syntax_data: {"ast_node_type":"other","tokens":[{"end":59,"kind":"keyword","start":0,"text":"Ok(span.with_hi(span.hi()"}]}
source_snippet:             Ok(span.with_hi(span.hi() + BytePos(n as u32)))
context_before:             let n = s[end..].char_indices().find(|&(_, c)| !f(c)).map_or(s.len() - end, |(i, _)| i);
context_after:         })