Update Aidge export to take a graph view has an argument instead of a...

Update Aidge export to take a graph view has an argument instead of a Scheduler has we do not need scheduled graph.

aidge_core/aidge_export_aidge/export.py

@@ -11,7 +11,7 @@ from aidge_core import ExportNode, generate_file
 
 
 def export(export_folder: str,
-           scheduler: aidge_core.Scheduler,
+           graph_view: aidge_core.GraphView,
            enable_python_binding: bool = True,
            ):
     export_folder_path = Path(export_folder)
@@ -52,12 +52,35 @@ def export(export_folder: str,
         # TODO: Add a main.py file ?
 
     ### Generating an export for each nodes and dnn file ###
-    ordered_nodes = scheduler.get_static_scheduling()
-
     list_configs = []  # List of headers to include in dnn.cpp to access attribute and parameters
     list_actions = []  # List of string to construct graph
     set_operator = set()
-    for node in ordered_nodes:
+    # Queue of Aidge nodes to explore, guarantee a topological exploration of the graph
+    open_nodes = list(graph_view.get_input_nodes())
+    # List of Aidge nodes already explored
+    closed_nodes = []
+
+    while open_nodes:
+        node = open_nodes.pop(0)
+        if node in closed_nodes:
+            continue  # Node already converted, moving on ...
+        parents_not_converted = False
+        # Check all parents have been converted
+        for parent in node.get_parents():
+            if parent is not None and \
+                    parent not in closed_nodes:
+                # If parents have not been converted, push back current node
+                if not parents_not_converted:
+                    open_nodes.insert(0, node)
+                    parents_not_converted = True
+                # Add to the stack the not converted parent as next node to convert
+                open_nodes.insert(0, parent)
+        if parents_not_converted:
+
+            continue
+        # Next nodes to treat are children of current node
+        open_nodes += list(node.get_children())
+
         if node.type() in supported_operators():
             set_operator.add(node.type())
             op = OPERATORS_REGISTRY[node.type()](node)
@@ -70,7 +93,7 @@ def export(export_folder: str,
             list_actions = op.forward(list_actions)
         else:
             raise RuntimeError(f"Operator: {node.type()} is not supported")
-
+        closed_nodes.append(node)
     # Generate full dnn.cpp
     aidge_core.generate_file(
         export_folder_path / "src/dnn.cpp",