Could `godot_codegen::conv::to_pascal_case` be made pub?

[SomeRanDev]

I'm writing some build.rs code generation using information from extension_api.json, but I'm having some difficulty determining the Rust struct name of a Node from its Godot counterpart.

Using godot_codegen::models::json::load_extension_api seems like overkill for my simple build script, is there any chance godot_codegen::conv::to_pascal_case could be made public for uses like this? Or maybe there's a method I'm missing that could do this?

EDIT: special_cases::is_godot_type_deleted would also be really nice to have. Hmm... maybe there could be a pub function that returns a mapping of GDScript -> Rust names that are available, so you can get the conversions and check if they're deleted?

[Yarwin]

First of all, that's an XY problem – what are you trying to achieve?

---

Secondly, as per bromeon comment: #1405 (comment) – I think we should add an option to provide list of included/exported classes as an environment variable instead 🤔.

[SomeRanDev]

First of all, that's an XY problem – what are you trying to achieve?

Ahh apologies, I didn't want to fill the issue with a long-winded description of my use case. I'm generating Rust code in a build.rs file to automate adding components in an ECS system. Given a Gd<Node> at runtime, I'd like to generate a component for the Node's class and all of its super-classes.

So I'd like to generate code like this:

// Simplified WIP example with just Node2D
fn add_components(node: &Gd<Node>, entity: MyEntity) {
    match n.get_class().to_string().as_str() { // str match just to keep this example simple
        "Node2D" => {
            entity.add(Component::<Node2D>::default());
            entity.add(Component::<CanvasItem>::default());
            entity.add(Component::<Node>::default());
        }
        // Repeat for every node class
    }
}

I'm getting a list of nodes and their super classes at build-time using extension_api.json, but maybe there's a way to do this entirely in gdext? I've tried to reword the original post to reflect this a little better.

[Bromeon]

Could godot_codegen::conv::to_pascal_case be made pub?

Note about public API in docs. The godot-codegen crate is currently not a public interface. As such, we don't give any guarantees or tailor it to user needs.

What you want to achieve -- compile-time reflection/information about Godot hierarchy -- is a fair request, but goes beyond just making a few functions public. It would need a proper design proposal, and I'm not even sure it's fully in scope for godot-rust, as we'd have to maintain and extend such an interface as well.

So, before just exposing random functions, try to get as far as possible with existing (even if undocumented) functionality, and maybe come up with a more concrete list of things that would be useful to have. Then we can discuss it from there 🙂