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rulegen:: fixed for the case of a single live branch at root. TBH more hack than a proper fix

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This commit is contained in:
Zeno Rogue 2021-08-15 21:01:47 +02:00
parent fc0763362e
commit f19ba00324
1 changed files with 20 additions and 5 deletions
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25
rulegen.cpp
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@ -1124,14 +1124,22 @@ void advance(vector<branchdata>& bdata, branchdata at, int dir, bool start_forwa
}
}
bool dubious_lr;
void verify_lr(branchdata bd, int dir) {
if(dir) { bd.spin_full(dir); if(bd.dir == 0) bd.dir = bd.at.at->type; }
auto& r = treestates[bd.id].rules;
for(int i=0; i<isize(r); i++) {
int val = i < bd.dir ? DIR_LEFT : DIR_RIGHT;
int wrong = val ^ DIR_LEFT ^ DIR_RIGHT;
if(r[i] == wrong)
throw rulegen_failure("assign_lr direction error");
if(r[i] == wrong) {
if(dubious_lr)
r[i] = val;
else {
debuglist = { bd.at };
throw rulegen_failure("assign_lr direction error");
}
}
}
}
@ -1143,7 +1151,8 @@ void examine_branch(int id, int left, int right) {
println(hlog, "need to examine branches ", tie(left, right), " of ", id, " starting from ", rg);
vector<branchdata> bdata;
int dist_at = rg.at->dist;
while(left != right) {
dubious_lr = left == right;
do {
/* can be false in case of multi-edges */
if(treestates[id].rules[left] >= 0) {
@ -1161,14 +1170,20 @@ void examine_branch(int id, int left, int right) {
advance(bdata, br, +1, true, false, dist_at+5);
}
}
while(left != right);
int steps = 0;
while(true) {
steps++;
if(steps == max_examine_branch)
if(steps == max_examine_branch) {
debuglist = { rg };
throw rulegen_failure("max_examine_branch exceeded");
}
if(isize(bdata) > max_bdata)
if(isize(bdata) > max_bdata) {
debuglist = { rg };
throw rulegen_failure("max_bdata exceeded");
}
/* advance both */
vector<branchdata> bdata2;