Re: Featuritism

[Hans Aberg]

At 10:26 +0100 2002/01/10, Akim Demaille wrote:
>| At 15:02 +0100 2002/01/09, Akim Demaille wrote:
>| >In the wide range of possible definition of locations I forgot one
>| >important: some scanners include yytext (well, a copy, of course) in
>| >the position, so that when they output an error message, they also
>| >include the text of the error:
>| >
>| >~/src/gawk % gawk 'BEGIN {error+}'                               nostromo
>| >Err 1
>| >gawk: cmd. line:1: BEGIN {error+}
>| >gawk: cmd. line:1:              ^ parse error
>| >
>| >One such example is GNU AWK.  The scanner is written by hand and it
>| >keeps the whole current line, but the idea applies equally.
>|
>| The suggestion I gave is that one gives the location as a semi-open [begin,
>| end) pair of yytext. Then just use then end or end-1 value to get that
>| effect.
>
>Great!  Brilliant!  We're saved!
>
>It just has nothing to do with what I was showing.

The suggestion I gave was made with such type of error reporting in mind.

So if something fails, so better explain.

  Hans Aberg