No such global error when trying to write a closure

[martin-t]

Code:

function f() -> begin
    let local = 123;
    let o = object begin
        function m() -> local;
    end;
    o.m();
end;

f();

Error:

thread 'main' panicked at 'Interpreter error: Error evaluating get global #3:

Caused by:
    No such global `local`.', src/main.rs:141:14

I guess FML doesn't support closures but it should probably error when compiling, not interpreting.

[kondziu]

I have a practical argument against doing it. Let's start with the fact that this is correct:

function f() -> begin
    let local = 123;
    let o = object begin
        function m() -> local;
    end;
    o.m();
end;

let local = 5;

f();

I order to detect that there is a global used in m that is declared later on, there would have to be a whole separate compiler pass to detect this. It's probably not worth the effort.