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Add String and Char patterns to StringScanner #13806

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merged 2 commits into from
Oct 29, 2023
Merged

Add String and Char patterns to StringScanner #13806

merged 2 commits into from
Oct 29, 2023

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funny-falcon
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Ruby since 2.6 added ability to use String as pattern for StringScanner. It is quite usable since it doesn't lead to regexp machinery.

@funny-falcon funny-falcon force-pushed the string_scanner_simple_pattern branch from 96ce4f5 to 573521f Compare September 17, 2023 00:40
HertzDevil
HertzDevil requested changes Sep 18, 2023
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@funny-falcon funny-falcon force-pushed the string_scanner_simple_pattern branch from 2a68f3a to fbae4c5 Compare September 19, 2023 18:56
HertzDevil
HertzDevil requested changes Sep 19, 2023
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@funny-falcon
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@HertzDevil , String#byte_index(Char) is in #13819 . After it will be merged, I'll update this PR.

Also I added simpler Rabin-Karp for short needles at #13820

@HertzDevil
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The merge conflicts should be resolved

@funny-falcon funny-falcon force-pushed the string_scanner_simple_pattern branch from fbae4c5 to c3d13b6 Compare October 1, 2023 10:11
@funny-falcon
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@HertzDevil I've rebased branch.

Additionally, I've deduplicate match method abusing both String and Char have each_byte method.
It could be not fastest way, but it removes need for two methods.

I think, String#starts_with? could accept additional parameter: offset for char offset, and byteoffset for byteoffset. Latter could be used in StringScanner. Python's startswith has start and end options for a while.
But let this happen in other PR.

@HertzDevil
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Please do not rebase. It erases the review history.

@funny-falcon
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Please do not rebase. It erases the review history.

I think, Github is smart enough.
Current review remarks were about lines to remove, and lines were removed.

@funny-falcon
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@HertzDevil have you remarks or suggestions to current PR commits?

@straight-shoota
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straight-shoota commented Oct 4, 2023 •
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No, seriously: Do not force push.
Please follow the contributor's guide and only add new commits instead of overwriting old ones. This makes the job for reviewers much easier 🙇

@funny-falcon
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@straight-shoota , ok, I will not next time. I'm sorry for doing it this time. I doubt I could restore branch in previous state.

@funny-falcon
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@HertzDevil , should I fix anything in this PR?

@straight-shoota straight-shoota added this to the 1.11.0 milestone Oct 27, 2023
@straight-shoota straight-shoota changed the title Add ability to use String and Char as pattern in StringScanner Add String and Char patterns to StringScanner Oct 29, 2023
@straight-shoota straight-shoota merged commit 7aa0282 into crystal-lang:master Oct 29, 2023
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Blacksmoke16 pushed a commit to Blacksmoke16/crystal that referenced this pull request Dec 11, 2023
@funny-falcon @straight-shoota @Blacksmoke16
Add String and Char patterns to StringScanner (crystal-lang#13806)
ab3fef2 
Co-authored-by: Johannes Müller <[email protected]>
@BrewTestBot BrewTestBot mentioned this pull request Jan 8, 2024
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@HertzDevil HertzDevil HertzDevil approved these changes

@straight-shoota straight-shoota straight-shoota approved these changes

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@funny-falcon @HertzDevil @straight-shoota @Blacksmoke16