private bool CheckStorageContext(StorageContext context)
{
ContractState contract = contracts.TryGet(context.ScriptHash);
if (contract == null)
{
return(false);
}
if (!contract.HasStorage)
{
return(false);
}
return(true);
}
protected override bool Blockchain_GetAsset(ExecutionEngine engine)
{
UInt256 hash = new UInt256(engine.EvaluationStack.Pop().GetByteArray());
AssetState asset = assets.TryGet(hash);
if (asset == null)
{
return(false);
}
engine.EvaluationStack.Push(StackItem.FromInterface(asset));
return(true);
}
protected override bool Storage_Get(ExecutionEngine engine)
{
StorageContext context = engine.EvaluationStack.Pop().GetInterface <StorageContext>();
if (!CheckStorageContext(context))
{
return(false);
}
byte[] key = engine.EvaluationStack.Pop().GetByteArray();
StorageItem item = storages.TryGet(new StorageKey
{
ScriptHash = context.ScriptHash,
Key = key
});
engine.EvaluationStack.Push(item?.Value ?? new byte[0]);
return(true);
}