syntax_data: {"ast_node_type":"other","tokens":[{"end":77,"kind":"keyword","start":0,"text":"top_level_tmod_enum!"}]}
source_snippet:         top_level_tmod_enum! { @parse {}, (user_value){}; $($($optinfo)*|)* }
context_before:     ($( {$($optinfo:tt)*} ),* $(,)*) => {
context_after:     };