/// <summary>
/// Restore a <see cref="ForUtil"/> from a <see cref="DataInput"/>.
/// </summary>
internal ForUtil(DataInput @in)
{
int packedIntsVersion = @in.ReadVInt32();
PackedInt32s.CheckVersion(packedIntsVersion);
encodedSizes = new int[33];
encoders = new PackedInt32s.IEncoder[33];
decoders = new PackedInt32s.IDecoder[33];
iterations = new int[33];
for (int bpv = 1; bpv <= 32; ++bpv)
{
var code = @in.ReadVInt32();
var formatId = (int)((uint)code >> 5);
var bitsPerValue = (code & 31) + 1;
PackedInt32s.Format format = PackedInt32s.Format.ById(formatId);
if (Debugging.AssertsEnabled)
{
Debugging.Assert(format.IsSupported(bitsPerValue));
}
encodedSizes[bpv] = EncodedSize(format, packedIntsVersion, bitsPerValue);
encoders[bpv] = PackedInt32s.GetEncoder(format, packedIntsVersion, bitsPerValue);
decoders[bpv] = PackedInt32s.GetDecoder(format, packedIntsVersion, bitsPerValue);
iterations[bpv] = ComputeIterations(decoders[bpv]);
}
}