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How to improve the deserialization time of ATNSimulator? #3554

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tzzhwj opened this issue Feb 23, 2022 · 0 comments

tzzhwj commented Feb 23, 2022

ANTLR4 is a great tool.

But I have faced a performance problem.
As @ericvergnaud said，“We should focus on deserialization time, and memory size after deserialization.”

I have used ANTLR 4.9.3 to generate my CssParser.java and Csslexer.java from css3.g4

Both the two class spend about 70ms - 100ms to deserialize the _serializedATN which is a long String.

Is there any way to decrease the deserialization time of ATN？

Thank you very much for your support!

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