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Sic transit discus mundi -- From the System Administrator's Guide, by Lars Wirzenius

devel / comp.compilers / getting AST from yacc

getting AST from yacc

<23-03-040@comp.compilers>

https://www.novabbs.com/devel/article-flat.php?id=772&group=comp.compilers#772

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From: lar...@rockridgefarm.com (iwlnx)
Newsgroups: comp.compilers
Subject: getting AST from yacc
Date: Sat, 25 Mar 2023 09:45:06 -0400
Organization: Compilers Central
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by: iwlnx - Sat, 25 Mar 2023 13:45 UTC

I am a bit old and do not learn as well as in the past. I have a very
large yacc file that works fine.

What I want is to produce an AST tree from the yacc .y file. I have read
many things on the net

about this but they all start at too high a level for me to grasp.

Any help for an old slow old man (related to this problem)?

Larry
[The short answer is that yacc doesn't do that, but it's not hard to write action
code that builds a AST as it does the rule reductions. If you can find a copy of
my "flex & bison" it has some examples that build AST. -John]