I wonder if the code in the IFDEF should use Error, or if instead of the IFDEF, it should be an assert?
I overlooked one instance of reeBadOpcodeInCharClass => because at the end of a if/else waterfall it adds no extra time.
I disabled WITH_REGEX_ASSERT in Delphi, as I don't know the "IFOPT" alternative.
Benchmarks
Running 8 repeats for each benchmark. Use -c <n> to change
Before | After | Match count
==============================================================================
regexpr.pas:
/Twain/ : 29 ms | 29 ms | 2388
/(?i)Twain/ : 54 ms | 54 ms | 2657
/[a-z]shing/ : 230 ms | 230 ms | 1877
/Huck[a-zA-Z]+|Saw[a-zA-Z]+/ : 33 ms | 31 ms | 396
/./ : 445 ms | 419 ms | 18905427
/(.)/ : 668 ms | 654 ms | 18905427
/e/ : 82 ms | 82 ms | 1781425
/(e)/ : 103 ms | 101 ms | 1781425
/(?s).{1,45} / : 37 ms | 35 ms | 475715
/(?s)\G.{1,45} / : 164 ms | 154 ms | 10616
/\G(?s).{1,45} / : 17 ms | 15 ms | 10616
/(?s).{1,45}? / : 179 ms | 154 ms | 3241534
/(?s)\G.{1,45}? / : 168 ms | 154 ms | 69431
/\G(?s).{1,45}? / : 19 ms | 17 ms | 69431
/\b\w+nn\b/ : 244 ms | 228 ms | 359
/[a-q][^u-z]{13}x/ : 654 ms | 609 ms | 4929
/Tom|Sawyer|Huckleberry|Finn/ : 35 ms | 37 ms | 3015
/(?i)Tom|Sawyer|Huckleberry|Finn/ : 193 ms | 185 ms | 4820
/.{0,2}(Tom|Sawyer|Huckleberry|Finn)/ : 2591 ms | 2417 ms | 3015
/.{2,4}(Tom|Sawyer|Huckleberry|Finn)/ : 2781 ms | 2666 ms | 2220
/Tom.{10,25}river|river.{10,25}Tom/ : 54 ms | 54 ms | 2
/[a-zA-Z]+ing/ : 615 ms | 585 ms | 95863
/\s[a-zA-Z]{0,12}ing\s/ : 269 ms | 271 ms | 67810
/([A-Za-z]awyer|[A-Za-z]inn)\s/ : 634 ms | 640 ms | 313
/["'][^"']{0,30}[?!\.]["']/ : 76 ms | 68 ms | 9857
/Tom(.{3,3}|.{5,5})*Finn/ : 3121 ms | 2988 ms | 11
/Tom(...|.....)*Finn/ : 1638 ms | 1490 ms | 11
/Tom(...|.....)*?Finn/ : 1568 ms | 1492 ms | 11
/Tom((...|.....){2,9}\s){1,5}?Finn/ : 4193 ms | 3953 ms | 11
/Tom((...|.....){2,9}?\s){1,5}Finn/ : 4212 ms | 3939 ms | 11
/\G(?is).(?=.*$)/ : 968 ms | 902 ms | 20045118
/\G(?is).(?=(.){1,5}?$)?/ : 3580 ms | 3367 ms | 20045118
/\G(?is).(?=.*+$)/ : 945 ms | 888 ms | 20045118
/\G(?is).{10,10}(?=(e|y|on|fin|.){0,20})/ : 2613 ms | 2000 ms | 2004511
/\G(?is).{10,10}(?=(?>e|y|on|fin|.){0,20})/ : 2609 ms | 2009 ms | 2004511
/Tom(?!.*Finn)/ : 31 ms | 33 ms | 2441
/(?i)(?>[aeoui][bcdfghjklmnpqrstvwxyz \r\n]*){1,40}/ : 626 ms | 656 ms | 579843
/(?i)[ bdlm][abdegij][mnoprst]/ : 248 ms | 232 ms | 788955
Total: 36740 ms | 33853 ms |
I wonder if the code in the IFDEF should use
Error, or if instead of the IFDEF, it should be anassert?I overlooked one instance of
reeBadOpcodeInCharClass=> because at the end of a if/else waterfall it adds no extra time.I disabled WITH_REGEX_ASSERT in Delphi, as I don't know the "IFOPT" alternative.
Benchmarks