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diff --git a/source/blender/compositor/intern/COM_ExecutionSystemHelper.h b/source/blender/compositor/intern/COM_ExecutionSystemHelper.h
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+/*
+ * Copyright 2011, Blender Foundation.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ *
+ * Contributor: 
+ *		Jeroen Bakker 
+ *		Monique Dewanchand
+ */
+
+class ExecutionGroup;
+
+#ifndef _COM_ExecutionSystemHelper_h
+#define _COM_ExecutionSystemHelper_h
+
+#include "DNA_node_types.h"
+#include <vector>
+#include "COM_Node.h"
+#include "COM_SocketConnection.h"
+#include "BKE_text.h"
+#include "COM_ExecutionGroup.h"
+
+using namespace std;
+
+/**
+ *
+ */
+class ExecutionSystemHelper {
+
+public:
+
+	/**
+	  * @brief add an bNodeTree to the nodes list and connections
+	  * @param system Execution system
+	  * @param nodes_start Starting index in the system's nodes list for nodes in this tree.
+	  * @param tree bNodeTree to add
+	  * @return Node representing the "Compositor node" of the maintree. or NULL when a subtree is added
+	  */
+	static Node* addbNodeTree(ExecutionSystem &system, int nodes_start, bNodeTree * tree);
+	
+	/**
+	  * @brief add an editor node to the system.
+	  * this node is converted to a Node instance.
+	  * and the converted node is returned
+	  *
+	  * @param bNode node to add
+	  * @return Node that represents the bNode or null when not able to convert.
+	  */
+	static Node* addNode(vector<Node*>& nodes, bNode* bNode);
+	
+	/**
+	  * @brief Add a Node to a list
+	  *
+	  * @param nodes the list where the node needs to be added to
+	  * @param node the node to be added
+	  */
+	static void addNode(vector<Node*>& nodes, Node* node);
+	
+	/**
+	  * @brief Add an operation to the operation list
+	  *
+	  * The id of the operation is updated.
+	  *
+	  * @param operations the list where the operation need to be added to
+	  * @param operation the operation to add
+	  */
+	static void addOperation(vector<NodeOperation*> &operations, NodeOperation* operation);
+	
+	/**
+	  * @brief Add an ExecutionGroup to a list
+	  *
+	  * The id of the ExecutionGroup is updated.
+	  *
+	  * @param executionGroups the list where the executionGroup need to be added to
+	  * @param executionGroup the ExecutionGroup to add
+	  */
+	static void addExecutionGroup(vector<ExecutionGroup*>& executionGroups, ExecutionGroup *executionGroup);
+	
+	/**
+	  * Find all Node Operations that needs to be executed.
+	  * @param rendering
+	  * the rendering parameter will tell what type of execution we are doing
+	  * FALSE is editing, TRUE is rendering
+	  */
+	static void findOutputNodeOperations(vector<NodeOperation*>* result, vector<NodeOperation*>& operations , bool rendering);
+	
+	/**
+	  * @brief add a bNodeLink to the list of links
+	  * the bNodeLink will be wrapped in a SocketConnection
+	  *
+	  * @note Cyclic links will be ignored
+	  *
+	  * @param node_range list of possible nodes for lookup.
+	  * @param links list of links to add the bNodeLink to
+	  * @param bNodeLink the link to be added
+	  * @return the created SocketConnection or NULL
+	  */
+	static SocketConnection* addNodeLink(NodeRange &node_range, vector<SocketConnection*>& links, bNodeLink *bNodeLink);
+	
+	/**
+	  * @brief create a new SocketConnection and add to a vector of links
+	  * @param links the vector of links
+	  * @param fromSocket the startpoint of the connection
+	  * @param toSocket the endpoint of the connection
+	  * @return the new created SocketConnection
+	  */
+	static SocketConnection* addLink(vector<SocketConnection*>& links, OutputSocket* fromSocket, InputSocket* toSocket);
+	
+	/**
+	  * @brief dumps the content of the execution system to standard out
+	  * @param system the execution system to dump
+	  */
+	static void debugDump(ExecutionSystem* system);
+};
+#endif