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/* -*- 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 .
*/
#ifndef SW_INDEX_HXX
#define SW_INDEX_HXX
#include <limits.h>
#include "rtl/instance.hxx"
#include <tools/solar.h>
#include <tools/rtti.hxx> // for RTTI of SwIndexReg
#include <swdllapi.h>
// Maximum index in IndexArray (for testing on overflows).
#define INVALID_INDEX STRING_NOTFOUND
class SwIndex;
class SwIndexReg;
struct SwPosition;
#ifdef DBG_UTIL
#define INLINE
#else
#define INLINE inline
#endif
/// Marks a character position inside a document model node.
class SW_DLLPUBLIC SwIndex
{
private:
friend class SwIndexReg;
xub_StrLen m_nIndex;
SwIndexReg * m_pIndexReg;
// doubly linked list of Indexes registered at m_pIndexReg
SwIndex * m_pNext;
SwIndex * m_pPrev;
SwIndex& ChgValue( const SwIndex& rIdx, xub_StrLen nNewValue );
void Init(xub_StrLen const nIdx);
void Remove();
public:
explicit SwIndex(SwIndexReg *const pReg, xub_StrLen const nIdx = 0);
SwIndex( const SwIndex & );
SwIndex( const SwIndex &, short nDiff );
~SwIndex() { Remove(); }
INLINE SwIndex& operator=( xub_StrLen const );
SwIndex& operator=( const SwIndex & );
INLINE xub_StrLen operator++();
INLINE xub_StrLen operator--();
INLINE xub_StrLen operator++(int);
INLINE xub_StrLen operator--(int);
INLINE xub_StrLen operator+=( xub_StrLen const );
INLINE xub_StrLen operator-=( xub_StrLen const );
INLINE xub_StrLen operator+=( const SwIndex& );
INLINE xub_StrLen operator-=( const SwIndex& );
INLINE bool operator< ( const SwIndex& ) const;
INLINE bool operator<=( const SwIndex& ) const;
INLINE bool operator> ( const SwIndex& ) const;
INLINE bool operator>=( const SwIndex& ) const;
bool operator< ( xub_StrLen const nVal ) const { return m_nIndex < nVal; }
bool operator<=( xub_StrLen const nVal ) const { return m_nIndex <= nVal; }
bool operator> ( xub_StrLen const nVal ) const { return m_nIndex > nVal; }
bool operator>=( xub_StrLen const nVal ) const { return m_nIndex >= nVal; }
bool operator==( xub_StrLen const nVal ) const { return m_nIndex == nVal; }
bool operator!=( xub_StrLen const nVal ) const { return m_nIndex != nVal; }
bool operator==( const SwIndex& rSwIndex ) const
{
return (m_nIndex == rSwIndex.m_nIndex)
&& (m_pIndexReg == rSwIndex.m_pIndexReg);
}
bool operator!=( const SwIndex& rSwIndex ) const
{
return (m_nIndex != rSwIndex.m_nIndex)
|| (m_pIndexReg != rSwIndex.m_pIndexReg);
}
xub_StrLen GetIndex() const { return m_nIndex; }
// Assignments without creating a temporary object.
SwIndex &Assign(SwIndexReg *,xub_StrLen);
// Returns pointer to IndexArray (for RTTI at SwIndexReg).
const SwIndexReg* GetIdxReg() const { return m_pIndexReg; }
};
#undef INLINE
class SwIndexReg
{
friend class SwIndex;
friend bool sw_PosOk(const SwPosition & aPos);
const SwIndex * m_pFirst;
const SwIndex * m_pLast;
protected:
virtual void Update( SwIndex const & rPos, const xub_StrLen nChangeLen,
const bool bNegative = false, const bool bDelete = false );
void ChkArr();
bool HasAnyIndex() const { return 0 != m_pFirst; }
public:
explicit SwIndexReg();
virtual ~SwIndexReg();
/// rtti, derived classes might do the same. If so, one can cast typesavely
/// via SwIndexReg.
TYPEINFO();
void MoveTo( SwIndexReg& rArr );
};
#ifndef DBG_UTIL
inline xub_StrLen SwIndex::operator++()
{
return ChgValue( *this, m_nIndex+1 ).m_nIndex;
}
inline xub_StrLen SwIndex::operator--()
{
return ChgValue( *this, m_nIndex-1 ).m_nIndex;
}
inline xub_StrLen SwIndex::operator++(int)
{
xub_StrLen const nOldIndex = m_nIndex;
ChgValue( *this, m_nIndex+1 );
return nOldIndex;
}
inline xub_StrLen SwIndex::operator--(int)
{
xub_StrLen const nOldIndex = m_nIndex;
ChgValue( *this, m_nIndex-1 );
return nOldIndex;
}
inline xub_StrLen SwIndex::operator+=( xub_StrLen const nVal )
{
return ChgValue( *this, m_nIndex + nVal ).m_nIndex;
}
inline xub_StrLen SwIndex::operator-=( xub_StrLen const nVal )
{
return ChgValue( *this, m_nIndex - nVal ).m_nIndex;
}
inline xub_StrLen SwIndex::operator+=( const SwIndex& rIndex )
{
return ChgValue( *this, m_nIndex + rIndex.m_nIndex ).m_nIndex;
}
inline xub_StrLen SwIndex::operator-=( const SwIndex& rIndex )
{
return ChgValue( *this, m_nIndex - rIndex.m_nIndex ).m_nIndex;
}
inline bool SwIndex::operator< ( const SwIndex& rIndex ) const
{
return m_nIndex < rIndex.m_nIndex;
}
inline bool SwIndex::operator<=( const SwIndex& rIndex ) const
{
return m_nIndex <= rIndex.m_nIndex;
}
inline bool SwIndex::operator> ( const SwIndex& rIndex ) const
{
return m_nIndex > rIndex.m_nIndex;
}
inline bool SwIndex::operator>=( const SwIndex& rIndex ) const
{
return m_nIndex >= rIndex.m_nIndex;
}
inline SwIndex& SwIndex::operator= ( xub_StrLen const nVal )
{
if (m_nIndex != nVal)
{
ChgValue( *this, nVal );
}
return *this;
}
#endif // ifndef DBG_UTIL
#endif
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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