syntax_data: {"ast_node_type":"other","tokens":[{"end":51,"kind":"keyword","start":0,"text":"ty::FloatTy::F16"}]}
source_snippet:                 ty::FloatTy::F16 => Some(sym::f16),
context_before:             ty::Float(f) => match f {
context_after:                 ty::FloatTy::F32 => Some(sym::f32),