grammar/interp.planes is a Planes interpreter
written in Planes. This page loads it into the JavaScript
interpreter and runs your program through it — two interpretive layers —
then runs the same program directly on the JavaScript interpreter,
and compares the two. The comparison is code, not eyesight: the verdict
below is computed.
v11.0 §136 ruled that this route gives the worst performance of any
implementation option. It has never carried a number. The
ratio below is that number, in this browser.
js/interp.mjs (not run yet)
interp.planes
(not run yet)
Press Run both ▸. The two panes are compared in code — this line reports what the comparison returned, never what it ought to return.