Roslyn is basically a compiler API for .NET. Take a look at this walkthrough [0] to see how to implement custom diagnostics and quick fixes that operate on AST

Roslyn is basically a compiler API for .NET. Take a look at this walkthrough [0] to see how to implement custom diagnostics and quick fixes that operate on AST level. [0]: https://social.technet.microsoft.com/wiki/contents/articles/26954.writing-diagnostic-with-code-fix-using-roslyn-net-compiler-platform.aspx https://social.technet.microsoft.com/wiki/contents/articles/...