syntax_data: {"ast_node_type":"other","tokens":[{"end":70,"kind":"keyword","start":0,"text":"data.prefix[data.prefix_index]"}]}
source_snippet:                     data.prefix[data.prefix_index] = Some(Reg::i32());
context_before:                 if !rest_size.bytes().is_multiple_of(8) && data.prefix_index < data.prefix.len() {
context_after:                     rest_size = rest_size - Reg::i32().size;