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rulegen:: skipping branches which seem good

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This commit is contained in:
Zeno Rogue 2021-12-27 23:09:37 +01:00
parent a5d24e0ff7
commit 468873da29
1 changed files with 30 additions and 4 deletions
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34
rulegen.cpp
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@ -1045,6 +1045,7 @@ struct treestate {
twalker giver;
int sid;
int parent_dir;
int astate;
twalker where_seen;
bool is_live;
bool is_possible_parent;
@ -1254,6 +1255,7 @@ EX pair<int, int> get_treestate_id(twalker& cw) {
nts.where_seen = cw;
nts.known = false;
nts.is_live = true;
nts.astate = co.second;
}
co.second = v->dir;
return co;
@ -1543,7 +1545,7 @@ void verified_treewalk(twalker& tw, int id, int dir) {
treewalk(tw, dir);
}
void examine_branch(int id, int left, int right) {
bool examine_branch(int id, int left, int right) {
auto rg = treestates[id].giver;
if(debugflags & DF_GEOM)
@ -1587,7 +1589,7 @@ void examine_branch(int id, int left, int right) {
if(0) if(debugflags & DF_GEOM)
println(hlog, "got hash: ", hash);
if(verified_branches.count(hash)) {
return;
return true;
}
verified_branches.insert(hash);
@ -1626,6 +1628,7 @@ void examine_branch(int id, int left, int right) {
}
catch(verify_advance_failed&) {
if(flags & w_examine_once) throw rulegen_retry("advance failed");
return false;
}
}
@ -1707,6 +1710,9 @@ void clear_treestates() {
if(a->id == MYSTERY) a->dir = MYSTERY;
}
using branch_check = tuple<int, int, int>;
set<branch_check> checks_to_skip;
EX void rules_iteration() {
try_count++;
debuglist = {};
@ -1795,6 +1801,17 @@ EX void rules_iteration() {
handle_queued_extensions();
vector<reaction_t> skipped_branches;
auto examine_or_skip_branch = [&] (int id, int fb, int sb) {
auto b = branch_check{treestates[id].astate, fb, sb};
if(checks_to_skip.count(b)) {
skipped_branches.emplace_back([id, fb, sb] { examine_branch(id, fb, sb); });
return;
}
if(examine_branch(id, fb, sb)) checks_to_skip.insert(b);
};
for(int id=0; id<isize(treestates); id++) if(treestates[id].is_live) {
auto r = treestates[id].rules; /* no & because treestates might have moved */
if(r.empty()) continue;
@ -1805,7 +1822,7 @@ EX void rules_iteration() {
if(r[i] >= 0 && treestates[r[i]].is_live) {
if(first_live_branch == -1) first_live_branch = i;
if(last_live_branch >= 0)
examine_branch(id, last_live_branch, i);
examine_or_skip_branch(id, last_live_branch, i);
last_live_branch = i;
qbranches++;
}
@ -1827,9 +1844,11 @@ EX void rules_iteration() {
clear_sidecache_and_codes();
throw rulegen_retry("single live branch");
}
if(treestates[id].is_root) examine_branch(id, last_live_branch, first_live_branch);
if(treestates[id].is_root)
examine_or_skip_branch(id, last_live_branch, first_live_branch);
}
after_branches:
for(int id=0; id<isize(treestates); id++) if(!treestates[id].giver.at) {
important.push_back(treestates[id].where_seen);
}
@ -1839,6 +1858,13 @@ EX void rules_iteration() {
if(isize(important) != N)
throw rulegen_retry("need more rules after examine");
if(skipped_branches.size()) {
checks_to_skip.clear();
for(auto sb: skipped_branches) sb();
skipped_branches.clear();
goto after_branches;
}
minimize_rules();
find_possible_parents();