prog8/docs/source/todo.rst
2020-03-13 00:50:30 +01:00

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====
TODO
====
- option to load library files from a directory instead of the embedded ones
- exit('message', returncode) function to immediately exit the program with this message (restores stack)
- fix stack clobbering issue in postincr decr (see the arithmetic example of this)
- vector inc/dec/add/sub/lsl/asl/mul/div
Memory Block Operations integrated in language?
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
array/string memory block operations?
- array operations
copy (from another array with the same length), shift-N(left,right), rotate-N(left,right)
clear (set whole array to the given value, default 0)
- array operations ofcourse work identical on vars and on memory mapped vars of these types.
- strings: identical operations as on array.
For now, we have the ``memcopy`` and ``memset`` builtin functions.
More optimizations
^^^^^^^^^^^^^^^^^^
Add more compiler optimizations to the existing ones.
- on the language AST level
- on the final assembly source level
- can the parameter passing to subroutines be optimized to avoid copying?
- working subroutine inlining (taking care of vars and identifier refs to them)
Also some library routines and code patterns could perhaps be optimized further
Eval stack redesign? (lot of work)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
The eval stack is now a split lsb/msb stack using X as the stackpointer.
Is it easier/faster to just use a single page unsplit stack?
It could then even be moved into the zeropage to greatly reduce code size and slowness.
Or just move the LSB portion into a slab of the zeropage.
Allocate a fixed word in ZP that is the TOS so we can always operate on TOS directly
without having to to index into the stack?
Bugs
^^^^
Ofcourse there are still bugs to fix ;)
Misc
^^^^
Several ideas were discussed on my reddit post
https://www.reddit.com/r/programming/comments/alhj59/creating_a_programming_language_and_cross/