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rulegen3:: more improvements
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Zeno Rogue
191
rulegen3.cpp
191
rulegen3.cpp
@@ -513,7 +513,19 @@ struct transducer_transitions {
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inline void print(hstream& hs, transducer_transitions* h) { print(hs, "T", index_pointer(h)); }
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inline void print(hstream& hs, const transducer_state& s) { print(hs, "S", tie(s.tstate1, s.tstate2, s.relation)); }
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using transducer = map<transducer_state, transducer_transitions>;
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template<class T> size_t hsh(T t) { return std::hash<T>()(t); }
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struct tshash {
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size_t operator() (const transducer_state& s) const {
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size_t res = hsh(s.tstate1) ^ (hsh(s.tstate2) << 16);
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res ^= size_t(s.relation) + 0x9e3779b9 + (res << 6) + (res >> 2);
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return res;
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}
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};
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using tpair = pair<const transducer_state, transducer_transitions>;
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using transducer = std::unordered_map<transducer_state, transducer_transitions, tshash>;
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transducer autom;
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int comp_step;
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@@ -546,7 +558,15 @@ tcell* get_move(tcell *c, int dir) {
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return c->cmove(dir);
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}
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struct tuplehash {
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size_t operator() (const tuple<tcell*, int, int>& tu) const { return hsh(get<0>(tu)) + (hsh(get<1>(tu)) << 8) + (hsh(get<2>(tu)) << 16); }
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};
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std::unordered_map<tuple<tcell*, int, int>, tcell*, tuplehash> rmmemo;
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tcell *rev_move2(tcell *t, int dir1, int dir2) {
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auto& memo = rmmemo[{t, dir1, dir2}];
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if(memo) return memo;
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if(dir1 != ENDED) t = rev_move(t, dir1);
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if(dir2 != ENDED) {
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t = t->cmove(dir2);
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@@ -555,7 +575,7 @@ tcell *rev_move2(tcell *t, int dir1, int dir2) {
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}
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twalker tw = t; get_parent_dir(tw);
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if(t->dist && t->parent_dir == MYSTERY) throw rulegen_failure("no parent_dir assigned after rev_move2!");
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return t;
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return memo = t;
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}
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vector<int> desc(tcell *t) {
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@@ -664,10 +684,20 @@ void compose_with(const transducer& tr, const transducer& dir, transducer& resul
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transducer_transitions *ires;
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const transducer_transitions *t1;
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const transducer_transitions *t2;
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bool operator < (const searcher& s2) const { return tie(ts1, ts2, ts3, tat, fin1, fin2, fin3, ires, t1, t2) < tie(s2.ts1, s2.ts2, s2.ts3, s2.tat, s2.fin1, s2.fin2, s2.fin3, s2.ires, s2.t1, s2.t2); };
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bool operator == (const searcher& s2) const { return tie(fin1, fin2, fin3, ires, t1, t2) == tie(s2.fin1, s2.fin2, s2.fin3, s2.ires, s2.t1, s2.t2); };
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};
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set<searcher> in_queue;
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struct searchhash {
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size_t operator() (const searcher& s) const {
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size_t res = size_t(s.fin1+2*s.fin2+4*s.fin3);
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res ^= size_t(s.ires) + 0x9e3779b9 + (res << 6) + (res >> 2);
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res ^= size_t(s.t1) + 0x9e3779b9 + (res << 6) + (res >> 2);
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res ^= size_t(s.t2) + 0x9e3779b9 + (res << 6) + (res >> 2);
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return res;
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}
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};
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std::unordered_set<searcher, searchhash> in_queue;
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vector<searcher> q;
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auto enqueue = [&] (const searcher& s) {
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if(in_queue.count(s)) return;
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@@ -684,54 +714,68 @@ void compose_with(const transducer& tr, const transducer& dir, transducer& resul
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searcher sch = searcher{ ts.tstate1, ts.tstate1, ts.tstate1, false, false, false, t.at, &(result[ts]), &(tr.at(ts)), &(dir.at(ts)) };
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enqueue(sch);
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}
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int tdc = 0, tdc2 = 0;
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for(int i=0; i<isize(q); i++) {
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auto sch = q[i];
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if(sch.t1->accepting_directions && sch.t2->accepting_directions)
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sch.ires->accepting_directions = 1;
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int dirs1 = isize(treestates[sch.ts1].rules);
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int dirs2 = isize(treestates[sch.ts2].rules);
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int dirs3 = isize(treestates[sch.ts3].rules);
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searcher next;
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for(int d1=ENDED; d1<dirs1; d1++) {
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if(d1 != ENDED && sch.fin1) break;
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auto r1 = get_abs_rule1(sch.ts1, d1);
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if(r1 < 0) continue;
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for(int d2=ENDED; d2<dirs2; d2++) {
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if(d2 != ENDED && sch.fin2) break;
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auto r2 = get_abs_rule1(sch.ts2, d2);
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if(r2 < 0) continue;
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next.t1 = sch.t1;
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if(d1 != ENDED || d2 != ENDED) {
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if(!sch.t1->t.count({d1, d2})) continue;
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next.t1 = sch.t1->t.at({d1, d2});
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}
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for(int d3=ENDED; d3<dirs3; d3++) {
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if(d3 != ENDED && sch.fin3) break;
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auto r3 = get_abs_rule1(sch.ts3, d3);
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if(r3 < 0) continue;
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next.t2 = sch.t2;
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if(d2 != ENDED || d3 != ENDED) {
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if(!sch.t2->t.count({d2, d3})) continue;
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next.t2 = sch.t2->t.at({d2, d3});
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}
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auto try_d3 = [&] (int d1, int d2, int r1, int r2) {
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tdc++;
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next.ts1 = r1; next.fin1 = d1 == ENDED;
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next.ts2 = r2; next.fin2 = d2 == ENDED;
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next.ts3 = r3; next.fin3 = d3 == ENDED;
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next.tat = rev_move2(sch.tat, d1, d3);
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auto nstate_key = transducer_state { next.ts1, next.ts3, next.tat };
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auto try_done = [&] (int d3, int r3) {
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tdc2++;
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next.ts1 = r1; next.fin1 = d1 == ENDED;
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next.ts2 = r2; next.fin2 = d2 == ENDED;
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next.ts3 = r3; next.fin3 = d3 == ENDED;
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next.tat = rev_move2(sch.tat, d1, d3);
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auto nstate_key = transducer_state { next.ts1, next.ts3, next.tat };
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next.ires = sch.ires;
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if(d1 != ENDED || d3 != ENDED)
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next.ires = sch.ires->t[{d1, d3}] = &(result[nstate_key]);
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next.ires = sch.ires;
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if(d1 != ENDED || d3 != ENDED)
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next.ires = sch.ires->t[{d1, d3}] = &(result[nstate_key]);
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enqueue(next);
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}
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enqueue(next);
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};
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if(d2 == ENDED) {
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next.t2 = sch.t2;
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try_done(ENDED, sch.ts3);
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}
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auto p = sch.t2->t.lower_bound({d2, -999});
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while(p != sch.t2->t.end() && p->first.first == d2) {
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int d3 = p->first.second;
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if(sch.fin3 && d3 != ENDED) break; // we can break right away
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auto r3 = get_abs_rule1(sch.ts3, d3);
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next.t2 = p->second;
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try_done(d3, r3);
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p++;
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}
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};
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next.t1 = sch.t1;
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try_d3(ENDED, ENDED, sch.ts1, sch.ts2);
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for(auto& p12: sch.t1->t) {
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int d1 = p12.first.first;
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int d2 = p12.first.second;
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if(sch.fin1 && d1 != ENDED) break; /* we can break right away -- no more to find */
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if(sch.fin2 && d2 != ENDED) continue; /* ... but here we cannot */
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auto r1 = get_abs_rule1(sch.ts1, d1);
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auto r2 = get_abs_rule1(sch.ts2, d2);
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next.t1 = p12.second;
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try_d3(d1, d2, r1, r2);
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}
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}
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println(hlog, "composition queue = ", isize(q), " tdc = ", tie(tdc, tdc2));
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}
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void throw_identity_errors(const transducer& id, const vector<int>& cyc) {
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@@ -1052,11 +1096,14 @@ EX void find_multiple_interpretation() {
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throw rulegen_failure("no multiple interpretation found");
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}
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EX int max_err_iter = 4;
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EX void test_transducers() {
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if(flags & w_skip_transducers) return;
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autom.clear();
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int iterations = 0;
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int multiple_interpretations = 0;
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int err_iter = 0;
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while(true) {
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next_iteration:
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check_timeout();
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@@ -1067,10 +1114,20 @@ EX void test_transducers() {
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struct searcher {
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int ts;
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vector<transducer_transitions*> pstates;
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bool operator < (const searcher& s2) const { return tie(ts, pstates) < tie(s2.ts, s2.pstates); }
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// bool operator < (const searcher& s2) const { return tie(ts, pstates) < tie(s2.ts, s2.pstates); }
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bool operator == (const searcher& s2) const { return tie(ts, pstates) == tie(s2.ts, s2.pstates); }
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};
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set<searcher> in_queue;
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struct searchhash {
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size_t operator() (const searcher& s) const {
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size_t res = hsh(s.ts);
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// https://stackoverflow.com/questions/20511347/a-good-hash-function-for-a-vector
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for(auto p: s.pstates) res ^= size_t(p) + 0x9e3779b9 + (res << 6) + (res >> 2);
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return res;
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}
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};
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std::unordered_set<searcher, searchhash> in_queue;
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vector<searcher> q;
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vector<int> parent_id;
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vector<int> parent_dir;
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@@ -1090,7 +1147,8 @@ EX void test_transducers() {
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searcher sch = searcher{ ts.tstate1, { &(autom[ts]) } };
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enqueue(sch, -1, -1);
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}
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for(int i=0; i<isize(q); i++) {
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auto process = [&] (int i) {
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searcher sch = q[i];
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int dirs = isize(treestates[sch.ts].rules);
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@@ -1101,25 +1159,26 @@ EX void test_transducers() {
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for(auto v: sch.pstates) if(v->accepting_directions & (1<<dir)) qty++;
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for(auto v: sch.pstates) for(auto& p: v->t) if(p.first.first == ENDED && (p.second->accepting_directions & (1<<dir))) qty++;
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if(qty > 1) {
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vstate vs;
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vector<int> path1;
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int at = build_vstate(vs, path1, parent_dir, parent_id, i, [&] (int i) { return q[i].ts; });
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println(hlog, "after path = ", path1, " got multiple interpretation");
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for(auto v: sch.pstates) if(v->accepting_directions & (1<<dir)) println(hlog, "state ", v);
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for(auto v: sch.pstates) for(auto& p: v->t) if(p.first.first == ENDED && (p.second->accepting_directions & (1<<dir))) println(hlog, "state ", v, " after accepting END/", p.first.second);
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println(hlog, "starting at state: ", q[at].ts, " reached state ", q[i].ts);
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at = i;
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while(true) {
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println(hlog, "state ", q[at].ts, " vs ", q[at].pstates, " dir = ", parent_dir[at]);
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at = parent_id[at];
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if(at == -1) break;
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}
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multiple_interpretations++;
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// print_transducer(autom);
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if(!(flags & w_r3_all_errors)) find_multiple_interpretation();
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if(!(flags & w_r3_all_errors)) {
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vstate vs;
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vector<int> path1;
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int at = build_vstate(vs, path1, parent_dir, parent_id, i, [&] (int i) { return q[i].ts; });
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println(hlog, "after path = ", path1, " got multiple interpretation");
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for(auto v: sch.pstates) if(v->accepting_directions & (1<<dir)) println(hlog, "state ", v);
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for(auto v: sch.pstates) for(auto& p: v->t) if(p.first.first == ENDED && (p.second->accepting_directions & (1<<dir))) println(hlog, "state ", v, " after accepting END/", p.first.second);
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println(hlog, "starting at state: ", q[at].ts, " reached state ", q[i].ts);
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at = i;
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while(true) {
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println(hlog, "state ", q[at].ts, " vs ", q[at].pstates, " dir = ", parent_dir[at]);
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at = parent_id[at];
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if(at == -1) break;
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}
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find_multiple_interpretation();
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}
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}
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if(qty == 0) {
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vstate vs;
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@@ -1171,11 +1230,15 @@ EX void test_transducers() {
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next.pstates.resize(ip - next.pstates.begin());
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enqueue(next, i, s);
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}
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}
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};
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for(int i=0; i<isize(q); i++) process(i);
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if(changes) {
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println(hlog, "changes = ", changes, " with ", isize(autom), " states");
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goto next_iteration;
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println(hlog, "changes = ", changes, " with ", isize(autom), " states, queue size = ", isize(q), ", add = ", isize(important)-impcount, " MI = ", multiple_interpretations);
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if(isize(important) > impcount || multiple_interpretations) err_iter++;
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if(err_iter < max_err_iter) goto next_iteration;
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if(err_iter == max_err_iter) max_err_iter++;
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}
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if((flags & w_r3_all_errors) && isize(important) > impcount) throw rulegen_retry("errors found by transducers");
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@@ -1185,7 +1248,7 @@ EX void test_transducers() {
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find_multiple_interpretation();
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}
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println(hlog, "transducers found successfully after ", iterations, " iterations, ", isize(autom), " states checked, queue size = ", isize(q));
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println(hlog, "transducers found successfully after ", iterations, " iterations, ", isize(autom), " states checked, queue size = ", isize(q), " rmmemo size = ", isize(rmmemo));
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vector<vector<transducer>> special(isize(t_origin));
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for(int tid=0; tid<isize(t_origin); tid++) {
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@@ -1534,6 +1597,8 @@ EX void cleanup3() {
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qroad_for.clear();
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qroad_memo.clear();
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possible_parents.clear();
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rmmemo.clear();
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max_err_iter = 4;
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}
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#if CAP_COMMANDLINE
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