openrewrite/rewrite-csharp
Oct 2024 – Feb 2026
16 Months active
Languages Used
C#JavaCSharpXMLBashBatchGradleJson
Technical Skills
AST ManipulationC# ParsingCode GenerationJava DevelopmentRefactoringC# Development
Andrew Stakhov
PROFILE
Andrew Stakhov
Andrew Stakhov contributed to the openrewrite/rewrite-csharp repository by engineering advanced code analysis and transformation tooling for .NET and C# projects. Over 16 months, he delivered features such as Roslyn-based analyzers, automated migration utilities, and cross-language recipe execution, focusing on maintainability and compatibility with evolving .NET standards. His work included parser and code generation enhancements, CI/CD automation, and robust NuGet packaging, leveraging technologies like C#, Java, and MSBuild. By integrating semantic analysis, batch processing, and release automation, Andrew improved code quality, streamlined upgrades, and reduced manual effort, demonstrating depth in backend development, build automation, and static analysis workflows.
Overall Statistics
Feature vs Bugs
89%Features
Repository Contributions
126Total
Bugs
5
Commits
126
Features
42
Lines of code
470,307
Activity Months16
Your Network
18 peopleWork History
February 2026
5 Commits • 2 Features
Feb 1, 2026February 2026 monthly deliverables for openrewrite/rewrite-csharp focused on NuGet packaging, dependency resolution, Roslyn analyzers, and .NET 10 compatibility. Delivered robust packaging enhancements, improved code quality, and streamlined Roslyn-related artifacts. The work reduced licensing/compliance risk, improved publish reliability, and positioned the project for smoother upgrades to .NET 10 and future Roslyn updates.
5 Commits • 2 Features
Feb 1, 2026February 2026 monthly deliverables for openrewrite/rewrite-csharp focused on NuGet packaging, dependency resolution, Roslyn analyzers, and .NET 10 compatibility. Delivered robust packaging enhancements, improved code quality, and streamlined Roslyn-related artifacts. The work reduced licensing/compliance risk, improved publish reliability, and positioned the project for smoother upgrades to .NET 10 and future Roslyn updates.
February 2026
January 2026
12 Commits • 5 Features
Jan 1, 2026January 2026 (openrewrite/rewrite-csharp) — Concise monthly summary focusing on delivering business value and technical excellence across platform readiness, code transformation, conflict resolution, and release automation. Key features delivered: - .NET 10 Migration Readiness and Compatibility Improvements: Updated package references and build configurations to target .NET 10.0; aligned with breaking changes guidance and prepared the codebase for the new runtime. Commits: d5a61ff09ccefb129546a2f94e7f0278c68c4710 (implementation). - Roslyn Recipes and Code Transformation Enhancements: Added new C# recipes, enhanced Roslyn analyzer and code fix, and improved code transformation plumbing including a stable marker printer. Commits: 0208ac6df368af4978afe6f6588b7c2799f849d1; 444173ef625fbf6dce4539f49feac7b1f4b7b9a2; 53d75af4ed917529198c6745c2c51779b9eb0b9f; 1d4b1e71783f0ae1bd7f046d6817a60299165f07. - Conflict Resolution Workflow Enhancements: Improve merge conflict handling, ignore autogenerated files from conflict merges, and remove outdated conflict-resolution components. Commits: 18311842b1901c53d44e76a5344980006f57d74b; f0dbc4387fd356dd85d624974d212a7fbdc520b9. - Release and Publish Automation Enhancements: Automate release publishing to GitHub and Maven local repositories with safeguards to publish only from main or appropriate contexts. Commits: 8790076c8372c9e4c38af3a9883a8e810f89de5c; f0409b1c214472a6626b72be933150c14e2aa465. - Composite Roslyn Recipes Aggregation: Add capability to generate a composite recipe file that aggregates all package recipes for better organization and usability. Commit: 89543d627c7c0629d5a6ea39b016891d8f6a5084. Major bugs fixed: - Fixed issue with generators in Roslyn Recipes. Commit: 53d75af4ed917529198c6745c2c51779b9eb0b9f. - Ignore autogenerated files from conflict merges to reduce spurious merge noise. Commit: 18311842b1901c53d44e76a5344980006f57d74b. - Marker printer stabilization and related fixes in transformation plumbing. Commit: 1d4b1e71783f0ae1bd7f046d6817a60299165f07. - Pre-release stability fixes and release-related guardrails. Commit: f0dbc4387fd356dd85d624974d212a7fbdc520b9. - Release publish safeguard to avoid artifact publishing from PR contexts. Commit: f0409b1c214472a6626b72be933150c14e2aa465. Overall impact and accomplishments: - Strengthened platform readiness for .NET 10, reducing runtime risk and accelerating adoption. - Improved stability and usability of code transformation workflows with new Roslyn recipes and a stable marker printer. - Streamlined conflict resolution, reducing merged-conflict surface area and avoiding autogenerated noise. - Safer, more automated release workflow with guarded publishing to GitHub and Maven repositories. - Better maintainability and usability through composite recipe aggregation for all packages. Technologies/skills demonstrated: - .NET 10 migration planning, package references, and build configuration. - Roslyn analyzers, code fixes, and custom C# recipe development. - Code transformation plumbing improvements and stable printer. - Merge conflict strategies and automation for release pipelines. - Automation of release publishing and artifact governance across GitHub and Maven. - Generation of composite, aggregated recipes to improve packaging usability.
January 2026
12 Commits • 5 Features
Jan 1, 2026January 2026 (openrewrite/rewrite-csharp) — Concise monthly summary focusing on delivering business value and technical excellence across platform readiness, code transformation, conflict resolution, and release automation. Key features delivered: - .NET 10 Migration Readiness and Compatibility Improvements: Updated package references and build configurations to target .NET 10.0; aligned with breaking changes guidance and prepared the codebase for the new runtime. Commits: d5a61ff09ccefb129546a2f94e7f0278c68c4710 (implementation). - Roslyn Recipes and Code Transformation Enhancements: Added new C# recipes, enhanced Roslyn analyzer and code fix, and improved code transformation plumbing including a stable marker printer. Commits: 0208ac6df368af4978afe6f6588b7c2799f849d1; 444173ef625fbf6dce4539f49feac7b1f4b7b9a2; 53d75af4ed917529198c6745c2c51779b9eb0b9f; 1d4b1e71783f0ae1bd7f046d6817a60299165f07. - Conflict Resolution Workflow Enhancements: Improve merge conflict handling, ignore autogenerated files from conflict merges, and remove outdated conflict-resolution components. Commits: 18311842b1901c53d44e76a5344980006f57d74b; f0dbc4387fd356dd85d624974d212a7fbdc520b9. - Release and Publish Automation Enhancements: Automate release publishing to GitHub and Maven local repositories with safeguards to publish only from main or appropriate contexts. Commits: 8790076c8372c9e4c38af3a9883a8e810f89de5c; f0409b1c214472a6626b72be933150c14e2aa465. - Composite Roslyn Recipes Aggregation: Add capability to generate a composite recipe file that aggregates all package recipes for better organization and usability. Commit: 89543d627c7c0629d5a6ea39b016891d8f6a5084. Major bugs fixed: - Fixed issue with generators in Roslyn Recipes. Commit: 53d75af4ed917529198c6745c2c51779b9eb0b9f. - Ignore autogenerated files from conflict merges to reduce spurious merge noise. Commit: 18311842b1901c53d44e76a5344980006f57d74b. - Marker printer stabilization and related fixes in transformation plumbing. Commit: 1d4b1e71783f0ae1bd7f046d6817a60299165f07. - Pre-release stability fixes and release-related guardrails. Commit: f0dbc4387fd356dd85d624974d212a7fbdc520b9. - Release publish safeguard to avoid artifact publishing from PR contexts. Commit: f0409b1c214472a6626b72be933150c14e2aa465. Overall impact and accomplishments: - Strengthened platform readiness for .NET 10, reducing runtime risk and accelerating adoption. - Improved stability and usability of code transformation workflows with new Roslyn recipes and a stable marker printer. - Streamlined conflict resolution, reducing merged-conflict surface area and avoiding autogenerated noise. - Safer, more automated release workflow with guarded publishing to GitHub and Maven repositories. - Better maintainability and usability through composite recipe aggregation for all packages. Technologies/skills demonstrated: - .NET 10 migration planning, package references, and build configuration. - Roslyn analyzers, code fixes, and custom C# recipe development. - Code transformation plumbing improvements and stable printer. - Merge conflict strategies and automation for release pipelines. - Automation of release publishing and artifact governance across GitHub and Maven. - Generation of composite, aggregated recipes to improve packaging usability.
December 2025
3 Commits • 2 Features
Dec 1, 2025December 2025 monthly summary for openrewrite/rewrite-csharp focused on delivering robust ASP.NET context handling, stabilizing C# 12 compatibility tests, and enhancing Roslyn-based code fix diagnostics. The work emphasizes business value by improving runtime reliability in ASP.NET Core apps, ensuring test stability with modern C# features, and providing clearer diagnostics for faster developer feedback.
3 Commits • 2 Features
Dec 1, 2025December 2025 monthly summary for openrewrite/rewrite-csharp focused on delivering robust ASP.NET context handling, stabilizing C# 12 compatibility tests, and enhancing Roslyn-based code fix diagnostics. The work emphasizes business value by improving runtime reliability in ASP.NET Core apps, ensuring test stability with modern C# features, and providing clearer diagnostics for faster developer feedback.
December 2025
November 2025
5 Commits • 3 Features
Nov 1, 2025November 2025: Delivered three core features that enhance migration tooling, static analysis, and platform compatibility for openrewrite/rewrite-csharp. 1) OpenAPI integration modernization with a new transformer and a code fix provider to migrate deprecated WithOpenApi calls to AddOpenApiOperationTransformer, enabling easier migrations and better compatibility. 2) Semantic analysis framework and analyzer tooling to track member access across method boundaries, plus a new guideline set for developing C# analyzers and code fixes. 3) Migration support for IActionContextAccessor to IHttpContextAccessor to achieve .NET 10.0 compatibility via an analyzer and code fix provider. Major bugs fixed/compatibility improvements focused on deprecated API usage and migration gaps, reducing manual refactor effort and risk. Overall impact: accelerates upgrade velocity, improves maintainability, and provides reusable tooling for automated migrations and code quality enforcement. Technologies/skills demonstrated: C#, Roslyn-based analyzers and code fixes, semantic analysis utilities, OpenAPI tooling, .NET 10.0 compatibility, and migration pattern development.
November 2025
5 Commits • 3 Features
Nov 1, 2025November 2025: Delivered three core features that enhance migration tooling, static analysis, and platform compatibility for openrewrite/rewrite-csharp. 1) OpenAPI integration modernization with a new transformer and a code fix provider to migrate deprecated WithOpenApi calls to AddOpenApiOperationTransformer, enabling easier migrations and better compatibility. 2) Semantic analysis framework and analyzer tooling to track member access across method boundaries, plus a new guideline set for developing C# analyzers and code fixes. 3) Migration support for IActionContextAccessor to IHttpContextAccessor to achieve .NET 10.0 compatibility via an analyzer and code fix provider. Major bugs fixed/compatibility improvements focused on deprecated API usage and migration gaps, reducing manual refactor effort and risk. Overall impact: accelerates upgrade velocity, improves maintainability, and provides reusable tooling for automated migrations and code quality enforcement. Technologies/skills demonstrated: C#, Roslyn-based analyzers and code fixes, semantic analysis utilities, OpenAPI tooling, .NET 10.0 compatibility, and migration pattern development.
October 2025
5 Commits • 2 Features
Oct 1, 2025Month 2025-10: OpenRewrite C# work centered on strengthening .NET 10 readiness and code-quality tooling, with targeted analyzers, project improvements, and automated modernization support. No explicit bug fixes documented in this period; primary value delivered through proactive analysis and maintainability gains.
5 Commits • 2 Features
Oct 1, 2025Month 2025-10: OpenRewrite C# work centered on strengthening .NET 10 readiness and code-quality tooling, with targeted analyzers, project improvements, and automated modernization support. No explicit bug fixes documented in this period; primary value delivered through proactive analysis and maintainability gains.
October 2025
September 2025
18 Commits • 4 Features
Sep 1, 2025OpenRewrite/CSharp team — September 2025 monthly summary. Focused on delivering scalable Roslyn-based recipe capabilities, enhancing code generation for Roslynator and cross-language Java recipe classes, and fortifying release and test infrastructures. The work is aligned with accelerating safe recipe-driven transformations across multiple solutions, improving build reliability, and enabling richer analytics (diff tracking) for changes.
September 2025
18 Commits • 4 Features
Sep 1, 2025OpenRewrite/CSharp team — September 2025 monthly summary. Focused on delivering scalable Roslyn-based recipe capabilities, enhancing code generation for Roslynator and cross-language Java recipe classes, and fortifying release and test infrastructures. The work is aligned with accelerating safe recipe-driven transformations across multiple solutions, improving build reliability, and enabling richer analytics (diff tracking) for changes.
August 2025
8 Commits • 3 Features
Aug 1, 2025August 2025 monthly summary for openrewrite/rewrite-csharp focused on delivering robust C# modeling and parsing improvements, expanding Roslyn-based recipe capabilities, and modernizing the build/test infrastructure. The work emphasizes maintainability, broader .NET target support, and reliable CI stability, delivering business value through safer code generation, faster recipe processing, and streamlined development cycles.
8 Commits • 3 Features
Aug 1, 2025August 2025 monthly summary for openrewrite/rewrite-csharp focused on delivering robust C# modeling and parsing improvements, expanding Roslyn-based recipe capabilities, and modernizing the build/test infrastructure. The work emphasizes maintainability, broader .NET target support, and reliable CI stability, delivering business value through safer code generation, faster recipe processing, and streamlined development cycles.
August 2025
July 2025
14 Commits • 4 Features
Jul 1, 2025July 2025 performance summary for openrewrite/rewrite-csharp: Delivered a major RPC Core overhaul with IPC enhancements, extended recipe and analyzer coverage, and release automation, while stabilizing the RPC surface and improving CI/CD workflows. These changes collectively enhanced cross-process communication reliability, expanded static analysis reach, and accelerated the end-to-end release process, driving developer productivity and business value.
July 2025
14 Commits • 4 Features
Jul 1, 2025July 2025 performance summary for openrewrite/rewrite-csharp: Delivered a major RPC Core overhaul with IPC enhancements, extended recipe and analyzer coverage, and release automation, while stabilizing the RPC surface and improving CI/CD workflows. These changes collectively enhanced cross-process communication reliability, expanded static analysis reach, and accelerated the end-to-end release process, driving developer productivity and business value.
June 2025
12 Commits • 4 Features
Jun 1, 2025June 2025 monthly summary for openrewrite/rewrite-csharp: Delivered cross-language Roslyn recipe execution and code generation enhancements, introduced a .NET reference assemblies library (Refasmer), established a Language Server RPC framework for remote analysis workflows, and strengthened CI/build/test infrastructure with Gradle integration and NuGet path/versioning improvements. Linux-specific issues were addressed to improve reliability in production environments. These efforts advance cross-language analysis capabilities, improve build reliability and test traceability, and unlock faster delivery of high-value features to customers.
12 Commits • 4 Features
Jun 1, 2025June 2025 monthly summary for openrewrite/rewrite-csharp: Delivered cross-language Roslyn recipe execution and code generation enhancements, introduced a .NET reference assemblies library (Refasmer), established a Language Server RPC framework for remote analysis workflows, and strengthened CI/build/test infrastructure with Gradle integration and NuGet path/versioning improvements. Linux-specific issues were addressed to improve reliability in production environments. These efforts advance cross-language analysis capabilities, improve build reliability and test traceability, and unlock faster delivery of high-value features to customers.
June 2025
May 2025
1 Commits • 1 Features
May 1, 2025May 2025 (2025-05) – Focused on advancing the Execution Plan Visualization UI for the openrewrite/rewrite-csharp repository. Implemented initial front-end scaffolding and committed work towards an interactive execution plan visualization/reporting UI to enable dynamic exploration of execution flows and better decision making. The work is staged as ongoing (WIP) with the initial commit documenting front-end setup. Impact: Lays the foundation for enhanced observability, faster root-cause analysis, and more informed decision making in execution workflows. Sets up a reusable UI pattern that can be extended with filtering, drill-downs, and reporting in upcoming sprints. Technologies/Skills demonstrated: HTML, JavaScript, jQuery, front-end UI development, UI/UX consideration for visualization, incremental delivery, cross-functional collaboration (tracking via commit reference).
May 2025
1 Commits • 1 Features
May 1, 2025May 2025 (2025-05) – Focused on advancing the Execution Plan Visualization UI for the openrewrite/rewrite-csharp repository. Implemented initial front-end scaffolding and committed work towards an interactive execution plan visualization/reporting UI to enable dynamic exploration of execution flows and better decision making. The work is staged as ongoing (WIP) with the initial commit documenting front-end setup. Impact: Lays the foundation for enhanced observability, faster root-cause analysis, and more informed decision making in execution workflows. Sets up a reusable UI pattern that can be extended with filtering, drill-downs, and reporting in upcoming sprints. Technologies/Skills demonstrated: HTML, JavaScript, jQuery, front-end UI development, UI/UX consideration for visualization, incremental delivery, cross-functional collaboration (tracking via commit reference).
April 2025
18 Commits • 2 Features
Apr 1, 2025April 2025 — OpenRewrite rewrite-csharp focused on delivering a robust, observable Recipe system alongside a strengthened CI/CD, build, and test infrastructure. The major outcomes include architectural refactors for recipe management and remote execution, substantial improvements to packaging and artifact handling, and a suite of CI/test enhancements to improve stability and observability. These changes enable safer automated deployments, clearer telemetry, and faster feedback loops, translating into lower risk releases and quicker delivery of business value.
18 Commits • 2 Features
Apr 1, 2025April 2025 — OpenRewrite rewrite-csharp focused on delivering a robust, observable Recipe system alongside a strengthened CI/CD, build, and test infrastructure. The major outcomes include architectural refactors for recipe management and remote execution, substantial improvements to packaging and artifact handling, and a suite of CI/test enhancements to improve stability and observability. These changes enable safer automated deployments, clearer telemetry, and faster feedback loops, translating into lower risk releases and quicker delivery of business value.
April 2025
March 2025
15 Commits • 4 Features
Mar 1, 2025March 2025 delivered substantial improvements to openrewrite/rewrite-csharp, including the covariant return type source generator and C# parser/visitor enhancements, alongside code formatting improvements. The CI/build pipeline was stabilized with remoting integration and Nuke-based automation, with enhanced test result reporting. The recipe system was merged into the main repo, adding new recipes and test projects; testing infrastructure was modernized, and cross-platform newline handling was fixed to improve formatting consistency across environments.
March 2025
15 Commits • 4 Features
Mar 1, 2025March 2025 delivered substantial improvements to openrewrite/rewrite-csharp, including the covariant return type source generator and C# parser/visitor enhancements, alongside code formatting improvements. The CI/build pipeline was stabilized with remoting integration and Nuke-based automation, with enhanced test result reporting. The recipe system was merged into the main repo, adding new recipes and test projects; testing infrastructure was modernized, and cross-platform newline handling was fixed to improve formatting consistency across environments.
January 2025
4 Commits • 2 Features
Jan 1, 2025January 2025: Key accomplishments for openrewrite/rewrite-csharp focused on delivering robust C# parsing and formatting improvements, adding implicit interface support for indexers, and preparing for release. Consolidated C# parsing/formatting across the LST parser, explicit-indexer parsing, and general parser/formatter enhancements including visitor-based parsing and refined operator/indexer/lambda printing. Implemented implicit interface implementation for indexers. Completed release readiness by bumping the version to 0.19.0 in Directory.Build.props. Overall, this work improves AST accuracy, reduces formatting drift, and accelerates downstream rule analysis and CI cycles. Technologies demonstrated include C#, AST parsing/printing, LST parser architecture, visitor pattern, and release engineering (Directory.Build.props).
4 Commits • 2 Features
Jan 1, 2025January 2025: Key accomplishments for openrewrite/rewrite-csharp focused on delivering robust C# parsing and formatting improvements, adding implicit interface support for indexers, and preparing for release. Consolidated C# parsing/formatting across the LST parser, explicit-indexer parsing, and general parser/formatter enhancements including visitor-based parsing and refined operator/indexer/lambda printing. Implemented implicit interface implementation for indexers. Completed release readiness by bumping the version to 0.19.0 in Directory.Build.props. Overall, this work improves AST accuracy, reduces formatting drift, and accelerates downstream rule analysis and CI cycles. Technologies demonstrated include C#, AST parsing/printing, LST parser architecture, visitor pattern, and release engineering (Directory.Build.props).
January 2025
December 2024
2 Commits • 2 Features
Dec 1, 2024December 2024 monthly summary for openrewrite/rewrite-csharp. Focused on advancing C# LSP parsing capabilities and delivering milestone readiness for the 0.17.0 release. This period emphasized feature delivery, release discipline, and groundwork to improve IDE integrations and downstream adoption.
December 2024
2 Commits • 2 Features
Dec 1, 2024December 2024 monthly summary for openrewrite/rewrite-csharp. Focused on advancing C# LSP parsing capabilities and delivering milestone readiness for the 0.17.0 release. This period emphasized feature delivery, release discipline, and groundwork to improve IDE integrations and downstream adoption.
November 2024
3 Commits • 1 Features
Nov 1, 2024November 2024 (2024-11) performance highlights for openrewrite/rewrite-csharp: Delivered extensive C# parser and source generator enhancements, introduced the Rewrite.Analyzers project for compile-time code generation, and fixed remote/CI test execution issues to stabilize automated validation. These efforts expand C# language coverage, improve transformation speed, and strengthen CI reliability, delivering measurable business value in faster, safer code changes.
3 Commits • 1 Features
Nov 1, 2024November 2024 (2024-11) performance highlights for openrewrite/rewrite-csharp: Delivered extensive C# parser and source generator enhancements, introduced the Rewrite.Analyzers project for compile-time code generation, and fixed remote/CI test execution issues to stabilize automated validation. These efforts expand C# language coverage, improve transformation speed, and strengthen CI reliability, delivering measurable business value in faster, safer code changes.
November 2024
October 2024
1 Commits • 1 Features
Oct 1, 2024Month: 2024-10 — OpenRewrite/C# module delivered key feature expansion and reliability improvements. Implemented C# Parser/Printer: Generic Type Constraints Support, enabling parsing and printing of generic constraints in C# code. This work also included targeted fixes to whitespace handling and overall code structure, boosting robustness of the parsing/printing pipeline. Impact: broader language feature coverage, more accurate code transformations, and reduced maintenance overhead for C# projects. Business value: safer refactorings, improved analysis pipelines, and higher confidence in automated code edits. Technologies/skills demonstrated: C#, AST/Parser/Printer, whitespace normalization, pipeline robustness, commit-driven development.
October 2024
1 Commits • 1 Features
Oct 1, 2024Month: 2024-10 — OpenRewrite/C# module delivered key feature expansion and reliability improvements. Implemented C# Parser/Printer: Generic Type Constraints Support, enabling parsing and printing of generic constraints in C# code. This work also included targeted fixes to whitespace handling and overall code structure, boosting robustness of the parsing/printing pipeline. Impact: broader language feature coverage, more accurate code transformations, and reduced maintenance overhead for C# projects. Business value: safer refactorings, improved analysis pipelines, and higher confidence in automated code edits. Technologies/skills demonstrated: C#, AST/Parser/Printer, whitespace normalization, pipeline robustness, commit-driven development.
Activity
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Quality Metrics
Correctness84.8%
Maintainability83.4%
Architecture82.4%
Performance74.0%
AI Usage24.2%
Skills & Technologies
Programming Languages
BashBatchC#CSharpGradleHTMLINIJavaJavaScriptJson
Technical Skills
.NET NuGet.NET.NET developmentAPI DesignAPI IntegrationAPI developmentASP.NET CoreAST ManipulationAST TraversalAST manipulationAbstract Syntax Tree (AST)Abstract Syntax Tree (AST) ManipulationAbstract Syntax Trees (AST)Backend Development
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