public static bool Transfer(UInt160 from, UInt160 to, BigInteger amount, object data)
{
if (!ValidateAddress(from) || !ValidateAddress(to))
{
throw new Exception("The parameters from and to SHOULD be 20-byte non-zero addresses.");
}
if (amount <= 0)
{
throw new Exception("The parameter amount MUST be greater than 0.");
}
if (!Runtime.CheckWitness(from) && !from.Equals(ExecutionEngine.CallingScriptHash))
{
throw new Exception("No authorization.");
}
if (AssetStorage.Get(from) < amount)
{
throw new Exception("Insufficient balance.");
}
if (from == to)
{
return(true);
}
AssetStorage.Reduce(from, amount);
AssetStorage.Increase(to, amount);
OnTransfer(from, to, amount);
// Validate payable
if (IsDeployed(to))
{
Contract.Call(to, "onPayment", new object[] { from, amount, data });
}
return(true);
}
public static BigInteger BalanceOf(UInt160 account)
{
if (!ValidateAddress(account))
{
throw new Exception("The parameters account SHOULD be a 20-byte non-zero address.");
}
return(AssetStorage.Get(account));
}
