Get Function Argument Type(s)

[CrezyDud]

Describe the project you are working on

Console where you can call functions from ingame

Describe the problem or limitation you are having in your project

i need to get the argument types
preferably without creating an array and hardcoding that stuff in it

Describe the feature / enhancement and how it helps to overcome the problem or limitation

can't do that know (as far as i know)
would be happy for this, so i wouldn't have to hardcode that in some array

Describe how your proposal will work, with code, pseudo-code, mock-ups, and/or diagrams

func clear(bg: Color)
 blabla

func entered_command(commands)
 blabla
 if command in self:
  for i in get_func_arg_types(command).size():
   if args[i] !is get_func_arg_type(command, i)
    return
 callv(command, args)

If this enhancement will not be used often, can it be worked around with a few lines of script?

not as far as i know
other than some shiddy spereate array

Is there a reason why this should be core and not an add-on in the asset library?

no other way of doing it as far as i know
without extra manual work every time i add/modify a function

[CrezyDud]

so, in total all i need is:
array: get_func_arg_types(function: string)
idk: get_func_arg_type(function: string, argument: int) <- argument: int starts at 0

get_func_arg_type(function: string, argument: int) isn't really needed,
because we could just do get_func_arg_types(function: string)[argument: int]

[Xrayez]

Such ability already exists via ClassDB and/or Script API:

extends Node2D

func _ready():
	for method in get_script().get_script_method_list():
		if method.name == "clear":
			print(method.args)
			assert(method.args[0].type == TYPE_COLOR)

func clear(bg: Color):
	pass

However, this doesn't seem to provide proper information about method signatures ("bg" variable is empty), may be a bug. But this properly returns the type.

Note that when you print the entire array, it may not print the info properly for some reason, which may be a bug in data representation (which requires evaluating/stringifying nested data structures recursively).

Works in Godot 3.x for me.

[CrezyDud]

i used to use get_method_list()
which seems to be different from get_script_method_list()
lol

[CrezyDud]

this worked so far

[Xrayez]

Yeah, get_method_list() would return method info for the built-in class only. I kind of agree that there's a potential discrepancy for built-in vs custom/scripted classes, see proposals like #2804.

[Xrayez]

In cases like this you can infer the required number of args required_argcount = argcount - default_argcount

But looks like get_script_method_list() does not populate default_args (always empty), again likely a bug.

[Xrayez]

typeof(args[i]) always returns 4

Expected, because typeof() is meant to be used on object instances, but args only provides type information. You should use args[i].type in this case and see if it matches with any TYPE_* constants at global scope.

For the record, it wasn't me who marked your previous message as off-topic.

[CrezyDud]

For the record, it wasn't me who marked your previous message as off-topic.

that was me, trying to keep this clean, yet my problems solved

[CrezyDud]

Invalid index 'type' (on base: 'String')

[KoBeWi]

As discussed above, this already exists, but is bugged.
I found some old issue: godotengine/godot#33624
Closing.