Dear All,
I have some questions regarding processing times and anchors ("@").
First of all, is it possible to define an anchor on a disjunction?
What I tested was to have a simple rule (1) that should start on the Element in
the middle (2). Now this element had a variation (3) but I could not use the
anchor in that case anymore:
1) A B C; // works
2) A @B C; // works
3) A @(B|D) C; // NOT WORKING
Is this behaviour intended or simply not supported?
[NOTE: NOT WORKING means eclipse does not complain, but the rule never matches]
The above led to some testing with a different setup(4), however, since
disjunctions don't seem to work, this was also not valid.
4) A @((B C) | (D C)); // NOT WORKING
Is there a scenario where anchors are valid in and before brackets? From my
observation I've seen that (5)-(10) are all working as expected and all start
matching on B. But, do they differ in terms of processing? I noticed slightly
longer processing times in (5) and ever so slightly in (6), but not very
indicative. Could (5)-(10) differ in processing time?
5) A @B C
6) (A @B C)
7) @(A @B C)
8) A @(B C)
9) A @(@B C)
10) A (@B C)
Since rule (10) works as expected, why does (11) work differently and start on
A but not on B and D? (This would be useful in a scenario where B and D
combined appear less often than A)
11) A ((@B C) | (@D C)); // starts matching on A
Thank you in advance for your answers,
Best
Dominik
Dominik Terweh
Praktikant
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