private bool ChainGetBlock(ScriptEngine engine)
{
if (engine.EvaluationStack.Count < 1)
{
return(false);
}
StackItem x = engine.EvaluationStack.Pop();
byte[][] data = x.GetBytesArray();
List <Block> r = new List <Block>();
foreach (byte[] d in data)
{
switch (d.Length)
{
case sizeof(uint):
uint height = BitConverter.ToUInt32(d, 0);
if (Blockchain.Default != null)
{
r.Add(Blockchain.Default.GetBlock(height));
}
else if (height == 0)
{
r.Add(Blockchain.GenesisBlock);
}
else
{
r.Add(null);
}
break;
case 32:
UInt256 hash = new UInt256(d);
if (Blockchain.Default != null)
{
r.Add(Blockchain.Default.GetBlock(hash));
}
else if (hash == Blockchain.GenesisBlock.Hash)
{
r.Add(Blockchain.GenesisBlock);
}
else
{
r.Add(null);
}
break;
default:
return(false);
}
}
engine.EvaluationStack.Push(new StackItem(r.ToArray()));
return(true);
}
private bool ChainGetTx(ScriptEngine engine)
{
if (engine.EvaluationStack.Count < 1)
{
return(false);
}
StackItem x = engine.EvaluationStack.Pop();
Transaction[] r = x.GetBytesArray().Select(p => Blockchain.Default?.GetTransaction(new UInt256(p))).ToArray();
engine.EvaluationStack.Push(new StackItem(r));
return(true);
}