Robin Gilks wrote:
Following on from my expanding embedded code thread, I'm making
progress in that if I hack the class instantiation in the wrapper that
pybindgen produces I can get it all to work.
With that in mind, I'm trying to use add_function_as_constructor but
it won't let me use a 'void *' or 'PyObject *' pointer as a parameter.
I have to use 'uint32_t *' and then edit the code!!
My generator code looks like this...
testclass = mod.add_class('testclass')
testclass.add_function_as_constructor('PyCObject_AsVoidPtr', None,
[Parameter.new(''PyObject *', 'instance', transfer_ownership = False)])
which results in the traceback of...
Traceback (most recent call last):
File "testclassgen.py", line 31, in <module>
my_module_gen(sys.stdout)
File "testclassgen.py", line 28, in my_module_gen
mod.generate(FileCodeSink(out_file) )
File "/usr/local/lib/python2.5/site-packages/pybindgen/module.py",
line 839, in generate
self.do_generate(sink_manager, module_file_base_name)
File "/usr/local/lib/python2.5/site-packages/pybindgen/module.py",
line 721, in do_generate
class_.generate(sink, self)
File "/usr/local/lib/python2.5/site-packages/pybindgen/cppclass.py",
line 1481, in generate
have_constructor = self._generate_constructor(code_sink)
File "/usr/local/lib/python2.5/site-packages/pybindgen/cppclass.py",
line 1620, in _generate_constructor
overload.generate(code_sink)
File
"/usr/local/lib/python2.5/site-packages/pybindgen/overloading.py",
line 183, in generate
(code_sink,), {}, self.all_wrappers[0])
File "/usr/local/lib/python2.5/site-packages/pybindgen/utils.py",
line 124, in call_with_error_handling
return callback(*args, **kwargs)
File "/usr/local/lib/python2.5/site-packages/pybindgen/cppmethod.py",
line 520, in generate
% self._class.name)
AssertionError: something went wrong with the type handlers;
constructors need parameter names, yet no names were given for the
class testclass constructor
I've found the pybindgen commit for revision 628 and that fixes the
PyObject problem - got a new one now!! I can't work out the syntax to
return any sort of pointer for example
mod.add_method('methodA', ReturnValue.new('uint8_t *'), [])
This is probably me again not understanding the Python side of things -
how would I return a string otherwise?
I see that some of the fixes are in the NS-3 project as
pybindgen-0.10.0.630 (I assume this means up to and including commit
630) but there is no waf included in this project so I can't build it :-(
Again, any help would be appreciated...
Cheers
--
Robin
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