syntax_data: {"ast_node_type":"variable","tokens":[{"end":68,"kind":"keyword","start":0,"text":"let"}]}
source_snippet:                 let res_rhs = self.visit_land_rhs(&self.thir[rhs])?;
context_before:                 let res_lhs = self.visit_land(&self.thir[lhs], accumulator);
context_after:                 accumulator.push(res_rhs);