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80 lines
2.6 KiB
ReStructuredText
80 lines
2.6 KiB
ReStructuredText
====
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TODO
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====
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- implement the asm for bitshift on arrays (last missing assembly code generation)
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- remove statements after an exit() or return
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- fix warnings about that unreachable code?
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- add a compiler option to not include variable initialization code (useful if the program is expected to run only once, such as a game)
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the program will then rely solely on the values as they are in memory at the time of program startup.
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- create real assembly routines for the bresenham line and circle code
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- also add assembly routines in c64scr for drawing rectangles (filled/open)
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- add these routines for bitmap screen modes as well
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- add a turtle example once we have highres drawing routines
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- aliases for imported symbols for example perhaps '%alias print = c64scr.print'
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- option to load library files from a directory instead of the embedded ones
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Memory Block Operations integrated in language?
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^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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array/string memory block operations?
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- vector inc/dec/add/sub/mul/div...? (on array or string):
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``arrayvar++ / arrayvar-- / arrayvar += 2 / arrayvar -= 2 / arrayvar *= 3 / arrayvar /= 3``
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- array operations
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copy (from another array with the same length), shift-N(left,right), rotate-N(left,right)
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clear (set whole array to the given value, default 0)
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- array operations ofcourse work identical on vars and on memory mapped vars of these types.
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- strings: identical operations as on array.
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For now, we have the ``memcopy`` and ``memset`` builtin functions.
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More optimizations
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^^^^^^^^^^^^^^^^^^
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Add more compiler optimizations to the existing ones.
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- on the language AST level
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- on the final assembly source level
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- can the parameter passing to subroutines be optimized to avoid copying?
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- working subroutine inlining (taking care of vars and identifier refs to them)
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Also some library routines and code patterns could perhaps be optimized further
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Eval stack redesign? (lot of work)
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^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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The eval stack is now a split lsb/msb stack using X as the stackpointer.
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Is it easier/faster to just use a single page unsplit stack?
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It could then even be moved into the zeropage to greatly reduce code size and slowness.
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Or just move the LSB portion into a slab of the zeropage.
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Allocate a fixed word in ZP that is the TOS so we can always operate on TOS directly
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without having to to index into the stack?
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Bugs
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^^^^
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Ofcourse there are still bugs to fix ;)
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Misc
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^^^^
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Several ideas were discussed on my reddit post
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https://www.reddit.com/r/programming/comments/alhj59/creating_a_programming_language_and_cross/
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