/**
 * Copyright (c) 2021 OceanBase
 * OceanBase CE is licensed under Mulan PubL v2.
 * You can use this software according to the terms and conditions of the Mulan PubL v2.
 * You may obtain a copy of Mulan PubL v2 at:
 *          http://license.coscl.org.cn/MulanPubL-2.0
 * THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND,
 * EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT,
 * MERCHANTABILITY OR FIT FOR A PARTICULAR PURPOSE.
 * See the Mulan PubL v2 for more details.
 */

#ifndef _OB_EXPR_REMAINDER_H_
#define _OB_EXPR_REMAINDER_H_

#include "sql/engine/expr/ob_expr_operator.h"

namespace oceanbase {
namespace sql {
class ObExprRemainder : public ObArithExprOperator {
public:
  ObExprRemainder();
  explicit ObExprRemainder(common::ObIAllocator& alloc);
  virtual ~ObExprRemainder(){};
  virtual int calc_result_type2(
      ObExprResType& type, ObExprResType& type1, ObExprResType& type2, common::ObExprTypeCtx& type_ctx) const;
  virtual int calc_result2(
      common::ObObj& res, const common::ObObj& ojb1, const common::ObObj& obj2, common::ObExprCtx& expr_ctx) const;
  static int calc(common::ObObj& res, const common::ObObj& ojb1, const common::ObObj& obj2,
      common::ObIAllocator* allocator, common::ObScale scale);
  static int remainder_int64(const int64_t dividend, const int64_t divisor, int64_t& value);

  virtual int cg_expr(ObExprCGCtx& expr_cg_ctx, const ObRawExpr& raw_expr, ObExpr& rt_expr) const;
  static int calc_remainder_expr(const ObExpr& expr, ObEvalCtx& ctx, ObDatum& res);

private:
  static int remainder_float(common::ObObj& res, const common::ObObj& left, const common::ObObj& right,
      common::ObIAllocator* allocator, common::ObScale scale);
  static int remainder_double(common::ObObj& res, const common::ObObj& left, const common::ObObj& right,
      common::ObIAllocator* allocator, common::ObScale scale);
  static int remainder_number(common::ObObj& res, const common::ObObj& left, const common::ObObj& right,
      common::ObIAllocator* allocator, common::ObScale scale);
  DISALLOW_COPY_AND_ASSIGN(ObExprRemainder);

private:
  static ObArithFunc remainder_funcs_[common::ObMaxTC];
};
}  // namespace sql
}  // namespace oceanbase

#endif /* _OB_EXPR_MOD_H_ */
