pygccxml-development

[pygccxml-development] How to get the class_t from a typedef_t

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

I am trying to parse C++ code like:

template<typename R,
   typename T1 = empty, typename T2 = empty,
   typename T3 = empty, typename T4 = empty,
   typename T5 = empty, typename T6 = empty>
class Callback ...;

later:

template<typename T1 = empty, typename T2 = empty,
         typename T3 = empty, typename T4 = empty>
class CallbackTraceSource : public CallbackTraceSourceBase {
public:

  typedef Callback<void,TraceContext const &,T1,T2,T3,T4> CallbackType;

...
};

I am trying to navigate from the CallbackTraceSource class, but no matter
what I do I cannot make pygccxml give me the class_t corresponding to the
typedef_t named 'CallbackType'.  I can only get a declarated_t or
class_declaration_t, but I cannot find any way to get the corresponding
class_t.  What am I missing?  I really need to do this, because I have to
work around the "template arguments being treated as strings, not types"
problem I mentioned a while ago.

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

Re: [pygccxml-development] How to get the class_t from a typedef_t

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

On Jan 13, 2008 6:53 PM, Gustavo Carneiro <gjc...@gm...> wrote:
> I am trying to parse C++ code like:
>
> template<typename R,
>     typename T1 = empty, typename T2 = empty,
>    typename T3 = empty, typename T4 = empty,
>     typename T5 = empty, typename T6 = empty>
> class Callback ...;
>
> later:
>
> template<typename T1 = empty, typename T2 = empty,
>           typename T3 = empty, typename T4 = empty>
> class CallbackTraceSource : public CallbackTraceSourceBase {
> public:
>
>    typedef Callback<void,TraceContext const &,T1,T2,T3,T4> CallbackType;
>
>  ...
> };
>
> I am trying to navigate from the CallbackTraceSource class, but no matter
> what I do I cannot make pygccxml give me the class_t corresponding to the
> typedef_t named 'CallbackType'.  I can only get a declarated_t or
> class_declaration_t, but I cannot find any way to get the corresponding
> class_t.  What am I missing?

Template instantiation. If you can modify the source code than use
'sizeof' operator:

>    typedef Callback<void,TraceContext const &,T1,T2,T3,T4> CallbackType;
private:
      enum{ CallbackTypeSize = sizeof( CallbackType ) };

HTH



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

Re: [pygccxml-development] How to get the class_t from a typedef_t

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

On 13/01/2008, Roman Yakovenko <rom...@gm...> wrote:
>
> On Jan 13, 2008 6:53 PM, Gustavo Carneiro <gjc...@gm...> wrote:
> > I am trying to parse C++ code like:
> >
> > template<typename R,
> >     typename T1 = empty, typename T2 = empty,
> >    typename T3 = empty, typename T4 = empty,
> >     typename T5 = empty, typename T6 = empty>
> > class Callback ...;
> >
> > later:
> >
> > template<typename T1 = empty, typename T2 = empty,
> >           typename T3 = empty, typename T4 = empty>
> > class CallbackTraceSource : public CallbackTraceSourceBase {
> > public:
> >
> >    typedef Callback<void,TraceContext const &,T1,T2,T3,T4> CallbackType;
> >
> >  ...
> > };
> >
> > I am trying to navigate from the CallbackTraceSource class, but no
> matter
> > what I do I cannot make pygccxml give me the class_t corresponding to
> the
> > typedef_t named 'CallbackType'.  I can only get a declarated_t or
> > class_declaration_t, but I cannot find any way to get the corresponding
> > class_t.  What am I missing?
>
> Template instantiation. If you can modify the source code than use
> 'sizeof' operator:
>
> >    typedef Callback<void,TraceContext const &,T1,T2,T3,T4> CallbackType;
> private:
>       enum{ CallbackTypeSize = sizeof( CallbackType ) };


Thanks, it really helped!

Best regards,

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