syntax_data: {"ast_node_type":"other","tokens":[{"end":83,"kind":"keyword","start":0,"text":"arg.cast_to(CastTarget::prefixed(prefix,"}]}
source_snippet:     arg.cast_to(CastTarget::prefixed(prefix, Uniform::new(Reg::i64(), rest_size)));
context_before:     let rest_size = size - Size::from_bytes(8) * prefix_index as u64;
context_after: }