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Optimize regex matching for finding non-global matches #117

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LinqLover opened this issue Feb 23, 2024 · 0 comments
Open

Optimize regex matching for finding non-global matches #117

LinqLover opened this issue Feb 23, 2024 · 0 comments
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challenging [RATING] This issue entails technical or design challenges such as a big and unclear scope. tools and libraries [SCOPE] From #asTextToHtml over JSON parsing to Debugger and Browser.

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@LinqLover
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matchesRegex: '.*...' should be as fast as RxMatcher>>search:, but is currently significantly slower:

longString := String new: 10000 withAll: $x.
longString matchesRegex: '.*y'.
'y' asRegex search: longString.

Can RxMatchOptimizer handle this?

Related issues:

  • search: is pretty inefficient, maybe it could utilize something like findSubstring:
  • analogously, in the other direction, lookbehind matching is very inefficient and could benefit from a "backwards matching" mode ... so many construction sites :-)
@LinqLover LinqLover added challenging [RATING] This issue entails technical or design challenges such as a big and unclear scope. tools and libraries [SCOPE] From #asTextToHtml over JSON parsing to Debugger and Browser. labels Feb 23, 2024
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challenging [RATING] This issue entails technical or design challenges such as a big and unclear scope. tools and libraries [SCOPE] From #asTextToHtml over JSON parsing to Debugger and Browser.
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