WIP unpacking of parameters.

src/main/java/carpet/script/argument/FunctionArgument.java

@@ -1,6 +1,7 @@
 package carpet.script.argument;
 
 import carpet.script.Context;
+import carpet.script.Fluff;
 import carpet.script.LazyValue;
 import carpet.script.ScriptHost;
 import carpet.script.bundled.Module;
@@ -94,4 +95,14 @@ public class FunctionArgument<T> extends Argument
 
         return new FunctionArgument<>(function, 0, args);
     }
+
+    public void checkArgs() {
+        function.checkArgs(args.size());
+    }
+
+    public List<Value> unpackArgs(Context c) {
+        List<Value> unpackedArgs = Fluff.AbstractFunction.unpackArgs((List<LazyValue>) args, c);
+        function.checkArgs(unpackedArgs.size());
+        return unpackedArgs;
+    }
 }