mirror of
https://github.com/ilyakooo0/urbit.git
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2f8d0d6d34
There is a variance bug such that the following cast is allowed to go through: ``` > =a 12 > =core1 ^? |=(b=@ a) > =a "hello" > =core2 ^? |=(b=@ a) > ^+(core1 core2) ``` This should not be! The code in `hoon.hoon` is correct -- it turns out that the jet is wrong however. It falsely returns "yes" for a nest in which two cores have identical code. Obviously that's not enough to guarantee sameness of type. So I've removed the offending lines.
561 lines
14 KiB
C
561 lines
14 KiB
C
/* j/6/ut_nest.c
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**
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*/
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#include "all.h"
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/* logic
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*/
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/* forward
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*/
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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_deep(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 dab,
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u3_noun hem,
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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;
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u3_noun n_hem, l_hem, r_hem;
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u3_noun pn_hem, qn_hem, pn_dab, qn_dab;
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u3x_trel(dab, &n_dab, &l_dab, &r_dab);
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u3x_trel(hem, &n_hem, &l_hem, &r_hem);
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if ( (c3n == _nest_deep(van, sut, tel, ref, l_dab, l_hem, gil)) ||
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(c3n == _nest_deep(van, sut, tel, ref, r_dab, r_hem, gil)) )
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{
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return c3n;
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}
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u3x_cell(n_dab, &pn_dab, &qn_dab);
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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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}
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else {
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u3_noun vis = u3qfu_play(van, sut, qn_dab);
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u3_noun lon = u3qfu_play(van, ref, qn_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);
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u3z(lon);
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return ret;
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}
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}
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}
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static u3_noun
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_nest_dope(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 dom,
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u3_noun vim,
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u3_noun gil)
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{
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if ( u3_nul == dom ) {
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return u3r_sing(u3_nul, vim);
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} else if ( u3_nul == vim ) {
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return c3n;
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} else {
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u3_noun n_dom, l_dom, r_dom;
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u3_noun n_vim, l_vim, r_vim;
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u3_noun pn_vim, qn_vim, pn_dom, qn_dom;
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u3_noun pqn_vim, qqn_vim, pqn_dom, qqn_dom;
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u3x_trel(dom, &n_dom, &l_dom, &r_dom);
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u3x_trel(vim, &n_vim, &l_vim, &r_vim);
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if ( (c3n == _nest_dope(van, sut, tel, ref, l_dom, l_vim, gil)) ||
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(c3n == _nest_dope(van, sut, tel, ref, r_dom, r_vim, gil)) )
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{
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return c3n;
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}
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u3x_cell(n_dom, &pn_dom, &qn_dom);
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u3x_cell(n_vim, &pn_vim, &qn_vim);
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u3x_cell(qn_dom, &pqn_dom, &qqn_dom);
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u3x_cell(qn_vim, &pqn_vim, &qqn_vim);
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if ( c3n == u3r_sing(pn_dom, pn_vim) ) {
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return c3n;
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} else {
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return _nest_deep(van, sut, tel, ref, qqn_dom, qqn_vim, gil);
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}
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}
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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,
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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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u3_noun pq_sut, qq_sut, rq_sut;
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u3_noun pq_ref, qq_ref, rq_ref;
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u3_noun prq_sut, qrq_sut, prq_ref, qrq_ref;
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u3_noun ppq_sut, qpq_sut, rpq_sut;
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u3_noun ppq_ref, qpq_ref, rpq_ref;
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u3_noun ret;
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u3x_trel(sut, 0, &p_sut, &q_sut);
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u3x_trel(ref, 0, &p_ref, &q_ref);
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u3x_trel(q_sut, &pq_sut, &qq_sut, &rq_sut);
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u3x_trel(q_ref, &pq_ref, &qq_ref, &rq_ref);
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u3x_trel(pq_sut, &ppq_sut, &qpq_sut, &rpq_sut);
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u3x_trel(pq_ref, &ppq_ref, &qpq_ref, &rpq_ref);
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u3x_cell(rq_sut, &prq_sut, &qrq_sut);
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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 == u3r_sing(qpq_sut, qpq_ref) ) {
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return c3n;
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}
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else if ( (c3n == _nest_dext
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(van, qq_sut, tel, p_sut, u3_nul, u3_nul, gil)) ||
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(c3n == _nest_dext
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(van, p_sut, tel, qq_sut, u3_nul, u3_nul, gil)) ||
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(c3n == _nest_dext
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(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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}
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else {
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if ( (rpq_sut != rpq_ref) &&
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(c3__lead != rpq_sut) &&
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(c3__gold != rpq_ref) )
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{
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return c3n;
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}
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else if ( c3__wet == qpq_sut ) {
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return u3r_sing(qrq_sut, qrq_ref);
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}
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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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}
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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,
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u3k(qq_sut),
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u3nc(u3nt(u3k(ppq_sut), u3k(qpq_sut), c3__gold),
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u3k(u3t(q_sut))));
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u3_noun fer = u3nt(c3__core,
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u3k(qq_ref),
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u3nc(u3nt(u3k(ppq_ref), u3k(qpq_ref), c3__gold),
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u3k(u3t(q_ref))));
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ret = _nest_dope(van, tus, tel, fer, qrq_sut, qrq_ref, zoc);
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u3z(fer);
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u3z(tus);
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u3z(zoc);
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u3z(hud);
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if ( c3n == ret ) {
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return c3n;
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}
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else {
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switch ( rpq_sut ) {
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default: return u3m_bail(c3__fail);
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case c3__gold: {
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return
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c3a(_nest_dext(van, qq_sut, tel, qq_ref, u3_nul, u3_nul, gil),
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_nest_dext(van, qq_ref, tel, qq_sut, u3_nul, u3_nul, gil));
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}
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case c3__iron: {
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u3_noun s_sam = u3qfu_peek(van, qq_sut, c3__rite, 2);
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u3_noun r_sam = u3qfu_peek(van, qq_ref, c3__rite, 2);
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u3_noun ret = _nest_dext
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(van, r_sam, tel, s_sam, u3_nul, u3_nul, gil);
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u3z(r_sam);
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u3z(s_sam);
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return ret;
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}
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case c3__lead: {
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return c3y;
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}
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case c3__zinc: {
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u3_noun s_pal = u3qfu_peek(van, qq_sut, c3__read, 2);
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u3_noun r_pal = u3qfu_peek(van, qq_ref, c3__read, 2);
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u3_noun ret = _nest_dext
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(van, s_pal, tel, r_pal, u3_nul, u3_nul, gil);
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u3z(r_pal);
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u3z(s_pal);
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return ret;
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}
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}
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}
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}
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}
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}
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}
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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,
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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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}
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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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}
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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: {
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if ( (c3n == u3r_trel(sut, 0, &p_sut, &q_sut)) ) {
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return u3m_bail(c3__fail);
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}
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else {
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if ( c3y == u3r_pq(ref, c3__atom, &p_ref, &q_ref) ) {
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if ( (c3n == u3qf_fitz(p_sut, p_ref)) ||
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( (c3y == u3du(q_sut)) &&
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( (c3n == u3du(q_ref)) ||
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(c3n == u3r_sing(q_sut, q_ref)))) )
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{
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return c3n;
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}
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return c3y;
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}
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return _nest_sint(van, sut, tel, ref, seg, reg, gil);
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}
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}
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case c3__cell: {
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if ( (c3n == u3r_trel(sut, 0, &p_sut, &q_sut)) ) {
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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),
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_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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}
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}
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case c3__core: {
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if ( c3n == u3r_trel(sut, 0, &p_sut, &q_sut) ) {
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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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}
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}
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case c3__hint:
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case c3__face: {
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if ( (c3n == u3r_trel(sut, 0, &p_sut, &q_sut)) ) {
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return u3m_bail(c3__fail);
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} else {
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return _nest_dext(van, q_sut, tel, ref, seg, reg, gil);
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}
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}
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case c3__fork: p_sut = u3t(sut);
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{
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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:
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break;
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}
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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:
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case c3__cell:
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case c3__core:
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break;
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}
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{
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u3_noun dey = u3qdi_tap(p_sut);
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u3_noun yed = dey;
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while ( u3_nul != yed ) {
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if ( c3y == _nest_dext(van, u3h(yed), c3n, ref, seg, reg, gil) ) {
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u3z(dey);
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return c3y;
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} else {
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yed = u3t(yed);
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}
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}
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u3z(dey);
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return c3n;
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}
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}
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case c3__hold:
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{
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if ( c3y == u3qdi_has(seg, sut) ) {
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return c3n;
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}
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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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}
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else {
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u3_noun gus = u3qdi_put(seg, sut);
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u3_noun zoc = u3qdi_put(gil, hud);
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u3_noun fop = u3qfu_repo(van, sut);
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u3_noun hiv = _nest_dext(van, fop, tel, ref, gus, reg, zoc);
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u3z(hud);
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u3z(fop);
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u3z(zoc);
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u3z(gus);
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return hiv;
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}
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}
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}
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}
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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,
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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;
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} else {
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#if 0
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u3_noun dun = u3qfu_dunq(van, "need", sut);
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u3_noun niz = u3qfu_dunq(van, "have", ref);
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u3t_push(u3nc(c3__mean, dun));
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u3t_push(u3nc(c3__mean, niz));
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#endif
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return u3m_error("nest-fail");
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}
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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,
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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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{
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c3_m fun_m = 141 + c3__nest + ((!!u3r_at(u3qfu_van_vet, van)) << 8);
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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;
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}
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else {
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pro = _nest_dext_to(van, sut, tel, ref, seg, reg, gil);
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if ( ((c3y == pro) && (u3_nul == reg)) ||
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((c3n == pro) && (u3_nul == seg)) )
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{
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return u3z_save_2(fun_m, sut, ref, pro);
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}
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else return pro;
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}
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}
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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,
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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;
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case c3__void: return c3y;
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}
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}
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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;
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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;
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}
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case c3__hint:
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case c3__face: {
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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: p_ref = u3t(ref);
|
|
{
|
|
u3_noun dey = u3qdi_tap(p_ref);
|
|
u3_noun yed = dey;
|
|
|
|
while ( u3_nul != yed ) {
|
|
if ( c3n == _nest_dext(van, sut, c3n, u3h(yed), seg, reg, gil) ) {
|
|
u3z(dey);
|
|
return c3n;
|
|
} else {
|
|
yed = u3t(yed);
|
|
}
|
|
}
|
|
u3z(dey);
|
|
return c3y;
|
|
}
|
|
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;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
static 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)
|
|
{
|
|
#if 1
|
|
c3_m fun_m = 141 + c3__nest;
|
|
u3_noun vrf = u3r_at(u3qfu_van_vrf, van);
|
|
u3_noun pro = u3z_find_4(fun_m, vrf, sut, tel, ref);
|
|
|
|
if ( u3_none != pro ) {
|
|
// u3t_heck(c3__good);
|
|
return pro;
|
|
}
|
|
else {
|
|
pro = _cqfu_nest(van, sut, tel, ref);
|
|
|
|
// u3t_heck(c3__nest);
|
|
return u3z_save_4(fun_m, vrf, sut, tel, ref, pro);
|
|
}
|
|
#else
|
|
return _cqfu_nest(van, sut, tel, ref);
|
|
#endif
|
|
}
|
|
|