mozilla/rhino
Dec 2024 – Mar 2026
2 Months active
Languages Used
Java
Technical Skills
ConcurrencyJavaObject-Oriented ProgrammingRefactoringParser DevelopmentUnit Testing
Grzegorz Caban
PROFILE
Grzegorz Caban
Worked on the mozilla/rhino repository to enhance stability and parsing reliability in Java-based JavaScript environments. Focused on concurrency and thread-safety, refactoring core slot and descriptor handling within ThreadSafeSlotMapContainer to prevent deadlocks and ensure robust multi-threaded operation. Improved property access logic and slot comparisons, strengthening the reliability of thread-safe objects. Additionally, addressed a parser bug affecting braceless if statements with multiple inline comments, correcting AST node flow to prevent syntax errors and EvaluatorExceptions. Leveraged Java, object-oriented programming, and parser development skills, with a strong emphasis on refactoring and unit testing to deliver targeted, high-impact bug fixes over two months.
Overall Statistics
Feature vs Bugs
0%Features
Repository Contributions
2Total
Bugs
2
Commits
2
Features
0
Lines of code
635
Activity Months2
Your Network
21 peopleWork History
March 2026
1 Commits
Mar 1, 2026March 2026 monthly summary focused on hardening the JavaScript parser used by Rhino. Delivered a critical bug fix to properly handle braceless if statements that contain multiple inline comments, improving parsing robustness and reliability for embedded JavaScript evaluation.
1 Commits
Mar 1, 2026March 2026 monthly summary focused on hardening the JavaScript parser used by Rhino. Delivered a critical bug fix to properly handle braceless if statements that contain multiple inline comments, improving parsing robustness and reliability for embedded JavaScript evaluation.
March 2026
December 2024
1 Commits
Dec 1, 2024December 2024: Stability and thread-safety improvements for Rhino's ThreadSafeSlotMapContainer were delivered to ensure robust operation in multi-threaded environments. The work focused on refactoring core slot/descriptor handling and property access to prevent deadlocks when using thread-safe objects, enhancing concurrency reliability and overall performance.
December 2024
1 Commits
Dec 1, 2024December 2024: Stability and thread-safety improvements for Rhino's ThreadSafeSlotMapContainer were delivered to ensure robust operation in multi-threaded environments. The work focused on refactoring core slot/descriptor handling and property access to prevent deadlocks when using thread-safe objects, enhancing concurrency reliability and overall performance.
Activity
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Quality Metrics
Correctness100.0%
Maintainability80.0%
Architecture90.0%
Performance80.0%
AI Usage20.0%
Skills & Technologies
Programming Languages
Java
Technical Skills
ConcurrencyJavaObject-Oriented ProgrammingParser DevelopmentRefactoringUnit Testing
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