Serializing/Deserializing multiple data structures into a single CSV file

[ThomasAlban]

I want to be able to serialize 2 data structures: The first is a Transform struct, and the second is a generic struct T: Serialize + Deserialize. Depending on some settings I only want to serialize certain parts of the Transform struct, so e.g. some may not serialize the scale/rotation. These settings are determined by the type T.

So, when serializing these structs:

Transform {
    position: Vec3,
    rotation: Vec3,
   scale: Vec3,
}
GenericStructPassedIn {
    first_field: f32,
    second_field: f32,
}
SettingsForThatGenericStruct {
    do_rotation: bool,
    do_scale: bool,
}

I want to end up with a csv that looks like this:

position_x,position_y,position_z,rotation_x,rotation_y,rotation_z,first_field,second_field
0.0,1.0,2.0,0.0,0.0,0.0,4.5,3.9,
...etc

And similarly, I want to be able to deserialize that csv and go back to the structs above. I've done some research but can't seem to find a way of doing this.
Any help appreciated!

[BurntSushi]

You could try defining a parent struct with each of your structs as fields and apply serde(flatten) to them. But the issue tracker is full of problems with serde(flatten), so I'm not sure how well that will work.

Otherwise, I would define a separate "wire" type that matches your CSV record format and use serde(try_from) and serde(into) to have serde do conversions for you automatically.