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At least...those issues are behind us. We'll see what happens next.
Also, added some macros to make debugging easily optional.
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I believe this is because I'm using right tail recursion, but I'm not really
sure how I could change it for this program.
order of operations is being observed perfectly, but then operations are being
performed from right to left, not left to right. I think I may be reducing
too frequently, honestly.
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The main interactive interface doesn't work, and there's a lot left to do with
the unit tests, other command line options, etc. but it's pretty exciting.
I also still have to figure out how commands will work. I'm thinking they'll
be stored in an Expression and executed by the engine as normal.
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There's still more to do, however. It doesn't do math anymore, it produces
a script that can then be executed. Now we have to capture that script and
execute it.
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I'm doing some reading up on LR(n) parsers, I just sort of started without
thinking about it this time, not a great approach. I feel like it can't hurt
to have an update on how this works anyway. I think the idea was solid, but
I was trying to do too much at once.
One question is what my goal should be for this. I could just solve the
equation as we go, or I could generate code that will let us solve the equation.
The later is obviously attractive in that it will let us run an expression
more than once, and maybe even define functions. I like that.
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