Hi Paolo,
As you can see, Sam and I have been trying to improve the performance
of the antlr4 parser recently. I believe the performance could be improved a
lot, but antlr4 parser will be slower than antlr2 parser as a whole finally
due to the following reasons(including but not limited to):
1) Groovy 3's grammar is more complicated than Groovy 2's
2) Different algorithms used by antlr2 and antlr4, as I said in the previous
email
> What is the maximum number of lines of code that a source file should
> contain to prevent perf degradation?
It needs some tests. Let's wait for the tuning result ;-)
Cheers,
Daniel.Sun
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Apache Groovy committer & PMC member
Blog: http://blog.sunlan.me
Twitter: @daniel_sun
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