syntax_data: {"ast_node_type":"other","tokens":[{"end":55,"kind":"keyword","start":0,"text":"LitError::NonDecimalFloat(base)"}]}
source_snippet:         LitError::NonDecimalFloat(base) => match base {
context_before:         }
context_after:             16 => dcx.emit_err(HexadecimalFloatLiteralNotSupported { span }),