Add missing proxy calls for QgsProcessingFeatureSource, causing

inefficient base class methods to be used instead.

Author: nyalldawson

python/core/processing/qgsprocessingutils.sip

@@ -273,6 +273,10 @@ class QgsProcessingFeatureSource : QgsFeatureSource
 
     virtual QVariant maximumValue( int fieldIndex ) const;
 
+    virtual QgsRectangle sourceExtent() const;
+
+    virtual QgsFeatureIds allFeatureIds() const;
+
 
     QgsExpressionContextScope *createExpressionContextScope() const /Factory/;
 %Docstring

src/core/processing/qgsprocessingutils.cpp

@@ -729,6 +729,16 @@ QVariant QgsProcessingFeatureSource::maximumValue( int fieldIndex ) const
   return mSource->maximumValue( fieldIndex );
 }
 
+QgsRectangle QgsProcessingFeatureSource::sourceExtent() const
+{
+  return mSource->sourceExtent();
+}
+
+QgsFeatureIds QgsProcessingFeatureSource::allFeatureIds() const
+{
+  return mSource->allFeatureIds();
+}
+
 QgsExpressionContextScope *QgsProcessingFeatureSource::createExpressionContextScope() const
 {
   QgsExpressionContextScope *expressionContextScope = nullptr;

src/core/processing/qgsprocessingutils.h

@@ -318,6 +318,8 @@ class CORE_EXPORT QgsProcessingFeatureSource : public QgsFeatureSource
     QSet<QVariant> uniqueValues( int fieldIndex, int limit = -1 ) const override;
     QVariant minimumValue( int fieldIndex ) const override;
     QVariant maximumValue( int fieldIndex ) const override;
+    QgsRectangle sourceExtent() const override;
+    QgsFeatureIds allFeatureIds() const override;
 
     /**
      * Returns an expression context scope suitable for this source.