Add tons of builtin helpers and array operations.

object/builtin_exit.go

@@ -1,17 +1,17 @@
 package object
 
-import "os"
-
 // Exit ...
 func Exit(args ...Object) Object {
+	var status int
 	if len(args) == 1 {
 		if args[0].Type() != INTEGER_OBJ {
 			return newError("argument to `exit` must be INTEGER, got %s",
 				args[0].Type())
 		}
-		os.Exit(int(args[0].(*Integer).Value))
-	} else {
-		os.Exit(0)
+		status = int(args[0].(*Integer).Value)
 	}
+
+	ExitFunction(status)
+
 	return nil
 }