protected static UnspentCoin[] FindUnspentCoins(IEnumerable <UnspentCoin> unspents, UInt256 asset_id, Fixed8 amount)
{
unspents = unspents.Where(p => p.AssetId == asset_id);
UnspentCoin coin = unspents.FirstOrDefault(p => p.Value == amount);
if (coin != null)
{
return new[] { coin }
}
;
coin = unspents.OrderBy(p => p.Value).FirstOrDefault(p => p.Value > amount);
if (coin != null)
{
return new[] { coin }
}
;
Fixed8 sum = unspents.Sum(p => p.Value);
if (sum < amount)
{
return(null);
}
if (sum == amount)
{
return(unspents.ToArray());
}
return(unspents.OrderByDescending(p => p.Value).TakeWhile(p =>
{
if (amount == Fixed8.Zero)
{
return false;
}
amount -= Fixed8.Min(amount, p.Value);
return true;
}).ToArray());
}
private void ProcessNewBlock(Block block)
{
List <TransactionInput> spent = new List <TransactionInput>();
Dictionary <TransactionInput, UnspentCoin> unspent = new Dictionary <TransactionInput, UnspentCoin>();
lock (contracts)
{
foreach (Transaction tx in block.Transactions)
{
for (ushort index = 0; index < tx.Outputs.Length; index++)
{
TransactionOutput output = tx.Outputs[index];
if (contracts.ContainsKey(output.ScriptHash))
{
UnspentCoin coin = new UnspentCoin
{
Input = new TransactionInput
{
PrevHash = tx.Hash,
PrevIndex = index
},
AssetId = output.AssetId,
Value = output.Value,
ScriptHash = output.ScriptHash
};
unspent.Add(coin.Input, coin);
}
}
}
}
foreach (TransactionInput input in block.Transactions.SelectMany(p => p.GetAllInputs()))
{
if (unspent.ContainsKey(input))
{
unspent.Remove(input);
}
else
{
spent.Add(input);
}
}
lock (unspent_coins)
lock (change_coins)
{
foreach (TransactionInput input in spent)
{
unspent_coins.Remove(input);
change_coins.Remove(input);
}
foreach (var coin in unspent)
{
change_coins.Remove(coin.Key);
unspent_coins.Add(coin.Key, coin.Value);
}
}
current_height++;
if (spent.Count > 0 || unspent.Count > 0)
{
OnProcessNewBlock(spent, unspent.Values);
if (BalanceChanged != null)
{
BalanceChanged(this, EventArgs.Empty);
}
}
}