private static bool Storage_Find(ApplicationEngine engine)
{
if (engine.CurrentContext.EvaluationStack.Pop() is InteropInterface _interface)
{
StorageContext context = _interface.GetInterface <StorageContext>();
if (!CheckStorageContext(engine, context))
{
return(false);
}
byte[] prefix = engine.CurrentContext.EvaluationStack.Pop().GetByteArray();
byte[] prefix_key;
using (MemoryStream ms = new MemoryStream())
{
int index = 0;
int remain = prefix.Length;
while (remain >= 16)
{
ms.Write(prefix, index, 16);
ms.WriteByte(0);
index += 16;
remain -= 16;
}
if (remain > 0)
{
ms.Write(prefix, index, remain);
}
prefix_key = context.ScriptHash.ToArray().Concat(ms.ToArray()).ToArray();
}
StorageIterator iterator = engine.AddDisposable(new StorageIterator(engine.Snapshot.Storages.Find(prefix_key).Where(p => p.Key.Key.Take(prefix.Length).SequenceEqual(prefix)).GetEnumerator()));
engine.CurrentContext.EvaluationStack.Push(StackItem.FromInterface(iterator));
return(true);
}
return(false);
}
protected internal IIterator Find(StorageContext context, byte[] prefix)
{
byte[] prefix_key = StorageKey.CreateSearchPrefix(context.Id, prefix);
StorageIterator iterator = new StorageIterator(Snapshot.Storages.Find(prefix_key).Where(p => p.Key.Key.AsSpan().StartsWith(prefix)).GetEnumerator());
Disposables.Add(iterator);
return(iterator);
}
protected virtual bool Storage_Find(ExecutionEngine engine)
{
if (engine.EvaluationStack.Pop() is InteropInterface _interface)
{
StorageContext context = _interface.GetInterface <StorageContext>();
if (!CheckStorageContext(context))
{
return(false);
}
byte[] prefix = engine.EvaluationStack.Pop().GetByteArray();
prefix = context.ScriptHash.ToArray().Concat(prefix).ToArray();
StorageIterator iterator = new StorageIterator(Storages.Find(prefix).GetEnumerator());
engine.EvaluationStack.Push(StackItem.FromInterface(iterator));
disposables.Add(iterator);
return(true);
}
return(false);
}