[pygccxml-development] Wrapping C++ methods with std::vector<> arguments

[Norma Z. <nzi...@is...>]

I am having trouble wrapping C++ functions that have vectors as an argument. Ultimately, I want to be able to wrap functions with a signature similar to:

 

      UserDefinedReturnValue getDevice(std::vector<UserDefinedClass> & device)

 

At the present time, I cannot correctly wrap the function getTimeVector from the following class. 

 

#include <string>

#include <iostream>

#include <vector>

using namespace std;

class ISS

{

public:

      ISS();

      void  getTimeVector( std::vector<int> &);

protected:

      int         hour;

      int         minute;

      int         second;

};

 

In my generate_ISS.py module, I am adding nothing for the vector and am using the default 

 

import os

from pyplusplus import module_builder

from pyplusplus import function_transformers as FT

 

#Creating an instance of class that will help you to expose your declarations

mb = module_builder.module_builder_t( [r"C:/NJZsBoost/userAgent/real/ISS.h"]

                                      , gccxml_path=r"C:/gccxml/build/bin/debug/gccxml.exe" 

                                      , working_directory=r"C:/NJZsBoost/userAgent/real"

                                      , include_paths=['C:/NJZsBoost/userAgent/real']

                                      , define_symbols=[] )

 

#Well, don't you want to see what is going on?

mb.print_declarations()

 

#Creating code creator. After this step you should not modify/customize declarations.

mb.build_code_creator( module_name='py_ISS' )

 

#Writing code to file.

mb.write_module( './py_ISS.cpp' )

 

My generated file contains the following.

// This file has been generated by Py++.

#include "boost/python.hpp"

#include "__convenience.pypp.hpp"

#include "__call_policies.pypp.hpp"

#include "boost/python/suite/indexing/vector_indexing_suite.hpp"

#include "c:/njzsboost/useragent/real/iss.h"

namespace bp = boost::python;

 

BOOST_PYTHON_MODULE(py_ISS){

    bp::class_< std::vector< int > >("vector_less__int__grate_")    

        .def( bp::vector_indexing_suite< ::std::vector< int >, true >() );

 

    bp::class_< ISS >( "ISS" )    

        .def( bp::init< >() 

        .def( 

            "getTimeVector"

            , &::ISS::getTimeVector

            , ( bp::arg("arg0") ) 

}

 

When I attempt to use the output from this, I get the following error message.

 

>>> my_iss.getTimeVector()

Traceback (most recent call last):

   File "<stdin>", line 1, in <module>

Boost.Python.ArgumentError: Python argument types in

   ISS.getTimeVector(ISS)

did not match C++ signature:

   getTimeVector(class ISS {lvalue}, class std::vector<int, class std::allocator<int> > {lvalue} arg0)

 

I would appreciate it if you would show me an example similar to this. I would like to see:

 

1.    what I should have in the pyplusplus.py file (my generate_ISS.py file)

2.    what I should expect to see in the generated cpp file (my py_ISS.cpp file)

3.    how I use the wrapped function from python

 

I am sorry for the chopped up examples but when I tried to send you a zipped folder containing a complete set of files, it was rejected because it was zipped. When I tried to attach the files, it was rejected because it was too large. I do have many things working in the class. I was able to get all the function transformations working. I have stripped all these from the files to save space. I am using Pyplusplus-0.9.5 and pygccxml-0.9.5.

 

Thanks for any help you can give me. 

Norma