syntax_data: {"ast_node_type":"other","tokens":[{"end":44,"kind":"keyword","start":0,"text":"match"}]}
source_snippet:                 match a.layout.size.bits() {
context_before:             BackendRepr::ScalarPair(..) | BackendRepr::Memory { sized: true } => {
context_after:                     8 => a.cast_to(Reg::i8()),