Comment by codr7 | Hacker News Reader

Comment by codr7 | Hacker News Reader

Parent Full thread

Given how easy it is to expose functionality from the host language using existing facilities [0], and how complicated a reflection based FFI could get; I would rather not, at least not right now. It's also one of those decisions that will drastically limit my choices for future evolution of the implementation.

The general idea is to use both languages together, as complements; not calling one from the other.

https://github.com/codr7/sharpl/blob/main/src/Sharpl/Libs/Co...

Ah, this is actually what I had in mind by "interop". So from C# I can evaluate some Lisp code and then test that the result is `PairType` (for example)? Maybe this is so obvious it goes without saying, but I didn't see any examples of that.

I understand.

Sure thing, VM.Eval("your code") returns a value if one is produced.

  if (vm.Eval("1:2") is Value v and v.Type == Libs.Core.Pair) {
    Console.WriteLine("Pair: " + v.Cast(Libs.Core.Pair));
  }

Have a look in the main Program.cs to see how to get a VM up and running.

Reply on news.ycombinator.com