rosella

Author	SHA1	Message	Date
Jesse D. McDonald	b899f0c3b0	Implement support for (call/cc), and shorthand form (let/cc). Adds support for non-local returns, among other control-flow structures.	2012-07-14 13:44:35 -05:00
Jesse D. McDonald	14b2a1570a	Add support for (quote) literal forms in compiler.ss.	2012-07-14 13:44:33 -05:00
Jesse D. McDonald	0b0b352dd6	Clean up handling of (let) and (%bind), plus misc. cleanup. With this change, any (%bind) returned from (simplify-let) or (simplify-form) can be assumed to be flat, with unique bound symbols. Before, this was only true of (%lambda) forms and the output of (compile).	2012-07-14 13:44:30 -05:00
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