Add typing for all version upgrade plug-ins

Hopefully we'll take this typing along when we next copy-paste the stuffs.

Contributes to issue CURA-5936.

plugins/VersionUpgrade/VersionUpgrade34to35/VersionUpgrade34to35.py

@@ -3,13 +3,14 @@
 
 import configparser
 import io
+from typing import Dict, List, Set, Tuple
 
 from UM.VersionUpgrade import VersionUpgrade
 
-deleted_settings = {"prime_tower_wall_thickness", "dual_pre_wipe", "prime_tower_purge_volume"}
+deleted_settings = {"prime_tower_wall_thickness", "dual_pre_wipe", "prime_tower_purge_volume"} # type: Set[str]
 
-changed_settings = {'retraction_combing': 'noskin'}
-updated_settings = {'retraction_combing': 'infill'}
+changed_settings = {"retraction_combing": "noskin"} # type: Dict[str, str]
+updated_settings = {"retraction_combing": "infill"} # type: Dict[str, str]
 
 _RENAMED_MATERIAL_PROFILES = {
     "dsm_arnitel2045_175_cartesio_0.25_mm": "dsm_arnitel2045_175_cartesio_0.25mm_thermoplastic_extruder",
@@ -57,12 +58,11 @@ _RENAMED_MATERIAL_PROFILES = {
     "ultimaker_pva_cartesio_0.25_mm": "ultimaker_pva_cartesio_0.25mm_thermoplastic_extruder",
     "ultimaker_pva_cartesio_0.4_mm": "ultimaker_pva_cartesio_0.4mm_thermoplastic_extruder",
     "ultimaker_pva_cartesio_0.8_mm": "ultimaker_pva_cartesio_0.8mm_thermoplastic_extruder"
-}
+} # type: Dict[str, str]
 
 ##  Upgrades configurations from the state they were in at version 3.4 to the
 #   state they should be in at version 3.5.
 class VersionUpgrade34to35(VersionUpgrade):
-
     ##  Gets the version number from a CFG file in Uranium's 3.3 format.
     #
     #   Since the format may change, this is implemented for the 3.3 format only
@@ -74,7 +74,7 @@ class VersionUpgrade34to35(VersionUpgrade):
     #   \raises ValueError The format of the version number in the file is
     #   incorrect.
     #   \raises KeyError The format of the file is incorrect.
-    def getCfgVersion(self, serialised):
+    def getCfgVersion(self, serialised: str) -> int:
         parser = configparser.ConfigParser(interpolation = None)
         parser.read_string(serialised)
         format_version = int(parser.get("general", "version")) #Explicitly give an exception when this fails. That means that the file format is not recognised.
@@ -82,7 +82,7 @@ class VersionUpgrade34to35(VersionUpgrade):
         return format_version * 1000000 + setting_version
 
     ##  Upgrades Preferences to have the new version number.
-    def upgradePreferences(self, serialized, filename):
+    def upgradePreferences(self, serialized: str, filename: str) -> Tuple[List[str], List[str]]:
         parser = configparser.ConfigParser(interpolation = None)
         parser.read_string(serialized)
 
@@ -103,7 +103,7 @@ class VersionUpgrade34to35(VersionUpgrade):
         return [filename], [result.getvalue()]
 
     ##  Upgrades stacks to have the new version number.
-    def upgradeStack(self, serialized, filename):
+    def upgradeStack(self, serialized: str, filename: str) -> Tuple[List[str], List[str]]:
         parser = configparser.ConfigParser(interpolation = None)
         parser.read_string(serialized)
 
@@ -121,7 +121,7 @@ class VersionUpgrade34to35(VersionUpgrade):
 
     ##  Upgrades instance containers to have the new version
     #   number.
-    def upgradeInstanceContainer(self, serialized, filename):
+    def upgradeInstanceContainer(self, serialized: str, filename: str) -> Tuple[List[str], List[str]]:
         parser = configparser.ConfigParser(interpolation = None)
         parser.read_string(serialized)
 
@@ -147,7 +147,7 @@ class VersionUpgrade34to35(VersionUpgrade):
         parser.write(result)
         return [filename], [result.getvalue()]
 
-    def _resetConcentric3DInfillPattern(self, parser):
+    def _resetConcentric3DInfillPattern(self, parser: configparser.ConfigParser) -> None:
         if "values" not in parser:
             return
 
@@ -161,5 +161,4 @@ class VersionUpgrade34to35(VersionUpgrade):
             if key not in parser["values"]:
                 continue
             if parser["values"][key] == "concentric_3d":
-                del parser["values"][key]
-
+                del parser["values"][key]

plugins/VersionUpgrade/VersionUpgrade34to35/__init__.py

@@ -1,11 +1,16 @@
 # Copyright (c) 2018 Ultimaker B.V.
 # Cura is released under the terms of the LGPLv3 or higher.
 
+from typing import Any, Dict, TYPE_CHECKING
+
 from . import VersionUpgrade34to35
 
+if TYPE_CHECKING:
+    from UM.Application import Application
+
 upgrade = VersionUpgrade34to35.VersionUpgrade34to35()
 
-def getMetaData():
+def getMetaData() -> Dict[str, Any]:
     return {
         "version_upgrade": {
             # From                           To                              Upgrade function
@@ -52,5 +57,5 @@ def getMetaData():
     }
 
 
-def register(app):
+def register(app: "Application") -> Dict[str, Any]:
     return { "version_upgrade": upgrade }