Derive Macro FromBytes

#[derive(FromBytes)]
{
    // Attributes available to this derive:
    #[nuts_bytes]
}

Derive macro implementation of the FromBytes trait.

This derive macro generates a FromBytes implementation for struct and enum types. union types are currently not supported.

Attributes

• #[nuts_bytes(map_from_bytes = $path)]

Calls the function $path on the deserialized value. The given function must be callable as fn<S: FromBytes, T, E: Into<Box<dyn std::error::Error + Send + Sync>>(S) -> std::result::Result<T, E>

If the function succeeds, the returned value is assigned to this field. An error is converted into a Error::Custom error, where the error (E) is attached to the Error::Custom variant.

• #[nuts_bytes(map = $module)]

Combination of map_from_bytes and map_to_bytes. The crate will use $module::from_bytes as the map_from_bytes function and $module::to_bytes as the map_to_bytes function.