[Vm-dev] Simulator Question

[Igor Stasenko]

On 6 January 2011 16:41, Gabriel Hernán Barbuto <gbarbuto at gmail.com> wrote:
>
> Hi
>
> I am working with the InterpreterSimulator and I would like to send a
> message to an object inside the simulated environment. For example, I
> have the oop for true and I want to send it the message printString.
>
> My question is if this is possible. I don't know if there is a way to
> send a message to an object inside the simulation. I have thought
> about tinkering with the stack and calling an interpreter method. But
> I am not sure if this will work.
>

Hi, Gabriel.
The problem is, that even if you prepare a context and all arguments
for message send,
you should start interpreting the code and then leave the interpret
loop once you received the answer.
But if you look at #interpret method, there is an infinite loop,
and no way how to escape it.

I don't know if there is a way to tell simulator to leave the loop at
certain point.


P.S. In general, it would be cool to have something like:

sqInt interpreter_call( sqInt receiver , sqInt selector , sqInt * arguments )

means: send message to receiver and return the answer.

Unfortunately, Squeak VM does not provides such things, in contrast to
languages like Lua,
which providing C interoperability layer by default from very
beginning of it existence.

> Any hint will be much appreciated. Thanks in advance.
>
> Gabriel
>


-- 
Best regards,
Igor Stasenko AKA sig.