syntax_data: {"ast_node_type":"variable","tokens":[{"end":80,"kind":"keyword","start":0,"text":"if"}]}
source_snippet:         if let ExprKind::Scope { region_scope, lint_level, value } = expr.kind {
context_before:         let expr = &this.thir[expr_id];
context_after:             let source_info = this.source_info(expr.span);