google/error-prone
Nov 2024 – Sep 2025
9 Months active
Languages Used
JavaMarkdown
Technical Skills
Code RefactoringCode TransformationJava DevelopmentStatic AnalysisCode QualityCompiler Plugins
markbrady
PROFILE
Markbrady
Mark Brady enhanced the StatementSwitchToExpressionSwitch bug checker in the google/error-prone repository, focusing on automated refactoring of Java switch statements to expression switches. Over nine months, he delivered features and fixes that preserved code comments, improved handling of null and default cases, and ensured safe variable hoisting within switch scopes. Mark used Java and the Java Compiler API to implement robust static analysis and code transformation logic, adding regression and unit tests to validate edge cases. His work improved the reliability and maintainability of automated code migrations, reducing manual review and supporting safer, more efficient modernization of large Java codebases.
Overall Statistics
Feature vs Bugs
50%Features
Repository Contributions
22Total
Bugs
6
Commits
22
Features
6
Lines of code
4,634
Activity Months9
Your Network
4187 people
Work History
September 2025
1 Commits
Sep 1, 2025September 2025 (google/error-prone) – Key reliability enhancement for the StatementSwitchToExpressionSwitch auto-fix. Implemented preservation of null and default switch cases by introducing a NullDefaultKind enum to classify switch cases, ensuring that null and default labels are retained during auto-fix. This fixes a bug where case null could be omitted and significantly improves the reliability of automated refactoring from statement switches to expression switches. Impact: Reduced risk of incorrect refactor outcomes, fewer manual follow-ups, and faster safe migrations for teams converting legacy switch constructs. Increases confidence in automated tooling and lowers maintenance costs associated with conversion edge cases. Commit: a2df97f0d3842e1d45f26bf085a3a95f273346be
1 Commits
Sep 1, 2025September 2025 (google/error-prone) – Key reliability enhancement for the StatementSwitchToExpressionSwitch auto-fix. Implemented preservation of null and default switch cases by introducing a NullDefaultKind enum to classify switch cases, ensuring that null and default labels are retained during auto-fix. This fixes a bug where case null could be omitted and significantly improves the reliability of automated refactoring from statement switches to expression switches. Impact: Reduced risk of incorrect refactor outcomes, fewer manual follow-ups, and faster safe migrations for teams converting legacy switch constructs. Increases confidence in automated tooling and lowers maintenance costs associated with conversion edge cases. Commit: a2df97f0d3842e1d45f26bf085a3a95f273346be
September 2025
July 2025
1 Commits
Jul 1, 2025July 2025 monthly summary for google/error-prone focusing on stability and reliability of static analysis. Implemented a critical bug fix in StatementSwitchToExpressionSwitch to prevent naming conflicts during hoisting within switch scopes. This change reduces compilation errors, improves maintainability of the checker, and strengthens confidence in automated code analysis for large Java codebases.
July 2025
1 Commits
Jul 1, 2025July 2025 monthly summary for google/error-prone focusing on stability and reliability of static analysis. Implemented a critical bug fix in StatementSwitchToExpressionSwitch to prevent naming conflicts during hoisting within switch scopes. This change reduces compilation errors, improves maintainability of the checker, and strengthens confidence in automated code analysis for large Java codebases.
June 2025
1 Commits • 1 Features
Jun 1, 2025June 2025 performance summary for google/error-prone: Focused on enhancing the StatementSwitchToExpressionSwitch checker by updating its documentation and bug pattern summaries to clearly articulate the benefits of new-style arrow switches over old-style colon switches, including expanded examples and synchronized Java code descriptions. This work improves developer guidance, reduces misinterpretation, and supports smoother adoption of the checker in downstream projects.
1 Commits • 1 Features
Jun 1, 2025June 2025 performance summary for google/error-prone: Focused on enhancing the StatementSwitchToExpressionSwitch checker by updating its documentation and bug pattern summaries to clearly articulate the benefits of new-style arrow switches over old-style colon switches, including expanded examples and synchronized Java code descriptions. This work improves developer guidance, reduces misinterpretation, and supports smoother adoption of the checker in downstream projects.
June 2025
May 2025
2 Commits • 1 Features
May 1, 2025May 2025 (2025-05) monthly summary for google/error-prone: Delivered targeted improvements to the StatementSwitchToExpressionSwitch checker, including edge-case handling and comment preservation, and fixed a critical grouping bug. These changes enhance static analysis accuracy and maintainability, delivering clearer, more reliable guidance for Java code modernization efforts.
May 2025
2 Commits • 1 Features
May 1, 2025May 2025 (2025-05) monthly summary for google/error-prone: Delivered targeted improvements to the StatementSwitchToExpressionSwitch checker, including edge-case handling and comment preservation, and fixed a critical grouping bug. These changes enhance static analysis accuracy and maintainability, delivering clearer, more reliable guidance for Java code modernization efforts.
April 2025
3 Commits • 1 Features
Apr 1, 2025April 2025 monthly summary: Focused on improving reliability and business value of automated code migrations in google/error-prone by enhancing the StatementSwitchToExpressionSwitch bug checker. Delivered default enablement of direct conversion, strengthened null-case handling and Java 21 pattern matching support, and stabilized unit tests to ensure deterministic behavior across CI. These changes reduce manual review and accelerate safe switch-to-expression migrations.
3 Commits • 1 Features
Apr 1, 2025April 2025 monthly summary: Focused on improving reliability and business value of automated code migrations in google/error-prone by enhancing the StatementSwitchToExpressionSwitch bug checker. Delivered default enablement of direct conversion, strengthened null-case handling and Java 21 pattern matching support, and stabilized unit tests to ensure deterministic behavior across CI. These changes reduce manual review and accelerate safe switch-to-expression migrations.
April 2025
March 2025
4 Commits • 1 Features
Mar 1, 2025March 2025 monthly summary for google/error-prone. Focused on delivering safer, more reliable automated refactoring from statements to expression switches, while expanding default behavior to reduce manual toggling. Key investments include enabling assignment switch conversion by default and hardening the bug checker against edge cases, supported by targeted tests and measurable improvements in code quality and developer productivity.
March 2025
4 Commits • 1 Features
Mar 1, 2025March 2025 monthly summary for google/error-prone. Focused on delivering safer, more reliable automated refactoring from statements to expression switches, while expanding default behavior to reduce manual toggling. Key investments include enabling assignment switch conversion by default and hardening the bug checker against edge cases, supported by targeted tests and measurable improvements in code quality and developer productivity.
February 2025
3 Commits • 1 Features
Feb 1, 2025February 2025: Strengthened the StatementSwitchToExpressionSwitch checker in google/error-prone with a focus on stability, correctness, and scalable future support. Delivered direct-conversion enhancements with proper hoisting and lexical-scope handling, added targeted robustness fixes, and expanded test coverage to guard against edge cases. Implemented safeguards by disabling the checker when Java 21-style case patterns are detected to prevent incorrect fixes, laying groundwork for future pattern-support. Result: safer automated refactor suggestions, reduced risk of introducing regressions, and a solid foundation for upcoming Java pattern features.
3 Commits • 1 Features
Feb 1, 2025February 2025: Strengthened the StatementSwitchToExpressionSwitch checker in google/error-prone with a focus on stability, correctness, and scalable future support. Delivered direct-conversion enhancements with proper hoisting and lexical-scope handling, added targeted robustness fixes, and expanded test coverage to guard against edge cases. Implemented safeguards by disabling the checker when Java 21-style case patterns are detected to prevent incorrect fixes, laying groundwork for future pattern-support. Result: safer automated refactor suggestions, reduced risk of introducing regressions, and a solid foundation for upcoming Java pattern features.
February 2025
January 2025
5 Commits • 1 Features
Jan 1, 2025January 2025 (Month: 2025-01) focused on delivering robust enhancements to the google/error-prone StatementSwitchToExpressionSwitch bug checker. This work expands automated switch-to-expression conversions with safer defaults, broader coverage, and configurable behavior, driving faster refactoring with lower risk across codebases.
January 2025
5 Commits • 1 Features
Jan 1, 2025January 2025 (Month: 2025-01) focused on delivering robust enhancements to the google/error-prone StatementSwitchToExpressionSwitch bug checker. This work expands automated switch-to-expression conversions with safer defaults, broader coverage, and configurable behavior, driving faster refactoring with lower risk across codebases.
November 2024
2 Commits
Nov 1, 2024November 2024 monthly summary for google/error-prone focusing on the StatementSwitchToExpressionSwitch bug checker improvements. The team delivered a targeted bug fix to preserve leading comments when converting switch statements to expression switches, ensuring important contextual information is not lost during refactors. The work enhances reliability of automated transformations and reduces post-refactor rework for developers after code churn.
2 Commits
Nov 1, 2024November 2024 monthly summary for google/error-prone focusing on the StatementSwitchToExpressionSwitch bug checker improvements. The team delivered a targeted bug fix to preserve leading comments when converting switch statements to expression switches, ensuring important contextual information is not lost during refactors. The work enhances reliability of automated transformations and reduces post-refactor rework for developers after code churn.
November 2024
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Quality Metrics
Correctness96.4%
Maintainability93.6%
Architecture91.8%
Performance83.2%
AI Usage20.0%
Skills & Technologies
Programming Languages
JavaMarkdown
Technical Skills
Bug DetectionBug FixingCode AnalysisCode QualityCode RefactoringCode TransformationCompiler DevelopmentCompiler PluginsCompiler ToolsDocumentationJavaJava Compiler APIJava DevelopmentJava Language FeaturesStatic Analysis
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