mjb/altos/src/scheme, branch 1.8.3

altos/scheme: Allow ao_scheme_read_eval_print to be restarted

2017-12-11T20:20:25+00:00

Reset exceptions at the top so that we can call it more than once. Signed-off-by: Keith Packard

altos/scheme: Add Makefile for scheme test app

2017-12-11T20:20:25+00:00

Signed-off-by: Keith Packard

altos/scheme: Make test scheme app heap maximum size

2017-12-11T20:20:25+00:00

It's only 32kB. Signed-off-by: Keith Packard

altos/scheme: Make eqv? work for numbers and strings

2017-12-11T20:20:25+00:00

Large numbers, floats and strings need a value check, not just a comparison between ao_polys Signed-off-by: Keith Packard

altos/scheme: Stash cons across value allocation in compare

2017-12-11T20:20:25+00:00

Large ints, strings and floats can cause allocation, requiring that the 'cons' pointer be stashed and retrieved in case it moved. Signed-off-by: Keith Packard

altos/scheme: add list-copy

2017-12-11T20:20:25+00:00

A lot easier as a built-in; the obvious scheme version is recursive. Signed-off-by: Keith Packard

altos/scheme: Use 64-bit ints to track memory allocation stats

2017-12-11T20:20:25+00:00

These are only collected for debug purposes, but can get quite large if the interpreter runs for a while. Signed-off-by: Keith Packard

altos/scheme: Add a bunch of string and vector builtins

2017-12-11T20:20:25+00:00

Just make the language closer to r7rs Signed-off-by: Keith Packard

altos/scheme: Avoid crashing with non-list in length

2017-12-10T08:02:34+00:00

Use ao_scheme_cons_cdr to fetch the next list element as that returns NULL for non-cons elements. Signed-off-by: Keith Packard

altos/scheme: Add vectors

2017-12-10T08:02:00+00:00

Constant time and smaller can be a feature. Signed-off-by: Keith Packard