# Function rustc_trait_selection::traits::get_vtable_index_of_object_method

source ·

    pub fn get_vtable_index_of_object_method<'tcx>(
        tcx: TyCtxt<'tcx>,
        vtable_base: usize,
        method_def_id: DefId
    ) -> Option<usize>

Expand description

Given an upcast trait object described by `object`, returns the index of the method `method_def_id` (which should be part of `object.upcast_trait_ref`) within the vtable for `object`.