Can't access any methods of GDScript classes (except .new()) unless you first cast them as Script or GDScript

[NotDaze]

Godot version

4.0.2

System information

Windows 11

Issue description

You can't use any methods of a class (except .new()) unless you explicitly cast it to Script or GDScript.

class Example:
	pass;

func _init():
	print(Example is GDScript); # true
	print((Example as GDScript).has_source_code()); # false
	print((Example as Script).has_source_code()); # false
	print(Example.has_source_code()); # error
	
	var typed_implicit := Example; # also doesn't work
	print(typed_implicit.has_source_code()); # error

There is also some other... strangeness going on.

func _init():
	var untyped = Example;
	
	# print(untyped.has_source_code()); # error
	# print(Example.has_source_code); # error
	print(untyped.has_source_code); # works??
	print(untyped.has_source_code.call()); # also works??
	print(Example["has_source_code"].call()); # also works

Likely related to #73140

Edit: You actually can't even access .new() outside of calling it.

func _init():
	
	print(Example.new()); # works, of course
	print(Example["new"]); # works
	print(Example.new); # error

Also, everything works out the same if Example is a class_name in its own file instead of an inner class.

Steps to reproduce

Attempt to access the methods of a GDScript-based class without first casting it to Script or GDScript.

Minimal reproduction project

MRP.zip

[YuriSizov]

Example in your example is neither Script nor GDScript, it's RefCounted (or Reference in 3.x).

print(Example is GDScript); # true

seems like an error to me, since it's not even a script class, it's an inner class.

[NotDaze]

Everything is still the same if Example is a class_name in a separate file. Also, print(Example.new().get_script()) prints a GDScript object, identical to what happens if Example is its own file. It appears that inner class objects themselves do extend GDScript.

[YuriSizov]

No, they don't. And if they somehow do, it's an error. If you don't specify any base type, RefCounted is used. But there is trickery to make it script-based types work that expose some of those GDScript methods, like new().

[NotDaze]

The object you get from Example.new() does not implement GDScript. Example itself absolutely does. I don't know if that's an error, but it is 100% what I am seeing.

[YuriSizov]

Yes, you are correct, of course. I got confused.