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readme: updated todo

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Veit Heller
2017-05-19 11:47:56 -04:00
parent 42fff2f310
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README.md
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@@ -9,14 +9,11 @@ prompt. Work in progress. Very incapable right now.
The idea behind `bc` is to display partial results to the right of the The idea behind `bc` is to display partial results to the right of the
cursor in yellow while we type. A little example can be found in the video cursor in yellow while we type. A little example can be found in the video
above. Other than that, we want to be compatible with the original `bc`, though above. Minor syntactic cleanups have been developed as well (e.g. no `local`
somewhat faster. We have infinite precision integers and double precision floats. keyword). We have infinite precision integers and double precision floats.
## TODO ## TODO
Basically everything except numbers, variables, and `if`. This includes:
- A complete parser (foundations are laid)
- A better evaluator (the current just does a tree rewrite on binary operations; this is
cute, but not capable enough for the full `bc` language, of course)
- A good readline copy (haskeline is sadly out of the question for this project) - A good readline copy (haskeline is sadly out of the question for this project)
- Comment parsing
- Closures that can modify the parent environment (but do away with the `local` keyword).