Improvement expected behaviour for #[export]

[snatvb]

If user tries convert @export_file("*.txt") to Array:

extends Node

class_name NewScript

@export_file("*.txt") var files: Array[String]

LSP shows error: And in console:

But if user does it in rust:

#[derive(GodotClass)]
#[class(init, base=Node)]
struct Foo {
    base: Base<Node>,
    #[export(file)]
    resources: Array<GString>,
}

#[godot_api]
impl INode for Foo {}

It leads to this:

For user it's unexpected and it would be rather to notify about incorrect annotation.

Reprocase: godot-rust-repro.zip

Discord source conversation

[snatvb]

https://github.com/godotengine/godot/issues/93366 Created on Godot, if there is no point in improving the macro, you can close it down

[lilizoey]

godotengine/godot#93366 Created on Godot, if there is no point in improving the macro, you can close it down

i dont see why this issue should be brought up to godot

[snatvb]

i dont see why this issue should be brought up to godot

Bromeon said that it's issue of Godot that it doesn't notify about incorrect export property

[Bromeon]

Sorry about the confusion here, tried to clarify it on the Godot issue.

I'm not sure whether Godot performs the same validations for @export_* annotations in GDScript as it does for GDExtension property hints. If it doesn't (and there is no change planned), then we would need to replicate them on Rust side, which could be quite laborious and maintenance-intensive.