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Implement fast paths for ASCII in unicode regexes #4

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osa1 opened this issue May 30, 2021 · 0 comments
Open

Implement fast paths for ASCII in unicode regexes #4

osa1 opened this issue May 30, 2021 · 0 comments
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perf Related to runtime performance

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@osa1
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osa1 commented May 30, 2021

Some of the search tables for built-in unicode regular expressions are quite large, but I think 99.9999% of the time they will match ASCII characters, so we should implement a fast path for that. For example, XID_Start currently makes 9 range comparisons to match a.
@osa1 osa1 added the perf Related to runtime performance label Feb 4, 2022
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