xbase expression performance issue with nested feature calls about xtext-extras HOT 5 CLOSED

arithmetic expressions have the same issue:
Take the expression below:

-1-1-1-1-1-1-1

It looks like the number of times

org.eclipse.xtext.xbase.typesystem.computation.XbaseTypeComputer._computeTypes(XAbstractFeatureCall, ITypeComputationState)

gets invoked increases exponentially with the number of '-'.

from xtext-extras.

We use a slightly modified version of the template language https://www.eclipse.org/Xtext/documentation/207_template.html where this problem also occurs with larger files, (i.e. a lot of feature calls).
Are there any updates on this issue or can anybody point me to some further informations on this?
Kind regards, Pete

Xtext 2.14

from xtext-extras.

Sorry, no news on that. I would recommend to refactor the code to avoid these deep nestings. I doubt that we have capacity to fix this for 2.14. But if you like to help we would support in reviewing PRs.
Starting point would be to examine why XbaseTypeComputer._computeTypes is called that often and if caching somewhere is valid. It is not a trivial thing, though.

from xtext-extras.

Thanks for your fast reply. I will try to look into your suggested starting point.

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Closed as wont-fix. Feel free to reopen at github.com/eclipse/xtext

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