Code and doc improvements

python/core/processing/qgsprocessingregistry.sip.in

@@ -107,10 +107,11 @@ according to some user configuration.
 .. seealso:: :py:func:`algorithmById`
 %End
 
-    void addParameterType( QgsProcessingParameterType *type );
+    void addParameterType( QgsProcessingParameterType *type /Transfer/ );
 %Docstring
 Register a new parameter type for processing.
-Will emit parameterTypeAdded
+Ownership is transferred to the registry.
+Will emit parameterTypeAdded.
 
 .. seealso:: :py:func:`removeParameterType`
 
@@ -120,7 +121,8 @@ Will emit parameterTypeAdded
     void removeParameterType( QgsProcessingParameterType *type );
 %Docstring
 Unregister a custom parameter type from processing.
-Will emit parameterTypeRemoved
+The type will be deleted.
+Will emit parameterTypeRemoved.
 
 .. seealso:: :py:func:`addParameterType`
 

src/core/processing/qgsprocessingregistry.h

@@ -134,17 +134,19 @@ class CORE_EXPORT QgsProcessingRegistry : public QObject
 
     /**
      * Register a new parameter type for processing.
-     * Will emit parameterTypeAdded
+     * Ownership is transferred to the registry.
+     * Will emit parameterTypeAdded.
      *
      * \see removeParameterType
      *
      * \since QGIS 3.2
      */
-    void addParameterType( QgsProcessingParameterType *type );
+    void addParameterType( QgsProcessingParameterType *type SIP_TRANSFER );
 
     /**
      * Unregister a custom parameter type from processing.
-     * Will emit parameterTypeRemoved
+     * The type will be deleted.
+     * Will emit parameterTypeRemoved.
      *
      * \see addParameterType
      *
@@ -196,7 +198,7 @@ class CORE_EXPORT QgsProcessingRegistry : public QObject
     QMap<QString, QgsProcessingProvider *> mProviders;
 
     //! Hash of available parameter types by id. This object owns the pointers.
-    QHash<QString, QgsProcessingParameterType *> mParameterTypes;
+    QMap<QString, QgsProcessingParameterType *> mParameterTypes;
 
 #ifdef SIP_RUN
     QgsProcessingRegistry( const QgsProcessingRegistry &other );