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Tue Aug 2 12:22:32 CEST 2011
Predicates and Control flow
It's straightforward to write Eval for if_ but what about code?
Another interesting problem is the types of Eq and Ord: a -> a ->
Bool. This is only useful for partially evaluated conditiond.
Maybe it's time to switch to AwesomePrelude[1], though there are a lot
of problems that sort of negate its usefulness. Seems to me that
writing a parser that replaces part of the Haskell syntax is a simpler
approach. I'm starting to miss Scheme now. Makes me wonder, how hard
is it to do this in (typed) Scheme?
The problem of Eq and Ord is a non-issue. Either define some
different symbols like .== .> .< or redefine the Prelude symbols in
modules that perform computations.
Representing control flow otoh is a whole other story. The main
questions to answer are:
- variable context: it is absolutely essential that a C-style (local)
context is maintained for loops. tail recursion is nice but the
simultaneous assignment is something i don't know how to handle.
maybe it's a non-issue?
- function inlining: at some point a decision needs to be made about
function inlining. currently in SymAsm everything is inlined.
[1] entry://../compsci/20110802-141549
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