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+/* Copyright (C) 2003 MySQL AB
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software
+ Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */
+
+#ifndef ODBC_CODEGEN_Code_pred_op_hpp
+#define ODBC_CODEGEN_Code_pred_op_hpp
+
+#include <common/common.hpp>
+#include <common/DataField.hpp>
+#include "Code_pred.hpp"
+
+/**
+ * @class Pred_op
+ * @brief Boolean operators
+ */
+struct Pred_op {
+ enum Opcode {
+ And = 1, // binary
+ Or,
+ Not // unary
+ };
+ Pred_op(Opcode opcode);
+ const char* name() const;
+ unsigned arity() const;
+ Opcode m_opcode;
+};
+
+inline
+Pred_op::Pred_op(Opcode opcode) :
+ m_opcode(opcode)
+{
+}
+
+/**
+ * @class Plan_pred_op
+ * @brief Operator node in a predicate in PlanTree
+ */
+class Plan_pred_op : public Plan_pred {
+public:
+ Plan_pred_op(Plan_root* root, Pred_op op);
+ virtual ~Plan_pred_op();
+ Plan_base* analyze(Ctx& ctx, Ctl& ctl);
+ Exec_base* codegen(Ctx& ctx, Ctl& ctl);
+ void print(Ctx& ctx);
+ bool isGroupBy(const Plan_expr_row* row) const;
+ // children
+ void setPred(unsigned i, Plan_pred* pred);
+protected:
+ friend class Plan_pred;
+ Pred_op m_op;
+ Plan_pred* m_pred[1 + 2];
+};
+
+inline
+Plan_pred_op::Plan_pred_op(Plan_root* root, Pred_op op) :
+ Plan_pred(root, TypeOp),
+ m_op(op)
+{
+ m_pred[0] = m_pred[1] = m_pred[2] = 0;
+}
+
+inline void
+Plan_pred_op::setPred(unsigned i, Plan_pred* pred)
+{
+ ctx_assert(1 <= i && i <= m_op.arity() && pred != 0);
+ m_pred[i] = pred;
+}
+
+/**
+ * @class Exec_pred_op
+ * @brief Operator node in a predicate in ExecTree
+ */
+class Exec_pred_op : public Exec_pred {
+public:
+ class Code : public Exec_pred::Code {
+ public:
+ Code(Pred_op op);
+ virtual ~Code();
+ protected:
+ friend class Exec_pred_op;
+ Pred_op m_op;
+ };
+ class Data : public Exec_pred::Data {
+ public:
+ Data();
+ virtual ~Data();
+ protected:
+ friend class Exec_pred_op;
+ };
+ Exec_pred_op(Exec_root* root);
+ virtual ~Exec_pred_op();
+ void alloc(Ctx& ctx, Ctl& ctl);
+ void execInterp(Ctx& ctx, Ctl& ctl);
+ void evaluate(Ctx& ctx, Ctl& ctl);
+ void close(Ctx& ctx);
+ void print(Ctx& ctx);
+ // children
+ const Code& getCode() const;
+ Data& getData() const;
+ void setPred(unsigned i, Exec_pred* pred);
+protected:
+ Exec_pred* m_pred[1 + 2];
+};
+
+inline
+Exec_pred_op::Code::Code(Pred_op op) :
+ m_op(op)
+{
+}
+
+inline
+Exec_pred_op::Data::Data()
+{
+}
+
+inline
+Exec_pred_op::Exec_pred_op(Exec_root* root) :
+ Exec_pred(root)
+{
+ m_pred[0] = m_pred[1] = m_pred[2] = 0;
+}
+
+// children
+
+inline const Exec_pred_op::Code&
+Exec_pred_op::getCode() const
+{
+ const Code* code = static_cast<const Code*>(m_code);
+ return *code;
+}
+
+inline Exec_pred_op::Data&
+Exec_pred_op::getData() const
+{
+ Data* data = static_cast<Data*>(m_data);
+ return *data;
+}
+
+inline void
+Exec_pred_op::setPred(unsigned i, Exec_pred* pred)
+{
+ ctx_assert(1 <= i && i <= 2 && m_pred[i] == 0);
+ m_pred[i] = pred;
+}
+
+#endif