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Re: Bison-like source locations in LALR-parser
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From: |
Ludovic Courtès |
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Subject: |
Re: Bison-like source locations in LALR-parser |
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Date: |
Mon, 11 Aug 2014 20:21:39 +0200 |
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User-agent: |
Gnus/5.130011 (Ma Gnus v0.11) Emacs/24.3 (gnu/linux) |
Hi, Jan,
Jan Nieuwenhuizen <address@hidden> skribis:
> I am using these patches to provide Bison-like source locations that we
> need for error messages and the like. The output of the parser is a
> plain scheme tree, now transparently annotated with source locations
> that match the parsed input file.
I don’t think this is needed. Lexers are expected to use
‘make-lexical-token’ and ‘make-source-location’ from (system base lalr)
to preserve source location information.
Besides, note that lalr.upstream.scm is a copy of the upstream lalr-scm,
hosted at <http://code.google.com/p/lalr-scm/>.
HTH,
Ludo’.