mirror of
https://github.com/urbit/shrub.git
synced 2024-11-28 13:54:20 +03:00
496 lines
9.6 KiB
C
496 lines
9.6 KiB
C
/* g/n.c
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**
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*/
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#include "all.h"
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static u3_noun _n_nock_on(u3_noun bus, u3_noun fol);
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/* u3_term_io_hija(): hijack console for cooked print.
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*/
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FILE*
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u3_term_io_hija(void);
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/* u3_term_io_loja(): release console from cooked print.
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*/
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void
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u3_term_io_loja(int x);
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/* uL, uH: wrap hijack/lojack around fprintf.
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**
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** uL(fprintf(uH, ...));
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*/
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# define uH u3_term_io_hija()
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# define uL(x) u3_term_io_loja(x)
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/* _n_hint(): process hint.
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*/
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static u3_noun
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_n_hint(u3_noun zep,
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u3_noun hod,
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u3_noun bus,
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u3_noun nex)
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{
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switch ( zep ) {
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default: {
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// u3m_p("weird zep", zep);
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u3a_lose(zep);
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u3a_lose(hod);
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return _n_nock_on(bus, nex);
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}
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case c3__hunk:
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case c3__lose:
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case c3__mean:
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case c3__spot: {
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u3_noun tac = u3nc(zep, hod);
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u3_noun pro;
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u3t_push(tac);
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#if 0
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{
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static int low_i;
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if ( !low_i ) {
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low_i = 1;
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if ( 0 == (u3R->pro.nox_d % 65536ULL) ) {
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if ( c3__spot == zep ) {
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uL(fprintf(uH, "spot %d/%d : %d/%d\r\n",
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u3h(u3h(u3t(hod))),
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u3t(u3h(u3t(hod))),
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u3h(u3t(u3t(hod))),
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u3t(u3t(u3t(hod)))));
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}
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}
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low_i = 0;
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}
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}
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#endif
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pro = _n_nock_on(bus, nex);
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u3t_drop();
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return pro;
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}
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case c3__live: {
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if ( c3y == u3ud(hod) ) {
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u3t_off(noc_o);
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u3t_heck(hod);
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u3t_on(noc_o);
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} else {
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u3z(hod);
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}
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return _n_nock_on(bus, nex);
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}
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case c3__slog: {
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if ( !(u3C.wag_w & u3o_quiet) ) {
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u3t_off(noc_o);
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u3t_slog(hod);
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u3t_on(noc_o);
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}
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return _n_nock_on(bus, nex);
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}
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case c3__germ: {
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u3_noun pro = _n_nock_on(bus, nex);
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if ( c3y == u3r_sing(pro, hod) ) {
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u3z(pro); return hod;
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} else {
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u3z(hod); return pro;
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}
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}
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case c3__fast: {
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u3_noun pro = _n_nock_on(bus, nex);
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u3t_off(noc_o);
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u3j_mine(hod, u3k(pro));
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u3t_on(noc_o);
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return pro;
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}
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case c3__memo: {
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u3z(hod);
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#if 0
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return _n_nock_on(bus, nex);
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#else
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{
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u3_noun pro = u3z_find_2(c3__nock, bus, nex);
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if ( pro != u3_none ) {
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u3z(bus); u3z(nex);
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return pro;
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}
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pro = _n_nock_on(u3k(bus), u3k(nex));
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if ( &(u3H->rod_u) != u3R ) {
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u3z_save_2(c3__nock, bus, nex, pro);
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}
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u3z(bus); u3z(nex);
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return pro;
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}
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#endif
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}
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case c3__sole: {
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u3z(hod);
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{
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u3_noun pro = _n_nock_on(bus, nex);
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// return u3z_uniq(pro);
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return pro;
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}
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}
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}
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}
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/* _n_mush_in(): see _n_mush().
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*/
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static u3_noun
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_n_mush_in(u3_noun val)
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{
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if ( c3n == u3du(val) ) {
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return u3_nul;
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}
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else {
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u3_noun h_val = u3h(val);
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u3_noun ite;
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if ( c3n == u3ud(h_val) ) {
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ite = u3nc(c3__leaf, u3_nul);
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} else {
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ite = u3nc(c3__leaf, u3qe_trip(h_val));
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}
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return u3nc(ite, _n_mush_in(u3t(val)));
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}
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}
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/* _n_mush(): tank from failed path request.
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*/
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static u3_noun
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_n_mush(u3_noun val)
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{
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u3_noun pro;
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pro = u3nt(c3__rose,
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u3nt(u3nc('/', u3_nul), u3nc('/', u3_nul), u3_nul),
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_n_mush_in(val));
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u3z(val);
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return pro;
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}
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/* _n_nock_on(): produce .*(bus fol). Do not virtualize.
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*/
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static u3_noun
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_n_nock_on(u3_noun bus, u3_noun fol)
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{
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u3_noun hib, gal;
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while ( 1 ) {
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hib = u3h(fol);
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gal = u3t(fol);
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u3R->pro.nox_d += 1;
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if ( c3y == u3r_du(hib) ) {
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u3_noun poz, riv;
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poz = _n_nock_on(u3k(bus), u3k(hib));
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riv = _n_nock_on(bus, u3k(gal));
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u3a_lose(fol);
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return u3i_cell(poz, riv);
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}
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else switch ( hib ) {
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default: return u3m_bail(c3__exit);
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case 0: {
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if ( c3n == u3r_ud(gal) ) {
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return u3m_bail(c3__exit);
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}
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else {
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u3_noun pro = u3k(u3at(gal, bus));
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u3a_lose(bus); u3a_lose(fol);
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return pro;
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}
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}
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c3_assert(!"not reached");
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case 1: {
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u3_noun pro = u3k(gal);
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u3a_lose(bus); u3a_lose(fol);
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return pro;
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}
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c3_assert(!"not reached");
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case 2: {
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u3_noun nex = _n_nock_on(u3k(bus), u3k(u3t(gal)));
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u3_noun seb = _n_nock_on(bus, u3k(u3h(gal)));
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u3a_lose(fol);
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bus = seb;
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fol = nex;
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continue;
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}
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c3_assert(!"not reached");
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case 3: {
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u3_noun gof, pro;
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gof = _n_nock_on(bus, u3k(gal));
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pro = u3r_du(gof);
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u3a_lose(gof); u3a_lose(fol);
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return pro;
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}
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c3_assert(!"not reached");
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case 4: {
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u3_noun gof, pro;
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gof = _n_nock_on(bus, u3k(gal));
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pro = u3i_vint(gof);
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u3a_lose(fol);
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return pro;
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}
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c3_assert(!"not reached");
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case 5: {
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u3_noun wim = _n_nock_on(bus, u3k(gal));
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u3_noun pro = u3r_sing(u3h(wim), u3t(wim));
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u3a_lose(wim); u3a_lose(fol);
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return pro;
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}
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c3_assert(!"not reached");
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case 6: {
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u3_noun b_gal, c_gal, d_gal;
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u3x_trel(gal, &b_gal, &c_gal, &d_gal);
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{
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u3_noun tys = _n_nock_on(u3k(bus), u3k(b_gal));
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u3_noun nex;
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if ( 0 == tys ) {
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nex = u3k(c_gal);
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} else if ( 1 == tys ) {
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nex = u3k(d_gal);
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} else return u3m_bail(c3__exit);
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u3a_lose(fol);
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fol = nex;
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continue;
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}
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}
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c3_assert(!"not reached");
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case 7: {
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u3_noun b_gal, c_gal;
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u3x_cell(gal, &b_gal, &c_gal);
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{
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u3_noun bod = _n_nock_on(bus, u3k(b_gal));
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u3_noun nex = u3k(c_gal);
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u3a_lose(fol);
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bus = bod;
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fol = nex;
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continue;
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}
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}
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c3_assert(!"not reached");
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case 8: {
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u3_noun b_gal, c_gal;
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u3x_cell(gal, &b_gal, &c_gal);
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{
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u3_noun heb = _n_nock_on(u3k(bus), u3k(b_gal));
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u3_noun bod = u3nc(heb, bus);
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u3_noun nex = u3k(c_gal);
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u3a_lose(fol);
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bus = bod;
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fol = nex;
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continue;
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}
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}
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c3_assert(!"not reached");
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case 9: {
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u3_noun b_gal, c_gal;
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u3x_cell(gal, &b_gal, &c_gal);
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{
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u3_noun seb = _n_nock_on(bus, u3k(c_gal));
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u3_noun pro;
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u3t_off(noc_o);
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pro = u3j_kick(seb, b_gal);
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u3t_on(noc_o);
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if ( u3_none != pro ) {
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u3a_lose(fol);
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return pro;
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}
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else {
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if ( c3n == u3r_ud(b_gal) ) {
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return u3m_bail(c3__exit);
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}
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else {
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u3_noun nex = u3k(u3at(b_gal, seb));
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u3a_lose(fol);
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bus = seb;
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fol = nex;
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continue;
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}
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}
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}
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}
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c3_assert(!"not reached");
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case 10: {
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u3_noun p_gal, q_gal;
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u3x_cell(gal, &p_gal, &q_gal);
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{
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u3_noun zep, hod, nex;
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if ( c3y == u3r_du(p_gal) ) {
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u3_noun b_gal = u3h(p_gal);
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u3_noun c_gal = u3t(p_gal);
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u3_noun d_gal = q_gal;
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zep = u3k(b_gal);
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hod = _n_nock_on(u3k(bus), u3k(c_gal));
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nex = u3k(d_gal);
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}
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else {
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u3_noun b_gal = p_gal;
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u3_noun c_gal = q_gal;
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zep = u3k(b_gal);
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hod = u3_nul;
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nex = u3k(c_gal);
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}
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u3a_lose(fol);
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return _n_hint(zep, hod, bus, nex);
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}
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}
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case 11: {
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u3_noun ref = _n_nock_on(u3k(bus), u3k(u3h(gal)));
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u3_noun gof = _n_nock_on(bus, u3k(u3t(gal)));
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u3_noun val;
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u3t_off(noc_o);
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val = u3m_soft_esc(ref, u3k(gof));
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u3t_on(noc_o);
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if ( !_(u3du(val)) ) {
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u3m_bail(u3nt(1, gof, 0));
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}
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if ( !_(u3du(u3t(val))) ) {
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//
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// replace with proper error stack push
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//
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u3t_push(u3nc(c3__hunk, _n_mush(gof)));
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return u3m_bail(c3__exit);
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}
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else {
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u3_noun pro;
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u3z(gof);
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u3z(fol);
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pro = u3k(u3t(u3t(val)));
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u3z(val);
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return pro;
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}
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}
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c3_assert(!"not reached");
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}
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}
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}
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/* u3n_nock_on(): produce .*(bus fol). Do not virtualize.
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*/
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u3_noun
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u3n_nock_on(u3_noun bus, u3_noun fol)
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{
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u3_noun pro;
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u3t_on(noc_o);
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pro = _n_nock_on(bus, fol);
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u3t_off(noc_o);
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return pro;
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}
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/* u3n_kick_on(): fire `gat` without changing the sample.
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*/
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u3_noun
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u3n_kick_on(u3_noun gat)
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{
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return u3j_kink(gat, 2);
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}
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c3_w exc_w;
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/* u3n_slam_on(): produce (gat sam).
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*/
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u3_noun
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u3n_slam_on(u3_noun gat, u3_noun sam)
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{
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u3_noun cor = u3nc(u3k(u3h(gat)), u3nc(sam, u3k(u3t(u3t(gat)))));
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#if 0
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if ( &u3H->rod_u == u3R ) {
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if ( exc_w == 1 ) {
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c3_assert(0);
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}
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exc_w++;
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}
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#endif
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u3z(gat);
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return u3n_kick_on(cor);
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}
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/* u3n_nock_et(): produce .*(bus fol), as ++toon, in namespace.
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*/
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u3_noun
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u3n_nock_et(u3_noun gul, u3_noun bus, u3_noun fol)
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{
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return u3m_soft_run(gul, u3n_nock_on, bus, fol);
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}
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/* u3n_slam_et(): produce (gat sam), as ++toon, in namespace.
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*/
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u3_noun
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u3n_slam_et(u3_noun gul, u3_noun gat, u3_noun sam)
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{
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return u3m_soft_run(gul, u3n_slam_on, gat, sam);
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}
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/* u3n_nock_an(): as slam_in(), but with empty fly.
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*/
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u3_noun
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u3n_nock_an(u3_noun bus, u3_noun fol)
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{
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u3_noun gul = u3nt(u3nt(1, 0, 0), 0, 0); // |=(a/{* *} ~)
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return u3n_nock_et(gul, bus, fol);
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}
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