Temporarily make QgsProcessingAlgorithm::run non pure-virtual (for travis)

Author: nyalldawson

python/core/processing/qgsprocessingalgorithm.sip

@@ -113,7 +113,7 @@ class QgsProcessingAlgorithm
     void setProvider( QgsProcessingProvider *provider );
 
     virtual bool run( const QVariantMap &parameters,
-                      QgsProcessingContext &context, QgsProcessingFeedback *feedback, QVariantMap &outputs /Out/ ) const = 0;
+                      QgsProcessingContext &context, QgsProcessingFeedback *feedback, QVariantMap &outputs /Out/ ) const;
 %Docstring
  Runs the algorithm using the specified ``parameters``. Algorithms should implement
  their custom processing logic here.

src/core/processing/qgsnativealgorithms.cpp

@@ -78,7 +78,7 @@ bool QgsBufferAlgorithm::run( const QVariantMap &parameters, QgsProcessingContex
   std::unique_ptr< QgsFeatureSink > writer( QgsProcessingUtils::createFeatureSink( dest, QString(), layer->fields(), QgsWkbTypes::Point, layer->crs(), context, outputLayer ) );
 
   // fixed parameters
-  bool dissolve = QgsProcessingParameters::parameterAsBool( parameters, QStringLiteral( "DISSOLVE" ), context );
+  //bool dissolve = QgsProcessingParameters::parameterAsBool( parameters, QStringLiteral( "DISSOLVE" ), context );
   int segments = QgsProcessingParameters::parameterAsInt( parameters, QStringLiteral( "DISSOLVE" ), context );
   QgsGeometry::EndCapStyle endCapStyle = static_cast< QgsGeometry::EndCapStyle >( QgsProcessingParameters::parameterAsInt( parameters, QStringLiteral( "END_CAP_STYLE" ), context ) );
   QgsGeometry::JoinStyle joinStyle = static_cast< QgsGeometry::JoinStyle>( QgsProcessingParameters::parameterAsInt( parameters, QStringLiteral( "JOIN_STYLE" ), context ) );

src/core/processing/qgsprocessingalgorithm.cpp

@@ -51,3 +51,8 @@ void QgsProcessingAlgorithm::setProvider( QgsProcessingProvider *provider )
 {
   mProvider = provider;
 }
+
+bool QgsProcessingAlgorithm::run( const QVariantMap &, QgsProcessingContext &, QgsProcessingFeedback *, QVariantMap & ) const
+{
+  return true;
+}

src/core/processing/qgsprocessingalgorithm.h

@@ -142,7 +142,7 @@ class CORE_EXPORT QgsProcessingAlgorithm
      * \returns true if algorithm run was successful, or false if run was unsuccessful.
      */
     virtual bool run( const QVariantMap &parameters,
-                      QgsProcessingContext &context, QgsProcessingFeedback *feedback, QVariantMap &outputs SIP_OUT ) const = 0;
+                      QgsProcessingContext &context, QgsProcessingFeedback *feedback, QVariantMap &outputs SIP_OUT ) const;
 
   private: