enhance useuniqueptr loplugin

teach it to look for the following sequence in a destructor:
delete m_pfoo;
m_pfoo = nullptr;

Change-Id: Icd6271a63a024e32b53cc9e599f8f59952160380
Reviewed-on: https://gerrit.libreoffice.org/37900
Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Noel Grandin <noel.grandin@collabora.co.uk>

2 files changed, 22 insertions, 4 deletions

diff --git a/sd/source/ui/app/optsitem.cxx b/sd/source/ui/app/optsitem.cxx
index cdbcacd330e4..f23f1fbc6059 100644
--- a/sd/source/ui/app/optsitem.cxx
+++ b/sd/source/ui/app/optsitem.cxx
@@ -86,6 +86,21 @@ SdOptionsGeneric::SdOptionsGeneric(sal_uInt16 nConfigId, const OUString& rSubTre
 {
 }
 
+SdOptionsGeneric::SdOptionsGeneric(SdOptionsGeneric const & rSource)
+{
+    operator=(rSource);
+}
+
+SdOptionsGeneric& SdOptionsGeneric::operator=(SdOptionsGeneric const & rSource)
+{
+    maSubTree = rSource.maSubTree;
+    mpCfgItem.reset(rSource.mpCfgItem ? new SdOptionsItem(*rSource.mpCfgItem) : nullptr );
+    mnConfigId = rSource.mnConfigId;
+    mbInit = rSource.mbInit;
+    mbEnableModify = rSource.mbEnableModify;
+    return *this;
+}
+
 void SdOptionsGeneric::Init() const
 {
     if( !mbInit )
@@ -93,7 +108,7 @@ void SdOptionsGeneric::Init() const
         SdOptionsGeneric* pThis = const_cast<SdOptionsGeneric*>(this);
 
         if( !mpCfgItem )
-            pThis->mpCfgItem = new SdOptionsItem( *this, maSubTree );
+            pThis->mpCfgItem.reset( new SdOptionsItem( *this, maSubTree ) );
 
         const Sequence< OUString >  aNames( GetPropertyNames() );
         const Sequence< Any >       aValues = mpCfgItem->GetProperties( aNames );
@@ -113,8 +128,6 @@ void SdOptionsGeneric::Init() const
 
 SdOptionsGeneric::~SdOptionsGeneric()
 {
-    delete mpCfgItem;
-    mpCfgItem = nullptr;
 }
 
 void SdOptionsGeneric::Commit( SdOptionsItem& rCfgItem ) const
diff --git a/sd/source/ui/inc/optsitem.hxx b/sd/source/ui/inc/optsitem.hxx
index 5bf26e738eff..5ff8e4cf7e81 100644
--- a/sd/source/ui/inc/optsitem.hxx
+++ b/sd/source/ui/inc/optsitem.hxx
@@ -27,6 +27,7 @@
 #include <svx/optgrid.hxx>
 #include <svx/dlgutil.hxx>
 #include "sddllapi.h"
+#include <memory>
 
 class SdOptions;
 
@@ -65,7 +66,8 @@ friend class SdOptionsItem;
 private:
 
     OUString                maSubTree;
-    SdOptionsItem*          mpCfgItem;
+    std::unique_ptr<SdOptionsItem>
+                            mpCfgItem;
     sal_uInt16              mnConfigId;
     bool                    mbInit          : 1;
     bool                    mbEnableModify  : 1;
@@ -87,8 +89,11 @@ protected:
 public:
 
                             SdOptionsGeneric( sal_uInt16 nConfigId, const OUString& rSubTree );
+                            SdOptionsGeneric( SdOptionsGeneric const & );
                             virtual ~SdOptionsGeneric();
 
+    SdOptionsGeneric&       operator=( SdOptionsGeneric const & );
+
     sal_uInt16              GetConfigId() const { return mnConfigId; }
 
     void                    EnableModify( bool bModify ) { mbEnableModify = bModify; }