1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392
|
# mode: run
# ticket: t5
# A small number of extra tests checking:
# 1) this works correctly with pure-Python-mode decorators - methodmangling_pure.py.
# 2) this works correctly with cdef classes - methodmangling_cdef.pyx
# 3) with "error_on_unknown_names" - methodmangling_unknown_names.py
class CyTest(object):
"""
>>> cy = CyTest()
>>> '_CyTest__private' in dir(cy)
True
>>> cy._CyTest__private()
8
>>> '__private' in dir(cy)
False
>>> '_CyTest__x' in dir(cy)
True
>>> '__x' in dir(cy)
False
>>> cy._CyTest__y
2
>>> '_CyTest___more_than_two' in dir(cy)
True
>>> '___more_than_two' in dir(cy)
False
>>> '___more_than_two_special___' in dir(cy)
True
"""
__x = 1
___more_than_two = 3
___more_than_two_special___ = 4
def __init__(self):
self.__y = 2
def __private(self): return 8
def get(self):
"""
>>> CyTest().get()
(1, 1, 8)
"""
return self._CyTest__x, self.__x, self.__private()
def get_inner(self):
"""
>>> CyTest().get_inner()
(1, 1, 8)
"""
def get(o):
return o._CyTest__x, o.__x, o.__private()
return get(self)
class CyTestSub(CyTest):
"""
>>> cy = CyTestSub()
>>> '_CyTestSub__private' in dir(cy)
True
>>> cy._CyTestSub__private()
9
>>> '_CyTest__private' in dir(cy)
True
>>> cy._CyTest__private()
8
>>> '__private' in dir(cy)
False
>>> '_CyTestSub__x' in dir(cy)
False
>>> '_CyTestSub__y' in dir(cy)
True
>>> '_CyTest__x' in dir(cy)
True
>>> '__x' in dir(cy)
False
"""
__y = 2
def __private(self): return 9
def get(self):
"""
>>> CyTestSub().get()
(1, 2, 2, 9)
"""
return self._CyTest__x, self._CyTestSub__y, self.__y, self.__private()
def get_inner(self):
"""
>>> CyTestSub().get_inner()
(1, 2, 2, 9)
"""
def get(o):
return o._CyTest__x, o._CyTestSub__y, o.__y, o.__private()
return get(self)
class _UnderscoreTest(object):
"""
>>> ut = _UnderscoreTest()
>>> '__x' in dir(ut)
False
>>> '_UnderscoreTest__x' in dir(ut)
True
>>> ut._UnderscoreTest__x
1
>>> ut.get()
1
>>> ut._UnderscoreTest__UnderscoreNested().ret1()
1
>>> ut._UnderscoreTest__UnderscoreNested.__name__
'__UnderscoreNested'
>>> ut._UnderscoreTest__prop
1
"""
__x = 1
def get(self):
return self.__x
class __UnderscoreNested(object):
def ret1(self):
return 1
@property
def __prop(self):
return self.__x
class C:
error = """Traceback (most recent call last):
...
TypeError:
"""
__doc__ = """
>>> instance = C()
Instance methods have their arguments mangled
>>> instance.method1(__arg=1) # doctest: +IGNORE_EXCEPTION_DETAIL
{error}
>>> instance.method1(_C__arg=1)
1
>>> instance.method2(__arg=1) # doctest: +IGNORE_EXCEPTION_DETAIL
{error}
>>> instance.method2(_C__arg=1)
1
Works when optional argument isn't passed
>>> instance.method2()
None
Where args are in the function's **kwargs dict, names aren't mangled
>>> instance.method3(__arg=1) # doctest:
1
>>> instance.method3(_C__arg=1) # doctest: +IGNORE_EXCEPTION_DETAIL
Traceback (most recent call last):
...
KeyError:
Lambda functions behave in the same way:
>>> instance.method_lambda(__arg=1) # doctest: +IGNORE_EXCEPTION_DETAIL
{error}
>>> instance.method_lambda(_C__arg=1)
1
Class methods - have their arguments mangled
>>> instance.class_meth(__arg=1) # doctest: +IGNORE_EXCEPTION_DETAIL
{error}
>>> instance.class_meth(_C__arg=1)
1
>>> C.class_meth(__arg=1) # doctest: +IGNORE_EXCEPTION_DETAIL
{error}
>>> C.class_meth(_C__arg=1)
1
Static methods - have their arguments mangled
>>> instance.static_meth(__arg=1) # doctest: +IGNORE_EXCEPTION_DETAIL
{error}
>>> instance.static_meth(_C__arg=1)
1
>>> C.static_meth(__arg=1) # doctest: +IGNORE_EXCEPTION_DETAIL
{error}
>>> C.static_meth(_C__arg=1)
1
Functions assigned to the class don't have their arguments mangled
>>> instance.class_assigned_function(__arg=1)
1
>>> instance.class_assigned_function(_C__arg=1) # doctest: +IGNORE_EXCEPTION_DETAIL
{error}
Functions assigned to an instance don't have their arguments mangled
>>> instance.instance_assigned_function = free_function2
>>> instance.instance_assigned_function(__arg=1)
1
>>> instance.instance_assigned_function(_C__arg=1) # doctest: +IGNORE_EXCEPTION_DETAIL
{error}
Locals are reported as mangled
>>> list(sorted(k for k in instance.get_locals(1).keys()))
['_C__arg', 'self']
""".format(error=error)
def method1(self, __arg):
print(__arg)
def method2(self, __arg=None):
# __arg is optional
print(__arg)
def method3(self, **kwargs):
print(kwargs['__arg'])
method_lambda = lambda self, __arg: __arg
def get_locals(self, __arg):
return locals()
@classmethod
def class_meth(cls, __arg):
print(__arg)
@staticmethod
def static_meth(__arg, dummy_arg=None):
# dummy_arg is to mask https://github.com/cython/cython/issues/3090
print(__arg)
def free_function1(x, __arg):
print(__arg)
def free_function2(__arg, dummy_arg=None):
# dummy_arg is to mask https://github.com/cython/cython/issues/3090
print(__arg)
C.class_assigned_function = free_function1
__global_arg = True
_D__arg1 = None
_D__global_arg = False # define these because otherwise Cython gives a compile-time error
# while Python gives a runtime error (which is difficult to test)
def can_find_global_arg():
"""
>>> can_find_global_arg()
True
"""
return __global_arg
def cant_find_global_arg():
"""
Gets _D_global_arg instead
>>> cant_find_global_arg()
False
"""
class D:
def f(self):
return __global_arg
return D().f()
class CMultiplyNested:
def f1(self, __arg, name=None, return_closure=False):
"""
>>> inst = CMultiplyNested()
>>> for name in [None, '__arg', '_CMultiplyNested__arg', '_D__arg']:
... try:
... print(inst.f1(1,name))
... except TypeError:
... print("TypeError") # not concerned about exact details
... # now test behaviour is the same in closures
... closure = inst.f1(1, return_closure=True)
... try:
... if name is None:
... print(closure(2))
... else:
... print(closure(**{ name: 2}))
... except TypeError:
... print("TypeError")
2
2
TypeError
TypeError
TypeError
TypeError
2
2
"""
class D:
def g(self, __arg):
return __arg
if return_closure:
return D().g
if name is not None:
return D().g(**{ name: 2 })
else:
return D().g(2)
def f2(self, __arg1):
"""
This finds the global name '_D__arg1'
It's tested in this way because without the global
Python gives a runtime error and Cython a compile error
>>> print(CMultiplyNested().f2(1))
None
"""
class D:
def g(self):
return __arg1
return D().g()
def f3(self, arg, name):
"""
>>> inst = CMultiplyNested()
>>> inst.f3(1, None)
2
>>> inst.f3(1, '__arg') # doctest: +IGNORE_EXCEPTION_DETAIL
Traceback (most recent call last):
...
TypeError:
>>> inst.f3(1, '_CMultiplyNested__arg')
2
"""
def g(__arg, dummy=1):
return __arg
if name is not None:
return g(**{ name: 2})
else:
return g(2)
def f4(self, __arg):
"""
>>> CMultiplyNested().f4(1)
1
"""
def g():
return __arg
return g()
def f5(self, __arg):
"""
Default values are found in the outer scope correctly
>>> CMultiplyNested().f5(1)
1
"""
def g(x=__arg):
return x
return g()
def f6(self, __arg1):
"""
This will find the global name _D__arg1
>>> print(CMultiplyNested().f6(1))
None
"""
class D:
def g(self, x=__arg1):
return x
return D().g()
def f7(self, __arg):
"""
Lookup works in generator expressions
>>> list(CMultiplyNested().f7(1))
[1]
"""
return (__arg for x in range(1))
class __NameWithDunder:
"""
>>> __NameWithDunder.__name__
'__NameWithDunder'
"""
pass
class Inherits(__NameWithDunder):
"""
Compile check that it can find the base class
>>> x = Inherits()
"""
pass
def regular_function(__x, dummy=None):
# as before, dummy stops Cython creating a 1 arg, non-keyword call
return __x
class CallsRegularFunction:
def call(self):
"""
>>> CallsRegularFunction().call()
1
"""
return regular_function(__x=1) # __x shouldn't be mangled as an argument elsewhere
|