syntax_data: {"ast_node_type":"function","tokens":[{"end":77,"kind":"keyword","start":0,"text":"fn"}]}
source_snippet:     fn minval_literal(&mut self, span: Span, ty: Ty<'tcx>) -> Operand<'tcx> {
context_before:     // Helper to get the minimum value of the appropriate type
context_after:         assert!(ty.is_signed());