[Webkit-unassigned] [Bug 258531] New: [JSC] Improve RegExp Lookbehind Character Class Backtracking

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=258531

            Bug ID: 258531
           Summary: [JSC] Improve RegExp Lookbehind Character Class
                    Backtracking
           Product: WebKit
           Version: WebKit Local Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Keywords: InRadar
          Severity: Normal
          Priority: P2
         Component: JavaScriptCore
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: msaboff at apple.com

We currently backtrack character classes that may contain non-BMP characters by rematching one less than the prior count.  For large strings that need to backtrack a large number of characters, this is quit wasteful.

Now that we have methods that can read non-BMP characters either forward or bacckward, we can use these to back up just one character.  The same applies to lookaheads.

-- 
You are receiving this mail because:
You are the assignee for the bug.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.webkit.org/pipermail/webkit-unassigned/attachments/20230626/dfcd8c06/attachment.htm>