Regarding Fortran, about 3 weeks ago, I looked into implementing a
`#lang fortran77` or `#lang fortran90`.
Functionality-wise, it looks doable; speed-wise, not so great. I have
no further need for this, but it's an interesting practical/hobby
project someone might want to pursue.
(For easy intermixing of Fortran and Racket code, there are boxing and
marshalling inefficiencies, especially when you combine that with code
that depends on behavior like shared mutations of very
byte/word-layout-sensitive overlaying/sharing of dissimilar types on the
same memory. Though there do appear to be lots of optimization
opportunities, when you can prove that some Fortran-specific language
complications don't apply, to particular
procedures/variables/values/calls. The control flow construct mapping
is relatively easy. F77 and F90 parsing are both doable, and
potentially a little fun. I didn't get all the way into all the things
that can be done with arrays, and there might be other tricky Fortran
features I didn't get to. It would be a substantial project, for either
a good practical reason or a hobby.)
Neil V.
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