saferef::BoundNonDescriptorMethodWeakref Class Reference

Inheritance diagram for saferef::BoundNonDescriptorMethodWeakref:

Collaboration diagram for saferef::BoundNonDescriptorMethodWeakref:

List of all members.

Public Member Functions
def	__call__
def	__init__

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Detailed Description

A specialized BoundMethodWeakref, for platforms where instance methods
are not descriptors.

It assumes that the function name and the target attribute name are the
same, instead of assuming that the function is a descriptor. This approach
is equally fast, but not 100% reliable because functions can be stored on an
attribute named differenty than the function's name such as in:

class A: pass
def foo(self): return "foo"
A.bar = foo

But this shouldn't be a common use case. So, on platforms where methods
aren't descriptors (such as Jython) this implementation has the advantage
of working in the most cases.

Definition at line 253 of file saferef.py.

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Constructor & Destructor Documentation

def saferef::BoundNonDescriptorMethodWeakref::__init__	(		self,
			target,
			onDelete = None
	)

Return a weak-reference-like instance for a bound method

target -- the instance-method target for the weak
    reference, must have im_self and im_func attributes
    and be reconstructable via:
target.im_func.__get__( target.im_self )
    which is true of built-in instance methods.
onDelete -- optional callback which will be called
    when this weak reference ceases to be valid
    (i.e. either the object or the function is garbage
    collected).  Should take a single argument,
    which will be passed a pointer to this object.

Reimplemented from saferef::BoundMethodWeakref.

Definition at line 270 of file saferef.py.

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Member Function Documentation

def saferef::BoundNonDescriptorMethodWeakref::__call__

(

self

)

Return a strong reference to the bound method

If the target cannot be retrieved, then will
return None, otherwise returns a bound instance
method for our object and function.

Note:
    You may call this method any number of times,
    as it does not invalidate the reference.

Reimplemented from saferef::BoundMethodWeakref.

Definition at line 289 of file saferef.py.

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The documentation for this class was generated from the following file:

• Base/Python/saferef.py