PyCFunction_New() private method

private PyCFunction_New ( IntPtr ml, IntPtr self ) : IntPtr
ml IntPtr
self IntPtr
return IntPtr
Example #1
0
        public MethodWrapper(Type type, string name)
        {
            // Turn the managed method into a function pointer

            IntPtr fp = Interop.GetThunk(type.GetMethod(name));

            // XXX - here we create a Python string object, then take the
            // char * of the internal string to pass to our methoddef
            // structure. Its a hack, and the name is leaked!
#if (PYTHON32 || PYTHON33 || PYTHON34)
            IntPtr ps = Runtime.PyBytes_FromString(name);
            IntPtr sp = Runtime.PyBytes_AS_STRING(ps);
#else
            IntPtr ps = Runtime.PyString_FromString(name);
            IntPtr sp = Runtime.PyString_AS_STRING(ps);
#endif

            // Allocate and initialize a PyMethodDef structure to represent
            // the managed method, then create a PyCFunction.

            mdef = Runtime.PyMem_Malloc(4 * IntPtr.Size);
            Marshal.WriteIntPtr(mdef, sp);
            Marshal.WriteIntPtr(mdef, (1 * IntPtr.Size), fp);
            Marshal.WriteIntPtr(mdef, (2 * IntPtr.Size), (IntPtr)0x0003); // METH_VARARGS | METH_KEYWORDS
            Marshal.WriteIntPtr(mdef, (3 * IntPtr.Size), IntPtr.Zero);
            ptr = Runtime.PyCFunction_New(mdef, IntPtr.Zero);
        }