void IInteroperable.FromStackItem(StackItem stackItem)
{
Array array = (Array)stackItem;
Id = (int)array[0].GetInteger();
UpdateCounter = (ushort)array[1].GetInteger();
Hash = new UInt160(array[2].GetSpan());
Nef = array[3].GetSpan().AsSerializable <NefFile>();
Manifest = array[4].ToInteroperable <ContractManifest>();
}
void IInteroperable.FromReplica(IInteroperable replica)
{
ContractState from = (ContractState)replica;
Id = from.Id;
UpdateCounter = from.UpdateCounter;
Hash = from.Hash;
Nef = from.Nef;
Manifest = from.Manifest;
}
/// <summary>
/// Compute checksum for a file
/// </summary>
/// <param name="file">File</param>
/// <returns>Return checksum</returns>
unsafe public static uint ComputeChecksum(NefFile file)
{
Span <byte> header = stackalloc byte[HeaderSize];
fixed(byte *p = header)
using (UnmanagedMemoryStream ms = new UnmanagedMemoryStream(p, HeaderSize, HeaderSize, FileAccess.Write))
using (BinaryWriter wr = new BinaryWriter(ms, Utility.StrictUTF8, false))
{
file.SerializeHeader(wr);
wr.Flush();
}
return(BitConverter.ToUInt32(Crypto.Hash256(header), 0));
}
/// <summary>
/// Compute checksum for a file
/// </summary>
/// <param name="file">File</param>
/// <returns>Return checksum</returns>
public static uint ComputeChecksum(NefFile file)
{
using (var ms = new MemoryStream())
using (var wr = new BinaryWriter(ms))
{
file.Serialize(wr);
wr.Flush();
// Read header without CRC
var buffer = new byte[HeaderSize - sizeof(uint)];
ms.Seek(0, SeekOrigin.Begin);
ms.Read(buffer, 0, buffer.Length);
return(BitConverter.ToUInt32(buffer.Sha256(), 0));
}
}
/// <summary>
/// Compute checksum for a file
/// </summary>
/// <param name="file">File</param>
/// <returns>Return checksum</returns>
public static uint ComputeChecksum(NefFile file)
{
return(BitConverter.ToUInt32(Crypto.Hash256(file.ToArray().AsSpan(..^ sizeof(int)))));
}
/// <summary>
/// Computes the checksum for the specified nef file.
/// </summary>
/// <param name="file">The specified nef file.</param>
/// <returns>The checksum of the nef file.</returns>
public static uint ComputeChecksum(NefFile file)
{
return(BinaryPrimitives.ReadUInt32LittleEndian(Crypto.Hash256(file.ToArray().AsSpan(..^ sizeof(uint)))));
}
