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Improve the performance of the new parser #6

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daniellansun opened this issue Oct 5, 2016 · 0 comments

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daniellansun commented Oct 5, 2016

@sharwell provided a useful advice:

"You can save a great deal of time on correct inputs by using a two-stage parsing strategy.

Attempt to parse the input using BailErrorStrategy and PredictionMode.SLL. If no exception is thrown, you know the answer is correct.
If a ParseCancellationException is thrown, retry the parse using the default settings (DefaultErrorStrategy and PredictionMode.LL)."

antlr/antlr4#192

daniellansun added the enhancement label

daniellansun added a commit that referenced this issue


          Fix issue #6

a31538f

daniellansun closed this as completed

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