Recover raw values after losing the type

[IvanUkhov]

Hello,

I have a use case where a struct with a raw value gets converted into a Value, which then needs to be serialized to JSON. Upon conversion, RawValue gets downcast to a Map, which loses the special serialization of RawValue, resulting in a JSON containing an object with one entry whose key equals raw::TOKEN.

I am wondering if you would be willing to have code for recovering the “rawness.”

[dtolnay]

Thanks for the PR.

Could you give more detail about what your use case is doing to end up with a Value like this? serde_json::to_value should not be producing such a value, for example.

It would be better if the unit test could be more representative of that use case.

[IvanUkhov]

It was a good question that made me think a little bit harder. After going back and forth, I have decided to propose a similar change to async-graphql instead, which was the use case I mentioned:

async-graphql/async-graphql#1554