public override object ParseFromStorage(StorageManager storageManager, StorageLocation storageLocation, IJsonRpcClient rpcClient = null)
{
// Create our result array
var results = new List <MappingKeyValuePair>();
// We'll want to loop for every key in storage at this point
var storage = storageManager.ExecutionTrace.Tracepoints[storageManager.TraceIndex].Storage;
foreach (Memory <byte> storageKey in storage.Keys)
{
// Define our current key (in case we must iterate upward through children to reach this mapping).
Memory <byte> currentStorageKey = storageKey;
// The point from which we will iterate/recursive upwards on.
IterateNested:
// Try to obtain a preimage from this key
var storageKeyPreimage = rpcClient?.GetHashPreimage(currentStorageKey.ToArray())?.Result;
if (storageKeyPreimage != null)
{
// Verify our pre-image is 2 WORDs in length.
if (storageKeyPreimage.Length == UInt256.SIZE * 2)
{
// If so, slice the latter WORD (parent location) and compare it to our current storage location
var derivedBaseLocation = storageKeyPreimage.Slice(UInt256.SIZE);
if (storageLocation.SlotKey.Span.SequenceEqual(derivedBaseLocation))
{
// Obtain our value hashed with our parent location (original key to our mapping).
byte[] originalStorageKeyData = storageKeyPreimage.Slice(0, UInt256.SIZE);
// Obtain our key and value's variable-value-pair.
StateVariable storageKeyVariable = new StateVariable($"K[{results.Count}]", KeyTypeString);
StateVariable storageValueVariable = new StateVariable($"V[{results.Count}]", ValueTypeString);
// Obtain our resulting key-value pair.
var keyValuePair = new MappingKeyValuePair(
new VariableValuePair(storageKeyVariable, storageKeyVariable.ValueParser.ParseData(originalStorageKeyData)),
new VariableValuePair(storageValueVariable, storageValueVariable.ValueParser.ParseFromStorage(storageManager, new StorageLocation(currentStorageKey, 0), rpcClient)));
// Add our key-value pair to the results.
results.Add(keyValuePair);
}
else
{
// This derived location is not referencing this location. Iterate upward on it to determine if it's a child.
currentStorageKey = derivedBaseLocation;
goto IterateNested;
}
}
}
}
// Return our results array.
return(results.ToArray());
}
public virtual Task <byte[]> GetHashPreimage(byte[] hash)
{
return(_proxyClient.GetHashPreimage(hash));
}
