Define __MAIN_NS__ in RunCommand

[Chemaclass]

🤔 Background

Issue: #523

💡 Goal

To be able to ignore phel code when running tests or compiling code, especially code that involves I/O operations.

🔖 Changes

• Introduce a new global magic constant __MAIN_NS__ that will return the value of the main namespace that it's being executed

🧪 For example

(ns phel\game)

(if (= __MAIN_NS__ "phel\\game")
  (loop []
    (play-hand)
    (println)
    (recur)))

[jenshaase]

Doesn't this do basically do the same as the *compile-mode* flag (maybe this is a bit undocumented):

(when-not compile-mode
(loop []
(play-hand)
(println)
(recur)))

[Chemaclass]

Oh, gosh, of course it's the same"! I forgot about it, but it's exactly doing what I wanted. So I will close this PR as there is no benefit on it for now 😄

(when-not *compile-mode*
  (try
    (main)
    (catch RuntimeException e
      (println)
      (println (php/-> e (getMessage))))))