Jesse D. McDonald
6b51229c48
Raise an error if (set! ...) is applied to a form without a value.
...
Exception is (%tail-call ...) form, which is permitted simply because
(%tail-call ...) transfers control unidirectionally; the enclosing
(%set! ...) form wouldn't be run anyway.
2012-07-14 13:44:17 -05:00
Jesse D. McDonald
8e147f7989
Don't create extra lambdas when both results of (if ...) are trivial.
...
Also map () directly to %nil, and allow (%if ...) to provide a value to a set! form.
2012-07-14 13:44:05 -05:00
Jesse D. McDonald
46b18c07d6
Implement conversion to tail-call form (CPS).
...
Also add some basic optimizations concerning binding and setting
variables which will never be used.
2012-07-14 13:43:58 -05:00
Jesse D. McDonald
988d4264b2
Improve representation of tail-calls, and normalize primitive operations.
2012-07-14 13:43:45 -05:00
Jesse D. McDonald