public static StackItem Deserialize(BinaryReader reader, uint maxArraySize, uint maxItemSize, ReferenceCounter referenceCounter)
{
Stack <StackItem> deserialized = new Stack <StackItem>();
int undeserialized = 1;
while (undeserialized-- > 0)
{
StackItemType type = (StackItemType)reader.ReadByte();
switch (type)
{
case StackItemType.Any:
deserialized.Push(StackItem.Null);
break;
case StackItemType.Boolean:
deserialized.Push(reader.ReadBoolean());
break;
case StackItemType.Integer:
deserialized.Push(new BigInteger(reader.ReadVarBytes(Integer.MaxSize)));
break;
case StackItemType.ByteString:
deserialized.Push(reader.ReadVarBytes((int)maxItemSize));
break;
case StackItemType.Buffer:
Buffer buffer = new Buffer((int)reader.ReadVarInt(maxItemSize));
reader.FillBuffer(buffer.InnerBuffer);
deserialized.Push(buffer);
break;
case StackItemType.Array:
case StackItemType.Struct:
{
int count = (int)reader.ReadVarInt(maxArraySize);
deserialized.Push(new ContainerPlaceholder(type, count));
undeserialized += count;
}
break;
case StackItemType.Map:
{
int count = (int)reader.ReadVarInt(maxArraySize);
deserialized.Push(new ContainerPlaceholder(type, count));
undeserialized += count * 2;
}
break;
default:
throw new FormatException();
}
}
Stack <StackItem> stack_temp = new Stack <StackItem>();
while (deserialized.Count > 0)
{
StackItem item = deserialized.Pop();
if (item is ContainerPlaceholder placeholder)
{
switch (placeholder.Type)
{
case StackItemType.Array:
Array array = new Array(referenceCounter);
for (int i = 0; i < placeholder.ElementCount; i++)
{
array.Add(stack_temp.Pop());
}
item = array;
break;
case StackItemType.Struct:
Struct @struct = new Struct(referenceCounter);
for (int i = 0; i < placeholder.ElementCount; i++)
{
@struct.Add(stack_temp.Pop());
}
item = @struct;
break;
case StackItemType.Map:
Map map = new Map(referenceCounter);
for (int i = 0; i < placeholder.ElementCount; i++)
{
StackItem key = stack_temp.Pop();
StackItem value = stack_temp.Pop();
map[(PrimitiveType)key] = value;
}
item = map;
break;
}
}
stack_temp.Push(item);
}
return(stack_temp.Peek());
}
private StackItem DeserializeStackItem(BinaryReader reader, ExecutionEngine engine, uint maxItemSize)
{
Stack <StackItem> deserialized = new Stack <StackItem>();
int undeserialized = 1;
while (undeserialized-- > 0)
{
StackItemType type = (StackItemType)reader.ReadByte();
switch (type)
{
case StackItemType.ByteArray:
deserialized.Push(new ByteArray(reader.ReadVarBytes((int)maxItemSize)));
break;
case StackItemType.Boolean:
deserialized.Push(new VMBoolean(reader.ReadBoolean()));
break;
case StackItemType.Integer:
deserialized.Push(new Integer(new BigInteger(reader.ReadVarBytes(ExecutionEngine.MaxSizeForBigInteger))));
break;
case StackItemType.Array:
case StackItemType.Struct:
{
int count = (int)reader.ReadVarInt(engine.MaxArraySize);
deserialized.Push(new ContainerPlaceholder
{
Type = type,
ElementCount = count
});
undeserialized += count;
}
break;
case StackItemType.Map:
{
int count = (int)reader.ReadVarInt(engine.MaxArraySize);
deserialized.Push(new ContainerPlaceholder
{
Type = type,
ElementCount = count
});
undeserialized += count * 2;
}
break;
default:
throw new FormatException();
}
}
Stack <StackItem> stack_temp = new Stack <StackItem>();
while (deserialized.Count > 0)
{
StackItem item = deserialized.Pop();
if (item is ContainerPlaceholder placeholder)
{
switch (placeholder.Type)
{
case StackItemType.Array:
VMArray array = new VMArray();
for (int i = 0; i < placeholder.ElementCount; i++)
{
array.Add(stack_temp.Pop());
}
item = array;
break;
case StackItemType.Struct:
Struct @struct = new Struct();
for (int i = 0; i < placeholder.ElementCount; i++)
{
@struct.Add(stack_temp.Pop());
}
item = @struct;
break;
case StackItemType.Map:
Map map = new Map();
for (int i = 0; i < placeholder.ElementCount; i++)
{
StackItem key = stack_temp.Pop();
StackItem value = stack_temp.Pop();
map.Add(key, value);
}
item = map;
break;
}
}
stack_temp.Push(item);
}
return(stack_temp.Peek());
}