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import copy
from enum import Enum
from typing import (
Any,
Dict,
ItemsView,
Iterable,
Iterator,
KeysView,
List,
MutableMapping,
Optional,
Sequence,
Tuple,
Type,
Union,
)
from ._utils import (
_DEFAULT_MARKER_,
ValueKind,
_get_value,
_is_interpolation,
_is_missing_literal,
_is_missing_value,
_is_none,
_resolve_optional,
_valid_dict_key_annotation_type,
format_and_raise,
get_structured_config_data,
get_structured_config_init_field_names,
get_type_of,
get_value_kind,
is_container_annotation,
is_dict,
is_primitive_dict,
is_structured_config,
is_structured_config_frozen,
type_str,
)
from .base import Box, Container, ContainerMetadata, DictKeyType, Node
from .basecontainer import BaseContainer
from .errors import (
ConfigAttributeError,
ConfigKeyError,
ConfigTypeError,
InterpolationResolutionError,
KeyValidationError,
MissingMandatoryValue,
OmegaConfBaseException,
ReadonlyConfigError,
ValidationError,
)
from .nodes import EnumNode, ValueNode
class DictConfig(BaseContainer, MutableMapping[Any, Any]):
_metadata: ContainerMetadata
_content: Union[Dict[DictKeyType, Node], None, str]
def __init__(
self,
content: Union[Dict[DictKeyType, Any], "DictConfig", Any],
key: Any = None,
parent: Optional[Box] = None,
ref_type: Union[Any, Type[Any]] = Any,
key_type: Union[Any, Type[Any]] = Any,
element_type: Union[Any, Type[Any]] = Any,
is_optional: bool = True,
flags: Optional[Dict[str, bool]] = None,
) -> None:
try:
if isinstance(content, DictConfig):
if flags is None:
flags = content._metadata.flags
super().__init__(
parent=parent,
metadata=ContainerMetadata(
key=key,
optional=is_optional,
ref_type=ref_type,
object_type=dict,
key_type=key_type,
element_type=element_type,
flags=flags,
),
)
if not _valid_dict_key_annotation_type(key_type):
raise KeyValidationError(f"Unsupported key type {key_type}")
if is_structured_config(content) or is_structured_config(ref_type):
self._set_value(content, flags=flags)
if is_structured_config_frozen(content) or is_structured_config_frozen(
ref_type
):
self._set_flag("readonly", True)
else:
if isinstance(content, DictConfig):
metadata = copy.deepcopy(content._metadata)
metadata.key = key
metadata.ref_type = ref_type
metadata.optional = is_optional
metadata.element_type = element_type
metadata.key_type = key_type
self.__dict__["_metadata"] = metadata
self._set_value(content, flags=flags)
except Exception as ex:
format_and_raise(node=None, key=key, value=None, cause=ex, msg=str(ex))
def __deepcopy__(self, memo: Dict[int, Any]) -> "DictConfig":
res = DictConfig(None)
res.__dict__["_metadata"] = copy.deepcopy(self.__dict__["_metadata"], memo=memo)
res.__dict__["_flags_cache"] = copy.deepcopy(
self.__dict__["_flags_cache"], memo=memo
)
src_content = self.__dict__["_content"]
if isinstance(src_content, dict):
content_copy = {}
for k, v in src_content.items():
old_parent = v.__dict__["_parent"]
try:
v.__dict__["_parent"] = None
vc = copy.deepcopy(v, memo=memo)
vc.__dict__["_parent"] = res
content_copy[k] = vc
finally:
v.__dict__["_parent"] = old_parent
else:
# None and strings can be assigned as is
content_copy = src_content
res.__dict__["_content"] = content_copy
# parent is retained, but not copied
res.__dict__["_parent"] = self.__dict__["_parent"]
return res
def copy(self) -> "DictConfig":
return copy.copy(self)
def _is_typed(self) -> bool:
return self._metadata.object_type not in (Any, None) and not is_dict(
self._metadata.object_type
)
def _validate_get(self, key: Any, value: Any = None) -> None:
is_typed = self._is_typed()
is_struct = self._get_flag("struct") is True
if key not in self.__dict__["_content"]:
if is_typed:
# do not raise an exception if struct is explicitly set to False
if self._get_node_flag("struct") is False:
return
if is_typed or is_struct:
if is_typed:
assert self._metadata.object_type not in (dict, None)
msg = f"Key '{key}' not in '{self._metadata.object_type.__name__}'"
else:
msg = f"Key '{key}' is not in struct"
self._format_and_raise(
key=key, value=value, cause=ConfigAttributeError(msg)
)
def _validate_set(self, key: Any, value: Any) -> None:
from omegaconf import OmegaConf
vk = get_value_kind(value)
if vk == ValueKind.INTERPOLATION:
return
if _is_none(value):
self._validate_non_optional(key, value)
return
if vk == ValueKind.MANDATORY_MISSING or value is None:
return
target = self._get_node(key) if key is not None else self
target_has_ref_type = isinstance(
target, DictConfig
) and target._metadata.ref_type not in (Any, dict)
is_valid_target = target is None or not target_has_ref_type
if is_valid_target:
return
assert isinstance(target, Node)
target_type = target._metadata.ref_type
value_type = OmegaConf.get_type(value)
if is_dict(value_type) and is_dict(target_type):
return
if is_container_annotation(target_type) and not is_container_annotation(
value_type
):
raise ValidationError(
f"Cannot assign {type_str(value_type)} to {type_str(target_type)}"
)
if target_type is not None and value_type is not None:
origin = getattr(target_type, "__origin__", target_type)
if not issubclass(value_type, origin):
self._raise_invalid_value(value, value_type, target_type)
def _validate_merge(self, value: Any) -> None:
from omegaconf import OmegaConf
dest = self
src = value
self._validate_non_optional(None, src)
dest_obj_type = OmegaConf.get_type(dest)
src_obj_type = OmegaConf.get_type(src)
if dest._is_missing() and src._metadata.object_type not in (dict, None):
self._validate_set(key=None, value=_get_value(src))
if src._is_missing():
return
validation_error = (
dest_obj_type is not None
and src_obj_type is not None
and is_structured_config(dest_obj_type)
and not src._is_none()
and not is_dict(src_obj_type)
and not issubclass(src_obj_type, dest_obj_type)
)
if validation_error:
msg = (
f"Merge error: {type_str(src_obj_type)} is not a "
f"subclass of {type_str(dest_obj_type)}. value: {src}"
)
raise ValidationError(msg)
def _validate_non_optional(self, key: Optional[DictKeyType], value: Any) -> None:
if _is_none(value, resolve=True, throw_on_resolution_failure=False):
if key is not None:
child = self._get_node(key)
if child is not None:
assert isinstance(child, Node)
field_is_optional = child._is_optional()
else:
field_is_optional, _ = _resolve_optional(
self._metadata.element_type
)
else:
field_is_optional = self._is_optional()
if not field_is_optional:
self._format_and_raise(
key=key,
value=value,
cause=ValidationError("field '$FULL_KEY' is not Optional"),
)
def _raise_invalid_value(
self, value: Any, value_type: Any, target_type: Any
) -> None:
assert value_type is not None
assert target_type is not None
msg = (
f"Invalid type assigned: {type_str(value_type)} is not a "
f"subclass of {type_str(target_type)}. value: {value}"
)
raise ValidationError(msg)
def _validate_and_normalize_key(self, key: Any) -> DictKeyType:
return self._s_validate_and_normalize_key(self._metadata.key_type, key)
def _s_validate_and_normalize_key(self, key_type: Any, key: Any) -> DictKeyType:
if key_type is Any:
for t in DictKeyType.__args__: # type: ignore
if isinstance(key, t):
return key # type: ignore
raise KeyValidationError("Incompatible key type '$KEY_TYPE'")
elif key_type is bool and key in [0, 1]:
# Python treats True as 1 and False as 0 when used as dict keys
# assert hash(0) == hash(False)
# assert hash(1) == hash(True)
return bool(key)
elif key_type in (str, bytes, int, float, bool): # primitive type
if not isinstance(key, key_type):
raise KeyValidationError(
f"Key $KEY ($KEY_TYPE) is incompatible with ({key_type.__name__})"
)
return key # type: ignore
elif issubclass(key_type, Enum):
try:
return EnumNode.validate_and_convert_to_enum(key_type, key)
except ValidationError:
valid = ", ".join([x for x in key_type.__members__.keys()])
raise KeyValidationError(
f"Key '$KEY' is incompatible with the enum type '{key_type.__name__}', valid: [{valid}]"
)
else:
assert False, f"Unsupported key type {key_type}"
def __setitem__(self, key: DictKeyType, value: Any) -> None:
try:
self.__set_impl(key=key, value=value)
except AttributeError as e:
self._format_and_raise(
key=key, value=value, type_override=ConfigKeyError, cause=e
)
except Exception as e:
self._format_and_raise(key=key, value=value, cause=e)
def __set_impl(self, key: DictKeyType, value: Any) -> None:
key = self._validate_and_normalize_key(key)
self._set_item_impl(key, value)
# hide content while inspecting in debugger
def __dir__(self) -> Iterable[str]:
if self._is_missing() or self._is_none():
return []
return self.__dict__["_content"].keys() # type: ignore
def __setattr__(self, key: str, value: Any) -> None:
"""
Allow assigning attributes to DictConfig
:param key:
:param value:
:return:
"""
try:
self.__set_impl(key, value)
except Exception as e:
if isinstance(e, OmegaConfBaseException) and e._initialized:
raise e
self._format_and_raise(key=key, value=value, cause=e)
assert False
def __getattr__(self, key: str) -> Any:
"""
Allow accessing dictionary values as attributes
:param key:
:return:
"""
if key == "__name__":
raise AttributeError()
try:
return self._get_impl(
key=key, default_value=_DEFAULT_MARKER_, validate_key=False
)
except ConfigKeyError as e:
self._format_and_raise(
key=key, value=None, cause=e, type_override=ConfigAttributeError
)
except Exception as e:
self._format_and_raise(key=key, value=None, cause=e)
def __getitem__(self, key: DictKeyType) -> Any:
"""
Allow map style access
:param key:
:return:
"""
try:
return self._get_impl(key=key, default_value=_DEFAULT_MARKER_)
except AttributeError as e:
self._format_and_raise(
key=key, value=None, cause=e, type_override=ConfigKeyError
)
except Exception as e:
self._format_and_raise(key=key, value=None, cause=e)
def __delattr__(self, key: str) -> None:
"""
Allow deleting dictionary values as attributes
:param key:
:return:
"""
if self._get_flag("readonly"):
self._format_and_raise(
key=key,
value=None,
cause=ReadonlyConfigError(
"DictConfig in read-only mode does not support deletion"
),
)
try:
del self.__dict__["_content"][key]
except KeyError:
msg = "Attribute not found: '$KEY'"
self._format_and_raise(key=key, value=None, cause=ConfigAttributeError(msg))
def __delitem__(self, key: DictKeyType) -> None:
key = self._validate_and_normalize_key(key)
if self._get_flag("readonly"):
self._format_and_raise(
key=key,
value=None,
cause=ReadonlyConfigError(
"DictConfig in read-only mode does not support deletion"
),
)
if self._get_flag("struct"):
self._format_and_raise(
key=key,
value=None,
cause=ConfigTypeError(
"DictConfig in struct mode does not support deletion"
),
)
if self._is_typed() and self._get_node_flag("struct") is not False:
self._format_and_raise(
key=key,
value=None,
cause=ConfigTypeError(
f"{type_str(self._metadata.object_type)} (DictConfig) does not support deletion"
),
)
try:
del self.__dict__["_content"][key]
except KeyError:
msg = "Key not found: '$KEY'"
self._format_and_raise(key=key, value=None, cause=ConfigKeyError(msg))
def get(self, key: DictKeyType, default_value: Any = None) -> Any:
"""Return the value for `key` if `key` is in the dictionary, else
`default_value` (defaulting to `None`)."""
try:
return self._get_impl(key=key, default_value=default_value)
except KeyValidationError as e:
self._format_and_raise(key=key, value=None, cause=e)
def _get_impl(
self, key: DictKeyType, default_value: Any, validate_key: bool = True
) -> Any:
try:
node = self._get_child(
key=key, throw_on_missing_key=True, validate_key=validate_key
)
except (ConfigAttributeError, ConfigKeyError):
if default_value is not _DEFAULT_MARKER_:
return default_value
else:
raise
assert isinstance(node, Node)
return self._resolve_with_default(
key=key, value=node, default_value=default_value
)
def _get_node(
self,
key: DictKeyType,
validate_access: bool = True,
validate_key: bool = True,
throw_on_missing_value: bool = False,
throw_on_missing_key: bool = False,
) -> Optional[Node]:
try:
key = self._validate_and_normalize_key(key)
except KeyValidationError:
if validate_access and validate_key:
raise
else:
if throw_on_missing_key:
raise ConfigAttributeError
else:
return None
if validate_access:
self._validate_get(key)
value: Optional[Node] = self.__dict__["_content"].get(key)
if value is None:
if throw_on_missing_key:
raise ConfigKeyError(f"Missing key {key!s}")
elif throw_on_missing_value and value._is_missing():
raise MissingMandatoryValue("Missing mandatory value: $KEY")
return value
def pop(self, key: DictKeyType, default: Any = _DEFAULT_MARKER_) -> Any:
try:
if self._get_flag("readonly"):
raise ReadonlyConfigError("Cannot pop from read-only node")
if self._get_flag("struct"):
raise ConfigTypeError("DictConfig in struct mode does not support pop")
if self._is_typed() and self._get_node_flag("struct") is not False:
raise ConfigTypeError(
f"{type_str(self._metadata.object_type)} (DictConfig) does not support pop"
)
key = self._validate_and_normalize_key(key)
node = self._get_child(key=key, validate_access=False)
if node is not None:
assert isinstance(node, Node)
value = self._resolve_with_default(
key=key, value=node, default_value=default
)
del self[key]
return value
else:
if default is not _DEFAULT_MARKER_:
return default
else:
full = self._get_full_key(key=key)
if full != key:
raise ConfigKeyError(
f"Key not found: '{key!s}' (path: '{full}')"
)
else:
raise ConfigKeyError(f"Key not found: '{key!s}'")
except Exception as e:
self._format_and_raise(key=key, value=None, cause=e)
def keys(self) -> KeysView[DictKeyType]:
if self._is_missing() or self._is_interpolation() or self._is_none():
return {}.keys()
ret = self.__dict__["_content"].keys()
assert isinstance(ret, KeysView)
return ret
def __contains__(self, key: object) -> bool:
"""
A key is contained in a DictConfig if there is an associated value and
it is not a mandatory missing value ('???').
:param key:
:return:
"""
try:
key = self._validate_and_normalize_key(key)
except KeyValidationError:
return False
try:
node = self._get_child(key)
assert node is None or isinstance(node, Node)
except (KeyError, AttributeError):
node = None
if node is None:
return False
else:
try:
self._resolve_with_default(key=key, value=node)
return True
except InterpolationResolutionError:
# Interpolations that fail count as existing.
return True
except MissingMandatoryValue:
# Missing values count as *not* existing.
return False
def __iter__(self) -> Iterator[DictKeyType]:
return iter(self.keys())
def items(self) -> ItemsView[DictKeyType, Any]:
return dict(self.items_ex(resolve=True, keys=None)).items()
def setdefault(self, key: DictKeyType, default: Any = None) -> Any:
if key in self:
ret = self.__getitem__(key)
else:
ret = default
self.__setitem__(key, default)
return ret
def items_ex(
self, resolve: bool = True, keys: Optional[Sequence[DictKeyType]] = None
) -> List[Tuple[DictKeyType, Any]]:
items: List[Tuple[DictKeyType, Any]] = []
if self._is_none():
self._format_and_raise(
key=None,
value=None,
cause=TypeError("Cannot iterate a DictConfig object representing None"),
)
if self._is_missing():
raise MissingMandatoryValue("Cannot iterate a missing DictConfig")
for key in self.keys():
if resolve:
value = self[key]
else:
value = self.__dict__["_content"][key]
if isinstance(value, ValueNode):
value = value._value()
if keys is None or key in keys:
items.append((key, value))
return items
def __eq__(self, other: Any) -> bool:
if other is None:
return self.__dict__["_content"] is None
if is_primitive_dict(other) or is_structured_config(other):
other = DictConfig(other, flags={"allow_objects": True})
return DictConfig._dict_conf_eq(self, other)
if isinstance(other, DictConfig):
return DictConfig._dict_conf_eq(self, other)
if self._is_missing():
return _is_missing_literal(other)
return NotImplemented
def __ne__(self, other: Any) -> bool:
x = self.__eq__(other)
if x is not NotImplemented:
return not x
return NotImplemented
def __hash__(self) -> int:
return hash(str(self))
def _promote(self, type_or_prototype: Optional[Type[Any]]) -> None:
"""
Retypes a node.
This should only be used in rare circumstances, where you want to dynamically change
the runtime structured-type of a DictConfig.
It will change the type and add the additional fields based on the input class or object
"""
if type_or_prototype is None:
return
if not is_structured_config(type_or_prototype):
raise ValueError(f"Expected structured config class: {type_or_prototype}")
from omegaconf import OmegaConf
proto: DictConfig = OmegaConf.structured(type_or_prototype)
object_type = proto._metadata.object_type
# remove the type to prevent assignment validation from rejecting the promotion.
proto._metadata.object_type = None
self.merge_with(proto)
# restore the type.
self._metadata.object_type = object_type
def _set_value(self, value: Any, flags: Optional[Dict[str, bool]] = None) -> None:
try:
previous_content = self.__dict__["_content"]
self._set_value_impl(value, flags)
except Exception as e:
self.__dict__["_content"] = previous_content
raise e
def _set_value_impl(
self, value: Any, flags: Optional[Dict[str, bool]] = None
) -> None:
from omegaconf import MISSING, flag_override
if flags is None:
flags = {}
assert not isinstance(value, ValueNode)
self._validate_set(key=None, value=value)
if _is_none(value, resolve=True):
self.__dict__["_content"] = None
self._metadata.object_type = None
elif _is_interpolation(value, strict_interpolation_validation=True):
self.__dict__["_content"] = value
self._metadata.object_type = None
elif _is_missing_value(value):
self.__dict__["_content"] = MISSING
self._metadata.object_type = None
else:
self.__dict__["_content"] = {}
if is_structured_config(value):
self._metadata.object_type = None
ao = self._get_flag("allow_objects")
data = get_structured_config_data(value, allow_objects=ao)
with flag_override(self, ["struct", "readonly"], False):
for k, v in data.items():
self.__setitem__(k, v)
self._metadata.object_type = get_type_of(value)
elif isinstance(value, DictConfig):
self._metadata.flags = copy.deepcopy(flags)
with flag_override(self, ["struct", "readonly"], False):
for k, v in value.__dict__["_content"].items():
self.__setitem__(k, v)
self._metadata.object_type = value._metadata.object_type
elif isinstance(value, dict):
with flag_override(self, ["struct", "readonly"], False):
for k, v in value.items():
self.__setitem__(k, v)
self._metadata.object_type = dict
else: # pragma: no cover
msg = f"Unsupported value type: {value}"
raise ValidationError(msg)
@staticmethod
def _dict_conf_eq(d1: "DictConfig", d2: "DictConfig") -> bool:
d1_none = d1.__dict__["_content"] is None
d2_none = d2.__dict__["_content"] is None
if d1_none and d2_none:
return True
if d1_none != d2_none:
return False
assert isinstance(d1, DictConfig)
assert isinstance(d2, DictConfig)
if len(d1) != len(d2):
return False
if d1._is_missing() or d2._is_missing():
return d1._is_missing() is d2._is_missing()
for k, v in d1.items_ex(resolve=False):
if k not in d2.__dict__["_content"]:
return False
if not BaseContainer._item_eq(d1, k, d2, k):
return False
return True
def _to_object(self) -> Any:
"""
Instantiate an instance of `self._metadata.object_type`.
This requires `self` to be a structured config.
Nested subconfigs are converted by calling `OmegaConf.to_object`.
"""
from omegaconf import OmegaConf
object_type = self._metadata.object_type
assert is_structured_config(object_type)
init_field_names = set(get_structured_config_init_field_names(object_type))
init_field_items: Dict[str, Any] = {}
non_init_field_items: Dict[str, Any] = {}
for k in self.keys():
assert isinstance(k, str)
node = self._get_child(k)
assert isinstance(node, Node)
try:
node = node._dereference_node()
except InterpolationResolutionError as e:
self._format_and_raise(key=k, value=None, cause=e)
if node._is_missing():
if k not in init_field_names:
continue # MISSING is ignored for init=False fields
self._format_and_raise(
key=k,
value=None,
cause=MissingMandatoryValue(
"Structured config of type `$OBJECT_TYPE` has missing mandatory value: $KEY"
),
)
if isinstance(node, Container):
v = OmegaConf.to_object(node)
else:
v = node._value()
if k in init_field_names:
init_field_items[k] = v
else:
non_init_field_items[k] = v
try:
result = object_type(**init_field_items)
except TypeError as exc:
self._format_and_raise(
key=None,
value=None,
cause=exc,
msg="Could not create instance of `$OBJECT_TYPE`: " + str(exc),
)
for k, v in non_init_field_items.items():
setattr(result, k, v)
return result
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