Re: Improved accuracy in diagnostics. Is it worthwhile?

Kaz Kylheku <480-992-1380@kylheku.com>
Fri, 18 Mar 2022 16:47:47 -0000 (UTC)

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Related articles
Improved accuracy in diagnostics. Is it worthwhile? drikosev@gmail.com (Ev. Drikos) (2022-03-18)
Re: Improved accuracy in diagnostics. Is it worthwhile? 480-992-1380@kylheku.com (Kaz Kylheku) (2022-03-18)
Re: Improved accuracy in diagnostics. Is it worthwhile? tkoenig@netcologne.de (Thomas Koenig) (2022-03-18)
Re: Improved accuracy in diagnostics. Is it worthwhile? drikosev@gmail.com (Ev. Drikos) (2022-03-19)
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From: Kaz Kylheku <480-992-1380@kylheku.com>
Newsgroups: comp.compilers
Date: Fri, 18 Mar 2022 16:47:47 -0000 (UTC)
Organization: A noiseless patient Spider
References: 22-03-035
Injection-Info: gal.iecc.com; posting-host="news.iecc.com:2001:470:1f07:1126:0:676f:7373:6970"; logging-data="91710"; mail-complaints-to="abuse@iecc.com"
Keywords: yacc, errors
Posted-Date: 18 Mar 2022 12:50:05 EDT

On 2022-03-18, Ev. Drikos <drikosev@gmail.com> wrote:
> Hello,
>
> This is mainly a parsing question but it's also Fortran related as well.
>
> When I make syntax checking with the command 'fcheck' in the code below,
> the error message doesn't contain a '(' in the expected tokens. This
> happens due to default actions, although the parser is basically LALR. A
> pure LALR parser wouldn't make reductions without examininig the lookahead.


I think you mean default reductions?


In the case of Yacc, the action is the body { $$ = $1; }


:)


--
TXR Programming Language: http://nongnu.org/txr
Cygnal: Cygwin Native Application Library: http://kylheku.com/cygnal

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