Add tests for LaserCodeRegistry, clean up.

* Store a deque rather than an iterator so it can be pickled
* Remove mangling from staticmethod (and rename now that it's no longer
  a generator)
* Rename "get" to "alloc" to make the mutation clear
* Move to its own package (the changes I'm working on make this no
  longer mission generator specific)
* Remove useless exception class. It's never caught so the unique type
  isn't needed

game/lasercodes/__init__.py

@@ -0,0 +1 @@
+from .lasercoderegistry import LaserCodeRegistry

game/lasercodes/lasercoderegistry.py

@@ -1,30 +1,21 @@
 from collections import deque
-from typing import Iterator
-
-
-class OutOfLaserCodesError(RuntimeError):
-    def __init__(self) -> None:
-        super().__init__(
-            f"All JTAC laser codes have been allocated.  No available codes."
-        )
 
 
 class LaserCodeRegistry:
     def __init__(self) -> None:
         self.allocated_codes: set[int] = set()
-        self.allocator: Iterator[int] = LaserCodeRegistry.__laser_code_generator()
+        self.available_codes = LaserCodeRegistry._all_valid_laser_codes()
 
-    def get_next_laser_code(self) -> int:
+    def alloc_laser_code(self) -> int:
         try:
-            while (code := next(self.allocator)) in self.allocated_codes:
-                pass
+            code = self.available_codes.popleft()
             self.allocated_codes.add(code)
             return code
-        except StopIteration:
-            raise OutOfLaserCodesError
+        except IndexError:
+            raise RuntimeError("All laser codes have been allocated")
 
     @staticmethod
-    def __laser_code_generator() -> Iterator[int]:
+    def _all_valid_laser_codes() -> deque[int]:
         # Valid laser codes are as follows
         # First digit is always 1
         # Second digit is 5-7
@@ -34,4 +25,4 @@ class LaserCodeRegistry:
 
         # We start with the default of 1688 and wrap around when we reach the end
         q.rotate(-q.index(1688))
-        return iter(q)
+        return q

game/missiongenerator/aircraft/aircraftgenerator.py

@@ -21,7 +21,7 @@ from game.ato.flightstate import Completed, WaitingForStart
 from game.ato.flighttype import FlightType
 from game.ato.package import Package
 from game.ato.starttype import StartType
-from game.missiongenerator.lasercoderegistry import LaserCodeRegistry
+from game.lasercodes import LaserCodeRegistry
 from game.missiongenerator.missiondata import MissionData
 from game.radio.radios import RadioRegistry
 from game.radio.tacan import TacanRegistry

game/missiongenerator/aircraft/flightgroupconfigurator.py

@@ -16,7 +16,7 @@ from dcs.unitgroup import FlyingGroup
 from game.ato import Flight, FlightType
 from game.callsigns import callsign_for_support_unit
 from game.data.weapons import Pylon, WeaponType as WeaponTypeEnum
-from game.missiongenerator.lasercoderegistry import LaserCodeRegistry
+from game.lasercodes import LaserCodeRegistry
 from game.missiongenerator.logisticsgenerator import LogisticsGenerator
 from game.missiongenerator.missiondata import MissionData, AwacsInfo, TankerInfo
 from game.radio.radios import RadioFrequency, RadioRegistry
@@ -148,7 +148,7 @@ class FlightGroupConfigurator:
     ) -> None:
         self.set_skill(unit, member)
         if member.loadout.has_weapon_of_type(WeaponTypeEnum.TGP) and member.is_player:
-            laser_codes.append(self.laser_code_registry.get_next_laser_code())
+            laser_codes.append(self.laser_code_registry.alloc_laser_code())
         else:
             laser_codes.append(None)
         settings = self.flight.coalition.game.settings

game/missiongenerator/flotgenerator.py

@@ -37,6 +37,7 @@ from game.ground_forces.ai_ground_planner import (
     DISTANCE_FROM_FRONTLINE,
 )
 from game.ground_forces.combat_stance import CombatStance
+from game.lasercodes import LaserCodeRegistry
 from game.naming import namegen
 from game.radio.radios import RadioRegistry
 from game.theater.controlpoint import ControlPoint
@@ -44,7 +45,6 @@ from game.unitmap import UnitMap
 from game.utils import Heading
 from .frontlineconflictdescription import FrontLineConflictDescription
 from .groundforcepainter import GroundForcePainter
-from .lasercoderegistry import LaserCodeRegistry
 from .missiondata import JtacInfo, MissionData
 from ..ato import FlightType
 
@@ -152,7 +152,7 @@ class FlotGenerator:
             if self.game.settings.plugins.get("ctld.fc3LaserCode"):
                 code = 1113
             else:
-                code = self.laser_code_registry.get_next_laser_code()
+                code = self.laser_code_registry.alloc_laser_code()
 
             utype = self.game.blue.faction.jtac_unit
             if utype is None:

game/missiongenerator/missiongenerator.py

@@ -32,7 +32,7 @@ from .flotgenerator import FlotGenerator
 from .forcedoptionsgenerator import ForcedOptionsGenerator
 from .frontlineconflictdescription import FrontLineConflictDescription
 from .kneeboard import KneeboardGenerator
-from .lasercoderegistry import LaserCodeRegistry
+from game.lasercodes import LaserCodeRegistry
 from .luagenerator import LuaGenerator
 from .missiondata import MissionData
 from .tgogenerator import TgoGenerator

tests/lasercodes/test_lasercoderegistry.py

@@ -0,0 +1,15 @@
+from game.lasercodes.lasercoderegistry import LaserCodeRegistry
+
+
+def test_initial_laser_codes() -> None:
+    reg = LaserCodeRegistry()
+    assert list(reg.available_codes)[:5] == [1688, 1687, 1686, 1685, 1684]
+    assert list(reg.available_codes)[-5:] == [1715, 1714, 1713, 1712, 1711]
+    assert len(reg.available_codes) == 192
+
+
+def test_alloc_laser_code() -> None:
+    reg = LaserCodeRegistry()
+    assert reg.alloc_laser_code() == 1688
+    assert 1688 not in reg.available_codes
+    assert len(reg.available_codes) == 191