Re: Contemplating writing first compiler... comments please.

gelleric@kafka.informatik.uni-stuttgart.de (Wolfgang Gellerich)
4 Jul 1997 14:38:30 -0400

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Contemplating writing first compiler... comments please. mch24@harvey27.demon.co.uk (1997-06-30)
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From: gelleric@kafka.informatik.uni-stuttgart.de (Wolfgang Gellerich)
Newsgroups: comp.compilers
Date: 4 Jul 1997 14:38:30 -0400
Organization: Universitšt Stuttgart
References: 97-06-113
Keywords: practice

Hello Martin,


I think code generation will be a major problem in your project
because of all those little details you need to care about in order to
produce really executable .exe files. My suggestion is to generate a
symbolic intermediate code instead, and then have an interpreter
executing that code. Advantages are that it is much easies to generate
such a code, its easier to check its correctness and last not least
this approach is also used professionally: the UCSD Pascal, Modula-2
and Fortran implementations used this approach, and that idea has
recently been recycled for the implementation of Java (here in order
to get hardware- independent machine code).


For an idea of how such a code might look like, take a look into
"compiler construction" by Niklaus Wirth (by the way, I think that
those editions of that book which used Modula-2 as implementation
language are better then the current edition - my personal opinion
only...).


Hope that helps,


    Wolfgang Gellerich
--


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