//--------------------------------------------------------------------------------------------------
void Index::get_reachable(unsigned x, std::vector<unsigned>& nodes){
x=g->getNodeId(x);
if (!intervals[x])
return;
IntervalList* intlist = intervals[x];
const std::vector<unsigned>& lower=intlist->get_lower();
const std::vector<unsigned>& upper=intlist->get_upper();
for (unsigned i=0; i < lower.size(); i++){
for (unsigned node=lower[i]; node<=upper[i];++node){
nodes.push_back(g->getNodeById(id2node[node]));
}
}
}
/*!
* \param other interval list to merge into this interval list
*/
void IntervalList::merge_exact(const IntervalList& other) {
// find starting point
if (other.empty()) {
return;
}
int last_index = 0;
// intervals of other list
const std::vector<unsigned>& o_lower = other.get_lower();
const std::vector<unsigned>& o_upper = other.get_upper();
// is this interval list is empty, just copy other list
if (empty()) {
std::copy(o_lower.begin(), o_lower.end(), std::back_inserter(lower_));
std::copy(o_upper.begin(), o_upper.end(), std::back_inserter(upper_));
return;
} else {
// for each interval in other list, find relevant position to insert
unsigned a, b;
int idxa, idxb;
bool insa, insb;
for (unsigned i = 0; i < o_lower.size(); ++i) {
a = o_lower[i], b = o_upper[i];
insa = false, insb = false;
idxa = find(a); //, last_index_);
(void) last_index;
idxb = idxa + 1;
/* distinguish 4 cases a,b between/within intervals */
// determine
// - index of interval containing or left of a, flag: inside
// - index of interval containing or right of b, flag: inside
if (idxa != -1 && a <= upper_[idxa] + 1) {
insa = true;
}
while (idxb < int(lower_.size()) && b >= lower_[idxb] - 1) {
++idxb;
}
if (idxb != 0 && b <= upper_[idxb - 1] + 1) {
insb = true;
--idxb;
} else {
insb = false;
}
// special cases
if (!insb && idxb == 0) {
// before everything
lower_.insert(lower_.begin(), a);
upper_.insert(upper_.begin(), b);
last_index = 0;
continue; // done
} else if (!insa && idxa == int(lower_.size()) - 1) {
// after everything
lower_.push_back(a);
upper_.push_back(b);
last_index = lower_.size() - 1;
continue; // done
}
if (!insa) {
++idxa;
}
if (!insb) {
--idxb;
}
if (idxa > idxb) {
// new interval between existing
//assert(int(lower_.size()) > idxa);
lower_.insert(lower_.begin() + idxa, a);
upper_.insert(upper_.begin() + idxa, b);
last_index = idxa;
continue; // done
}
// update interval boundaries
lower_[idxa] = std::min(lower_[idxa], a);
upper_[idxb] = std::max(upper_[idxb], b);
// general case
lower_.erase(lower_.begin() + idxa + 1, lower_.begin() + idxb + 1);
upper_.erase(upper_.begin() + idxa, upper_.begin() + idxb);
last_index = idxb - idxa - 1;
}
}
}
/*!
* \param other interval list
*/
void IntervalList::merge(const IntervalList& other) {
// find starting point
if (other.empty()) {
return;
}
int last_index = 0;
// other interval list
const std::vector<unsigned>& o_lower = other.get_lower();
const std::vector<unsigned>& o_upper = other.get_upper();
const std::vector<char>& o_exact = other.get_exact();
//assert((o_lower.size() == o_upper.size()) && (o_lower.size() == o_exact.size()));
// if this list is empty, just copy other list
if (empty()) {
std::copy(o_lower.begin(), o_lower.end(), std::back_inserter(lower_));
std::copy(o_upper.begin(), o_upper.end(), std::back_inserter(upper_));
std::copy(o_exact.begin(), o_exact.end(), std::back_inserter(exact_));
return;
} else {
// for each interval in other list, find relevant position to insert
unsigned a, b;
char ex;
int idxa, idxb;
bool insa, insb;
for (unsigned i = 0; i < o_lower.size(); ++i) {
a = o_lower[i], b = o_upper[i];
ex = o_exact[i];
insa = false, insb = false;
// determine idxa
if (a < lower_.front()) {
idxa = -1;
} else if (a > upper_.back()) {
idxa = upper_.size() - 1;
} else {
// no special case, perform binary search
int _min = last_index, _max = lower_.size(), _mid;
while (true) {
if (_min == _max) {
if (a < lower_[_min]) {
idxa = _min - 1; // immediately to the left
break;
} else {
idxa = _min; // included in interval, or immediately to the right
break;
}
}
_mid = (_max + _min) / 2;
if (lower_[_mid] <= a && a <= upper_[_mid]) {
idxa = _mid;
break;
} else if (a < lower_[_mid]) {
_max = _mid;
} else {
_min = _mid + 1;
}
}
}
idxb = idxa + 1;
/* distinguish 4 cases a,b between/within intervals */
// determine
// - index of interval containing or left of a, flag: inside
// - index of interval containing or right of b, flag: inside
if (idxa != -1 && a <= upper_[idxa] + 1) {
insa = true;
}
while (idxb < int(lower_.size()) && b >= lower_[idxb] - 1) {
++idxb;
}
if (idxb != 0 && b <= upper_[idxb - 1] + 1) {
insb = true;
--idxb;
} else {
insb = false;
}
// special cases
if (!insb && idxb == 0) {
// before everything
lower_.insert(lower_.begin(), a);
upper_.insert(upper_.begin(), b);
exact_.insert(exact_.begin(), ex);
last_index = 0;
continue; // done
} else if (!insa && idxa == int(lower_.size()) - 1) {
// after everything
lower_.push_back(a);
upper_.push_back(b);
exact_.push_back(ex);
last_index = lower_.size() - 1;
continue; // done
}
if (!insa) {
++idxa;
}
if (!insb) {
--idxb;
}
if (idxa > idxb) {
// new interval between existing
//assert(int(lower_.size()) > idxa);
lower_.insert(lower_.begin() + idxa, a);
upper_.insert(upper_.begin() + idxa, b);
exact_.insert(exact_.begin() + idxa, ex);
last_index = idxa;
continue; // done
}
// non-exact interval subsumed
if (!ex && insa && insb && idxa == idxb && lower_[idxa] <= a
&& b <= upper_[idxa]) {
last_index = idxa;
continue;
}
// update interval boundaries
lower_[idxa] = std::min(lower_[idxa], a);
upper_[idxb] = std::max(upper_[idxb], b);
// general case
assert(idxb <= int(lower_.size()));
lower_.erase(lower_.begin() + idxa + 1, lower_.begin() + idxb + 1);
upper_.erase(upper_.begin() + idxa, upper_.begin() + idxb);
char new_exact = ex;
if (ex) {
for (int i = idxa; i <= idxb; ++i) {
if (!exact_[i]) {
new_exact = 0;
break;
}
}
}
exact_[idxa] = new_exact;
exact_.erase(exact_.begin() + idxa + 1, exact_.begin() + idxb + 1);
last_index = std::max(0, idxa);
}
}
}