internal (ICoinsView toRemove, ICoinsView toAdd) Undo(uint256 txId)
{
lock (Lock)
{
var allCoins = AsAllCoinsViewNoLock();
var toRemove = new List <SmartCoin>();
var toAdd = new List <SmartCoin>();
// remove recursively the coins created by the transaction
foreach (SmartCoin createdCoin in allCoins.CreatedBy(txId))
{
toRemove.AddRange(Remove(createdCoin));
}
// destroyed (spent) coins are now (unspent)
foreach (SmartCoin destroyedCoin in allCoins.SpentBy(txId))
{
if (SpentCoins.Remove(destroyedCoin))
{
Coins.Add(destroyedCoin);
toAdd.Add(destroyedCoin);
}
}
InvalidateSnapshot = true;
return(new CoinsView(toRemove), new CoinsView(toAdd));
}
}
public void RemoveFromBlock(Height blockHeight)
{
lock (Lock)
{
var allCoins = AsAllCoinsViewNoLock();
foreach (var toRemove in allCoins.AtBlockHeight(blockHeight).ToList())
{
var coinsToRemove = allCoins.DescendantOfAndSelf(toRemove).ToList();
foreach (var coin in coinsToRemove)
{
if (coin.Unspent)
{
if (Coins.Remove(coin))
{
InvalidateSnapshot = true;
}
}
else
{
SpentCoins.Remove(toRemove);
}
}
}
}
}
private ICoinsView RemoveNoLock(SmartCoin coin)
{
var coinsToRemove = DescendantOfAndSelfNoLock(coin);
foreach (var toRemove in coinsToRemove)
{
if (!Coins.Remove(toRemove))
{
SpentCoins.Remove(toRemove);
}
var removedCoinOutPoint = toRemove.OutPoint;
// If we can find it in our outpoint to coins cache.
if (TryGetSpenderSmartCoinsByOutPointNoLock(removedCoinOutPoint, out var coinsByOutPoint))
{
// Go through all the coins of that cache where the coin is the coin we are wishing to remove.
foreach (var coinByOutPoint in coinsByOutPoint.Where(x => x == toRemove))
{
// Remove the coin from the set, and if the set becomes empty as a consequence remove the key too.
if (CoinsByOutPoint[removedCoinOutPoint].Remove(coinByOutPoint) && !CoinsByOutPoint[removedCoinOutPoint].Any())
{
CoinsByOutPoint.Remove(removedCoinOutPoint);
}
}
}
}
InvalidateSnapshot = true;
return(coinsToRemove);
}
public ICoinsView Remove(SmartCoin coin)
{
lock (Lock)
{
var coinsToRemove = DescendantOfAndSelfNoLock(coin);
foreach (var toRemove in coinsToRemove)
{
if (!Coins.Remove(toRemove))
{
if (SpentCoins.Remove(toRemove))
{
// Clusters.Remove(toRemove);
}
}
}
InvalidateSnapshot = true;
return(coinsToRemove);
}
}