Hi List,
sorry for the crosspost, I have also asked the question here https://
answers.launchpad.net/cython/+question/31930, but probably the list
is a better place to ask.
In the new version of Cython I am excited to report that overloading
operators seems to work just fine. This is great, because in the high
energy physics community, people think it's a good idea to abuse the
() operator for iterators to mean next (among other nonsense).
So I have a short class in C++, the code is below, and as posted,
everything works fine.
However, when I try to change "def add(self)" to "def __add__(self)"
in myTest I get complaints of the sort
File "test.py", line 37, in <module>
print test + 3
File "stdMatrix.pyx", line 67, in stdMatrix.myTest.__add__
(stdMatrix.cpp:452)
return self.thisPtr.add(<int>other)
AttributeError: 'stdMatrix.myTest' object has no attribute 'thisPtr'
I find this quite surprising, and could use some enlightenment. I can
easily enough work around this, but this is a bug, no?
Thanks for cython and best of luck on your sprint.
Best,
Jan
------------ class_operators.cc ---------------
class TEST
{
public:
int x;
TEST(int y) {x=y;}
int operator() () {x = 17; return x;}
int operator+(int y) {return x+y;}
int minimize() {return 25;}
};
----------------------------------------------------------
------stdMatrix.pyx----------------------------------------
cdef extern from "class_operators.cc":
ctypedef struct monkey "TEST":
int x
int (*minimize)()
int add "operator+"(int y)
int call "operator()"()
monkey* new_Test "new TEST"(int y)
void del_Test "delete"(monkey* x)
cdef class myTest:
cdef monkey *thisPtr
def __cinit__(self, int y):
self.thisPtr = new_Test(y)
def __dealloc__(self):
del_Test(self.thisPtr)
def min(self):
return self.thisPtr.minimize()
def plus(self, other):
return self.thisPtr.add(other)
def call(self):
return self.thisPtr.call()
--------------------------------------------------------------------
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