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On Tue, 26 Nov 2019, Markus Elfring wrote:
> > Coccinelle doesn't currently support adding ifdefs on expressions,
> > only on statements.
>
> Can the following transformation approach ever work
>
> @adjustment2@
> expression x;
> @@
> +#ifdef USE_F
> f
> +#else
> +g
> +#endif
> (x);
Obviously, it what was asked for would work, this would work too. We're
not going to make a special case to exclude expressions that are
identifiers. But the generated code would look horrible.
The reason for putting an ifdef on an expression would be that the
expression could appear in other contexts, such as conditional tests, not
to minimize the number of characters in the file.
julia
>
> in addition to this code variant for the semantic patch language?
>
> @adjustment1@
> expression x;
> @@
> +#ifdef USE_F
> f(x);
> +#else
> +g(x);
> +#endif
>
>
> Regards,
> Markus
>
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