/* -*- 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 <file/fcode.hxx>

#include <utility>

namespace connectivity

{

    class OSQLParseNode;

    namespace file

    {

        class OSQLAnalyzer;

        typedef std::vector<std::unique_ptr<OCode>> OCodeList;

        class OPredicateCompiler final : public ::salhelper::SimpleReferenceObject

        {

            friend class OPredicateInterpreter;

            friend class OSQLAnalyzer;

            OCodeList                               m_aCodeList;

            css::uno::Reference< css::container::XNameAccess> m_orgColumns; // in filecurs this are the filecolumns

            OSQLAnalyzer*                           m_pAnalyzer;

            sal_Int32                               m_nParamCounter;

        public:

            OPredicateCompiler(OSQLAnalyzer* pAnalyzer);

            virtual ~OPredicateCompiler() override;

            void dispose();

            void start(connectivity::OSQLParseNode const * pSQLParseNode);

            OOperand* execute(connectivity::OSQLParseNode const * pPredicateNode);

            void Clean();

            bool isClean() const {return m_aCodeList.empty();}

            bool hasCode() const {return !isClean();}

            void  setOrigColumns(const css::uno::Reference< css::container::XNameAccess>& rCols) { m_orgColumns = rCols; }

            const css::uno::Reference< css::container::XNameAccess>& getOrigColumns() const { return m_orgColumns; }

        private:

            /// @throws css::sdbc::SQLException

            /// @throws css::uno::RuntimeException

            void execute_COMPARE(connectivity::OSQLParseNode const * pPredicateNode);

            /// @throws css::sdbc::SQLException

            /// @throws css::uno::RuntimeException

            void execute_LIKE(connectivity::OSQLParseNode const * pPredicateNode);

            /// @throws css::sdbc::SQLException

            /// @throws css::uno::RuntimeException

            void execute_BETWEEN(connectivity::OSQLParseNode const * pPredicateNode);

            /// @throws css::sdbc::SQLException

            /// @throws css::uno::RuntimeException

            void execute_ISNULL(connectivity::OSQLParseNode const * pPredicateNode);

            /// @throws css::sdbc::SQLException

            /// @throws css::uno::RuntimeException

            OOperand* execute_Operand(connectivity::OSQLParseNode const * pPredicateNode);

            /// @throws css::sdbc::SQLException

            /// @throws css::uno::RuntimeException

            void execute_Fold(OSQLParseNode const * pPredicateNode);

            /// @throws css::sdbc::SQLException

            /// @throws css::uno::RuntimeException

            void executeFunction(OSQLParseNode const * pPredicateNode);

        };

        class OPredicateInterpreter :

            public ::salhelper::SimpleReferenceObject

        {

            OCodeStack          m_aStack;

            ::rtl::Reference<OPredicateCompiler> m_rCompiler;

        public:

            OPredicateInterpreter(::rtl::Reference<OPredicateCompiler> xComp) : m_rCompiler(std::move(xComp)){}

            virtual ~OPredicateInterpreter() override;

            bool        evaluate(OCodeList& rCodeList);

            void        evaluateSelection(OCodeList& rCodeList, ORowSetValueDecoratorRef const & _rVal);

            bool start()

            {

                return evaluate(m_rCompiler->m_aCodeList);

            }

            void startSelection(ORowSetValueDecoratorRef const & _rVal)

            {

                evaluateSelection(m_rCompiler->m_aCodeList,_rVal);

            }

        };

    }

}

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