syntax_data: {"ast_node_type":"other","tokens":[{"end":44,"kind":"keyword","start":0,"text":"ty::Char"}]}
source_snippet:             ty::Char => Size::from_bytes(4),
context_before:             ty::Bool => Size::from_bytes(1),
context_after:             ty::Int(ity) => Integer::from_int_ty(&tcx, ity).size(),