syntax_data: {"ast_node_type":"other","tokens":[{"end":83,"kind":"keyword","start":0,"text":"(RegPassKind::Float(f),"}]}
source_snippet:         (RegPassKind::Float(f), RegPassKind::Unknown) => Some(FloatConv::Float(f)),
context_before:         (RegPassKind::Float(l), RegPassKind::Float(r)) => Some(FloatConv::FloatPair(l, r)),
context_after:         _ => None,