syntax_data: {"ast_node_type":"other","tokens":[{"end":45,"kind":"keyword","start":0,"text":"(line,"}]}
source_snippet:             (line, col_or_chpos, display_col)
context_before:             let display_col = code.chars().take(col_or_chpos.0).map(|ch| char_width(ch)).sum();
context_after:         } else {