namespace Apache.Arrow.Scalars.Variant { internal static class VariantEncodingHelper { public const int MetadataVersion = 1; public static VariantBasicType GetBasicType(byte header); public static int GetValueHeader(byte header); public static byte MakeValueHeader(VariantBasicType basicType, int valueHeader); public static VariantPrimitiveType GetPrimitiveType(byte header); public static byte MakePrimitiveHeader(VariantPrimitiveType primitiveType); public static int GetShortStringLength(byte header); public static byte MakeShortStringHeader(int length); public static byte MakeObjectHeader(int fieldIdSize, int offsetSize, bool isLarge); public static void ParseObjectHeader(byte header, out int fieldIdSize, out int offsetSize, out bool isLarge); public static byte MakeArrayHeader(int offsetSize, bool isLarge); public static void ParseArrayHeader(byte header, out int offsetSize, out bool isLarge); public static void ParseMetadataHeader(byte header, out int version, out bool sortedStrings, out int offsetSize); public static byte MakeMetadataHeader(bool sortedStrings, int offsetSize); public static int ReadLittleEndianInt(ReadOnlySpan<byte> span, int byteWidth); public static void WriteLittleEndianInt(Span<byte> span, int value, int byteWidth); public static int ByteWidthForValue(int value); } }