From 3a72054f930a6c1d4bc1c960a292b79dc7c0e6f2 Mon Sep 17 00:00:00 2001
From: rlippmann <70883373+rlippmann@users.noreply.github.com>
Date: Tue, 11 Apr 2023 13:58:28 -0400
Subject: [PATCH] Make dataclasses in HA core slotted (#91208)

---
 homeassistant/exceptions.py                       | 8 ++++----
 homeassistant/helpers/collection.py               | 2 +-
 homeassistant/helpers/entity.py                   | 4 ++--
 homeassistant/helpers/event.py                    | 6 +++---
 homeassistant/helpers/integration_platform.py     | 2 +-
 homeassistant/helpers/intent.py                   | 2 +-
 homeassistant/helpers/issue_registry.py           | 2 +-
 homeassistant/helpers/recorder.py                 | 2 +-
 homeassistant/helpers/schema_config_entry_flow.py | 4 ++--
 homeassistant/helpers/service.py                  | 2 +-
 homeassistant/helpers/service_info/mqtt.py        | 2 +-
 homeassistant/helpers/trigger.py                  | 2 +-
 homeassistant/loader.py                           | 2 +-
 homeassistant/runner.py                           | 2 +-
 homeassistant/util/yaml/objects.py                | 2 +-
 15 files changed, 22 insertions(+), 22 deletions(-)

diff --git a/homeassistant/exceptions.py b/homeassistant/exceptions.py
index 6cc93ef4f66..bfc96eabfdf 100644
--- a/homeassistant/exceptions.py
+++ b/homeassistant/exceptions.py
@@ -32,7 +32,7 @@ class TemplateError(HomeAssistantError):
             super().__init__(f"{exception.__class__.__name__}: {exception}")
 
 
-@dataclass
+@dataclass(slots=True)
 class ConditionError(HomeAssistantError):
     """Error during condition evaluation."""
 
@@ -52,7 +52,7 @@ class ConditionError(HomeAssistantError):
         return "\n".join(list(self.output(indent=0)))
 
 
-@dataclass
+@dataclass(slots=True)
 class ConditionErrorMessage(ConditionError):
     """Condition error message."""
 
@@ -64,7 +64,7 @@ class ConditionErrorMessage(ConditionError):
         yield self._indent(indent, f"In '{self.type}' condition: {self.message}")
 
 
-@dataclass
+@dataclass(slots=True)
 class ConditionErrorIndex(ConditionError):
     """Condition error with index."""
 
@@ -87,7 +87,7 @@ class ConditionErrorIndex(ConditionError):
         yield from self.error.output(indent + 1)
 
 
-@dataclass
+@dataclass(slots=True)
 class ConditionErrorContainer(ConditionError):
     """Condition error with subconditions."""
 
diff --git a/homeassistant/helpers/collection.py b/homeassistant/helpers/collection.py
index 4d5dc4012ee..29151221a89 100644
--- a/homeassistant/helpers/collection.py
+++ b/homeassistant/helpers/collection.py
@@ -35,7 +35,7 @@ CHANGE_REMOVED = "removed"
 _T = TypeVar("_T")
 
 
-@dataclass
+@dataclass(slots=True)
 class CollectionChangeSet:
     """Class to represent a change set.
 
diff --git a/homeassistant/helpers/entity.py b/homeassistant/helpers/entity.py
index 8352c1e4463..e5ef3bd4574 100644
--- a/homeassistant/helpers/entity.py
+++ b/homeassistant/helpers/entity.py
@@ -205,7 +205,7 @@ class EntityPlatformState(Enum):
     REMOVED = auto()
 
 
-@dataclass
+@dataclass(slots=True)
 class EntityDescription:
     """A class that describes Home Assistant entities."""
 
@@ -981,7 +981,7 @@ class Entity(ABC):
         return report_issue
 
 
-@dataclass
+@dataclass(slots=True)
 class ToggleEntityDescription(EntityDescription):
     """A class that describes toggle entities."""
 
diff --git a/homeassistant/helpers/event.py b/homeassistant/helpers/event.py
index 44a9cb087e3..27258d262ba 100644
--- a/homeassistant/helpers/event.py
+++ b/homeassistant/helpers/event.py
@@ -66,7 +66,7 @@ RANDOM_MICROSECOND_MAX = 500000
 _P = ParamSpec("_P")
 
 
-@dataclass
+@dataclass(slots=True)
 class TrackStates:
     """Class for keeping track of states being tracked.
 
@@ -80,7 +80,7 @@ class TrackStates:
     domains: set[str]
 
 
-@dataclass
+@dataclass(slots=True)
 class TrackTemplate:
     """Class for keeping track of a template with variables.
 
@@ -94,7 +94,7 @@ class TrackTemplate:
     rate_limit: timedelta | None = None
 
 
-@dataclass
+@dataclass(slots=True)
 class TrackTemplateResult:
     """Class for result of template tracking.
 
diff --git a/homeassistant/helpers/integration_platform.py b/homeassistant/helpers/integration_platform.py
index ef05dae518b..ddaede44962 100644
--- a/homeassistant/helpers/integration_platform.py
+++ b/homeassistant/helpers/integration_platform.py
@@ -16,7 +16,7 @@ _LOGGER = logging.getLogger(__name__)
 DATA_INTEGRATION_PLATFORMS = "integration_platforms"
 
 
-@dataclass(frozen=True)
+@dataclass(slots=True, frozen=True)
 class IntegrationPlatform:
     """An integration platform."""
 
diff --git a/homeassistant/helpers/intent.py b/homeassistant/helpers/intent.py
index 4e7dcc5a5a1..7a4ca862ee2 100644
--- a/homeassistant/helpers/intent.py
+++ b/homeassistant/helpers/intent.py
@@ -568,7 +568,7 @@ class IntentResponseTargetType(str, Enum):
     CUSTOM = "custom"
 
 
-@dataclass
+@dataclass(slots=True)
 class IntentResponseTarget:
     """Target of the intent response."""
 
diff --git a/homeassistant/helpers/issue_registry.py b/homeassistant/helpers/issue_registry.py
index 345ec099d3f..afe2d98ed0b 100644
--- a/homeassistant/helpers/issue_registry.py
+++ b/homeassistant/helpers/issue_registry.py
@@ -32,7 +32,7 @@ class IssueSeverity(StrEnum):
     WARNING = "warning"
 
 
-@dataclasses.dataclass(frozen=True)
+@dataclasses.dataclass(slots=True, frozen=True)
 class IssueEntry:
     """Issue Registry Entry."""
 
diff --git a/homeassistant/helpers/recorder.py b/homeassistant/helpers/recorder.py
index 5545aa09f01..74ebbe5c67a 100644
--- a/homeassistant/helpers/recorder.py
+++ b/homeassistant/helpers/recorder.py
@@ -9,7 +9,7 @@ from homeassistant.core import HomeAssistant, callback
 DOMAIN = "recorder"
 
 
-@dataclass
+@dataclass(slots=True)
 class RecorderData:
     """Recorder data stored in hass.data."""
 
diff --git a/homeassistant/helpers/schema_config_entry_flow.py b/homeassistant/helpers/schema_config_entry_flow.py
index 5101e5c69a7..653594f2808 100644
--- a/homeassistant/helpers/schema_config_entry_flow.py
+++ b/homeassistant/helpers/schema_config_entry_flow.py
@@ -27,7 +27,7 @@ class SchemaFlowStep:
     """Define a config or options flow step."""
 
 
-@dataclass
+@dataclass(slots=True)
 class SchemaFlowFormStep(SchemaFlowStep):
     """Define a config or options flow form step."""
 
@@ -79,7 +79,7 @@ class SchemaFlowFormStep(SchemaFlowStep):
     """
 
 
-@dataclass
+@dataclass(slots=True)
 class SchemaFlowMenuStep(SchemaFlowStep):
     """Define a config or options flow menu step."""
 
diff --git a/homeassistant/helpers/service.py b/homeassistant/helpers/service.py
index 33c677454bc..14cf6a85a24 100644
--- a/homeassistant/helpers/service.py
+++ b/homeassistant/helpers/service.py
@@ -199,7 +199,7 @@ class ServiceTargetSelector:
         return bool(self.entity_ids or self.device_ids or self.area_ids)
 
 
-@dataclasses.dataclass
+@dataclasses.dataclass(slots=True)
 class SelectedEntities:
     """Class to hold the selected entities."""
 
diff --git a/homeassistant/helpers/service_info/mqtt.py b/homeassistant/helpers/service_info/mqtt.py
index 3626f9b5758..906072a2d4b 100644
--- a/homeassistant/helpers/service_info/mqtt.py
+++ b/homeassistant/helpers/service_info/mqtt.py
@@ -7,7 +7,7 @@ from homeassistant.data_entry_flow import BaseServiceInfo
 ReceivePayloadType = str | bytes
 
 
-@dataclass
+@dataclass(slots=True)
 class MqttServiceInfo(BaseServiceInfo):
     """Prepared info from mqtt entries."""
 
diff --git a/homeassistant/helpers/trigger.py b/homeassistant/helpers/trigger.py
index e2963b15ab4..40e1860b409 100644
--- a/homeassistant/helpers/trigger.py
+++ b/homeassistant/helpers/trigger.py
@@ -95,7 +95,7 @@ class TriggerInfo(TypedDict):
     trigger_data: TriggerData
 
 
-@dataclass
+@dataclass(slots=True)
 class PluggableActionsEntry:
     """Holder to keep track of all plugs and actions for a given trigger."""
 
diff --git a/homeassistant/loader.py b/homeassistant/loader.py
index 11f551b37eb..963ddcf48fc 100644
--- a/homeassistant/loader.py
+++ b/homeassistant/loader.py
@@ -123,7 +123,7 @@ class USBMatcher(USBMatcherRequired, USBMatcherOptional):
     """Matcher for the bluetooth integration."""
 
 
-@dataclass
+@dataclass(slots=True)
 class HomeKitDiscoveredIntegration:
     """HomeKit model."""
 
diff --git a/homeassistant/runner.py b/homeassistant/runner.py
index e5a87a4b092..9a86bed7594 100644
--- a/homeassistant/runner.py
+++ b/homeassistant/runner.py
@@ -34,7 +34,7 @@ ALPINE_RELEASE_FILE = "/etc/alpine-release"
 _LOGGER = logging.getLogger(__name__)
 
 
-@dataclasses.dataclass
+@dataclasses.dataclass(slots=True)
 class RuntimeConfig:
     """Class to hold the information for running Home Assistant."""
 
diff --git a/homeassistant/util/yaml/objects.py b/homeassistant/util/yaml/objects.py
index e7b262ad496..b2320a74d2c 100644
--- a/homeassistant/util/yaml/objects.py
+++ b/homeassistant/util/yaml/objects.py
@@ -18,7 +18,7 @@ class NodeDictClass(dict):
     """Wrapper class to be able to add attributes on a dict."""
 
 
-@dataclass(frozen=True)
+@dataclass(slots=True, frozen=True)
 class Input:
     """Input that should be substituted."""