GetGenerationHandle()

Handle System.Reflection.Metadata.Ecma335.MetadataAggregator.GetGenerationHandle ( Handle handle, out int generation )

inline

Definition at line 184 of file MetadataAggregator.cs.

    {
        if (handle.IsVirtual)
        {
            throw new NotSupportedException();
        }
        if (handle.IsHeapHandle)
        {
            int offset = handle.Offset;
            MetadataTokens.TryGetHeapIndex(handle.Kind, out var index);
            ImmutableArray<int> array = _heapSizes[(int)index];
            int num = ((handle.Type == 114) ? (offset - 1) : offset);
            generation = array.BinarySearch(num);
            if (generation >= 0)
            {
                do
                {
                    generation++;
                }
                while (generation < array.Length && array[generation] == num);
            }
            else
            {
                generation = ~generation;
            }
            if (generation >= array.Length)
            {
                throw new ArgumentException(System.SR.HandleBelongsToFutureGeneration, "handle");
            }
            int value = ((handle.Type == 114 || generation == 0) ? offset : (offset - array[generation - 1]));
            return new Handle((byte)handle.Type, value);
        }
        int rowId = handle.RowId;
        ImmutableArray<RowCounts> array2 = _rowCounts[(int)handle.Type];
        generation = array2.BinarySearch(new RowCounts
        {
            AggregateInserts = rowId
        });
        if (generation >= 0)
        {
            while (generation > 0 && array2[generation - 1].AggregateInserts == rowId)
            {
                generation--;
            }
        }
        else
        {
            generation = ~generation;
            if (generation >= array2.Length)
            {
                throw new ArgumentException(System.SR.HandleBelongsToFutureGeneration, "handle");
            }
        }
        int value2 = ((generation == 0) ? rowId : (rowId - array2[generation - 1].AggregateInserts + array2[generation].Updates));
        return new Handle((byte)handle.Type, value2);
    }

References System.Reflection.Metadata.Ecma335.MetadataAggregator._heapSizes, System.Reflection.Metadata.Ecma335.MetadataAggregator._rowCounts, System.array, System.handle, System.SR.HandleBelongsToFutureGeneration, System.index, System.offset, System.Reflection.Metadata.Ecma335.MetadataTokens.TryGetHeapIndex(), and System.value.