NonBacktracking Regex optimizations#102655

Merged

stephentoub merged 63 commits intodotnet:mainfrom ieviev:symbolic-automata

Jul 11, 2024

+994-257

Commits on Jul 10, 2024

Regex automata optimizations

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off by one err

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wip reversal optimizations

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removing unnecessary overhead

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handle final position correctly

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edge case workarounds, tests should be ok again

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optimizing lookup initialization

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more dfa overhead removed

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removed potential rewrite

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low memory variant

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some kind of compromise between speed and memory

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cheaper nullability checks

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nullability encoding

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nullability cached as bytes

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reverting some changes

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testing nfa fallback

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refactoring, work in progress

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refactoring to struct interfaces

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refactoring optimizations

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fallback mode and bugfix

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reenable warnings

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anchor edge case

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anchor edge cases

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Apply suggestions from code review

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Apply suggestions from code review

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rebased branch and some cleanup

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cleanup, removing unused features

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cleanup

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timeout limit changes

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lookup allocation threshold and timeout limits

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char mapping

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empty array mapping

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adding timeout check to create-derivative

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some cleanup

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comments and cleanup

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cleanup and comments

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reflecting new limits in tests

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rerunning tests

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retesting DFA timeout

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more precise regex memory limit for DFA mode

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reverting change

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reverting reversal refactor

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Apply suggestions from code review

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variable naming

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test for over 255 minterms

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adding net directive around test

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all engines in minterms test

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Apply suggestions from code review

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Apply suggestions from code review

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simplifying code

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state flag values down

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mintermclassifier changes

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reversal

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getstateflags

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formatting

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removing unused interface

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local function typo

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temporarily removing minterms test

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re-adding minterms test

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reenabling test for all engines

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test bugfix

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expected matches change

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Review and clean up some code
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