/* -*- 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 .
 */

#include <sal/config.h>

#include <algorithm>

#include <refdata.hxx>
#include <document.hxx>

void ScSingleRefData::InitAddress( const ScAddress& rAdr )
{
    InitAddress( rAdr.Col(), rAdr.Row(), rAdr.Tab());
}

void ScSingleRefData::InitAddress( SCCOL nColP, SCROW nRowP, SCTAB nTabP )
{
    InitFlags();
    mnCol = nColP;
    mnRow = nRowP;
    mnTab = nTabP;
}

void ScSingleRefData::InitAddressRel( const ScDocument* pDoc, const ScAddress& rAdr, const ScAddress& rPos )
{
    InitFlags();
    SetColRel(true);
    SetRowRel(true);
    SetTabRel(true);
    SetAddress(pDoc->GetSheetLimits(), rAdr, rPos);
}

void ScSingleRefData::InitFromRefAddress( const ScDocument* pDoc, const ScRefAddress& rRef, const ScAddress& rPos )
{
    InitFlags();
    SetColRel( rRef.IsRelCol());
    SetRowRel( rRef.IsRelRow());
    SetTabRel( rRef.IsRelTab());
    SetFlag3D( rRef.Tab() != rPos.Tab());
    SetAddress( pDoc->GetSheetLimits(), rRef.GetAddress(), rPos);
}

void ScSingleRefData::SetAbsCol( SCCOL nVal )
{
    Flags.bColRel = false;
    mnCol = nVal;
}

void ScSingleRefData::SetRelCol( SCCOL nVal )
{
    Flags.bColRel = true;
    mnCol = nVal;
}

void ScSingleRefData::IncCol( SCCOL nInc )
{
    mnCol += nInc;
}

void ScSingleRefData::SetAbsRow( SCROW nVal )
{
    Flags.bRowRel = false;
    mnRow = nVal;
}

void ScSingleRefData::SetRelRow( SCROW nVal )
{
    Flags.bRowRel = true;
    mnRow = nVal;
}

void ScSingleRefData::IncRow( SCROW nInc )
{
    mnRow += nInc;
}

void ScSingleRefData::SetAbsTab( SCTAB nVal )
{
    Flags.bTabRel = false;
    mnTab = nVal;
}

void ScSingleRefData::SetRelTab( SCTAB nVal )
{
    Flags.bTabRel = true;
    mnTab = nVal;
}

void ScSingleRefData::IncTab( SCTAB nInc )
{
    mnTab += nInc;
}

void ScSingleRefData::SetColDeleted( bool bVal )
{
    Flags.bColDeleted = bVal;
}

void ScSingleRefData::SetRowDeleted( bool bVal )
{
    Flags.bRowDeleted = bVal;
}

void ScSingleRefData::SetTabDeleted( bool bVal )
{
    Flags.bTabDeleted = bVal;
}

bool ScSingleRefData::IsDeleted() const
{
    return IsColDeleted() || IsRowDeleted() || IsTabDeleted();
}

bool ScSingleRefData::Valid(const ScDocument* pDoc) const
{
    return ColValid(pDoc) && RowValid(pDoc) && TabValid();
}

bool ScSingleRefData::ColValid(const ScDocument* pDoc) const
{
    if (Flags.bColRel)
    {
        if (mnCol < -pDoc->MaxCol() || pDoc->MaxCol() < mnCol)
            return false;
    }
    else
    {
        if (mnCol < 0 || pDoc->MaxCol() < mnCol)
            return false;
    }

    return true;
}

bool ScSingleRefData::RowValid(const ScDocument* pDoc) const
{
    if (Flags.bRowRel)
    {
        if (mnRow < -pDoc->MaxRow() || pDoc->MaxRow() < mnRow)
            return false;
    }
    else
    {
        if (mnRow < 0 || pDoc->MaxRow() < mnRow)
            return false;
    }

    return true;
}

bool ScSingleRefData::TabValid() const
{
    if (Flags.bTabRel)
    {
        if (mnTab < -MAXTAB || MAXTAB < mnTab)
            return false;
    }
    else
    {
        if (mnTab < 0 || MAXTAB < mnTab)
            return false;
    }

    return true;
}

bool ScSingleRefData::ValidExternal(const ScDocument* pDoc) const
{
    return ColValid(pDoc) && RowValid(pDoc) && mnTab >= -1;
}

ScAddress ScSingleRefData::toAbs( const ScDocument* pDoc, const ScAddress& rPos ) const
{
    return toAbs(pDoc->GetSheetLimits(), rPos);
}

ScAddress ScSingleRefData::toAbs( ScSheetLimits& rLimits, const ScAddress& rPos ) const
{
    SCCOL nRetCol = Flags.bColRel ? mnCol + rPos.Col() : mnCol;
    SCROW nRetRow = Flags.bRowRel ? mnRow + rPos.Row() : mnRow;
    SCTAB nRetTab = Flags.bTabRel ? mnTab + rPos.Tab() : mnTab;

    ScAddress aAbs(ScAddress::INITIALIZE_INVALID);

    if (rLimits.ValidCol(nRetCol))
        aAbs.SetCol(nRetCol);

    if (rLimits.ValidRow(nRetRow))
        aAbs.SetRow(nRetRow);

    if (ValidTab(nRetTab))
        aAbs.SetTab(nRetTab);

    return aAbs;
}

void ScSingleRefData::SetAddress( ScSheetLimits& rLimits, const ScAddress& rAddr, const ScAddress& rPos )
{
    if (Flags.bColRel)
        mnCol = rAddr.Col() - rPos.Col();
    else
        mnCol = rAddr.Col();

    if (!rLimits.ValidCol(rAddr.Col()))
        SetColDeleted(true);

    if (Flags.bRowRel)
        mnRow = rAddr.Row() - rPos.Row();
    else
        mnRow = rAddr.Row();

    if (!rLimits.ValidRow(rAddr.Row()))
        SetRowDeleted(true);

    if (Flags.bTabRel)
        mnTab = rAddr.Tab() - rPos.Tab();
    else
        mnTab = rAddr.Tab();

    if (!ValidTab( rAddr.Tab(), MAXTAB))
        SetTabDeleted(true);
}

SCROW ScSingleRefData::Row() const
{
    if (Flags.bRowDeleted)
        return -1;
    return mnRow;
}

SCCOL ScSingleRefData::Col() const
{
    if (Flags.bColDeleted)
        return -1;
    return mnCol;
}

SCTAB ScSingleRefData::Tab() const
{
    if (Flags.bTabDeleted)
        return -1;
    return mnTab;
}

// static
void ScSingleRefData::PutInOrder( ScSingleRefData& rRef1, ScSingleRefData& rRef2, const ScAddress& rPos )
{
    const sal_uInt8 kCOL = 1;
    const sal_uInt8 kROW = 2;
    const sal_uInt8 kTAB = 4;

    sal_uInt8 nRelState1 = rRef1.Flags.bRelName ?
        ((rRef1.Flags.bTabRel ? kTAB : 0) |
         (rRef1.Flags.bRowRel ? kROW : 0) |
         (rRef1.Flags.bColRel ? kCOL : 0)) :
        0;

    sal_uInt8 nRelState2 = rRef2.Flags.bRelName ?
        ((rRef2.Flags.bTabRel ? kTAB : 0) |
         (rRef2.Flags.bRowRel ? kROW : 0) |
         (rRef2.Flags.bColRel ? kCOL : 0)) :
        0;

    SCCOL nCol1 = rRef1.Flags.bColRel ? rPos.Col() + rRef1.mnCol : rRef1.mnCol;
    SCCOL nCol2 = rRef2.Flags.bColRel ? rPos.Col() + rRef2.mnCol : rRef2.mnCol;
    if (nCol2 < nCol1)
    {
        rRef1.mnCol = rRef2.Flags.bColRel ? nCol2 - rPos.Col() : nCol2;
        rRef2.mnCol = rRef1.Flags.bColRel ? nCol1 - rPos.Col() : nCol1;
        if (rRef1.Flags.bRelName && rRef1.Flags.bColRel)
            nRelState2 |= kCOL;
        else
            nRelState2 &= ~kCOL;
        if (rRef2.Flags.bRelName && rRef2.Flags.bColRel)
            nRelState1 |= kCOL;
        else
            nRelState1 &= ~kCOL;
        bool bTmp = rRef1.Flags.bColRel;
        rRef1.Flags.bColRel = rRef2.Flags.bColRel;
        rRef2.Flags.bColRel = bTmp;
        bTmp = rRef1.Flags.bColDeleted;
        rRef1.Flags.bColDeleted = rRef2.Flags.bColDeleted;
        rRef2.Flags.bColDeleted = bTmp;
    }

    SCROW nRow1 = rRef1.Flags.bRowRel ? rPos.Row() + rRef1.mnRow : rRef1.mnRow;
    SCROW nRow2 = rRef2.Flags.bRowRel ? rPos.Row() + rRef2.mnRow : rRef2.mnRow;
    if (nRow2 < nRow1)
    {
        rRef1.mnRow = rRef2.Flags.bRowRel ? nRow2 - rPos.Row() : nRow2;
        rRef2.mnRow = rRef1.Flags.bRowRel ? nRow1 - rPos.Row() : nRow1;
        if (rRef1.Flags.bRelName && rRef1.Flags.bRowRel)
            nRelState2 |= kROW;
        else
            nRelState2 &= ~kROW;
        if (rRef2.Flags.bRelName && rRef2.Flags.bRowRel)
            nRelState1 |= kROW;
        else
            nRelState1 &= ~kROW;
        bool bTmp = rRef1.Flags.bRowRel;
        rRef1.Flags.bRowRel = rRef2.Flags.bRowRel;
        rRef2.Flags.bRowRel = bTmp;
        bTmp = rRef1.Flags.bRowDeleted;
        rRef1.Flags.bRowDeleted = rRef2.Flags.bRowDeleted;
        rRef2.Flags.bRowDeleted = bTmp;
    }

    SCTAB nTab1 = rRef1.Flags.bTabRel ? rPos.Tab() + rRef1.mnTab : rRef1.mnTab;
    SCTAB nTab2 = rRef2.Flags.bTabRel ? rPos.Tab() + rRef2.mnTab : rRef2.mnTab;
    if (nTab2 < nTab1)
    {
        rRef1.mnTab = rRef2.Flags.bTabRel ? nTab2 - rPos.Tab() : nTab2;
        rRef2.mnTab = rRef1.Flags.bTabRel ? nTab1 - rPos.Tab() : nTab1;
        if (rRef1.Flags.bRelName && rRef1.Flags.bTabRel)
            nRelState2 |= kTAB;
        else
            nRelState2 &= ~kTAB;
        if (rRef2.Flags.bRelName && rRef2.Flags.bTabRel)
            nRelState1 |= kTAB;
        else
            nRelState1 &= ~kTAB;
        bool bTmp = rRef1.Flags.bTabRel;
        rRef1.Flags.bTabRel = rRef2.Flags.bTabRel;
        rRef2.Flags.bTabRel = bTmp;
        bTmp = rRef1.Flags.bTabDeleted;
        rRef1.Flags.bTabDeleted = rRef2.Flags.bTabDeleted;
        rRef2.Flags.bTabDeleted = bTmp;
    }

    // bFlag3D stays the same on both references.

    rRef1.Flags.bRelName = (nRelState1 != 0);
    rRef2.Flags.bRelName = (nRelState2 != 0);
}

bool ScSingleRefData::operator==( const ScSingleRefData& r ) const
{
    return mnFlagValue == r.mnFlagValue && mnCol == r.mnCol && mnRow == r.mnRow && mnTab == r.mnTab;
}

bool ScSingleRefData::operator!=( const ScSingleRefData& r ) const
{
    return !operator==(r);
}

#if DEBUG_FORMULA_COMPILER
void ScSingleRefData::Dump( int nIndent ) const
{
    std::string aIndent;
    for (int i = 0; i < nIndent; ++i)
        aIndent += "  ";

    cout << aIndent << "address type column: " << (IsColRel()?"relative":"absolute")
         << "  row : " << (IsRowRel()?"relative":"absolute") << "  sheet: "
         << (IsTabRel()?"relative":"absolute") << endl;
    cout << aIndent << "deleted column: " << (IsColDeleted()?"yes":"no")
         << "  row : " << (IsRowDeleted()?"yes":"no") << "  sheet: "
         << (IsTabDeleted()?"yes":"no") << endl;
    cout << aIndent << "column: " << mnCol << "  row: " << mnRow << "  sheet: " << mnTab << endl;
    cout << aIndent << "3d ref: " << (IsFlag3D()?"yes":"no") << endl;
}
#endif

void ScComplexRefData::InitFromRefAddresses( const ScDocument* pDoc, const ScRefAddress& rRef1, const ScRefAddress& rRef2, const ScAddress& rPos )
{
    InitFlags();
    Ref1.SetColRel( rRef1.IsRelCol());
    Ref1.SetRowRel( rRef1.IsRelRow());
    Ref1.SetTabRel( rRef1.IsRelTab());
    Ref1.SetFlag3D( rRef1.Tab() != rPos.Tab() || rRef1.Tab() != rRef2.Tab());
    Ref2.SetColRel( rRef2.IsRelCol());
    Ref2.SetRowRel( rRef2.IsRelRow());
    Ref2.SetTabRel( rRef2.IsRelTab());
    Ref2.SetFlag3D( rRef1.Tab() != rRef2.Tab());
    SetRange( pDoc->GetSheetLimits(), ScRange( rRef1.GetAddress(), rRef2.GetAddress()), rPos);
}

ScComplexRefData& ScComplexRefData::Extend( ScSheetLimits& rLimits, const ScSingleRefData & rRef, const ScAddress & rPos )
{
    bool bInherit3D = (Ref1.IsFlag3D() && !Ref2.IsFlag3D() && !rRef.IsFlag3D());
    ScRange aAbsRange = toAbs(rLimits, rPos);

    ScSingleRefData aRef = rRef;
    // If no sheet was given in the extending part, let it point to the same
    // sheet as this reference's end point, inheriting the absolute/relative
    // mode.
    // [$]Sheet1.A5:A6:A7 on Sheet2 do still reference only Sheet1.
    if (!rRef.IsFlag3D())
    {
        if (Ref2.IsTabRel())
            aRef.SetRelTab( Ref2.Tab());
        else
            aRef.SetAbsTab( Ref2.Tab());
    }
    ScAddress aAbs = aRef.toAbs(rLimits, rPos);

    if (aAbs.Col() < aAbsRange.aStart.Col())
        aAbsRange.aStart.SetCol(aAbs.Col());

    if (aAbs.Row() < aAbsRange.aStart.Row())
        aAbsRange.aStart.SetRow(aAbs.Row());

    if (aAbs.Tab() < aAbsRange.aStart.Tab())
        aAbsRange.aStart.SetTab(aAbs.Tab());

    if (aAbsRange.aEnd.Col() < aAbs.Col())
        aAbsRange.aEnd.SetCol(aAbs.Col());

    if (aAbsRange.aEnd.Row() < aAbs.Row())
        aAbsRange.aEnd.SetRow(aAbs.Row());

    if (aAbsRange.aEnd.Tab() < aAbs.Tab())
        aAbsRange.aEnd.SetTab(aAbs.Tab());

    // In Ref2 inherit absolute/relative addressing from the extending part.
    // A$5:A5 => A$5:A$5:A5 => A$5:A5, and not A$5:A$5
    // A$6:$A5 => A$6:A$6:$A5 => A5:$A$6
    if (aAbsRange.aEnd.Col() == aAbs.Col())
        Ref2.SetColRel( rRef.IsColRel());
    if (aAbsRange.aEnd.Row() == aAbs.Row())
        Ref2.SetRowRel( rRef.IsRowRel());

    // In Ref1 inherit relative sheet from extending part if given.
    if (aAbsRange.aStart.Tab() == aAbs.Tab() && rRef.IsFlag3D())
        Ref1.SetTabRel( rRef.IsTabRel());

    // In Ref2 inherit relative sheet from either Ref1 or extending part.
    // Use the original 3D flags to determine which.
    // $Sheet1.$A$5:$A$6 => $Sheet1.$A$5:$A$5:$A$6 => $Sheet1.$A$5:$A$6, and
    // not $Sheet1.$A$5:Sheet1.$A$6 (with invisible second 3D, but relative).
    if (aAbsRange.aEnd.Tab() == aAbs.Tab())
        Ref2.SetTabRel( bInherit3D ? Ref1.IsTabRel() : rRef.IsTabRel());

    // Force 3D flag in Ref1 if different sheet or more than one sheet
    // referenced.
    if (aAbsRange.aStart.Tab() != rPos.Tab() || aAbsRange.aStart.Tab() != aAbsRange.aEnd.Tab())
        Ref1.SetFlag3D(true);

    // Force 3D flag in Ref2 if more than one sheet referenced.
    if (aAbsRange.aStart.Tab() != aAbsRange.aEnd.Tab())
        Ref2.SetFlag3D(true);

    // Inherit 3D flag in Ref1 from extending part in case range wasn't
    // extended as in A5:A5:Sheet1.A5 if on Sheet1.
    if (rRef.IsFlag3D())
        Ref1.SetFlag3D( true);

    // Inherit RelNameRef from extending part.
    if (rRef.IsRelName())
        Ref2.SetRelName(true);

    SetRange(rLimits, aAbsRange, rPos);

    return *this;
}

ScComplexRefData& ScComplexRefData::Extend( ScSheetLimits& rLimits, const ScComplexRefData & rRef, const ScAddress & rPos )
{
    return Extend( rLimits, rRef.Ref1, rPos).Extend( rLimits, rRef.Ref2, rPos);
}

bool ScComplexRefData::Valid(const ScDocument* pDoc) const
{
    return Ref1.Valid(pDoc) && Ref2.Valid(pDoc);
}

bool ScComplexRefData::ValidExternal(const ScDocument* pDoc) const
{
    return Ref1.ValidExternal(pDoc) && Ref2.ColValid(pDoc) && Ref2.RowValid(pDoc) && Ref1.Tab() <= Ref2.Tab();
}

ScRange ScComplexRefData::toAbs( const ScDocument* pDoc, const ScAddress& rPos ) const
{
    return toAbs(pDoc->GetSheetLimits(), rPos);
}

ScRange ScComplexRefData::toAbs( ScSheetLimits& rLimits, const ScAddress& rPos ) const
{
    return ScRange(Ref1.toAbs(rLimits, rPos), Ref2.toAbs(rLimits, rPos));
}

void ScComplexRefData::SetRange( ScSheetLimits& rLimits, const ScRange& rRange, const ScAddress& rPos )
{
    Ref1.SetAddress(rLimits, rRange.aStart, rPos);
    Ref2.SetAddress(rLimits, rRange.aEnd, rPos);
}

void ScComplexRefData::PutInOrder( const ScAddress& rPos )
{
    ScSingleRefData::PutInOrder( Ref1, Ref2, rPos);
}

bool ScComplexRefData::IncEndColSticky( const ScDocument* pDoc, SCCOL nDelta, const ScAddress& rPos )
{
    SCCOL nCol1 = Ref1.IsColRel() ? Ref1.Col() + rPos.Col() : Ref1.Col();
    SCCOL nCol2 = Ref2.IsColRel() ? Ref2.Col() + rPos.Col() : Ref2.Col();
    if (nCol1 >= nCol2)
    {
        // Less than two columns => not sticky.
        Ref2.IncCol( nDelta);
        return true;
    }

    if (nCol2 == pDoc->MaxCol())
        // already sticky
        return false;

    if (nCol2 < pDoc->MaxCol())
    {
        SCCOL nCol = ::std::min( static_cast<SCCOL>(nCol2 + nDelta), pDoc->MaxCol());
        if (Ref2.IsColRel())
            Ref2.SetRelCol( nCol - rPos.Col());
        else
            Ref2.SetAbsCol( nCol);
    }
    else
        Ref2.IncCol( nDelta);   // was greater than pDoc->.MaxCol(), caller should know...

    return true;
}

bool ScComplexRefData::IncEndRowSticky( const ScDocument* pDoc, SCROW nDelta, const ScAddress& rPos )
{
    SCROW nRow1 = Ref1.IsRowRel() ? Ref1.Row() + rPos.Row() : Ref1.Row();
    SCROW nRow2 = Ref2.IsRowRel() ? Ref2.Row() + rPos.Row() : Ref2.Row();
    if (nRow1 >= nRow2)
    {
        // Less than two rows => not sticky.
        Ref2.IncRow( nDelta);
        return true;
    }

    if (nRow2 == pDoc->MaxRow())
        // already sticky
        return false;

    if (nRow2 < pDoc->MaxRow())
    {
        SCROW nRow = ::std::min( static_cast<SCROW>(nRow2 + nDelta), pDoc->MaxRow());
        if (Ref2.IsRowRel())
            Ref2.SetRelRow( nRow - rPos.Row());
        else
            Ref2.SetAbsRow( nRow);
    }
    else
        Ref2.IncRow( nDelta);   // was greater than pDoc->.MaxRow(), caller should know...

    return true;
}

bool ScComplexRefData::IsDeleted() const
{
    return Ref1.IsDeleted() || Ref2.IsDeleted();
}

#if DEBUG_FORMULA_COMPILER
void ScComplexRefData::Dump( int nIndent ) const
{
    std::string aIndent;
    for (int i = 0; i < nIndent; ++i)
        aIndent += "  ";

    cout << aIndent << "ref 1" << endl;
    Ref1.Dump(nIndent+1);
    cout << aIndent << "ref 2" << endl;
    Ref2.Dump(nIndent+1);
}
#endif

/* vim:set shiftwidth=4 softtabstop=4 expandtab: */