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This repository was archived by the owner on Aug 7, 2023. It is now read-only.
/SculptingPublic archive

Commita8e55e3

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Merge pull request#1 from TheArtur128/development for 1.0.1 version
Code for 1.0.1 version
2 parents5be3202 +4a08c97 commita8e55e3

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2 files changed

+126
-59
lines changed

2 files changed

+126
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‎sculpting/core.py‎

Lines changed: 111 additions & 57 deletions
Original file line numberDiff line numberDiff line change
@@ -1,15 +1,18 @@
1+
fromabcimportABC,abstractmethod
12
fromdataclassesimportdataclass
2-
fromtypingimportFinal,Tuple,Iterable,Any,Callable,TypeVar,Generic
3+
fromtypingimportFinal,Tuple,Iterable,Any,Callable,TypeVar,Generic,Optional,Union
34

4-
frompyhandlingimportreturnly,by,documenting_by,mergely,take,close,post_partial,event_as,raise_,then
5+
frompyannotatingimportAnnotationTemplate,input_annotation
6+
frompyhandlingimportreturnly,by,documenting_by,mergely,take,close,post_partial,event_as,raise_,then,to,next_action_decorator_of
57
frompyhandling.annotationsimportdirty,reformer_of,handler
68

7-
fromsculpting.annotationsimportattribute_getter_of,attribute_setter_of,attribute_getter,attribute_setter
9+
fromsculpting.annotationsimportattribute_getter_of,attribute_setter_of,attribute_getter
810
fromsculpting.toolsimportsetting_of_attr
911

1012

1113
__all__= (
1214
"Sculpture",
15+
"material_of",
1316
"AttributeMap",
1417
"attribute_map_for",
1518
"read_only_attribute_map_as",
@@ -133,82 +136,133 @@ def changing_attribute_map_for(attribute_name: str, changer: reformer_of[Any]) -
133136
)
134137

135138

136-
OriginalT=TypeVar("OriginalT")
139+
_attribute_resource_for= (AnnotationTemplate|to|Union)([
140+
str,
141+
AnnotationTemplate(AttributeMap, [input_annotation]),
142+
AnnotationTemplate(attribute_getter_of, [input_annotation])
143+
])
137144

138145

139-
@_method_proxies_to_attribute("__original",set(_MAGIC_METHODS_NAMES)- {"__repr__","__str__"})
140-
classSculpture(Generic[OriginalT]):
146+
def_attribute_map_from(
147+
attribute_resource:_attribute_resource_for[AttributeOwnerT]
148+
)->AttributeMap[AttributeOwnerT]:
149+
"""
150+
Function to cast an unstructured attribute resource into a map of that
151+
attribute.
141152
"""
142-
Virtual attribute mapping class for a real object.
143153

144-
Virtual attribute names are given keyword arguments as keys.
145-
Values can be either the name of a real attribute of the original object, an
146-
AttributeMap, or a function to get the value of this attribute from the
147-
original object (in which case the attribute cannot be changed).
154+
ifisinstance(attribute_resource,AttributeMap):
155+
returnattribute_resource
156+
elifcallable(attribute_resource):
157+
returnread_only_attribute_map_as(attribute_resource)
158+
else:
159+
returnattribute_map_for(attribute_resource)
160+
161+
162+
class_DynamicAttributeKepper(Generic[AttributeOwnerT],ABC):
163+
"""
164+
Class for managing attributes by delegating these responsibilities to
165+
functions.
148166
"""
149167

150168
def__init__(
151169
self,
152-
original:OriginalT,
153-
**virtual_attribute_resource_by_virtual_attribute_name:str|AttributeMap[OriginalT]|attribute_getter_of[OriginalT]
170+
*,
171+
_default_attribute_resource_factory:Optional[Callable[[str],_attribute_resource_for[AttributeOwnerT]]]=None,
172+
**attribute_resource_by_attribute_name:_attribute_resource_for[AttributeOwnerT],
154173
):
155-
self.__original=original
156-
self.__attribute_map_by_virtual_attribute_name=_dict_value_map(
157-
self.__convert_virtual_attribute_resource_to_attribute_map,
158-
virtual_attribute_resource_by_virtual_attribute_name
174+
self._attribute_map_by_attribute_name=_dict_value_map(
175+
_attribute_map_from,
176+
attribute_resource_by_attribute_name
159177
)
160178

161-
def__repr__(self)->str:
162-
returnf"Sculpture from{self.__original}"
179+
self._default_attribute_map_for= (
180+
_default_attribute_resource_factory|then>>_attribute_map_from
181+
if_default_attribute_resource_factoryisnotNone
182+
else"Attribute\"{}\" is not allowed in {{}}".format|then>>mergely(
183+
take(AttributeMap),
184+
(getattr|by|"format")|then>>next_action_decorator_of(AttributeError|then>>raise_),
185+
close(lambdatemplate,obj,_:raise_(AttributeError(template.format(obj.__repr__()))))
186+
)
187+
)
163188

164189
def__getattr__(self,attribute_name:str)->Any:
165-
ifattribute_name[:1]=='_':
166-
returnobject.__getattribute__(self,attribute_name)
167-
168-
self.__validate_availability_for(attribute_name)
169-
170-
returnself.__attribute_map_by_virtual_attribute_name[attribute_name].getter(
171-
self.__original
190+
return (
191+
object.__getattribute__(self,attribute_name)
192+
ifattribute_name[:1]=='_'
193+
elseself._attribute_value_for(
194+
attribute_name,
195+
self.__attribute_map_for(attribute_name)
196+
)
172197
)
173198

174199
def__setattr__(self,attribute_name:str,attribute_value:Any)->Any:
175-
ifattribute_name[:1]=='_':
200+
return (
176201
super().__setattr__(attribute_name,attribute_value)
177-
return
202+
ifattribute_name[:1]=='_'
203+
elseself._set_attribute_value_for(
204+
attribute_name,
205+
attribute_value,
206+
self.__attribute_map_for(attribute_name)
207+
)
208+
)
209+
210+
@abstractmethod
211+
def_attribute_value_for(self,attribute_name:str,attribute_map:AttributeMap[AttributeOwnerT])->Any:
212+
"""Method for getting the value for an attribute by its map."""
178213

179-
self.__validate_availability_for(attribute_name)
214+
@abstractmethod
215+
def_set_attribute_value_for(self,attribute_name:str,attribute_value:Any,attribute_map:AttributeMap[AttributeOwnerT])->Any:
216+
"""Method for setting a value for an attribute by its map."""
180217

181-
returnself.__attribute_map_by_virtual_attribute_name[attribute_name].setter(
182-
self.__original,
183-
attribute_value
218+
def__attribute_map_for(self,attribute_name:str)->AttributeMap[AttributeOwnerT]:
219+
return (
220+
self._attribute_map_by_attribute_name[attribute_name]
221+
ifattribute_nameinself._attribute_map_by_attribute_name.keys()
222+
elseself._default_attribute_map_for(attribute_name)
184223
)
185224

186-
def__validate_availability_for(self,attribute_name:str)->None:
187-
"""
188-
Method of validation and possible subsequent error about the absence
189-
of such a virtual attribute.
190-
"""
191225

192-
ifattribute_namenotinself.__attribute_map_by_virtual_attribute_name.keys():
193-
raiseAttributeError(
194-
f"Attribute\"{attribute_name}\" is not allowed in{self.__repr__()}"
195-
)
226+
OriginalT=TypeVar("OriginalT")
196227

197-
@staticmethod
198-
def__convert_virtual_attribute_resource_to_attribute_map(
199-
virtual_attribute_resource:str|AttributeMap[OriginalT]|attribute_getter_of[OriginalT]
200-
)->AttributeMap[OriginalT]:
201-
"""
202-
Function to cast an unstructured virtual attribute resource into a map
203-
of that virtual attribute.
204228

205-
Implements casting according to the rules defined in the Sculpture
206-
documentation.
207-
"""
229+
@_method_proxies_to_attribute("__original",set(_MAGIC_METHODS_NAMES)- {"__repr__","__str__"})
230+
classSculpture(_DynamicAttributeKepper,Generic[OriginalT]):
231+
"""
232+
Virtual attribute mapping class for a real object.
233+
234+
Virtual attribute names are given keyword arguments as keys.
235+
Values can be either the name of a real attribute of the original object, an
236+
AttributeMap, or a function to get the value of this attribute from the
237+
original object (in which case the attribute cannot be changed).
238+
"""
239+
240+
def__init__(
241+
self,
242+
original:OriginalT,
243+
*,
244+
_default_attribute_resource_factory:Optional[Callable[[str],_attribute_resource_for[AttributeOwnerT]]]=None,
245+
**attribute_resource_by_attribute_name:_attribute_resource_for[OriginalT],
246+
):
247+
super().__init__(
248+
_default_attribute_resource_factory=_default_attribute_resource_factory,
249+
**attribute_resource_by_attribute_name
250+
)
208251

209-
ifisinstance(virtual_attribute_resource,AttributeMap):
210-
returnvirtual_attribute_resource
211-
elifcallable(virtual_attribute_resource):
212-
returnread_only_attribute_map_as(virtual_attribute_resource)
213-
else:
214-
returnattribute_map_for(virtual_attribute_resource)
252+
self.__original=original
253+
254+
def__repr__(self)->str:
255+
returnf"Sculpture from{self.__original}"
256+
257+
def_attribute_value_for(self,attribute_name:str,attribute_map:AttributeMap[OriginalT])->Any:
258+
returnattribute_map.getter(self.__original)
259+
260+
def_set_attribute_value_for(self,attribute_name:str,attribute_value:Any,attribute_map:AttributeMap[OriginalT])->Any:
261+
returnattribute_map.setter(self.__original,attribute_value)
262+
263+
264+
material_of:Callable[[Sculpture[OriginalT]],OriginalT]=documenting_by(
265+
"""Function to get the object on which the input sculpture is based."""
266+
)(
267+
getattr|by|"_Sculpture__original"
268+
)

‎tests.py‎

Lines changed: 15 additions & 2 deletions
Original file line numberDiff line numberDiff line change
@@ -1,6 +1,6 @@
11
fromtypingimportAny,Type
22

3-
frompyhandlingimporttimes,by,then,operation_by,execute_operation,to,ArgumentPack
3+
frompyhandlingimporttimes,by,then,operation_by,execute_operation,to,ArgumentPack,event_as,raise_
44
frompytestimportmark,raises
55

66
fromsculpting.annotationsimportattribute_getter,attribute_setter
@@ -134,6 +134,14 @@ def test_attribute_setter(
134134
"_",
135135
AttributeError
136136
),
137+
(
138+
(Sculpture|to|AttributeKeeper())(
139+
_default_attribute_resource_factory=TypeError|then>> (event_as|to|raise_)
140+
),
141+
setting_of_attr("non_existent_attribute"),
142+
"_",
143+
TypeError
144+
)
137145
]
138146
)
139147
deftest_attribute_setter_error_raising(
@@ -161,4 +169,9 @@ def test_sculpture_attribute_mapping(
161169

162170
setattr(sculpture,virtual_attribute_name,new_attribute_value)
163171

164-
assertgetattr(sculpture,virtual_attribute_name)==getattr(mapped,original_attribute_name)
172+
assertgetattr(sculpture,virtual_attribute_name)==getattr(mapped,original_attribute_name)
173+
174+
175+
@mark.parametrize("obj", [(AttributeKeeper(value=42),42,None)])
176+
deftest_original_from(obj:object):
177+
assertmaterial_of(Sculpture(obj))isobj

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