pygccxml-development

[pygccxml-development] type_traits.has_public_destructor problem

[Gustavo C. <gjc...@gm...>]

When parsing a simple class like:

/**
 * \brief a 3d cartesian position vector
 *
 * Unit is meters.
 */
class Vector
{
public:
  /**
   * \param _x x coordinate of vector vector
   * \param _y y coordinate of vector vector
   * \param _z z coordinate of vector vector
   *
   * Create vector vector (_x, _y, _z)
   */
  Vector (double _x, double _y, double _z);
  /**
   * Create vector vector (0.0, 0.0, 0.0)
   */
  Vector ();
  /**
   * x coordinate of vector vector
   */
  double x;
  /**
   * y coordinate of vector vector
   */
  double y;
  /**
   * z coordinate of vector vector
   */
  double z;
};

pygccxml.declarations.type_traits.has_public_destructor is returning False.
The class has an implicit public destructor, so pygccxml is wrong (0.9.5).

In my code I am working around this problem like this:

+    def _has_public_destructor(self, cls):
+        for member in cls.get_members():
+            if isinstance(member, calldef.destructor_t):
+                if member.access_type != 'public':
+                    return False
+        return True

Regards.

-- 
Gustavo J. A. M. Carneiro
INESC Porto, Telecommunications and Multimedia Unit
"The universe is always one step beyond logic." -- Frank Herbert

Re: [pygccxml-development] type_traits.has_public_destructor problem

[Roman Y. <rom...@gm...>]

On Sun, Jul 6, 2008 at 6:07 PM, Gustavo Carneiro <gjc...@gm...> wrote:
> When parsing a simple class like:
>
> /**
>  * \brief a 3d cartesian position vector
>  *
>  * Unit is meters.
>  */
> class Vector
> {
> public:
>   /**
>    * \param _x x coordinate of vector vector
>    * \param _y y coordinate of vector vector
>    * \param _z z coordinate of vector vector
>    *
>    * Create vector vector (_x, _y, _z)
>    */
>   Vector (double _x, double _y, double _z);
>   /**
>    * Create vector vector (0.0, 0.0, 0.0)
>    */
>   Vector ();
>   /**
>    * x coordinate of vector vector
>    */
>   double x;
>   /**
>    * y coordinate of vector vector
>    */
>   double y;
>   /**
>    * z coordinate of vector vector
>    */
>   double z;
> };
>
> pygccxml.declarations.type_traits.has_public_destructor is returning False.
> The class has an implicit public destructor, so pygccxml is wrong (0.9.5).
>
> In my code I am working around this problem like this:
>
> +    def _has_public_destructor(self, cls):
> +        for member in cls.get_members():
> +            if isinstance(member, calldef.destructor_t):
> +                if member.access_type != 'public':
> +                    return False
> +        return True
>
> Regards.

Thanks. Latest CVS version of GCCXML dumps artificial declarations. It
is the only way to reliably find-out whether a class has public
destructor or not.

For example, next use case is not covered by the posted code:

struct XXX{

private:

virtual ~XXX(){}

};



struct YYY : public XXX{

};



/*void do_smth(){

    YYY y;

}

*/


SVN version of pygccxml was updated.

I suggest you to switch to the latest versions

P.S. If nothing wrong happens, I will start working on next release - 1.0


-- 
Roman Yakovenko
C++ Python language binding
http://www.language-binding.net/

Re: [pygccxml-development] type_traits.has_public_destructor problem

[Gustavo C. <gjc...@gm...>]

2008/7/6 Roman Yakovenko <rom...@gm...>:

> On Sun, Jul 6, 2008 at 6:07 PM, Gustavo Carneiro <gjc...@gm...>
> wrote:
> > When parsing a simple class like:
> >
> > /**
> >  * \brief a 3d cartesian position vector
> >  *
> >  * Unit is meters.
> >  */
> > class Vector
> > {
> > public:
> >   /**
> >    * \param _x x coordinate of vector vector
> >    * \param _y y coordinate of vector vector
> >    * \param _z z coordinate of vector vector
> >    *
> >    * Create vector vector (_x, _y, _z)
> >    */
> >   Vector (double _x, double _y, double _z);
> >   /**
> >    * Create vector vector (0.0, 0.0, 0.0)
> >    */
> >   Vector ();
> >   /**
> >    * x coordinate of vector vector
> >    */
> >   double x;
> >   /**
> >    * y coordinate of vector vector
> >    */
> >   double y;
> >   /**
> >    * z coordinate of vector vector
> >    */
> >   double z;
> > };
> >
> > pygccxml.declarations.type_traits.has_public_destructor is returning
> False.
> > The class has an implicit public destructor, so pygccxml is wrong
> (0.9.5).
> >
> > In my code I am working around this problem like this:
> >
> > +    def _has_public_destructor(self, cls):
> > +        for member in cls.get_members():
> > +            if isinstance(member, calldef.destructor_t):
> > +                if member.access_type != 'public':
> > +                    return False
> > +        return True
> >
> > Regards.
>
> Thanks. Latest CVS version of GCCXML dumps artificial declarations. It
> is the only way to reliably find-out whether a class has public
> destructor or not.
>
> For example, next use case is not covered by the posted code:
>
> struct XXX{
>
> private:
>
> virtual ~XXX(){}
>
> };
>
>
>
> struct YYY : public XXX{
>
> };


I see.  I think I can always modify my code; it's just a matter to recursing
into base classes.  But I'm too lazy, some other day :P


>
>
>
>
> /*void do_smth(){
>
>    YYY y;
>
> }
>
> */
>
>
> SVN version of pygccxml was updated.
>
> I suggest you to switch to the latest versions


Last time I checked, I got numerous cases of implicit constructors not being
reported.  It might have been that I was using an old GCCXML CVS (0.9)
version and pygccxml expecting a new CVS snapshot, but I had no time to
test.

Thanks.

-- 
Gustavo J. A. M. Carneiro
INESC Porto, Telecommunications and Multimedia Unit
"The universe is always one step beyond logic." -- Frank Herbert