syntax_data: {"ast_node_type":"variable","tokens":[{"end":81,"kind":"keyword","start":0,"text":"let"}]}
source_snippet:                 let ptr_or_ref = if let [PlaceElem::Deref] = place.projection[..]
context_before:             ty::Slice(_elem_ty) => {
context_after:                     && let local_ty = self.local_decls[place.local].ty