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rulegen:: simpler branch testing
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Zeno Rogue
parent
bc511cf37b
commit
47c6495652
281
rulegen.cpp
281
rulegen.cpp
@ -745,6 +745,13 @@ EX set<tcell*> single_live_branch_close_to_root;
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/** is what on the left side, or the right side, of to_what? */
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void treewalk(twalker& cw, int delta) {
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int d = get_parent_dir(cw.at);
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if(cw.spin == d || get_parent_dir(cw.cpeek()) == (cw+wstep).spin)
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cw += wstep;
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cw+=delta;
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}
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int get_side(twalker what) {
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twalker w = what;
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twalker tw = what + wstep;
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@ -784,22 +791,16 @@ int get_side(twalker what) {
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// failed to solve this in the simple way (ended at the root) -- go around the tree
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twalker wl = what;
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twalker wr = wl;
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auto go = [&] (twalker& cw, int delta) {
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int d = get_parent_dir(cw.at);
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if(cw.spin == d || get_parent_dir(cw.cpeek()) == (cw+wstep).spin)
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cw += wstep;
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cw+=delta;
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};
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auto to_what = what + wstep;
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auto ws = what; go(ws, 0); if(ws == to_what) return 0;
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auto ws = what; treewalk(ws, 0); if(ws == to_what) return 0;
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while(true) {
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steps++; if(steps > 1000000) {
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debuglist = {what, to_what, w, tw};
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throw rulegen_failure("get_side freeze II");
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}
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go(wl, -1);
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go(wr, +1);
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treewalk(wl, -1);
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treewalk(wr, +1);
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if(wl == to_what) return +1;
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if(wr == to_what) return -1;
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}
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@ -1096,199 +1097,129 @@ void find_possible_parents() {
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/* == branch testing == */
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struct bad_tree : rulegen_retry {
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bad_tree() : rulegen_retry("bad tree") {}
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};
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void verified_treewalk(twalker& cw, int delta) {
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if((cw+wstep).spin == get_parent_dir(cw.peek())) {
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}
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}
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struct branchdata {
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int id;
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int dir;
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twalker at;
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int temporary;
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void step() {
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if(treestates[id].rules[dir] < 0)
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throw rulegen_failure("invalid step");
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id = treestates[id].rules[dir]; dir = 0; at += wstep;
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auto co = get_code(at.at);
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auto& d1 = co.first;
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auto& id1 = co.second;
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if(id != id1 || d1 != at.spin) {
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important.push_back(at.at);
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if(debugflags & DF_GEOM)
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println(hlog, "expected ", id, " found ", id1, " at ", at);
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important.push_back(at.at->cmove(get_parent_dir(at.at)));
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throw bad_tree();
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}
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}
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void spin(int i) {
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at += i;
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dir += i;
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dir = gmod(dir, isize(treestates[id].rules));
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}
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};
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using tsinfo = pair<int, int>;
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inline void print(hstream& hs, const branchdata& bd) { print(hs, "[", bd.id,":",bd.dir, " ", bd.at, ":", bd.temporary, "]"); }
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tsinfo get_tsinfo(twalker tw) {
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auto co = get_code(tw.at);
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int spin;
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if(co.first == -1) spin = tw.spin;
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else spin = gmod(tw.spin - co.first, tw.at->type);
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return {co.second, spin};
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}
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int get_rule(tsinfo s) {
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return treestates[s.first].rules[s.second];
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}
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set<vector<tsinfo> > verified_branches;
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void push_deadstack(vector<tsinfo>& hash, twalker w, tsinfo tsi, int dir) {
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hash.push_back(tsi);
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void advance(vector<branchdata>& bdata, branchdata at, int dir, bool start_forward, bool stack, int distlimit) {
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if(start_forward) {
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at.step();
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at.spin(dir);
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}
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else {
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at.spin(dir);
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}
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vector<branchdata> b;
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int steps = 0;
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while(true) {
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steps++; if(steps == max_adv_steps)
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throw rulegen_failure("max_adv_steps exceeded");
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auto& ts = treestates[at.id];
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auto r = ts.rules[at.dir];
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if(ts.sub_status[at.dir]) {
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at.temporary = 0;
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b.push_back(at);
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b.push_back(at);
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at.spin(dir);
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}
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else if(r < 0) {
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at.temporary = 0;
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b.push_back(at);
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break;
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}
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else if(!treestates[r].is_live) {
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advance(b, at, dir, true, false, distlimit);
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if(b.back().dir == 0)
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b.pop_back();
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else
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advance(b, at, -dir, true, true, distlimit);
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at.spin(dir);
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tsi.second += dir; w += dir;
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auto& ts = treestates[tsi.first];
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if(tsi.second == 0 || tsi.second == isize(ts.rules)) {
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w += wstep;
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tsi = get_tsinfo(w);
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hash.push_back(tsi);
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}
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else {
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at.step();
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if(at.at.at->dist < distlimit || !ts.is_live) at.spin(dir);
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else {
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at.temporary = dir;
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b.push_back(at);
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break;
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}
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}
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}
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if(stack) {
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while(b.size()) { bdata.push_back(b.back()); b.pop_back(); }
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}
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else {
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for(auto& bd: b) bdata.push_back(bd);
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}
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}
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void verify_lr(branchdata bd, int dir) {
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return;
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if(dir) { bd.spin(dir); if(bd.dir == 0) bd.dir = bd.at.at->type; }
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auto& r = treestates[bd.id].rules;
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for(int i=0; i<isize(r); i++) {
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int val = i < bd.dir ? DIR_LEFT : DIR_RIGHT;
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int wrong = val ^ DIR_LEFT ^ DIR_RIGHT;
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if(r[i] == wrong) {
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debuglist = { bd.at };
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throw rulegen_failure("assign_lr direction error");
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int r = ts.rules[tsi.second];
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if(r > 0 && treestates[r].is_live) return;
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}
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}
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}
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set<vector<int> > branch_hashes;
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void verified_treewalk(twalker& tw, int id, int dir) {
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if(id >= 0) {
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auto co = get_code(tw.cpeek());
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if(co.second != id || co.first != (tw+wstep).spin) {
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important.push_back(tw.at);
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important.push_back(tw.cpeek());
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if(debugflags & DF_GEOM)
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println(hlog, "expected ", make_pair((tw+wstep).spin,id), " found ", co);
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debuglist = {tw, tw+wstep};
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throw rulegen_retry("verify_advance failed");
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}
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}
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treewalk(tw, dir);
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}
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void examine_branch(int id, int left, int right) {
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auto rg = treestates[id].giver;
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if(debugflags & DF_GEOM)
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println(hlog, "need to examine branches ", tie(left, right), " of ", id, " starting from ", rg);
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indenter ind(2);
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vector<branchdata> bdata;
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int dist_at = rg.at->dist;
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do {
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if(true) {
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auto bl = branchdata{id, left, rg+left, dist_at+dlbonus};
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bl.temporary = 0;
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if(treestates[id].rules[left] >= 0)
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advance(bdata, bl, -1, true, true, dist_at+5);
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else bdata.push_back(bl);
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}
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left++;
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if(left == rg.at->type) left = 0;
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if(true) {
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auto br = branchdata{id, left, rg+left, dist_at+dlbonus};
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br.temporary = 0;
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if(treestates[id].rules[left] >= 0)
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advance(bdata, br, +1, true, false, dist_at+5);
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else bdata.push_back(br);
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}
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}
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while(left != right);
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auto wl = rg+left;
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auto wr = rg+left+1;
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vector<twalker> lstack, rstack;
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int steps = 0;
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while(true) {
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steps++;
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if(steps == max_examine_branch) {
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debuglist = { rg };
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if(steps > max_examine_branch) {
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debuglist = { rg+left, wl, wr };
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throw rulegen_failure("max_examine_branch exceeded");
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}
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if(isize(bdata) > max_bdata) {
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debuglist = { rg };
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throw rulegen_failure("max_bdata exceeded");
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auto tsl = get_tsinfo(wl);
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auto tsr = get_tsinfo(wr);
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auto rl = get_rule(tsl);
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auto rr = get_rule(tsr);
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// println(hlog, "wl = ", wl, " -> ", wl+wstep, " R", rl, " wr = ", wr, " -> ", wr+wstep, " R", rr, " lstack = ", lstack, " rstack = ", rstack);
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if(rl == DIR_RIGHT && rr == DIR_LEFT && lstack.empty() && rstack.empty()) {
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vector<tsinfo> hash;
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push_deadstack(hash, wl, tsl, -1);
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hash.emplace_back(-1, -1);
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push_deadstack(hash, wr, tsr, +1);
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// println(hlog, "hash = ", hash);
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if(verified_branches.count(hash)) return;
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verified_branches.insert(hash);
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verified_treewalk(wl, rl, -1);
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verified_treewalk(wr, rr, +1);
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}
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/* advance both */
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vector<branchdata> bdata2;
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int advcount = 0, eatcount = 0;
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for(int i=0; i<isize(bdata); i+=2) {
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if(!bdata[i].temporary && !bdata[i+1].temporary && bdata[i].at + wstep == bdata[i+1].at && min(bdata[i].at.at->dist, bdata[i+1].at.at->dist) <= dist_at) {
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println(hlog, "pairing ", bdata[i], " and ", bdata[i+1]);
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advcount++;
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if(bdata2.size() && !bdata2.back().temporary && bdata2.back().at == bdata[i].at) {
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println(hlog, "eating ", bdata2.back(), " and ", bdata[i]);
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verify_lr(bdata[i], 0);
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eatcount++; bdata2.pop_back();
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}
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else
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advance(bdata2, bdata[i], -1, false, true, dist_at+dlbonus);
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if(i+2 < isize(bdata) && !bdata[i+1].temporary && !bdata[i+2].temporary && bdata[i+1].at == bdata[i+2].at) {
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println(hlog, "eating ", bdata[i+1], " and ", bdata[i+2]);
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verify_lr(bdata[i+1], +1);
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eatcount++; i += 2; bdata2.push_back(bdata[i+1]);
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}
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else
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advance(bdata2, bdata[i+1], +1, false, false, dist_at+dlbonus);
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}
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else {
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if(bdata[i].temporary && bdata[i].at.at->dist <= dist_at+dlbonus-2) {
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advcount++;
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advance(bdata2, bdata[i], bdata[i].temporary, false, bdata[i].temporary < 0, dist_at+dlbonus);
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}
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else bdata2.push_back(bdata[i]);
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else if(rl == DIR_RIGHT && !lstack.empty() && lstack.back() == wl+wstep) {
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lstack.pop_back();
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verified_treewalk(wl, rl, -1);
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}
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if(bdata[i+1].temporary && bdata[i+1].at.at->dist <= dist_at+3) {
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advcount++;
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advance(bdata2, bdata[i+1], bdata[i+1].temporary, false, bdata[i+1].temporary < 0, dist_at+dlbonus);
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}
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else bdata2.push_back(bdata[i+1]);
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}
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else if(rr == DIR_LEFT && !rstack.empty() && rstack.back() == wr+wstep) {
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rstack.pop_back();
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verified_treewalk(wr, rr, +1);
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}
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bdata = bdata2;
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if(!advcount) dist_at++;
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if(advcount) {
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vector<int> hash;
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for(int i=0; i<isize(bdata); i++) {
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hash.push_back(bdata[i].id);
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hash.push_back(bdata[i].dir);
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hash.push_back(bdata[i].temporary);
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hash.push_back(bdata[i].at.at->dist - dist_at);
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}
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if(branch_hashes.count(hash)) {
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return;
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}
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branch_hashes.insert(hash);
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else if(rl == DIR_LEFT) {
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lstack.push_back(wl);
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verified_treewalk(wl, rl, -1);
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}
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else if(rr == DIR_RIGHT) {
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rstack.push_back(wr);
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verified_treewalk(wr, rr, +1);
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}
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else if(rl != DIR_RIGHT)
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verified_treewalk(wl, rl, -1);
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else if(rr != DIR_RIGHT)
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verified_treewalk(wr, rr, +1);
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else throw rulegen_failure("cannot advance while examining");
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}
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}
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@ -1407,7 +1338,7 @@ void rules_iteration() {
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// print_rules();
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handle_distance_errors();
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branch_hashes.clear();
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verified_branches.clear();
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int q = isize(single_live_branch_close_to_root);
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