How to implement a Serde of proc_macro (2)

help
1

Could not find easily a json serializer of rust asts. Maybe you know of one?
I am working on a json serializer of the syn parser to not only dump in debug mode but in a parsable json serde. Syn uses proc_macro2 which uses proc_macro which uses compiler internals. I have the feeling that fallback in proc_macro2 might provide the non-native impl but my rust skills are still not up to speed. Can you help me find or implement json serde for the proc_macro internals like TokenStream,Token, and Identifier that use internal structures?

2

Here is the first version of the json output with the missing identifiers

Here is the change to the syn to dump out the data Feature/json serde by jmikedupont2 · Pull Request #1 · meta-introspector/syn · GitHub

3

The updated version implements the to_serialize

pub fn serialize_ident<S>(ident: &proc_macro2::Ident, serializer: S) -> std::result::Result<S::Ok, S::Error>
where
    S: serde::Serializer,
{
    let str_repr = ident.to_string();
    serializer.serialize_str(&str_repr)
}

and used like this

#[serde(serialize_with = "crate::serialize::serialize_ident")]
        pub ident: Ident,
4

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