Derive Macro enso_prelude::CloneRef

#[derive(CloneRef)]
{
    // Attributes available to this derive:
    #[clone_ref]
}

Derives CloneRef implementation for given type. It performs clone_ref on every member field. The input type must implement Clone and its every field must implement CloneRef.

For generic types no bounds are introduced in the generated implementation. To customize this behavior user might add #[clone_ref(bound="…")] attribute. Then the generated implementation will use the provided bounds.

Moreover, for a given struct X this macro generates also impl From<&X> for X which uses CloneRef under the hood. The semantics of CloneRef makes each object to naturally provide transformation from reference to an owned type.

Supported inputs are structs (unit, named, unnamed), enums (with unit, named, unnamed and no variants at all). Unions are currently not supported.