// Append all of 'nc' onto the current NewChunk. Kill nc.
public void add(NewChunk nc) {
assert _cidx >= 0;
assert sparseLen() <= _len;
assert nc.sparseLen() <= nc._len : "_len = " + nc.sparseLen() + ", _len2 = " + nc._len;
if (nc._len == 0) return;
if (_len == 0) {
_ls = nc._ls;
nc._ls = null;
_xs = nc._xs;
nc._xs = null;
_id = nc._id;
nc._id = null;
_ds = nc._ds;
nc._ds = null;
_is = nc._is;
nc._is = null;
_ss = nc._ss;
nc._ss = null;
set_sparseLen(nc.sparseLen());
set_len(nc._len);
return;
}
if (nc.sparse() != sparse()) { // for now, just make it dense
cancel_sparse();
nc.cancel_sparse();
}
if (_ds != null) throw H2O.fail();
while (sparseLen() + nc.sparseLen() >= _xs.length)
_xs = MemoryManager.arrayCopyOf(_xs, _xs.length << 1);
_ls = MemoryManager.arrayCopyOf(_ls, _xs.length);
System.arraycopy(nc._ls, 0, _ls, sparseLen(), nc.sparseLen());
System.arraycopy(nc._xs, 0, _xs, sparseLen(), nc.sparseLen());
if (_id != null) {
assert nc._id != null;
_id = MemoryManager.arrayCopyOf(_id, _xs.length);
System.arraycopy(nc._id, 0, _id, sparseLen(), nc.sparseLen());
for (int i = sparseLen(); i < sparseLen() + nc.sparseLen(); ++i) _id[i] += _len;
} else assert nc._id == null;
set_sparseLen(sparseLen() + nc.sparseLen());
set_len(_len + nc._len);
nc._ls = null;
nc._xs = null;
nc._id = null;
nc.set_sparseLen(nc.set_len(0));
assert sparseLen() <= _len;
}
// PREpend all of 'nc' onto the current NewChunk. Kill nc.
public void addr(NewChunk nc) {
long[] tmpl = _ls;
_ls = nc._ls;
nc._ls = tmpl;
int[] tmpi = _xs;
_xs = nc._xs;
nc._xs = tmpi;
tmpi = _id;
_id = nc._id;
nc._id = tmpi;
double[] tmpd = _ds;
_ds = nc._ds;
nc._ds = tmpd;
int tmp = _sparseLen;
_sparseLen = nc._sparseLen;
nc._sparseLen = tmp;
tmp = _len;
_len = nc._len;
nc._len = tmp;
add(nc);
}