On Thu, 25 Jun 2020, Markus Elfring wrote:
> >> @display@
> >> expression x, y;
> >> @@
> >> *y = ... *(x) ...
> >
> > This is probably not what you think. It is an assignment of y to a
> > multiplication followed by some other code (the second ...).
>
> I would interpret such a source code search approach in the way
> that a varying expression which contains one known (?) operation
> is assigned to an other target.
>
> Can the ambiguity for the asterisk (before the parentheses) be avoided?
>
>
> Should the following script variant for the semantic patch language
> match only code with pointer dereferences?
>
> @display@
> expression* x;
> expression y;
> @@
> *y = ... *(x) ...
There is no ... like this at the expression level. You can say <+...
*(x) ...+> if you want *(x) to be a subexpression of the right hand side.
julia
>
>
>
> >> @display@
> >> expression action, x, y;
> >> @@
> >> (
> >> *y = ... *(x) ...
> >> |
> >> *action(..., x, ...)
> >> )
>
> May I expect that such SmPL disjunctions should also work?
>
> Regards,
> Markus
>
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