created file extension file to make editable (in common folder)

openfasoc/generators/common/__init__.py

@@ -9,6 +9,7 @@
 	1. `run_simulations()`: Used to run SPICE testbenches with multiple parameters.
 - `common.check_gen_files`
 	1. `check_gen_files()`: Used to check if the various files that should be generated by the flow are present in their required directories. 
-
+- `common.check_gen_extensions`
+	1. Stores the extensions of the files generated by the flow. 
 See individual function documentation for more information on a particular function.
 """

openfasoc/generators/common/check_gen_extensions

@@ -0,0 +1,6 @@
+.gds
+.spice
+.v
+_pex.spice
+.sdc
+.def

openfasoc/generators/common/check_gen_files.py

@@ -15,10 +15,23 @@ def check_gen_files():
         raise ValueError("work directory does not exist!")
     else:
         filename = work_dir + module_name
-        for file in (filename + ".gds", filename + ".spice", filename + ".v", filename + ".def", filename + "_pex.spice", filename + ".sdc"):
-            if (os.path.exists(file) == 0):
-                raise ValueError(file + " does not exist!")
+        extension_file_path = "../common/check_gen_extensions"
 
+        if os.path.exists(extension_file_path):
+            with open(extension_file_path) as f:
+
+                for extension in f:
+                    file = "".join([filename, extension.strip()])
+                    if (os.path.exists(file) == 0):
+                        raise ValueError(file + " does not exist!")
+        else: 
+            print("checking flow results with possibly stale list of extensions...")
+            extensions = [".sdc", ".gds", ".def", ".spice", ".v", "_pex.spice"]
+            for extension in extensions:
+                    file = "".join([filename, extension])
+
+                    if (os.path.exists(file) == 0):
+                        raise ValueError(file + " does not exist!")
     # print("Found necessary work result files!")
 
     for file in ("error_within_x.csv", "golden_error_opt.csv", "search_result.csv"):