If you need the declaration of the method that you are calling, you can get that as follows. In the first step, you find out what method it is that is being called: var methodSymbol = context .SemanticModel .GetSymbolInfo(invocation, context.CancellationToken) .Symbol as IMethodSymbol; Remember that there are various reasons why the methodSymbol may be null … Read more
Compile time re-writing isn’t directly supported by Roslyn today, but syntactic and semantic transformations definitely are. In fact, take a look at the “ImplementNotifyPropertyChanged” sample included in the CTP to see something of what you want to do. The sample is implemented as a design time transformation in and IDE feature, but you can extract … Read more
This is effectively a duplicate of the answer that @stuartd linked, so I’m not going to go into super deep details here. But the root of the matter is that this is neither a language bug nor a compiler bug, but it’s intended behavior exactly as implemented. We track the null state of a variable. … Read more
For the compilation step, you have a couple of options: You can reference the Microsoft.Net.Compilers NuGet package on a per-project basis to use that version of the compilers. You can install the Microsoft Build Tools package that is part of the VS 2015 CTP package without installing all of VS. However, as @MrHinsh notes, these … Read more
Yes, it is possible to compile a single file with csc or vbc compilers in .NET Core. To invoke the Roslyn compiler directly it is necessary to use the command line driver csc.{exe|dll} and since Roslyn in contrast to the old csc.exe does not reference mscorlib.dll implicitly it is necessary to pass a reference to … Read more
I’ve just faced the same problem. When you create a new web project, two nuget packages automatically added to your project. If you remove them, your problem should be solved. Package names are: “Microsoft.CodeDom.Providers.DotNetCompilerPlatform” and “Microsoft.Net.Compilers“.
Update: March 2018 Word of caution, NuGet version 1.0.6 … 1.0.8 will not copy the /roslyn folder to the build output directory on non-web projects. Best stick with 1.0.5 https://github.com/aspnet/RoslynCodeDomProvider/issues/38 Run-time compilation using C#6 features requires a new compiler, as @thomas-levesque mentioned. This compiler can be installed by using the nuget package Microsoft.CodeDom.Providers.DotNetCompilerPlatform. For desktop … Read more
First off, it is important when analyzing these issues to make a minimal reproducer, so that we can narrow down where the problem is. In the original code there are three red herrings: the readonly, the static and the Nullable<T>. None are necessary to repro the issue. Here’s a minimal repro: struct N<T> {} struct … Read more
I have created a sample for you to work with. You need to tweak it to use the run time for .Net 4.6 so that CSharp6 version is availble to you. I have added little details so that you can choose the options of compilations. Changes required – Change the path of runtime to target … Read more