/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */

/*

 * This file is part of the LibreOffice project.

 *

 * This Source Code Form is subject to the terms of the Mozilla Public

 * License, v. 2.0. If a copy of the MPL was not distributed with this

 * file, You can obtain one at http://mozilla.org/MPL/2.0/.

 *

 * This file incorporates work covered by the following license notice:

 *

 *   Licensed to the Apache Software Foundation (ASF) under one or more

 *   contributor license agreements. See the NOTICE file distributed

 *   with this work for additional information regarding copyright

 *   ownership. The ASF licenses this file to you under the Apache

 *   License, Version 2.0 (the "License"); you may not use this file

 *   except in compliance with the License. You may obtain a copy of

 *   the License at http://www.apache.org/licenses/LICENSE-2.0 .

 */

#pragma once

#include <config_options.h>

#include <connectivity/sqliterator.hxx>

#include <com/sun/star/sdbc/DataType.hpp>

#include <connectivity/FValue.hxx>

#include <file/filedllapi.hxx>

#include <stack>

#include <utility>

namespace connectivity

{

    class OSQLParseNode;

    namespace file

    {

        class OOperand;

        typedef std::stack<OOperand*> OCodeStack;

        class UNLESS_MERGELIBS_MORE(OOO_DLLPUBLIC_FILE) OCode

        {

        public:

            //virtual dtor to allow this to be the root of the class hierarchy

            virtual ~OCode();

            //but that disables the default move ctor

            OCode(OCode&&) = default;

            //but that disables the rest of default ctors

            OCode(const OCode&) = default;

            OCode() = default;

            //and same issue for the assignment operators

            OCode& operator=(const OCode&) = default;

            OCode& operator=(OCode&&) = default;

        };

        // operands that the parsetree generate

        class OOO_DLLPUBLIC_FILE OOperand : public OCode

        {

        protected:

            sal_Int32 m_eDBType;

            OOperand(sal_Int32 _rType) : m_eDBType(_rType){}

            OOperand() : m_eDBType(css::sdbc::DataType::OTHER){}

        public:

            virtual const ORowSetValue& getValue() const = 0;

            virtual void setValue(const ORowSetValue& _rVal) = 0;

            sal_Int32 getDBType() const {return m_eDBType;}

            inline bool isValid() const;

        };

        class OOperandRow : public OOperand

        {

            sal_uInt16  m_nRowPos;

            OValueRefRow    m_pRow;

        protected:

            OOperandRow(sal_uInt16 _nPos, sal_Int32 _rType);

        public:

            virtual const ORowSetValue& getValue() const override;

            virtual void setValue(const ORowSetValue& _rVal) override;

            void bindValue(const OValueRefRow& _pRow); // Bind to the value that the operand represents

        };

        // Attributes from a result row

        class OOperandAttr : public OOperandRow

        {

        public:

            OOperandAttr(sal_uInt16 _nPos,

                         const css::uno::Reference< css::beans::XPropertySet>& _xColumn);

        };

        // Parameter for a predicate

        class OOperandParam : public OOperandRow

        {

        public:

            OOperandParam(sal_Int32 _nPos);

        };

        // Value operands

        class OOperandValue : public OOperand

        {

        protected:

            ORowSetValue m_aValue;

        protected:

            OOperandValue(){}

            OOperandValue(ORowSetValue _aVar, sal_Int32 eDbType)

                : OOperand(eDbType)

                , m_aValue(std::move(_aVar))

            {}

            OOperandValue(sal_Int32 eDbType) :OOperand(eDbType){}

        public:

            virtual const ORowSetValue& getValue() const override;

            virtual void setValue(const ORowSetValue& _rVal) override;

        };

        // Constants

        class OOperandConst : public OOperandValue

        {

        public:

            OOperandConst(const connectivity::OSQLParseNode& rColumnRef, const OUString& aStrValue);

        };

        // Result operands

        class OOperandResult : public OOperandValue

        {

        protected:

            OOperandResult(sal_Int32 eDbType)

                            :OOperandValue(eDbType) {}

        public:

            OOperandResult(const ORowSetValue& _rVar)

                            :OOperandValue(_rVar, _rVar.getTypeKind()) {}

        };

        class OOperandResultBOOL : public OOperandResult

        {

        public:

            OOperandResultBOOL(bool bResult) : OOperandResult(css::sdbc::DataType::BIT)

            {

                m_aValue = bResult ? 1.0 : 0.0;

                m_aValue.setBound(true);

            }

        };

        class OOperandResultNUM : public OOperandResult

        {

        public:

            OOperandResultNUM(double fNum) : OOperandResult(css::sdbc::DataType::DOUBLE)

            {

                m_aValue = fNum;

                m_aValue.setBound(true);

            }

        };

        /** special stop operand

            is appended when a list of arguments ends

        */

        class OStopOperand : public OOperandValue

        {

        public:

            OStopOperand(){}

        };

        // Operators

        class OOO_DLLPUBLIC_FILE OOperator : public OCode

        {

        public:

            virtual void Exec(OCodeStack&) = 0;

        };

        // Boolean operators

        class OOO_DLLPUBLIC_FILE OBoolOperator : public OOperator

        {

        public:

            virtual void Exec(OCodeStack&) override;

            virtual bool operate(const OOperand*, const OOperand*) const;

        };

        class OOp_NOT : public OBoolOperator

        {

        public:

        protected:

            virtual void Exec(OCodeStack&) override;

            virtual bool operate(const OOperand*, const OOperand*) const override;

        };

        class OOp_AND : public OBoolOperator

        {

        public:

        protected:

            virtual bool operate(const OOperand*, const OOperand*) const override;

        };

        class OOp_OR : public OBoolOperator

        {

        public:

        protected:

            virtual bool operate(const OOperand*, const OOperand*) const override;

        };

        class OOO_DLLPUBLIC_FILE OOp_ISNULL : public OBoolOperator

        {

        public:

        public:

            virtual void Exec(OCodeStack&) override;

            virtual bool operate(const OOperand*, const OOperand*) const override;

        };

        class OOO_DLLPUBLIC_FILE OOp_ISNOTNULL : public OOp_ISNULL

        {

        public:

            virtual bool operate(const OOperand*, const OOperand*) const override;

        };

        class OOO_DLLPUBLIC_FILE OOp_LIKE : public OBoolOperator

        {

            const sal_Unicode cEscape;

        public:

            OOp_LIKE(const sal_Unicode cEsc):cEscape(cEsc){};

            virtual bool operate(const OOperand*, const OOperand*) const override;

        };

        class OOp_NOTLIKE : public OOp_LIKE

        {

        public:

        public:

            OOp_NOTLIKE(const sal_Unicode cEsc):OOp_LIKE(cEsc){};

            virtual bool operate(const OOperand*, const OOperand*) const override;

        };

        class UNLESS_MERGELIBS_MORE(OOO_DLLPUBLIC_FILE) OOp_COMPARE : public OBoolOperator

        {

            sal_Int32 aPredicateType;

        public:

            OOp_COMPARE(sal_Int32 aPType)

                         :aPredicateType(aPType) {}

            sal_Int32 getPredicateType() const { return aPredicateType; }

            virtual bool operate(const OOperand*, const OOperand*) const override;

        };

        // Numerical operators

        class ONumOperator : public OOperator

        {

        public:

            virtual void Exec(OCodeStack&) override;

        protected:

            virtual double operate(const double& fLeft,const double& fRight) const = 0;

        };

        class OOp_ADD : public ONumOperator

        {

        protected:

            virtual double operate(const double& fLeft,const double& fRight) const override;

        };

        class OOp_SUB : public ONumOperator

        {

        protected:

            virtual double operate(const double& fLeft,const double& fRight) const override;

        };

        class OOp_MUL : public ONumOperator

        {

        protected:

            virtual double operate(const double& fLeft,const double& fRight) const override;

        };

        class OOp_DIV : public ONumOperator

        {

        protected:

            virtual double operate(const double& fLeft,const double& fRight) const override;

        };

        inline bool OOperand::isValid() const

        {

            return getValue().getDouble() != 0.0;

        }

        // Operator

        class ONthOperator : public OOperator

        {

        public:

            virtual void Exec(OCodeStack&) override;

        protected:

            virtual ORowSetValue operate(const std::vector<ORowSetValue>& lhs) const = 0;

        };

        class OBinaryOperator : public OOperator

        {

        public:

            virtual void Exec(OCodeStack&) override;

        protected:

            virtual ORowSetValue operate(const ORowSetValue& lhs,const ORowSetValue& rhs) const = 0;

        };

        class OUnaryOperator : public OOperator

        {

        public:

            virtual void Exec(OCodeStack&) override;

            virtual ORowSetValue operate(const ORowSetValue& lhs) const = 0;

        };

    }

}

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