Working with typetag for xs:choice / variant types?

[furrz]

This is a question, rather than an issue.

I'd like to use typetag or a similar crate along with quick-xml, to deserialize a sequence of varying elements without hardcoding all the possible variants in an enum.

<Data>
    <Foo a="abc" />
    <Foo a="def" />
    <Bar b="123" c="456">
        <BarChild />
    </Bar>
    <!-- other typetag'd elements can appear here -->
</Data>

Is there some way to make this work with typetag and quick-xml?

I tried:

#[derive(Deserialize)]
pub struct Document {
    #[serde(rename = "$value")]
    pub items: Vec<Box<dyn SceneLoadable>>,
}

#[typetag::deserialize]
pub(crate) trait SceneLoadable {}

But after encountering an element, it proceeds to try and interpret the attributes on that tag as type info, e.g.: Unknown variant @id, expected one of ..... (Edit: my apologies to the github user with username id, I mentioned them by mistake. Oops!)

[Mingun]

Well, you should expand derive macros and debug why this is happened. Think you are the most interested person here to do this