# mode: run

# __getattribute__ and __getattr__ special methods and subclasses.

cdef class boring:

    cdef readonly int boring_member

    cdef readonly int getattr_called

    cdef int getattribute_called

    def __init__(self):

        self.boring_member = 10

cdef class getattr_boring(boring):

    """

    getattr does not override members.

    >>> a = getattr_boring()

    >>> a.boring_member

    10

    >>> a.getattr_called

    0

    >>> print(a.resolved_by)

    getattr_boring

    >>> a.getattr_called

    1

    >>> a.no_such_member

    Traceback (most recent call last):

    AttributeError

    >>> a.getattr_called

    2

    """

    def __getattr__(self,n):

        self.getattr_called += 1

        if n == 'resolved_by':

            return 'getattr_boring'

        elif n == 'getattr_boring':

            return True

        else:

            raise AttributeError

# currently fails, see #1793

#class getattr_boring_py(getattr_boring):

#    __doc__ = getattr_boring.__doc__.replace(

#        'getattr_boring()', 'getattr_boring_py()')

cdef class getattribute_boring(boring):

    """

    getattribute overrides members.

    >>> a = getattribute_boring()

    >>> a.getattribute_called

    1

    >>> a.boring_member

    Traceback (most recent call last):

    AttributeError

    >>> a.getattribute_called

    3

    >>> print(a.resolved_by)

    getattribute_boring

    >>> a.getattribute_called

    5

    >>> a.no_such_member

    Traceback (most recent call last):

    AttributeError

    >>> a.getattribute_called

    7

    """

    def __getattribute__(self,n):

        self.getattribute_called += 1

        if n == 'resolved_by':

            return 'getattribute_boring'

        elif n == 'getattribute_boring':

            return True

        elif n == 'getattribute_called':

            return self.getattribute_called

        else:

            raise AttributeError

class getattribute_boring_py(getattribute_boring):

    __doc__ = getattribute_boring.__doc__.replace(

        'getattribute_boring()', 'getattribute_boring_py()')

cdef class _getattr:

    cdef readonly int getattr_called

    def __getattr__(self,n):

        self.getattr_called += 1

        if n == 'resolved_by':

            return '_getattr'

        elif n == '_getattr':

            return True

        elif n == 'getattr_called':

            # must only get here if __getattribute__ is overwritten

            assert 'getattribute' in type(self).__name__

            return self.getattr_called

        else:

            raise AttributeError

class getattr_py(_getattr):

    """

    getattr is inherited.

    >>> a = getattr_py()

    >>> a.getattr_called

    0

    >>> print(a.resolved_by)

    _getattr

    >>> a.getattr_called

    1

    >>> print(a._getattr)

    True

    >>> a.getattr_called

    2

    >>> a.no_such_member

    Traceback (most recent call last):

    AttributeError

    # currently fails, see #1793

    #>>> a.getattr_called

    #3

    """

cdef class _getattribute:

    cdef int getattribute_called

    def __getattribute__(self,n):

        self.getattribute_called += 1

        if n == 'resolved_by':

            return '_getattribute'

        elif n == '_getattribute':

            return True

        elif n == 'getattribute_called':

            return self.getattribute_called

        else:

            raise AttributeError

class getattribute_py(_getattribute):

    """

    getattribute is inherited.

    >>> a = getattribute_py()

    >>> a.getattribute_called

    1

    >>> print(a.resolved_by)

    _getattribute

    >>> a.getattribute_called

    3

    >>> print(a._getattribute)

    True

    >>> a.getattribute_called

    5

    >>> a.no_such_member

    Traceback (most recent call last):

    AttributeError

    >>> a.getattribute_called

    7

    """

cdef class boring_getattribute(_getattribute):

    cdef readonly int boring_getattribute_member

cdef class boring_boring_getattribute(boring_getattribute):

    """

    getattribute is inherited.

    >>> a = boring_boring_getattribute()

    >>> a.getattribute_called

    1

    >>> a.boring_getattribute_member

    Traceback (most recent call last):

    AttributeError

    >>> a.getattribute_called

    3

    >>> a.boring_boring_getattribute_member

    Traceback (most recent call last):

    AttributeError

    >>> a.getattribute_called

    5

    >>> print(a.resolved_by)

    _getattribute

    >>> a.getattribute_called

    7

    >>> a.no_such_member

    Traceback (most recent call last):

    AttributeError

    >>> a.getattribute_called

    9

    """

    cdef readonly int boring_boring_getattribute_member

class boring_boring_getattribute_py(boring_boring_getattribute):

    __doc__ = boring_boring_getattribute.__doc__.replace(

        'boring_boring_getattribute()', 'boring_boring_getattribute_py()')

cdef class boring_getattr(_getattr):

    cdef readonly int boring_getattr_member

cdef class boring_boring_getattr(boring_getattr):

    cdef readonly int boring_boring_getattr_member

cdef class getattribute_boring_boring_getattr(boring_boring_getattr):

    """

    __getattribute__ is always tried first, then __getattr__, regardless of where

    in the inheritance hierarchy they came from.

    >>> a = getattribute_boring_boring_getattr()

    >>> (a.getattr_called, a.getattribute_called)

    (1, 2)

    >>> print(a.resolved_by)

    getattribute_boring_boring_getattr

    >>> (a.getattr_called, a.getattribute_called)

    (2, 5)

    >>> a.getattribute_boring_boring_getattr

    True

    >>> (a.getattr_called, a.getattribute_called)

    (3, 8)

    >>> a._getattr

    True

    >>> (a.getattr_called, a.getattribute_called)

    (5, 11)

    >>> a.no_such_member

    Traceback (most recent call last):

    AttributeError

    >>> (a.getattr_called, a.getattribute_called)

    (7, 14)

    """

    cdef int getattribute_called

    def __getattribute__(self,n):

        self.getattribute_called += 1

        if n == 'resolved_by':

            return 'getattribute_boring_boring_getattr'

        elif n == 'getattribute_boring_boring_getattr':

            return True

        elif n == 'getattribute_called':

            return self.getattribute_called

        else:

            raise AttributeError

# currently fails, see #1793

#class getattribute_boring_boring_getattr_py(getattribute_boring_boring_getattr):

#    __doc__ = getattribute_boring_boring_getattr.__doc__.replace(

#        'getattribute_boring_boring_getattr()', 'getattribute_boring_boring_getattr_py()')

cdef class getattr_boring_boring_getattribute(boring_boring_getattribute):

    """

    __getattribute__ is always tried first, then __getattr__, regardless of where

    in the inheritance hierarchy they came from.

    >>> a = getattr_boring_boring_getattribute()

    >>> (a.getattr_called, a.getattribute_called)

    (1, 2)

    >>> print(a.resolved_by)

    _getattribute

    >>> (a.getattr_called, a.getattribute_called)

    (2, 5)

    >>> a.getattr_boring_boring_getattribute

    True

    >>> (a.getattr_called, a.getattribute_called)

    (4, 8)

    >>> a._getattribute

    True

    >>> (a.getattr_called, a.getattribute_called)

    (5, 11)

    >>> a.no_such_member

    Traceback (most recent call last):

    AttributeError

    >>> (a.getattr_called, a.getattribute_called)

    (7, 14)

    """

    cdef readonly int getattr_called  # note: property will not be used due to __getattribute__()

    def __getattr__(self,n):

        self.getattr_called += 1

        if n == 'resolved_by':

            return 'getattr_boring_boring_getattribute'

        elif n == 'getattr_boring_boring_getattribute':

            return True

        elif n == 'getattr_called':

            return self.getattr_called

        else:

            raise AttributeError

# currently fails, see #1793

#class getattr_boring_boring_getattribute_py(getattr_boring_boring_getattribute):

#    __doc__ = getattr_boring_boring_getattribute.__doc__.replace(

#        'getattr_boring_boring_getattribute()', 'getattr_boring_boring_getattribute_py()')