public static byte[] BuildPrefix(this EntryPrefix prefix)
{
var bytes = new byte[2];
var number = (short)prefix;
bytes[0] = (byte)(number >> 0 & 0xff);
bytes[1] = (byte)(number >> 8 & 0xff);
return(bytes);
}
public static byte[] BuildPrefix(this EntryPrefix prefix, params UInt256[] keys)
{
if (keys.Length == 0)
{
throw new ArgumentOutOfRangeException(nameof(keys));
}
var buffer = keys.Select(k => k.ToBytes() as IEnumerable <byte>).Flatten();
return(BuildPrefix(prefix, buffer));
}
public static bool Matches(this EntryPrefix prefix, byte[] key)
{
if (key.Length < 2)
{
return(false);
}
var number = (short)prefix;
return(key[0] == (byte)(number >> 0 & 0xff) && key[1] == (byte)(number >> 8 & 0xff));
}
public static byte[] BuildPrefix(this EntryPrefix prefix, byte[] key)
{
var length = key.Length;
var bytes = new byte[length + 2];
var number = (short)prefix;
bytes[0] = (byte)(number >> 0 & 0xff);
bytes[1] = (byte)(number >> 8 & 0xff);
Array.Copy(key, 0, bytes, 2, length);
return(bytes);
}
public static byte[] BuildPrefix(this EntryPrefix prefix, IEnumerable <byte> key)
{
var enumerable = key as byte[] ?? key.ToArray();
var length = enumerable.Length;
var bytes = new byte[length + 2];
var number = (short)prefix;
bytes[0] = (byte)(number >> 0 & 0xff);
bytes[1] = (byte)(number >> 8 & 0xff);
Array.Copy(enumerable.ToArray(), 0, bytes, 2, length);
return(bytes);
}
public static byte[] BuildPrefix(this EntryPrefix prefix, uint key)
{
var bytes = new byte[2 + 4];
var number = (short)prefix;
bytes[0] = (byte)(number >> 0 & 0xff);
bytes[1] = (byte)(number >> 8 & 0xff);
bytes[2] = (byte)((key >> 0) & 0xff);
bytes[3] = (byte)((key >> 8) & 0xff);
bytes[4] = (byte)((key >> 16) & 0xff);
bytes[5] = (byte)((key >> 24) & 0xff);
return(bytes);
}
public static byte[] BuildPrefix(this EntryPrefix prefix, ulong key)
{
var bytes = new byte[2 + 8];
var number = (short)prefix;
bytes[0] = (byte)(number >> 0 & 0xff);
bytes[1] = (byte)(number >> 8 & 0xff);
bytes[2] = (byte)((key >> 0) & 0xff);
bytes[3] = (byte)((key >> 8) & 0xff);
bytes[4] = (byte)((key >> 16) & 0xff);
bytes[5] = (byte)((key >> 24) & 0xff);
bytes[6] = (byte)((key >> 32) & 0xff);
bytes[7] = (byte)((key >> 40) & 0xff);
bytes[8] = (byte)((key >> 48) & 0xff);
bytes[9] = (byte)((key >> 56) & 0xff);
return(bytes);
}
public static byte[] BuildPrefix(this EntryPrefix prefix, UInt160 key)
{
return(BuildPrefix(prefix, key.ToBytes()));
}
public static byte[] BuildPrefix(this EntryPrefix prefix, UInt256 value, uint key)
{
return(prefix.BuildPrefix(value).Concat(key.ToBytes()).ToArray());
}
public static byte[] BuildPrefix(this EntryPrefix prefix, string key)
{
return(BuildPrefix(prefix, Encoding.ASCII.GetBytes(key)));
}
