45 lines
1.2 KiB
C++
45 lines
1.2 KiB
C++
/**
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* Copyright (c) 2021 OceanBase
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* OceanBase CE is licensed under Mulan PubL v2.
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* You can use this software according to the terms and conditions of the Mulan PubL v2.
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* You may obtain a copy of Mulan PubL v2 at:
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* http://license.coscl.org.cn/MulanPubL-2.0
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* THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND,
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* EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT,
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* MERCHANTABILITY OR FIT FOR A PARTICULAR PURPOSE.
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* See the Mulan PubL v2 for more details.
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*/
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#ifndef OB_EXPR_VISITOR_H
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#define OB_EXPR_VISITOR_H
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namespace oceanbase {
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namespace jit {
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namespace expr {
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class ObExpr;
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class ObConstExpr;
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class ObVarExpr;
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class ObOpExpr;
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class ObCaseOpExpr;
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class ObColumnRefExpr;
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class ObExprVisitor {
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public:
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virtual int visit(const ObExpr& expr) = 0;
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virtual int visit(const ObConstExpr& expr) = 0;
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virtual int visit(const ObVarExpr& expr) = 0;
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virtual int visit(const ObOpExpr& expr) = 0;
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virtual int visit(const ObColumnRefExpr& expr) = 0;
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virtual int visit(const ObCaseOpExpr& expr) = 0;
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protected:
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bool skip_;
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};
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} // namespace expr
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} // namespace jit
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} // namespace oceanbase
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#endif /* OB_EXPR_VISITOR_H */
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