8 Commits

Author	SHA1	Message	Date
Edwin Brady	e69c1529d9	Bitwise operators	2020-01-31 16:25:19 +00:00
Edwin Brady	854e39936e	Some Data.Buffer bits ... Need to know length of strings in bytes sometimes, not just characters, to check we have enough space. Also add copyData	2020-01-30 18:36:59 +00:00
Edwin Brady	78e44a4353	Reading/writing buffers can fail ... So, make them return and Either and wrap the scheme definitions in an exception handler that returns an error code on failure	2019-09-28 18:33:46 +01:00
Edwin Brady	bf69b89b0d	Support for buffers and file erros in Racket CG	2019-09-28 18:10:14 +01:00
Edwin Brady	bb246a072a	Experimenting with a new FFI ... Functions can be declared as %foreign with a list of calling conventions, which a backend will work through until it finds one it can understand. Currently implemented only in Chez backend. If this works out, I'll implement it for Racket too, and remove the old primitive functions. There's a bit more boiler plate here than before, but it has the benefit of being more extensible and portable between different back ends. Some examples, pending proper documentation: %foreign "C:puts,libc" "scheme:display" putline : String -> PrimIO () %foreign "C:exp, libm.so.6, math.h" fexp : Double -> Double %foreign "C:initscr, ncurses_glue.so, ncurses.h" prim_initscr : PrimIO ()	2019-09-02 17:10:48 +01:00
Edwin Brady	2bb496f74b	Chapter 11 examples now working	2019-07-08 23:46:20 +02:00
Edwin Brady	4ab543b83d	A bit more library support, for Chapter 9 ... Also a tweak to errors when compiling to scheme, so that it properly reports an error then quits if it's supposed to crash.	2019-07-05 17:24:15 +01:00
Edwin Brady	0fa61f7c4f	Add compiler support files	2019-06-02 17:31:59 +01:00