A JavaScript implementation, running on the Rubinius VM.
Given eg/nest.js:
function a(n) {
n = n + 4;
function b(n) {
n = n + 5;
return n * 2;
}
return n + b(7);
}
print(a(3));
Run:
bin/capuchin eg/nest.js
And you'll see:
(Loads of debug information that I haven't turned off yet, and...)
31
(Which isn't very exciting, but is correct, and demonstrates that the
inner n parameter correctly shadows the outer.)
Alternatively, run something more interesting, and then fix whatever breaks.