/** Copy the given entry and all entries shadowed by it to table */
private void copy(Entry e) {
if (e.sym != null) {
copy(e.shadowed);
int hash = e.sym.name.index & hashMask;
e.shadowed = table[hash];
table[hash] = e;
}
}
/** Double size of hash table. */
private void dble() {
assert shared == 0;
Entry[] oldtable = table;
Entry[] newtable = new Entry[oldtable.length * 2];
for (Scope s = this; s != null; s = s.next) {
if (s.table == oldtable) {
assert s == this || s.shared != 0;
s.table = newtable;
s.hashMask = newtable.length - 1;
}
}
for (int i = 0; i < newtable.length; i++) newtable[i] = sentinel;
for (int i = 0; i < oldtable.length; i++) copy(oldtable[i]);
}