[erlang-patches] Return end locations in erl_scan

Vlad Dumitrescu <>
Wed Mar 20 13:49:56 CET 2013


Hi Anthony,

Don't the tokens have a start position and a length? Why do you need an
explicit end position?

regards,
Vlad



On Wed, Mar 20, 2013 at 1:44 PM, Anthony Ramine <> wrote:

> Hi,
>
> Replying on list because I think it's important.
>
> As I said to someone I don't remember the name, this patch is only a
> necessary step to what my final goal is: Clang-like diagnostics for
> Erlang compilation [1]. Is that something the OTP team wouldn't like
> to see?
>
> How is the end location in tokens redundant? I need the end locations
> of each tokens to be able to compute the location ranges of each node
> in the AST, see my work-in-progress commit for more informations [2].
>
> That being said, I am interested in having your feedback about the
> implementation.
>
> Regards,
>
> [1] http://clang.llvm.org/diagnostics.html
> [2] https://github.com/nox/otp/commit/2c8038c#diff-1
>
> PS: Sorry Hans for replying twice, I failed the Cc header.
>
> --
> Anthony Ramine
>
> Le 20 mars 2013 à 13:23, Hans Bolinder a écrit :
>
> > Hi Anthony,
> >
> > Sorry for not replying sooner.
> >
> > We'll most likely reject you patch. I asked Vlad Dumitrescu about it,
> > and he agrees with me that the functionality (the end location of
> > tokens) is redundant.
> >
> > Apart from that: when it comes to the implementation there are a few
> > things I don't approve of, but I need to take a closer look before
> > saying anything more. You've put in a good effort here, and I intend
> > to elaborate a little more on the implementation when I find the time
> > to investigate in more detail.
> >
> > Best regards,
> >
> > Hans Bolinder, Erlang/OTP team, Ericsson
>
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> 
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>
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