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Subject: Re: Studying and Maintaining GNAT,
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Date: Tue, 28 Aug 2018 20:02:39 -0700
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"Randy Brukardt" <randy@rrsoftware.com> writes:
> Fitting OO into a compiler design could very easily turn into a nightmare of 
> required overriding routines, making it very painful to add new kinds of 
> nodes. 

I agree with this from a different perspective.  I greatly enjoyed
Andrew Appel's book "Modern Compiler Implementation in ML" and based on
it, if I were to try writing a compiler for real, I'm quite sure I'd use
a functional-programming approach if possible, probably in Haskell or
maybe Idris, though ML is of course possible too.  People interested in
writing compilers should check out the book.