mirror of
https://github.com/urbit/shrub.git
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419 lines
12 KiB
C
419 lines
12 KiB
C
/* j/6/find.c
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**
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*/
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#include "all.h"
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static u3_noun
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_find_outer(u3_noun van,
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u3_noun sut,
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u3_noun dep,
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u3_noun way,
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u3_noun hyp,
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u3_noun gil)
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{
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}
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{
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u3_noun p_sut, q_sut, r_sut;
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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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{
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}
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case c3__void:
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{
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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: u3x_cell(u3t(sut), &p_sut, &q_sut);
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{
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}
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case c3__cell: u3x_cell(u3t(sut), &p_sut, &q_sut);
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{
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}
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case c3__core: u3x_cell(u3t(sut), &p_sut, &q_sut);
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{
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}
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case c3__face: u3x_cell(u3t(sut), &p_sut, &q_sut);
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{
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}
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case c3__fork: u3x_cell(u3t(sut), &p_sut, &q_sut);
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{
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}
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case c3__hold: p_sut = u3t(sut);
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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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_find_in(u3_noun van,
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u3_noun sut,
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u3_noun dep,
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u3_noun way,
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u3_noun hyp,
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u3_noun gil)
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{
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u3_noun p_sut, q_sut;
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c3_assert(0);
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if ( c3y == u3ud(sut) ) {
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return u3nc(u3k(dep), u3_nul);
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}
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else switch ( u3h(sut) ) {
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default: return u3nc(u3k(dep), u3_nul);
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case c3__bull: {
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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 ( (c3n == u3du(cug)) ||
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(c3n == u3r_sing(u3t(cug), u3h(p_sut))) ) {
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return _find_in(van, q_sut, dep, way, cug, gil);
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}
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else {
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if ( 0 == dep ) {
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return u3nc(0,
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u3nt(u3_nul,
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1,
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u3nt(2, u3k(p_sut),
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u3k(q_sut))));
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} else {
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return _find_in(van, q_sut, u3qa_dec(dep), way, cug, gil);
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}
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}
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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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u3_noun taf = _find_in(van, p_sut, dep, way, cug, gil);
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u3_noun p_taf = u3h(taf);
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u3_noun q_taf = u3t(taf);
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u3_noun ret;
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if ( u3_nul == q_taf ) {
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u3_noun bov = _find_in(van, q_sut, p_taf, way, cug, gil);
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u3_noun p_bov = u3h(bov);
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u3_noun q_bov = u3t(bov);
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if ( u3_nul == q_bov ) {
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ret = u3k(bov);
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}
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else {
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u3_noun puq_bov, quq_bov;
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u3r_mean(q_bov, 6, &puq_bov, 7, &quq_bov, 0);
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ret = u3nq(u3k(p_bov),
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u3_nul,
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u3qc_peg(3, puq_bov),
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u3k(quq_bov));
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}
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u3z(bov);
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}
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else {
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u3_noun puq_taf, quq_taf;
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u3r_mean(q_taf, 6, &puq_taf, 7, &quq_taf, 0);
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ret = u3nq(u3k(p_taf),
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u3_nul,
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u3qc_peg(2, puq_taf),
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u3k(quq_taf));
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}
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u3z(taf);
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return ret;
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}
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}
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case c3__core: {
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u3_noun pq_sut, qq_sut, rq_sut;
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u3_noun prq_sut, qrq_sut;
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if ( (c3n == u3r_trel(sut, 0, &p_sut, &q_sut)) ||
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(c3n == u3r_trel(q_sut, &pq_sut, &qq_sut, &rq_sut)) ||
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(c3n == u3r_cell(rq_sut, &prq_sut, &qrq_sut)) )
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{
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return u3m_bail(c3__fail);
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} else {
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u3_noun zem = (c3n == u3du(cug))
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? u3_nul
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: u3qf_look(u3t(cug), qrq_sut);
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if ( (u3_nul != zem) && (0 != dep) ) {
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u3_noun ped;
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ped = u3qa_dec(dep);
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u3z(dep); dep = ped;
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u3z(zem);
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zem = u3_nul;
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}
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if ( u3_nul == zem ) {
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u3_noun taf = _find_in(van, p_sut, dep, way, cug, gil);
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u3_noun p_taf = u3h(taf);
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u3_noun q_taf = u3t(taf);
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if ( u3_nul == q_taf ) {
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u3z(taf);
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return u3nc(u3k(dep), u3_nul);
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}
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else {
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u3_noun puq_taf, quq_taf;
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u3_noun pro;
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u3r_mean(q_taf, 6, &puq_taf, 7, &quq_taf, 0);
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if ( c3n == u3qfu_park(van, sut, way, puq_taf) )
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{
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u3_noun weh = u3qfu_shep(van, "way", 'a', u3k(way));
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u3_noun waz = u3qfu_shep(van, "axis", 'd', u3k(puq_taf));
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u3t_push(u3nc(c3__mean, weh));
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u3t_push(u3nc(c3__mean, waz));
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return u3m_error("find-park");
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}
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else {
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pro = u3nq(u3k(p_taf),
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u3_nul,
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u3qc_peg(3, puq_taf),
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u3k(quq_taf));
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u3z(taf);
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return pro;
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}
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}
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}
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else {
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u3_noun u_zem = u3t(zem);
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u3_noun pu_zem = u3h(u_zem);
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u3_noun qu_zem = u3t(u_zem);
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u3_noun mut;
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u3_noun pro;
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mut = u3nt(c3__core,
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u3k(p_sut),
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u3nt(c3__gold,
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u3k(qq_sut),
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u3k(rq_sut)));
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pro = u3nc(0,
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u3nq(u3_nul,
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1,
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1,
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u3nc(u3qc_peg(2, pu_zem),
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u3nc(u3nc(mut, u3k(qu_zem)),
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u3_nul))));
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u3z(zem);
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return pro;
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}
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}
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}
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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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if ( (c3n == u3du(cug)) || (c3n == u3r_sing(u3t(cug), p_sut)) ) {
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return u3nc(u3k(dep), u3_nul);
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} else {
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if ( 0 == dep ) {
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return u3nc(0, u3nq(u3_nul, 1, 0, u3k(q_sut)));
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} else {
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return u3nc
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(u3qa_dec(dep), u3_nul);
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}
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}
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}
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}
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case c3__cube: {
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u3_noun fop = u3qfu_repo(van, sut);
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u3_noun pro = _find_in(van, fop, dep, way, cug, gil);
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u3z(fop);
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return pro;
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}
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case c3__fork: {
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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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if ( (c3y == u3qdi_has(gil, q_sut)) ) {
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return _find_in(van, p_sut, dep, way, cug, gil);
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}
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else if ( (c3y == u3qdi_has(gil, p_sut)) ) {
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return _find_in(van, q_sut, dep, way, cug, gil);
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}
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else {
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u3_noun hax = _find_in(van, p_sut, dep, way, cug, gil);
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u3_noun yor = _find_in(van, q_sut, dep, way, cug, gil);
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u3_noun p_hax = u3h(hax);
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u3_noun p_yor = u3h(yor);
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u3_noun q_hax = u3t(hax);
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u3_noun q_yor = u3t(yor);
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u3_noun puq_hax, quq_hax;
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u3_noun puq_yor, quq_yor;
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u3_noun ret = 0;
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if ( u3_nul != q_hax ) {
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u3r_mean(q_hax, 6, &puq_hax, 7, &quq_hax, 0);
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}
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if ( u3_nul != q_yor ) {
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u3r_mean(q_yor, 6, &puq_yor, 7, &quq_yor, 0);
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}
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if ( c3y == u3r_sing(hax, yor) ) {
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ret = u3k(hax);
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}
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else {
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if ( (c3n == u3r_sing(p_hax, p_yor)) ||
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((u3_nul == q_hax) || (u3_nul == q_yor)) ||
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(c3n == u3r_sing(puq_hax, puq_yor)) ||
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(c3n == u3r_sing(u3h(quq_hax), u3h(quq_yor))) )
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{
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return u3m_error("find-fork");
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}
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switch ( u3h(quq_hax) ) {
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case 0: {
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u3_noun pquq_hax = u3t(quq_hax);
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u3_noun pquq_yor = u3t(quq_yor);
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ret = u3nc(u3k(p_hax),
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u3nq(u3_nul,
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u3k(puq_hax),
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0,
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u3qf_fork(pquq_hax, pquq_yor)));
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break;
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}
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case 1: {
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u3_noun pquq_hax, qquq_hax, pquq_yor, qquq_yor;
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u3x_cell(u3t(quq_hax), &pquq_hax, &qquq_hax);
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u3x_cell(u3t(quq_yor), &pquq_yor, &qquq_yor);
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if ( c3n == u3r_sing(pquq_hax, pquq_yor) ) {
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return u3m_error("find-fork");
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} else {
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ret = u3nc(u3k(p_hax),
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u3nq(u3_nul,
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u3k(puq_hax),
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1,
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u3nc(u3k(pquq_hax),
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u3qb_weld(qquq_hax, qquq_yor))));
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break;
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}
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}
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case 2: {
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u3_noun pquq_hax, qquq_hax, pquq_yor, qquq_yor;
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u3_noun ppquq_hax, qpquq_hax, rpquq_hax, spquq_hax;
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u3_noun ppquq_yor, qpquq_yor, rpquq_yor, spquq_yor;
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u3x_cell(u3t(quq_hax), &pquq_hax, &qquq_hax);
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u3x_cell(u3t(quq_yor), &pquq_yor, &qquq_yor);
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u3x_qual(pquq_hax,
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&ppquq_hax, &qpquq_hax, &rpquq_hax, &spquq_hax);
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u3x_qual(pquq_yor,
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&ppquq_yor, &qpquq_yor, &rpquq_yor, &spquq_yor);
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if ( (c3n == u3r_sing(ppquq_hax, ppquq_yor)) ||
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(c3n == u3r_sing(qpquq_hax, qpquq_yor)) ||
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(c3n == u3r_sing(rpquq_hax, rpquq_yor)) )
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{
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return u3m_error("find-fork");
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}
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else {
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ret = u3nc(u3k(p_hax),
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u3nq(u3_nul,
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u3k(puq_hax),
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2,
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u3nc(u3nq(u3k(ppquq_hax),
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u3k(qpquq_hax),
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u3k(rpquq_hax),
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u3qf_fork(spquq_hax,
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spquq_yor)),
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u3qf_fork(qquq_hax, qquq_yor))));
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break;
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}
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}
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}
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}
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u3z(yor);
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u3z(hax);
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return ret;
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}
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}
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case c3__hold: p_sut = u3t(sut);
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{
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if ( (c3y == u3qdi_has(gil, sut)) ) {
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return u3nc(u3k(dep), u3_nul);
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}
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else {
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u3_noun zoc = u3qdi_put(gil, sut);
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u3_noun fop = u3qfu_repo(van, sut);
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u3_noun pro = _find_in(van, fop, dep, way, cug, zoc);
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u3z(fop);
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u3z(zoc);
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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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u3_noun
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_cqfu_find(u3_noun van,
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u3_noun sut,
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u3_noun dep,
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u3_noun way,
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u3_noun cug)
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{
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return _find_in(van, sut, dep, way, cug, u3_nul);
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}
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/* boilerplate
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*/
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u3_noun
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u3wfu_find(u3_noun cor)
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{
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u3_noun sut, dep, way, cug, van;
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if ( (c3n == u3r_mean(cor, u3x_sam_2, &dep,
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u3x_sam_6, &way,
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u3x_sam_7, &cug,
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u3x_con, &van,
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0)) ||
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(u3_none == (sut = u3r_at(u3x_sam, van))) )
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{
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return u3m_bail(c3__fail);
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} else {
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return _cqfu_find(van, sut, dep, way, cug);
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}
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}
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u3_noun
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u3qfu_find(u3_noun van,
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u3_noun sut,
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u3_noun dep,
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u3_noun way,
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u3_noun cug)
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{
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c3_m fun_m = c3__find + !!u3r_at(u3qfu_van_vet, van);
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u3_noun pro = u3z_find_4(fun_m, sut, dep, way, cug);
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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 = _cqfu_find(van, sut, dep, way, cug);
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return u3z_save_4(fun_m, sut, dep, way, cug, pro);
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}
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}
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