diff -r 2c786431fe72 -r 8106a853a7c7 plugins/c_ext/c_ext.py
--- a/plugins/c_ext/c_ext.py	Thu Sep 24 18:26:11 2009 +0200
+++ b/plugins/c_ext/c_ext.py	Thu Sep 24 18:27:45 2009 +0200
@@ -1,11 +1,13 @@
 import wx
 import os
+from xml.dom import minidom
+import cPickle
+
+from xmlclass import *
+
 from plugger import PlugTemplate
 from CFileEditor import CFileEditor
-
-from xml.dom import minidom
-from xmlclass import *
-import cPickle
+from PLCControler import PLCControler, LOCATION_PLUGIN, LOCATION_MODULE, LOCATION_GROUP, LOCATION_VAR_INPUT, LOCATION_VAR_OUTPUT, LOCATION_VAR_MEMORY
 
 CFileClasses = GenerateClassesFromXSD(os.path.join(os.path.dirname(__file__), "cext_xsd.xsd")) 
 
@@ -158,6 +160,33 @@
             datas.append({"Name" : var.getname(), "Type" : var.gettype(), "Class" : var.getclass()})
         return datas
 
+    def GetVariableLocationTree(self):
+        '''See PlugTemplate.GetVariableLocationTree() for a description.'''
+
+        current_location = ".".join(map(str, self.GetCurrentLocation()))
+        
+        vars = []
+        input = output = 0
+        for var in self.CFile.variables.getvariable():
+            var_size = self.GetSizeOfType(var.gettype())
+            if var.getclass() == "input":
+                var_class = LOCATION_VAR_INPUT
+                var_location = "%%I%s%s.%d"%(var_size, current_location, input)
+                input += 1
+            else:
+                var_class = LOCATION_VAR_OUTPUT
+                var_location = "%%Q%s%s.%d"%(var_size, current_location, output)
+                output += 1
+            vars.append({"name": var.getname(),
+                         "type": var_class,
+                         "size": var_size,
+                         "IEC_type": var.gettype(),
+                         "location": var_location,
+                         "description": "",
+                         "children": []})
+                
+        return vars
+
     def SetPartText(self, name, text):
         if name == "Includes":
             self.CFile.includes.settext(text)
@@ -237,7 +266,7 @@
         """
         current_location = self.GetCurrentLocation()
         # define a unique name for the generated C file
-        location_str = "_".join(map(lambda x:str(x), current_location))
+        location_str = "_".join(map(str, current_location))
         
         text = "/* Code generated by Beremiz c_ext plugin */\n\n"