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2021-05-31 22:56:52 +08:00
commit cea7de1475
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--- a/src/sql/engine/expr/ob_expr_to_number.h
+++ b/src/sql/engine/expr/ob_expr_to_number.h
@ -0,0 +1,87 @@
+/**
+ * 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 SQL_ENGINE_EXPR_OB_EXPR_TO_NUMBER_BASE_H_
+#define SQL_ENGINE_EXPR_OB_EXPR_TO_NUMBER_BASE_H_
+
+#include "share/object/ob_obj_cast.h"
+#include "sql/engine/expr/ob_expr_operator.h"
+#include "sql/session/ob_sql_session_info.h"
+
+namespace oceanbase {
+namespace sql {
+
+class ObExprToNumberBase : public ObFuncExprOperator {
+  public:
+  explicit ObExprToNumberBase(common::ObIAllocator& alloc, const ObExprOperatorType type, const char* name);
+  virtual ~ObExprToNumberBase();
+
+  virtual int calc_result_typeN(
+      ObExprResType& type, ObExprResType* types, int64_t param_num, common::ObExprTypeCtx& type_ctx) const;
+
+  private:
+  DISALLOW_COPY_AND_ASSIGN(ObExprToNumberBase);
+};
+
+class ObExprToNumber : public ObExprToNumberBase {
+  public:
+  explicit ObExprToNumber(common::ObIAllocator& alloc);
+  virtual ~ObExprToNumber();
+
+  virtual int calc_resultN(
+      common::ObObj& result, const common::ObObj* objs, int64_t param_num, common::ObExprCtx& expr_ctx) const;
+  virtual int cg_expr(ObExprCGCtx& expr_cg_ctx, const ObRawExpr& raw_expr, ObExpr& rt_expr) const override;
+  static int calc_(const ObString& in_str, const ObString& in_fmt_str, ObIAllocator& alloc, number::ObNumber& res_nmb);
+  // for engine 3.0
+  static int calc_tonumber_expr(const ObExpr& expr, ObEvalCtx& ctx, ObDatum& res_datum);
+
+  private:
+  DISALLOW_COPY_AND_ASSIGN(ObExprToNumber);
+};
+
+class ObExprToBinaryFloat : public ObExprToNumberBase {
+  public:
+  explicit ObExprToBinaryFloat(common::ObIAllocator& alloc);
+  virtual ~ObExprToBinaryFloat();
+
+  virtual int calc_resultN(
+      common::ObObj& result, const common::ObObj* objs, int64_t param_num, common::ObExprCtx& expr_ctx) const;
+  virtual int calc_result_typeN(
+      ObExprResType& type, ObExprResType* types, int64_t param_num, common::ObExprTypeCtx& type_ctx) const;
+  virtual int cg_expr(ObExprCGCtx& expr_cg_ctx, const ObRawExpr& raw_expr, ObExpr& rt_expr) const override;
+  static int calc_(const ObString& in_str, const ObString& in_fmt_str, ObIAllocator& alloc, number::ObNumber& res_nmb);
+  static int calc_to_binaryfloat_expr(const ObExpr& expr, ObEvalCtx& ctx, ObDatum& res_datum);
+
+  private:
+  DISALLOW_COPY_AND_ASSIGN(ObExprToBinaryFloat);
+};
+
+class ObExprToBinaryDouble : public ObExprToNumberBase {
+  public:
+  explicit ObExprToBinaryDouble(common::ObIAllocator& alloc);
+  virtual ~ObExprToBinaryDouble();
+
+  virtual int calc_resultN(
+      common::ObObj& result, const common::ObObj* objs, int64_t param_num, common::ObExprCtx& expr_ctx) const;
+  virtual int calc_result_typeN(
+      ObExprResType& type, ObExprResType* types, int64_t param_num, common::ObExprTypeCtx& type_ctx) const;
+  virtual int cg_expr(ObExprCGCtx& expr_cg_ctx, const ObRawExpr& raw_expr, ObExpr& rt_expr) const override;
+  static int calc_to_binarydouble_expr(const ObExpr& expr, ObEvalCtx& ctx, ObDatum& res_datum);
+
+  private:
+  DISALLOW_COPY_AND_ASSIGN(ObExprToBinaryDouble);
+};
+
+} /* namespace sql */
+} /* namespace oceanbase */
+
+#endif /* SQL_ENGINE_EXPR_OB_EXPR_TO_NUMBER_BASE_H_ */