Antlr4.Runtime.Sharpen.BitSet.Or C# (CSharp) Метод

        public void Or(BitSet set)
        {
            if (set == null)
                throw new ArgumentNullException("set");

            if (set._data.Length > _data.Length)
                Array.Resize(ref _data, set._data.Length);

            for (int i = 0; i < set._data.Length; i++)
                _data[i] |= set._data[i];
        }

 public BitSet GetAncestors(int rule)
 {
     BitSet ancestors = new BitSet();
     ancestors.Or(parents[rule]);
     while (true)
     {
         int cardinality = ancestors.Cardinality();
         for (int i = ancestors.NextSetBit(0); i >= 0; i = ancestors.NextSetBit(i + 1))
         {
             ancestors.Or(parents[i]);
         }
         if (ancestors.Cardinality() == cardinality)
         {
             // nothing changed
             break;
         }
     }
     return ancestors;
 }