Method accept

expr.hh:132–136

  bool_binop(prod *p) : bool_expr(p) { }
  virtual void out(std::ostream &out) = 0;
  virtual void accept(prod_visitor *v) {
    v->visit(this);
    lhs->accept(v);
    rhs->accept(v);
  }
};

struct bool_term : bool_binop {