Function rustc_const_eval::lookup_const_by_id [] [src]

pub fn lookup_const_by_id<'a, 'tcx: 'a>(tcx: TyCtxt<'a, 'tcx, 'tcx>,
                                        def_id: DefId,
                                        substs: &'tcx Substs<'tcx>)
                                        -> Option<(&'tcx Expr, &'a TypeckTables<'tcx>)>
🔬 This is a nightly-only experimental API. (rustc_private)

substs is optional and is used for associated constants. This generally happens in late/trans const evaluation.