[Cython] non-virtual methods

[Vitja Makarov]

2011/8/24 Stefan Behnel <stefan_ml at behnel.de>:
> Vitja Makarov, 24.08.2011 21:17:
>>
>> 2011/8/24 Stefan Behnel:
>>>
>>> Vitja Makarov, 24.08.2011 21:00:
>>>>
>>>> Recently I used cython in my project and I came with idea that
>>>> sometimes virtual methods are overkill.
>>>>
>>>> What's about adding non-virtual decorator for c[p]def methods?
>>>>
>>>> cdef class Foo:
>>>>      @cython.nonvirtual
>>>>      cpdef int is_active(self):
>>>>              return clib.obj_is_active(self._cobj)
>>>
>>> How does that differ from the "final" decorator?
>>>
>>
>> I tried final classes:
>> 1. Final decorator doesn't work at pxd level (compiler crash)
>
> Sounds like a bug.
>
>
>> 2. In this example foo call is done through virtual table
>>
>> cimport cython
>>
>> @cython.final
>> cdef class Foo:
>>     cdef foo(self):
>>         print 'haha'
>>
>> def test():
>>     cdef Foo a = Foo()
>>     a.foo()
>>
>>   __pyx_t_1 = ((struct __pyx_vtabstruct_3yyy_Foo
>> *)__pyx_v_a->__pyx_vtab)->foo(__pyx_v_a); if (unlikely(!__pyx_t_1))
>> {__pyx_filename = __pyx_f[0]; __pyx_lineno = 12; __pyx_clineno =
>> __LINE__; goto __pyx_L1_error;}
>
> Right, this is not implemented yet. Feel free to do so. Also see
>
> http://trac.cython.org/cython_trac/ticket/474
>
>
>> 3. I can't use final decorator for methods (error reported)
>
> http://trac.cython.org/cython_trac/ticket/586
>

What is the prefered syntax keyword inline or final decorator?


-- 
vitja.