syntax_data: {"ast_node_type":"other","tokens":[{"end":92,"kind":"keyword","start":0,"text":"mir::StatementKind::Assign(box"}]}
source_snippet:                 mir::StatementKind::Assign(box (lhs, mir::Rvalue::Discriminant(enum_place)))
context_before:             match statement.kind {
context_after:                     if lhs == discr =>