public static bool Transfer(UInt160 from, UInt160 to, BigInteger amount, object data = null)
{
if (IsPaused())
{
Error("System is paused.");
return(false);
}
if (IsBlacklisted(from))
{
Error("Argument from is in blacklist.");
return(false);
}
if (IsBlacklisted(to))
{
Error("Argument to is in blacklist.");
return(false);
}
if (amount <= 0)
{
Error("The parameter amount MUST be greater than 0.");
return(false);
}
if (!Runtime.CheckWitness(from))
{
Error("No authorization.");
return(false);
}
if (AssetStorage.Get(from) < amount)
{
Error("Insufficient balance.");
return(false);
}
if (from == to)
{
return(true);
}
AssetStorage.Reduce(from, amount);
AssetStorage.Increase(to, amount);
Transferred(from, to, amount);
if (ContractManagement.GetContract(to) != null)
{
Contract.Call(to, "onPayment", CallFlags.ReadOnly, new object[] { from, amount, data });
}
return(true);
}
public static bool Mint(UInt160 minterAccount, BigInteger amount)
{
if (IsPaused())
{
Error("System is paused.");
return(false);
}
if (amount <= 0)
{
Error("The parameter amount MUST be greater than 0.");
return(false);
}
if (!IsMinter() || !Runtime.CheckWitness(minterAccount))
{
Error("No authorization.");
return(false);
}
if (IsBlacklisted(minterAccount))
{
Error("Argument account is in blacklist.");
return(false);
}
var allowance = GetAllowance(minterAccount);
if (allowance < amount)
{
Error("Insufficient allowance.");
return(false);
}
TotalSupplyStorage.Increase(amount);
TotalAllowanceStorage.Reduce(amount);
AssetStorage.Increase(minterAccount, amount);
MinterStorage.ReduceAllowance(minterAccount, amount);
Transferred(null, minterAccount, amount);
return(true);
}
public static BigInteger BalanceOf(UInt160 account) => AssetStorage.Get(account);
