LCOV - code coverage report
Current view: top level - include/tools - ref.hxx (source / functions) Hit Total Coverage
Test: commit e02a6cb2c3e2b23b203b422e4e0680877f232636 Lines: 2 77 2.6 %
Date: 2014-04-14 Functions: 2 452 0.4 %
Legend: Lines: hit not hit

          Line data    Source code
       1             : /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
       2             : /*
       3             :  * This file is part of the LibreOffice project.
       4             :  *
       5             :  * This Source Code Form is subject to the terms of the Mozilla Public
       6             :  * License, v. 2.0. If a copy of the MPL was not distributed with this
       7             :  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
       8             :  *
       9             :  * This file incorporates work covered by the following license notice:
      10             :  *
      11             :  *   Licensed to the Apache Software Foundation (ASF) under one or more
      12             :  *   contributor license agreements. See the NOTICE file distributed
      13             :  *   with this work for additional information regarding copyright
      14             :  *   ownership. The ASF licenses this file to you under the Apache
      15             :  *   License, Version 2.0 (the "License"); you may not use this file
      16             :  *   except in compliance with the License. You may obtain a copy of
      17             :  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
      18             :  */
      19             : #ifndef INCLUDED_TOOLS_REF_HXX
      20             : #define INCLUDED_TOOLS_REF_HXX
      21             : 
      22             : #include <tools/toolsdllapi.h>
      23             : #include <vector>
      24             : 
      25             : namespace tools {
      26             : 
      27             : template<typename T> class SvRef {
      28             : public:
      29           0 :     SvRef(): pObj(0) {}
      30             : 
      31           0 :     SvRef(SvRef const & rObj): pObj(rObj.pObj)
      32           0 :     { if (pObj != 0) pObj->AddNextRef(); }
      33             : 
      34           2 :     SvRef(T * pObjP): pObj(pObjP) { if (pObj != 0) pObj->AddRef(); }
      35             : 
      36           2 :     ~SvRef() { if (pObj != 0) pObj->ReleaseReference(); }
      37             : 
      38           0 :     void Clear() {
      39           0 :         if (pObj != 0) {
      40           0 :             T * pRefObj = pObj;
      41           0 :             pObj = 0;
      42           0 :             pRefObj->ReleaseReference();
      43             :         }
      44           0 :     }
      45             : 
      46           0 :     SvRef & operator =(SvRef const & rObj) {
      47           0 :         if (rObj.pObj != 0) {
      48           0 :             rObj.pObj->AddNextRef();
      49             :         }
      50           0 :         T * pRefObj = pObj;
      51           0 :         pObj = rObj.pObj;
      52           0 :         if (pRefObj != 0) {
      53           0 :             pRefObj->ReleaseReference();
      54             :         }
      55           0 :         return *this;
      56             :     }
      57             : 
      58           0 :     bool Is() const { return pObj != 0; }
      59             : 
      60           0 :     T * operator &() const { return pObj; }
      61             : 
      62           0 :     T * operator ->() const { return pObj; }
      63             : 
      64           0 :     T & operator *() const { return *pObj; }
      65             : 
      66           0 :     operator T *() const { return pObj; }
      67             : 
      68             : protected:
      69             :     T * pObj;
      70             : };
      71             : 
      72             : }
      73             : 
      74             : template<typename T>
      75           0 : class SvRefMemberList : private std::vector<T>
      76             : {
      77             : private:
      78             :     typedef typename std::vector<T> base_t;
      79             : 
      80             : public:
      81             :     using base_t::size;
      82             :     using base_t::front;
      83             :     using base_t::back;
      84             :     using base_t::operator[];
      85             :     using base_t::begin;
      86             :     using base_t::end;
      87             :     using typename base_t::iterator;
      88             :     using typename base_t::const_iterator;
      89             :     using base_t::rbegin;
      90             :     using base_t::rend;
      91             :     using typename base_t::reverse_iterator;
      92             :     using base_t::empty;
      93             : 
      94           0 :     inline ~SvRefMemberList() { clear(); }
      95           0 :     inline void clear()
      96             :     {
      97           0 :         for( typename base_t::const_iterator it = base_t::begin(); it != base_t::end(); ++it )
      98             :         {
      99           0 :               T p = *it;
     100           0 :               if( p )
     101           0 :                   p->ReleaseReference();
     102             :         }
     103           0 :         base_t::clear();
     104           0 :     }
     105             : 
     106           0 :     inline void push_back( T p )
     107             :     {
     108           0 :         base_t::push_back( p );
     109           0 :         p->AddRef();
     110           0 :     }
     111             : 
     112           0 :     inline void insert(const SvRefMemberList& rOther)
     113             :     {
     114           0 :        for( typename base_t::const_iterator it = rOther.begin(); it != rOther.end(); ++it )
     115             :        {
     116           0 :            push_back(*it);
     117             :        }
     118           0 :     }
     119             : 
     120           0 :     inline T pop_back()
     121             :     {
     122           0 :         T p = base_t::back();
     123           0 :         base_t::pop_back();
     124           0 :         if( p )
     125           0 :             p->ReleaseReference();
     126           0 :         return p;
     127             :     }
     128             : };
     129             : 
     130             : #define SV_NO_DELETE_REFCOUNT  0x80000000
     131             : 
     132             : class TOOLS_DLLPUBLIC SvRefBase
     133             : {
     134             :     sal_uIntPtr nRefCount;
     135             : 
     136             : protected:
     137             :     virtual         ~SvRefBase();
     138             :     virtual void    QueryDelete();
     139             : 
     140             : public:
     141           0 :                     SvRefBase() { nRefCount = SV_NO_DELETE_REFCOUNT; }
     142           0 :                     SvRefBase( const SvRefBase & /* rObj */ )
     143           0 :                     { nRefCount = SV_NO_DELETE_REFCOUNT; }
     144           0 :     SvRefBase &     operator = ( const SvRefBase & ) { return *this; }
     145             : 
     146           0 :     void            RestoreNoDelete()
     147             :                     {
     148           0 :                         if( nRefCount < SV_NO_DELETE_REFCOUNT )
     149           0 :                             nRefCount += SV_NO_DELETE_REFCOUNT;
     150           0 :                     }
     151           0 :     sal_uIntPtr     AddNextRef() { return ++nRefCount; }
     152           0 :     sal_uIntPtr     AddRef()
     153             :                     {
     154           0 :                         if( nRefCount >= SV_NO_DELETE_REFCOUNT )
     155           0 :                             nRefCount -= SV_NO_DELETE_REFCOUNT;
     156           0 :                         return ++nRefCount;
     157             :                     }
     158           0 :     void            ReleaseReference()
     159             :                     {
     160           0 :                         if( !--nRefCount )
     161           0 :                             QueryDelete();
     162           0 :                     }
     163           0 :     sal_uIntPtr     ReleaseRef()
     164             :                     {
     165           0 :                         sal_uIntPtr n = --nRefCount;
     166           0 :                         if( !n )
     167           0 :                             QueryDelete();
     168           0 :                         return n;
     169             :                     }
     170           0 :     sal_uIntPtr     GetRefCount() const { return nRefCount; }
     171             : };
     172             : 
     173             : typedef tools::SvRef<SvRefBase> SvRefBaseRef;
     174             : 
     175           0 : class SvCompatWeakHdl : public SvRefBase
     176             : {
     177             :     friend class SvCompatWeakBase;
     178             :     void* _pObj;
     179           0 :     SvCompatWeakHdl( void* pObj ) : _pObj( pObj ) {}
     180             : 
     181             : public:
     182           0 :     void ResetWeakBase( ) { _pObj = 0; }
     183           0 :     void* GetObj() { return _pObj; }
     184             : };
     185             : 
     186             : typedef tools::SvRef<SvCompatWeakHdl> SvCompatWeakHdlRef;
     187             : 
     188             : class SvCompatWeakBase
     189             : {
     190             :     SvCompatWeakHdlRef _xHdl;
     191             : 
     192             : public:
     193           0 :     SvCompatWeakHdl* GetHdl() { return _xHdl; }
     194             : 
     195             :     // does not use Initalizer due to compiler warnings
     196           0 :     SvCompatWeakBase( void* pObj ) { _xHdl = new SvCompatWeakHdl( pObj ); }
     197           0 :     ~SvCompatWeakBase() { _xHdl->ResetWeakBase(); }
     198             : };
     199             : 
     200             : #define SV_DECL_COMPAT_WEAK( ClassName )                            \
     201             : class ClassName##Weak                                               \
     202             : {                                                                   \
     203             :     SvCompatWeakHdlRef _xHdl;                                       \
     204             : public:                                                             \
     205             :     inline               ClassName##Weak( ) {}                      \
     206             :     inline               ClassName##Weak( ClassName* pObj ) {       \
     207             :         if( pObj ) _xHdl = pObj->GetHdl(); }                        \
     208             :     inline void          Clear() { _xHdl.Clear(); }                 \
     209             :     inline ClassName##Weak& operator = ( ClassName * pObj ) {       \
     210             :         _xHdl = pObj ? pObj->GetHdl() : 0; return *this; }          \
     211             :     inline bool            Is() const {                         \
     212             :         return _xHdl.Is() && _xHdl->GetObj(); }                     \
     213             :     inline ClassName *     operator &  () const {                   \
     214             :         return (ClassName*) ( _xHdl.Is() ? _xHdl->GetObj() : 0 ); } \
     215             :     inline ClassName *     operator -> () const {                   \
     216             :         return (ClassName*) ( _xHdl.Is() ? _xHdl->GetObj() : 0 ); } \
     217             :     inline ClassName &     operator *  () const {                   \
     218             :         return *(ClassName*) _xHdl->GetObj(); }                     \
     219             :     inline operator ClassName * () const {                          \
     220             :         return (ClassName*) (_xHdl.Is() ? _xHdl->GetObj() : 0 ); }  \
     221             : };
     222             : 
     223             : #endif
     224             : 
     225             : /* vim:set shiftwidth=4 softtabstop=4 expandtab: */

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