Roslyn – (awesome) open source C# compiler

Introduction to the new open source C# compiler and features.

Transcript

1. Roslyn – (awesome) open source C# compiler Toni Petrina Ekobit d.o.o. @to_pe toni.petrina@gmail.com
3. Agenda • Introduction • Awesome things • Awesome thing 1 • Awesome thing 2 • Awesome thing 3 • ... • Conclusion
4. What is Roslyn?
5. Core .NET Next gen JIT (“RyuJIT”) SIMD Runtime Compilers .NET Compiler Platform (“Roslyn”) Languages innovation Windows Desktop Azure and Windows Server Universal projects .NET Native ASP.NET updates Windows Convergence Native compilation Cross-devices Xamarin partnership Web apps .NET support for Azure Mobile Services Cloud Services Openness Windows Store iOS and Android .NET in devices and services
6. Core .NET Next gen JIT (“RyuJIT”) SIMD Runtime Compilers .NET Compiler Platform (“Roslyn”) Languages innovation Windows Desktop Azure and Windows Server Universal projects .NET Native ASP.NET updates Windows Convergence Native compilation Cross-devices Xamarin partnership Web apps .NET support for Azure Mobile Services Cloud Services Openness Windows Store iOS and Android .NET in devices and services
7. What is a compiler? • A black box • „It does stuff” • It works „Black box” Source code Assets Binary output
8. What is it good for • Parsing • Validating • Semantics • Code rejection
9. Reimagining of the C# and VB.NET compilers • Managed code this time • Turn into API • Compiler as a Service • Building blocks for the IDE, tools • Open source (Apache v2) • http://roslyn.codeplex.com
10. A thing: Roslyn compiler
11. Adding (or removing) language features • Create your own C#++ • Additional language constructs • Improve existing ones • Fork Roslyn first at http://roslyn.codeplex.com
12. A thing: Language features
13. Danger • Don’t do this for your project/company • Bad for C# culture • Can create DSL variants which you have to learn for particular company
14. Basic APIs
15. Compiler APIs • Don’t depend on Visual Studio • Syntactic and semantic model for each phase • Immutable
16. Also part of the same API • Diagnostic APIs • UI optional • Integrates with other tools (MSBuild, FxCop, StyleCop, etc) • Can be integrated into IDE to give red squiggles or to stop build • Scripting APIs • REPL • Currently MIA • Will return in the future • Not part of the .NET Compiler Platform at the moment
17. A thing: Diagnostics
18. A thing: Refactoring
19. Workspace API • Code analysis • Refactorings • No dependencies on Visual Studio • Tools: • Find All References • Formatting • Code Generation APIs
20. How does it all tie together?
21. How Roslyn sees your code?
22. A thing: Refactorings
23. A thing: REPL
24. A thing: custom editor
25. Honorable mentinos • Scriptcs - http://scriptcs.net/ • Reference Source: • .NET - http://referencesource.microsoft.com/ • Roslyn: http://source.roslyn.codeplex.com/ • Ref12 – jump from source to reference source • Extension: http://visualstudiogallery.msdn.microsoft.com/f89b27c5- 7d7b-4059-adde-7ccc709fa86e • Source code: https://github.com/SLaks/Ref12 • C# Pad – execute C# code online • http://csharppad.com/
26. Who is it for, actually? • Developers • Integrate Roslyn into your own flow • Partners • Create, share and sell extensions and tools • Visual Studio team • Visual Studio experience • Everyone, really • Open source
27. Links • http://roslyn.codeplex.com • Official Roslyn • http://github.com/mono/roslyn • Mono port