1 files changed, 58 insertions, 0 deletions
diff --git a/venv/lib/python3.11/site-packages/litestar/dto/dataclass_dto.py b/venv/lib/python3.11/site-packages/litestar/dto/dataclass_dto.py
new file mode 100644
index 0000000..554b0f3
--- /dev/null
+++ b/venv/lib/python3.11/site-packages/litestar/dto/dataclass_dto.py
@@ -0,0 +1,58 @@
+from __future__ import annotations
+
+from dataclasses import MISSING, fields, replace
+from typing import TYPE_CHECKING, Generic, TypeVar
+
+from litestar.dto.base_dto import AbstractDTO
+from litestar.dto.data_structures import DTOFieldDefinition
+from litestar.dto.field import DTO_FIELD_META_KEY, DTOField
+from litestar.params import DependencyKwarg, KwargDefinition
+from litestar.types.empty import Empty
+
+if TYPE_CHECKING:
+    from typing import Collection, Generator
+
+    from litestar.types.protocols import DataclassProtocol
+    from litestar.typing import FieldDefinition
+
+
+__all__ = ("DataclassDTO", "T")
+
+T = TypeVar("T", bound="DataclassProtocol | Collection[DataclassProtocol]")
+AnyDataclass = TypeVar("AnyDataclass", bound="DataclassProtocol")
+
+
+class DataclassDTO(AbstractDTO[T], Generic[T]):
+    """Support for domain modelling with dataclasses."""
+
+    @classmethod
+    def generate_field_definitions(
+        cls, model_type: type[DataclassProtocol]
+    ) -> Generator[DTOFieldDefinition, None, None]:
+        dc_fields = {f.name: f for f in fields(model_type)}
+        for key, field_definition in cls.get_model_type_hints(model_type).items():
+            if not (dc_field := dc_fields.get(key)):
+                continue
+
+            default = dc_field.default if dc_field.default is not MISSING else Empty
+            default_factory = dc_field.default_factory if dc_field.default_factory is not MISSING else None
+            field_defintion = replace(
+                DTOFieldDefinition.from_field_definition(
+                    field_definition=field_definition,
+                    default_factory=default_factory,
+                    dto_field=dc_field.metadata.get(DTO_FIELD_META_KEY, DTOField()),
+                    model_name=model_type.__name__,
+                ),
+                name=key,
+                default=default,
+            )
+
+            yield (
+                replace(field_defintion, default=Empty, kwarg_definition=default)
+                if isinstance(default, (KwargDefinition, DependencyKwarg))
+                else field_defintion
+            )
+
+    @classmethod
+    def detect_nested_field(cls, field_definition: FieldDefinition) -> bool:
+        return hasattr(field_definition.annotation, "__dataclass_fields__")