Source Generator: information about referencing project?

Question

I started playing with the C# source generators.

What I want is to kick off a git describe --tags --long process and populate a static GitVersion class with the current tag and hash code as properties.

The problem is, that I have no information about the directory of the referencing project so I cannot know where to run the git process. I cannot find any useful information in the GeneratorExecutionContext argument of the Execute function.

AppDomain.CurrentDomain points to the csc.exe process so I guess there is no way to know it's there?

Answer 1

I ended up using:

public void Execute(GeneratorExecutionContext context) {
     var mainSyntaxTree = context.Compilation.SyntaxTrees
                          .First(x => x.HasCompilationUnitRoot);

     var directory = Path.GetDirectoryName(mainSyntaxTree.FilePath);