[4.x] The node signal preview box does not show the type of the signal parameter.

[Life4gal]

Godot version

v4.0.alpha.custom_build [d9e974c]

System information

Windows 11 & OpenGL ES 3.0 & Renderer: NVIDIA GeForce RTX 3060/PCIe/SSE2

Issue description

Since 4.0 (or since this commit?), GDScript supports setting types for signal parameters, which is great, and I think setting types for parameters somehow makes the code easier to understand.

However, after reading some code about signal, I found that this type is not actually used, and the setting type is only supported because the parameter handling of signal is consistent with the normal function parameter handling.

This leads to the result shown in the picture below.

It can be seen that the type of the parameter shows a var, which is too puzzling.

Steps to reproduce

To attach a GDScript to any node, add a custom signal, such as:

signal test_signal(arg1: int, arg2, arg3: float)

Click on the node to view the signal preview box of the node.

Minimal reproduction project

Not very necessary.

[Rindbee]

In fact, until in e01b828, the parameters of custom signals do not support typed parameters. Maybe it could be written in that way, but the parameter type doesn't resolve to the specified type. You can emit other Variant values for the parameter specified as int.

extends Control

signal test(number : int)

func _ready() -> void:
	test.connect(_test)
	test.emit("test!")

func _test(arg):
	print(arg) # Prints "test!" with no error.

[KoBeWi]

Looks fixed in 4.4