syntax_data: {"ast_node_type":"other","tokens":[{"end":41,"kind":"keyword","start":0,"text":"self.gather_operand(lhs);"}]}
source_snippet:                 self.gather_operand(lhs);
context_before:             Rvalue::BinaryOp(ref _binop, box (ref lhs, ref rhs)) => {
context_after:                 self.gather_operand(rhs);