dotnet/roslyn

Welcome to the .NET Compiler Platform ("Roslyn")

Roslyn provides open-source C# and Visual Basic compilers with rich code analysis APIs. It enables building code analysis tools with the same APIs that are used by Visual Studio.

C# and Visual Basic Language Feature Suggestions

If you want to suggest a new feature for the C# or Visual Basic languages go here:

• dotnet/csharplang for C# specific issues
• dotnet/vblang for VB-specific features
• dotnet/csharplang for features that affect both languages

Contribute!

Some of the best ways to contribute are to try things out, file bugs, and join in design conversations.

Questions

A great way to get started is to ask some questions!

• Start with a question on discussions
• You can also join in on the design discussions on gitter or discord

See if your issue is already being worked on! (Add your own votes using the 👍 reaction)

• IDE
• Compiler

Vote in the Backlog! (Add your own votes using the 👍 reaction)

• IDE Bugs
• IDE Features
• Compiler Bugs
• Compiler Features

Find a bug to fix! (Add your own votes using the 👍 reaction)

• First read this guide: How to Contribute
• Building, testing and debugging the sources
• Top Bugs
  • IDE
  • Compiler

Find a feature to implement! (Add your own votes using the 👍 reaction)

• IDE
• Compiler

Getting started with the Roslyn APIs

If you want to get started using Roslyn's APIs to analyzer your code take a look at these links:

• Roslyn Architecture Overview
  • Syntax APIs
  • Semantic APIs
  • Workspace APIs
• Tutorial: Write your first analyzer and code fix
• Useful Tools
  • Syntax Visualizer Tool
  • Syntax Quoter Tool
  • Browse the source with the enhanced source view

The latest pre-release builds are available from the following public NuGet feeds:

• Compiler: https://pkgs.dev.azure.com/dnceng/public/_packaging/dotnet-tools/nuget/v3/index.json
• IDE Services: https://pkgs.dev.azure.com/azure-public/vside/_packaging/vssdk/nuget/v3/index.json
• .NET SDK: https://pkgs.dev.azure.com/dnceng/public/_packaging/dotnet5/nuget/v3/index.json

Continuous Integration status

Desktop Unit Tests

CoreClr Unit Tests

Integration Tests

Misc Tests

This project has adopted the .NET Foundation Code of Conduct.

.NET Foundation

This project is part of the .NET Foundation along with other projects like the .NET Runtime.