public override IEnumerable <RegisterTransaction> GetAssets()
{
yield return(AntCoin);
ReadOptions options = new ReadOptions();
using (options.Snapshot = db.GetSnapshot())
{
int height;
foreach (Slice key in db.Find(options, SliceBuilder.Begin(DataEntryPrefix.IX_Asset), (k, v) => k))
{
UInt256 hash = new UInt256(key.ToArray().Skip(1).ToArray());
yield return((RegisterTransaction)GetTransaction(options, hash, out height));
}
}
}
public override IEnumerable <EnrollmentTransaction> GetEnrollments(IEnumerable <Transaction> others)
{
ReadOptions options = new ReadOptions();
using (options.Snapshot = db.GetSnapshot())
{
int height;
foreach (Slice key in db.Find(options, SliceBuilder.Begin(DataEntryPrefix.IX_Enrollment), (k, v) => k))
{
UInt256 hash = new UInt256(key.ToArray().Skip(1).Take(32).ToArray());
if (others.SelectMany(p => p.Inputs).Any(p => p.PrevHash == hash && p.PrevIndex == 0))
{
continue;
}
yield return((EnrollmentTransaction)GetTransaction(options, hash, out height));
}
}
foreach (EnrollmentTransaction tx in others.OfType <EnrollmentTransaction>())
{
yield return(tx);
}
}
public override TransactionOutput GetUnspent(UInt256 hash, ushort index)
{
ReadOptions options = new ReadOptions();
using (options.Snapshot = db.GetSnapshot())
{
UnspentCoinState state = db.TryGet <UnspentCoinState>(options, DataEntryPrefix.ST_Coin, hash);
if (state == null)
{
return(null);
}
if (index >= state.Items.Length)
{
return(null);
}
if (state.Items[index].HasFlag(CoinState.Spent))
{
return(null);
}
int height;
return(GetTransaction(options, hash, out height).Outputs[index]);
}
}
public override IEnumerable <ValidatorState> GetEnrollments(IEnumerable <Transaction> others)
{
Dictionary <ECPoint, ValidatorState> dictionary = new Dictionary <ECPoint, ValidatorState>();
ReadOptions options = new ReadOptions();
using (options.Snapshot = db.GetSnapshot())
{
foreach (ValidatorState validator in db.Find <ValidatorState>(options, DataEntryPrefix.ST_Validator))
{
dictionary.Add(validator.PublicKey, validator);
}
}
foreach (EnrollmentTransaction tx in others.OfType <EnrollmentTransaction>())
{
if (!dictionary.ContainsKey(tx.PublicKey))
{
dictionary.Add(tx.PublicKey, new ValidatorState
{
PublicKey = tx.PublicKey
});
}
}
return(dictionary.Values);
}