tdf#89329: use shared_ptr for pImpl in slstitm

Change-Id: Icb9167f8e7612f40992e7146c0dce539c0b0eac7
Reviewed-on: https://gerrit.libreoffice.org/25632Reviewed-by: Noel Grandin <noelgrandin@gmail.com>
Tested-by: Noel Grandin <noelgrandin@gmail.com>

include/svl/slstitm.hxx

@@ -24,13 +24,14 @@
 #include <svl/svldllapi.h>
 #include <svl/poolitem.hxx>
 #include <com/sun/star/uno/Sequence.h>
+#include <memory>
 
 class SfxImpStringList;
 
 class SVL_DLLPUBLIC SfxStringListItem : public SfxPoolItem
 {
 protected:
-    SfxImpStringList*   pImp;
+    std::shared_ptr<SfxImpStringList>   pImpl;
 
 public:
     static SfxPoolItem* CreateDefault();

svl/source/items/slstitm.cxx

@@ -27,58 +27,53 @@
 #include <stringio.hxx>
 
 SfxPoolItem* SfxStringListItem::CreateDefault() { return new SfxStringListItem; }
+
 class SfxImpStringList
 {
 public:
-    sal_uInt16  nRefCount;
     std::vector<OUString>  aList;
 
-            SfxImpStringList() { nRefCount = 1; }
-            ~SfxImpStringList();
+    SfxImpStringList() {}
+    ~SfxImpStringList();
 };
 
 
 SfxImpStringList::~SfxImpStringList()
 {
-    DBG_ASSERT(nRefCount!=0xffff,"ImpList already deleted");
-    nRefCount = 0xffff;
 }
 
-SfxStringListItem::SfxStringListItem() :
-    pImp(nullptr)
+SfxStringListItem::SfxStringListItem()
 {
 }
 
 
 SfxStringListItem::SfxStringListItem( sal_uInt16 which, const std::vector<OUString>* pList ) :
-    SfxPoolItem( which ),
-    pImp(nullptr)
+    SfxPoolItem( which )
 {
     // FIXME: Putting an empty list does not work
     // Therefore the query after the count is commented out
     if( pList /*!!! && pList->Count() */ )
     {
-        pImp = new SfxImpStringList;
-        pImp->aList = *pList;
+        pImpl.reset(new SfxImpStringList);
+        pImpl->aList = *pList;
     }
 }
 
 
 SfxStringListItem::SfxStringListItem( sal_uInt16 which, SvStream& rStream ) :
-    SfxPoolItem( which ),
-    pImp(nullptr)
+    SfxPoolItem( which )
 {
     sal_Int32 nEntryCount;
     rStream.ReadInt32( nEntryCount );
 
     if( nEntryCount )
-        pImp = new SfxImpStringList;
+        pImpl.reset(new SfxImpStringList);
 
-    if (pImp)
+    if (pImpl)
     {
         for( sal_Int32 i=0; i < nEntryCount; i++ )
         {
-            pImp->aList.push_back( readByteString(rStream) );
+            pImpl->aList.push_back( readByteString(rStream) );
         }
     }
 }
@@ -86,35 +81,21 @@ SfxStringListItem::SfxStringListItem( sal_uInt16 which, SvStream& rStream ) :
 
 SfxStringListItem::SfxStringListItem( const SfxStringListItem& rItem ) :
     SfxPoolItem( rItem ),
-    pImp(rItem.pImp)
+    pImpl(rItem.pImpl.get())
 {
-    if( pImp )
-    {
-        DBG_ASSERT(pImp->nRefCount!=0xffff,"ImpList not valid");
-        pImp->nRefCount++;
-    }
 }
 
 
 SfxStringListItem::~SfxStringListItem()
 {
-    if( pImp )
-    {
-        DBG_ASSERT(pImp->nRefCount!=0xffff,"ImpList not valid");
-        if( pImp->nRefCount > 1 )
-            pImp->nRefCount--;
-        else
-            delete pImp;
-    }
 }
 
 
 std::vector<OUString>& SfxStringListItem::GetList()
 {
-    if( !pImp )
-        pImp = new SfxImpStringList;
-    DBG_ASSERT(pImp->nRefCount!=0xffff,"ImpList not valid");
-    return pImp->aList;
+    if( !pImpl )
+        pImpl.reset( new SfxImpStringList );
+    return pImpl->aList;
 }
 
 const std::vector<OUString>& SfxStringListItem::GetList () const
@@ -129,7 +110,7 @@ bool SfxStringListItem::operator==( const SfxPoolItem& rItem ) const
 
     const SfxStringListItem& rSSLItem = static_cast<const SfxStringListItem&>(rItem);
 
-    return pImp == rSSLItem.pImp;
+    return pImpl == rSSLItem.pImpl;
 }
 
 
@@ -150,13 +131,6 @@ bool SfxStringListItem::GetPresentation
 SfxPoolItem* SfxStringListItem::Clone( SfxItemPool *) const
 {
     return new SfxStringListItem( *this );
-    /*
-    if( pImp )
-        return new SfxStringListItem( Which(), &(pImp->aList) );
-    else
-        return new SfxStringListItem( Which(), NULL );
-    */
-
 }
 
 
@@ -168,19 +142,17 @@ SfxPoolItem* SfxStringListItem::Create( SvStream & rStream, sal_uInt16 ) const
 
 SvStream& SfxStringListItem::Store( SvStream & rStream, sal_uInt16 ) const
 {
-    if( !pImp )
+    if( !pImpl )
     {
         rStream.WriteInt32( 0 );
         return rStream;
     }
 
-    DBG_ASSERT(pImp->nRefCount!=0xffff,"ImpList not valid");
-
-    sal_uInt32 nCount = pImp->aList.size();
+    sal_uInt32 nCount = pImpl->aList.size();
     rStream.WriteUInt32( nCount );
 
     for( sal_uInt32 i=0; i < nCount; i++ )
-        writeByteString(rStream, pImp->aList[i]);
+        writeByteString(rStream, pImpl->aList[i]);
 
     return rStream;
 }
@@ -188,13 +160,7 @@ SvStream& SfxStringListItem::Store( SvStream & rStream, sal_uInt16 ) const
 
 void SfxStringListItem::SetString( const OUString& rStr )
 {
-    DBG_ASSERT(GetRefCount()==0,"SetString:RefCount!=0");
-
-    if ( pImp && (pImp->nRefCount == 1) )
-        delete pImp;
-    else if( pImp )
-        pImp->nRefCount--;
-    pImp = new SfxImpStringList;
+    pImpl.reset( new SfxImpStringList );
 
     sal_Int32 nStart = 0;
     OUString aStr(convertLineEnd(rStr, LINEEND_CR));
@@ -206,12 +172,12 @@ void SfxStringListItem::SetString( const OUString& rStr )
             if (nStart<aStr.getLength())
             {
                 // put last string only if not empty
-                pImp->aList.push_back(aStr.copy(nStart));
+                pImpl->aList.push_back(aStr.copy(nStart));
             }
             break;
         }
 
-        pImp->aList.push_back(aStr.copy(nStart, nDelimPos-nStart));
+        pImpl->aList.push_back(aStr.copy(nStart, nDelimPos-nStart));
 
         // skip both inserted string and delimiter
         nStart = nDelimPos + 1 ;
@@ -222,17 +188,15 @@ void SfxStringListItem::SetString( const OUString& rStr )
 OUString SfxStringListItem::GetString()
 {
     OUString aStr;
-    if ( pImp )
+    if ( pImpl )
     {
-        DBG_ASSERT(pImp->nRefCount!=0xffff,"ImpList not valid");
-
-        std::vector<OUString>::const_iterator iter = pImp->aList.begin();
+        std::vector<OUString>::const_iterator iter = pImpl->aList.begin();
         for (;;)
         {
             aStr += *iter;
             ++iter;
 
-            if (iter == pImp->aList.end())
+            if (iter == pImpl->aList.end())
                 break;
 
             aStr += "\r";
@@ -244,26 +208,20 @@ OUString SfxStringListItem::GetString()
 
 void SfxStringListItem::SetStringList( const css::uno::Sequence< OUString >& rList )
 {
-    DBG_ASSERT(GetRefCount()==0,"SetString:RefCount!=0");
-
-    if ( pImp && (pImp->nRefCount == 1) )
-        delete pImp;
-    else if( pImp )
-        pImp->nRefCount--;
-    pImp = new SfxImpStringList;
+    pImpl.reset(new SfxImpStringList);
 
     // String belongs to the list
     for ( sal_Int32 n = 0; n < rList.getLength(); n++ )
-        pImp->aList.push_back(rList[n]);
+        pImpl->aList.push_back(rList[n]);
 }
 
 void SfxStringListItem::GetStringList( css::uno::Sequence< OUString >& rList ) const
 {
-    long nCount = pImp->aList.size();
+    long nCount = pImpl->aList.size();
 
     rList.realloc( nCount );
     for( long i=0; i < nCount; i++ )
-        rList[i] = pImp->aList[i];
+        rList[i] = pImpl->aList[i];
 }
 
 // virtual