Re: Declaring a local variable in re-entrant C parser

[Michael Moser]

This is a non issue: the problem can be solved by adding state variables to
a structure that is passed as additional parameter to parsing function.
Please disregard my previous email


Is it possible to declare variable in a re-entrant parser ?
>
> Normally this is not an issue with non recursive parser; one can add
> global variable into the
> code with %{ .. %} ; initialization of variable can be added by
> %initial-action { .. }
>
> but adding new non global variables can't be done with for recursive
> parser.
> %initial-action can't be used for that purpose.
>
> Meanwhile I managed to work around by means of magic sed; the re-entrant
> parser has the comment
> /* The lookahead symbol */ at the start of the parser function.
>
> sed -e "s/\/\* The lookahead symbol\.  \*\//$CODE/" pars.c >pars.txt.temp
> mv -f pars.txt.temp pars.c
>
> This solution is ugly and also adds dependency on the template used.
>
> Is is possible to add a directive similar to initial-action that adds
> declaration as is to the start of the parser function ?
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