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Awesome Roslyn – Massive Collection of Resources


Awesome Roslyn

Curated list of Roslyn books, tutorials, open source projects, analyzers, code fixes, refactorings, and source generators.

Roslyn, officially named .NET Compiler Platform, is a set of open-source compilers and code analysis APIs for C# and Visual Basic .NET languages.

Contents

Books

Awesome books to give you a good start with Roslyn.

  • Roslyn SuccinctlyFree e-book by Alessandro Del Sole and the perfect book to start with. Explains Roslyn APIs and afterward focuses on writing analyzers and refactorings.
  • .NET Development Using the Compiler API – Book by Jason Bock. Besides analyzers and refactorings, it also explains the scripting API and provides an interesting reflection on the future of the Compiler API.
  • Roslyn Cookbook – Book by Manish Vasani, a member of the Roslyn analyzers team. After covering analyzers, refactorings, and scripting in detail, the book goes in-depth explaining how to develop new C# language features and contribute to the Roslyn source code.

Tutorials

Awesome online tutorials to help you write your first analyzers, code fixes, and source generators.

Open Source Projects

Awesome open source projects built on top of Roslyn.

  • Bridge – C# to JavaScript transpiler. Write modern mobile and web apps in C# and run them anywhere in JavaScript.
  • Code Converter – C# to VB.NET and VB.NET to C# transpiler.
  • CodeAnalysis.CSharp.PatternMatching – Intuitive pattern matching for Roslyn syntax trees. Simplifies C# syntax and semantic analysis.
  • CodeGeneration.Roslyn – Roslyn-based Code Generation during a build with design-time support.
  • dotnet-script – Runs C# scripts from the .NET CLI, defines NuGet packages inline and edit/debugs them in VS Code.
  • FlubuCore – Cross platform build automation tool for building projects and executing deployment scripts using C# code.
  • MirrorSharp – Online C#, VB.NET, and F# code editor. Features code completion, method signature help, quick fixes, and diagnostics.
  • OmniSharp – Enables a cross platform .NET development in the editor of your choice. A family of open source projects, each with one goal: To enable a great .NET experience in your editor of choice.
  • roslyn-linq-rewrite – Compiles C# code by first rewriting the syntax trees of LINQ expressions using plain procedural code. This increases performance by minimizes heap allocations and dynamic dispatch.
  • RoslynPad – Cross-platform C# editor. Features code completion, method signature help, quick fixes, and diagnostics.
  • RoslynQuoter – Online tool that for a given C# program generates syntax tree API calls that construct syntax tree of that program.
  • scriptcs – Turns C# into a powerful scripting tool. Features C# REPL, installation of NuGet packages, and execution of scripts with a single line of code.
  • Scripty – Tool to use Roslyn-powered C# scripts for code generation. You can think of it as a scripted alternative to T4 templates.
  • Sharpen – Visual Studio extension that intelligently introduces new C# language features into your existing code base.
  • SharpLab – .NET code playground. Displays intermediate steps and results of code compilation. Shows the code as compiler sees it. Allows selecting different branches and versions of Roslyn. Runs C#, VB.NET, and F# code in the browser.
  • Testura.Code – Wrapper around the Roslyn API used for generation, saving, and compiling C# code. Provides methods and helpers to generate classes, methods, statements, and expressions.
  • Uno SourceGenerator – C# source code generator based on a project being built, using all of its syntactic and semantic model information.

Open Source Analyzers, Code Fixes, and Refactorings

Awesome open source analyzers, code fixes, and refactorings.

  • .NET Analyzers – GitHub organization for the development of Roslyn analyzers. Various repositories within the organization cover analyzers for ASP.NET Core, WPF, IDisposable, usages of System.Reflection, etc.
  • .NET Compiler Platform (“Roslyn”) Analyzers – Diagnostic analyzers developed by the Roslyn team. Initially developed to help flesh out the design and implementation of the static analysis APIs. The analyzers cover code quality, .NET Core, desktop .NET Framework, comments in code, and more.
  • Code Cracker – Analyzer library for C# and VB.NET. Offers diagnostics in many categories like performance, coding styles, as well as some basic refactorings.
  • CSharpGuidelinesAnalyzer – Reports diagnostics for C# coding guidelines (https://csharpcodingguidelines.com/).
  • ErrorProne.NET – Set of analyzers and code fixes focusing on the correctness and performance of C# programs. Inspired with Google’s Error Prone.
  • Mapping Generator – Code fix that generates arbitrary complex object-object mappings. It recognizes out of the box a large number of scenarios where mappings are used. A design-time alternative to AutoMapper.
  • Refactoring Essentials for Visual Studio – Refactorings, analyzers and code fixes for C# and VB.NET.
  • Roslyn Clr Heap Allocation Analyzer – C# heap allocation analyzer that can detect explicit and many implicit allocations like boxing, closures, implicit delegate creations, etc.
  • Roslynator – Collection of 190+ analyzers and 190+ refactorings for C#. Covers coding style, code readability and simplification, removing redundancies, fixing compiler errors, and many more.
  • SonarC# – Static code analyzer for C# language used as an extension for the SonarQube platform.
  • StyleCop Analyzers for the .NET Compiler Platform – Port of StyleCop rules to Roslyn.
  • VSDiagnostics – Collection of code-quality analyzers. Covers usages of async methods, flags enums, best practices in exception handling as well as many other code-quality checks.

Libraries and Frameworks for Testing Analyzers, Code Fixes, and Refactorings

Awesome libraries and frameworks for testing analyzers, code fixes, and refactorings.

  • Microsoft.CodeAnalysis.Testing – Library for testing analyzers and code fixes with NUnit, xUnit and MSTest frameworks. A part of Roslyn SDK.
  • RoslynTestKit – Lightweight framework for writing unit tests for analyzers, code fixes, refactorings, and completion providers. It’s unit testing framework agnostic.

Source Generators

Awesome (but mostly experimental at the moment, because .NET 5.0 and C# 9.0 are still in preview) source generators and open source projects that internally use source generators.

  • DpDtInject – Proof-of-concept of a dependency injection container that transfers huge piece of resolving logic to the compilation stage. Offers additional compile-time safety and fast runtime resolution.
  • JsonSrcGen – Reflection-free JSON serializer. Allows extremely fast JSON processing by generating reflection-free serializers at the compile time.
  • Source Generator Playground – Online application that lets you experiment with source generators. Perfect for learning and testing your ideas. Write your own source generator or learn from built-in examples and see the generated output.
  • StrongInject – Compile-time dependency injection container. Compile-time checked, reflection-free and runtime code generation free, thus fast and app-trimming-friendly.
  • StructPacker – Low-level, lightweight and performance-focused serializer for C# struct types. Auto-generates C# serialization code to achieve peak runtime performance and efficiency.
  • Svg to C# Source Generators – SVG to C# compiler. Compiles SVG drawing markup to C# using SkiaSharp as rendering engine.
  • WrapperValueObject – Creates boilerplate free wrappers around types. Especially useful for creating strongly typed wrappers around primitive types.

Blog Posts and Articles

Awesome blog posts and online articles covering various topics like performance, Roslyn history, internals and similar.

Talks

Awesome public talks about Roslyn.

  • The Power of Roslyn – Great talk by Kasey Uhlenhuth at NDC Oslo 2018 covering Roslyn essentials and APIs and tools for building code analyzers and fixes.

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