Use source-generated regex instead of runtime compilation (SYSLIB1045) #10303
+13
−16
Conversation
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
dotnet-policy-service
bot
requested review from
dipeshmsft,
singhashish-wpf and
Kuldeep-MS
dotnet-policy-service
bot
added
PR
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
Fixes #10302
Description
Use
GeneratedRegexattribute to allow for source-generation of regexes at compile time for improved performance.We only use regexes in two places which could effectively be removed but for now we should at least take advantage of the highest-performing form of regular expressions on .NET.
In the PBT case, we have to use a pre-processor statement to comfort NetFX scenario, which will later need naming-styles suppression.
Note:
RegexOptions.Compiledis ignored in source-generated regexes, so I've removed it.Customer Impact
Improved performance, cleaner codebase.
Regression
No.
Testing
Local build.
Risk
While the second occurence was fixed manually because analyzer won't flag it (guess nobody thought someone is declaring regex inline with a const), the change is straightforward.
Microsoft Reviewers: Open in CodeFlow