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Re: [GSoC] Proposal for "Parse using an AST"

From: Mathieu Lirzin
Subject: Re: [GSoC] Proposal for "Parse using an AST"
Date: Wed, 07 Mar 2018 22:04:44 +0100
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/25.3 (gnu/linux)

John Calcote <address@hidden> writes:

> Hi Matthias,
> If you have any suggestions on documents I can read or software I can check
>> to
>> prepare for this project I'll be glad to check them. I know texinfo is
>> written
>> in Perl and generates an AST so I'll check that.
> A file is really just a Makefile with embellishments. It seems
> like your ast would have to incorporate most of make’s syntax to work
> correctly.
> The reason Perl was chosen to begin with is because of its great text
> processing capabilities as, ultimately, all automake really does is copy
> the file directly to the output file, filtering out automake
> stuff along the way and injecting make snippets generated from the automake
> constructs.
> This may not appear obvious at first because many simpler files
> contain only automake stuff. But anything found in the file
> that automake doesn’t recognize is assumed to be proper make script and
> copied directly to the output file.
> I suggest making your ast handle non automake chunks as a specific token
> type designed to be passed through without modifications.

I agree that using a coarse grained AST is a good first approach.
Exploration and evaluation of a finer grained approach later during this
GSoC could be interesting too.

Thanks for your input.

Mathieu Lirzin
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