syntax_data: {"ast_node_type":"other","tokens":[{"end":74,"kind":"keyword","start":0,"text":"self.line_cache[hi_cache_idx"}]}
source_snippet:             self.line_cache[hi_cache_idx as usize].touch(self.time_stamp);
context_before:             self.line_cache[lo_cache_idx as usize].touch(self.time_stamp);