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provide_derive_macro_expansion

Function provide_derive_macro_expansion 

Source
pub(crate) fn provide_derive_macro_expansion<'tcx>(
    tcx: TyCtxt<'tcx>,
    key: (LocalExpnId, &'tcx TokenStream),
) -> Result<&'tcx TokenStream, ()>
Expand description

Provide a query for computing the output of a derive macro.