, bix);
}
case c3__core:
{
return _fuse_repo(van, sut, ref, bix);
}
case c3__hint: u3x_cell(u3t(sut), &p_sut, &q_sut);
{
u3_noun vot = _fuse_in(van, q_sut, ref, bix);
u3_noun ret = u3qf_hint(p_sut, vot);
u3z(vot);
return ret;
}
case c3__face: u3x_cell(u3t(sut), &p_sut, &q_sut);
{
u3_noun vot = _fuse_in(van, q_sut, ref, bix);
u3_noun ret = u3qf_face(p_sut, vot);
u3z(vot);
return ret;
}
case c3__fork: p_sut = u3t(sut);
{
u3_noun yed = u3qdi_tap(p_sut);
u3_noun ret = u3kf_fork(_fuse_in_fork(van, yed, ref, bix));
u3z(yed);
return ret;
}
case c3__hold:
{
u3_noun hud = u3nc(u3k(sut), u3k(ref));
if ( c3y == u3qdi_has(bix, hud) ) {
// u3_noun dun = u3qfu_dunq(van, "type", sut);
// u3_noun niz = u3qfu_dunq(van, "over", ref);
// u3t_push(u3nc(c3__mean, dun));
// u3t_push(u3nc(c3__mean, niz));
return u3m_error("fuse-loop");
} else {
u3_noun bux = u3qdi_put(bix, hud);
u3_noun ret = _fuse_repo(van, sut, ref, bux);
u3z(hud);
u3z(bux);
return ret;
}
}
}
}
static u3_noun
_cqfu_fuse(u3_noun van,
u3_noun sut,
u3_noun ref)
{
return _fuse_in(van, sut, ref, u3_nul);
u3_noun von = u3i_molt(u3k(van), u3x_sam, u3k(sut), 0);
u3_noun gat = u3j_cook("_cqfu_fuse-fuse", von, "fuse");
gat = u3i_molt(gat, u3x_sam, u3k(ref), 0);
return u3n_nock_on(gat, u3k(u3x_at(u3x_bat, gat)));
}
/* boilerplate
@ -192,7 +29,7 @@
{
return u3m_bail(c3__fail);
} else {
return _cqfu_fuse(van, sut, ref);
return u3qfu_fuse(van, sut, ref);
}
}