private bool Contract_Storage_Put()
{
if (!(CurrentContext.EvaluationStack.Pop() is InteropInterface _interface))
{
return(false);
}
TestStorageContext context = _interface.GetInterface <TestStorageContext>();
byte[] key = CurrentContext.EvaluationStack.Pop().GetByteArray();
byte[] value = CurrentContext.EvaluationStack.Pop().GetByteArray();
return(PutEx(context, key, value, StorageFlags.None));
}
private bool PutEx(TestStorageContext context, byte[] key, byte[] value, StorageFlags flags)
{
if (key.Length > MaxStorageKeySize)
{
return(false);
}
if (value.Length > MaxStorageValueSize)
{
return(false);
}
if (context.IsReadOnly)
{
return(false);
}
StorageKey skey = new StorageKey
{
ScriptHash = context.ScriptHash,
Key = key
};
if (Storages.TryGetValue(skey, out var item) && item.IsConstant == true)
{
return(false);
}
if (value.Length == 0 && !flags.HasFlag(StorageFlags.Constant))
{
// If put 'value' is empty (and non-const), we remove it (implicit `Storage.Delete`)
Storages.Remove(skey);
}
else
{
item = Storages[skey] = new StorageItem();
item.Value = value;
item.IsConstant = flags.HasFlag(StorageFlags.Constant);
}
return(true);
}
private bool Contract_Storage_Get()
{
if (CurrentContext.EvaluationStack.Pop() is InteropInterface _interface)
{
TestStorageContext context = _interface.GetInterface <TestStorageContext>();
byte[] key = CurrentContext.EvaluationStack.Pop().GetByteArray();
if (Storages.TryGetValue(new StorageKey
{
ScriptHash = context.ScriptHash,
Key = key
}, out var item))
{
CurrentContext.EvaluationStack.Push(item.Value);
}
else
{
CurrentContext.EvaluationStack.Push(new byte[0]);
}
return(true);
}
return(false);
}
private bool Contract_Storage_Delete()
{
if (CurrentContext.EvaluationStack.Pop() is InteropInterface _interface)
{
TestStorageContext context = _interface.GetInterface <TestStorageContext>();
if (context.IsReadOnly)
{
return(false);
}
StorageKey key = new StorageKey
{
ScriptHash = context.ScriptHash,
Key = CurrentContext.EvaluationStack.Pop().GetByteArray()
};
if (Storages.TryGetValue(key, out var item) && item.IsConstant == true)
{
return(false);
}
Storages.Remove(key);
return(true);
}
return(false);
}
