public byte[] ReadStorage(byte[] key)
{
// If we already have cached storage data, return it. Otherwise we'll need to cache some.
if (!StorageCache.TryGetValue(key, out var val))
{
// We obtain the value from our storage trie, cache it, and decode it, as it's RLP encoded.
byte[] value = StorageTrie.Get(key);
if (value == null)
{
val = null;
}
else
{
val = RLP.Decode(value);
}
StorageCache[key] = val;
}
// Return our storage key.
return(val);
}
public void CommitStorageChanges()
{
// For each storage cache item, we want to flush those changes to the main trie/database.
foreach (var key in StorageCache.Keys)
{
// If the value is null, it means the value is non existent anymore, so we remove the key value pair
if (StorageCache[key] == null)
{
StorageTrie.Remove(key);
}
else
{
// Otherwise we set the new value.
StorageTrie.Set(key, RLP.Encode(StorageCache[key]));
}
}
// Now we clear our cache.
StorageCache.Clear();
// And update our account's storage root hash.
StorageRoot = StorageTrie.GetRootNodeHash();
}