Use std::unique_ptr for LayerFeature

Author: m-kuhn

src/analysis/vector/geometry_checker/qgsgeometrycheckerutils.cpp

@@ -97,13 +97,38 @@ QgsGeometryCheckerUtils::LayerFeatures::iterator::iterator( const QStringList::c
   nextLayerFeature( true );
 }
 
+QgsGeometryCheckerUtils::LayerFeatures::iterator::iterator( const QgsGeometryCheckerUtils::LayerFeatures::iterator &rh )
+{
+  mLayerIt = rh.mLayerIt;
+  mFeatureIt = rh.mFeatureIt;
+  mParent = rh.mParent;
+  mCurrentFeature = qgis::make_unique<LayerFeature>( *rh.mCurrentFeature.get() );
+}
+
 bool QgsGeometryCheckerUtils::LayerFeature::useMapCrs() const
 {
   return mMapCrs;
 }
 QgsGeometryCheckerUtils::LayerFeatures::iterator::~iterator()
 {
-  delete mCurrentFeature;
+}
+
+QgsGeometryCheckerUtils::LayerFeatures::iterator QgsGeometryCheckerUtils::LayerFeatures::iterator::operator++( int )
+{
+  iterator tmp( *this );
+  ++*this;
+  return tmp;
+}
+
+const QgsGeometryCheckerUtils::LayerFeature &QgsGeometryCheckerUtils::LayerFeatures::iterator::operator*() const
+{
+  Q_ASSERT( mCurrentFeature );
+  return *mCurrentFeature;
+}
+
+bool QgsGeometryCheckerUtils::LayerFeatures::iterator::operator!=( const QgsGeometryCheckerUtils::LayerFeatures::iterator &other )
+{
+  return mLayerIt != other.mLayerIt || mFeatureIt != other.mFeatureIt;
 }
 
 const QgsGeometryCheckerUtils::LayerFeatures::iterator &QgsGeometryCheckerUtils::LayerFeatures::iterator::operator++()
@@ -127,8 +152,7 @@ bool QgsGeometryCheckerUtils::LayerFeatures::iterator::nextLayerFeature( bool be
   }
   // End
   mFeatureIt = QgsFeatureIds::const_iterator();
-  delete mCurrentFeature;
-  mCurrentFeature = nullptr;
+  mCurrentFeature.reset();
   return false;
 }
 
@@ -173,8 +197,7 @@ bool QgsGeometryCheckerUtils::LayerFeatures::iterator::nextFeature( bool begin )
     QgsFeature feature;
     if ( featurePool->getFeature( *mFeatureIt, feature ) && feature.geometry() && feature.geometry().constGet() )
     {
-      delete mCurrentFeature;
-      mCurrentFeature = new LayerFeature( mParent->mFeaturePools[*mLayerIt], feature, mParent->mContext, mParent->mUseMapCrs );
+      mCurrentFeature.reset( new LayerFeature( mParent->mFeaturePools[*mLayerIt], feature, mParent->mContext, mParent->mUseMapCrs ) );
       return true;
     }
     ++mFeatureIt;
@@ -225,6 +248,16 @@ QgsGeometryCheckerUtils::LayerFeatures::LayerFeatures( const QMap<QString, QgsFe
   }
 }
 
+QgsGeometryCheckerUtils::LayerFeatures::iterator QgsGeometryCheckerUtils::LayerFeatures::begin() const
+{
+  return iterator( mLayerIds.constBegin(), this );
+}
+
+QgsGeometryCheckerUtils::LayerFeatures::iterator QgsGeometryCheckerUtils::LayerFeatures::end() const
+{
+  return iterator( mLayerIds.end(), this );
+}
+
 /////////////////////////////////////////////////////////////////////////////
 
 std::unique_ptr<QgsGeometryEngine> QgsGeometryCheckerUtils::createGeomEngine( const QgsAbstractGeometry *geometry, double tolerance )

src/analysis/vector/geometry_checker/qgsgeometrycheckerutils.h

@@ -101,24 +101,25 @@ class ANALYSIS_EXPORT QgsGeometryCheckerUtils
         {
           public:
             iterator( const QList<QString>::const_iterator &layerIt, const LayerFeatures *parent );
+            iterator( const iterator &rh );
             ~iterator();
             const iterator &operator++();
-            iterator operator++( int ) { iterator tmp( *this ); ++*this; return tmp; }
-            const LayerFeature &operator*() const { Q_ASSERT( mCurrentFeature ); return *mCurrentFeature; }
-            bool operator!=( const iterator &other ) { return mLayerIt != other.mLayerIt || mFeatureIt != other.mFeatureIt; }
+            iterator operator++( int );
+            const LayerFeature &operator*() const;
+            bool operator!=( const iterator &other );
 
           private:
             bool nextLayerFeature( bool begin );
             bool nextLayer( bool begin );
             bool nextFeature( bool begin );
             QList<QString>::const_iterator mLayerIt;
             QgsFeatureIds::const_iterator mFeatureIt;
-            const LayerFeatures *mParent;
-            const LayerFeature *mCurrentFeature = nullptr;
+            const LayerFeatures *mParent = nullptr;
+            std::unique_ptr<LayerFeature> mCurrentFeature;
         };
 
-        iterator begin() const { return iterator( mLayerIds.constBegin(), this ); }
-        iterator end() const { return iterator( mLayerIds.end(), this ); }
+        iterator begin() const;
+        iterator end() const;
 
 #endif