syntax_data: {"ast_node_type":"other","tokens":[{"end":71,"kind":"keyword","start":0,"text":"(_,"}]}
source_snippet:         (_, Primitive::Float(Float::F64)) => offset += Reg::f64().size,
context_before:         (Primitive::Float(Float::F32), _) => offset += Reg::f32().size,
context_after:         (Primitive::Int(i, _signed), _) => offset += i.size(),