opencxx-users

[Francois T. <fra...@la...>]

Hi everyone,

I'm trying to understand how to use Environment::isNamespace() (which is
documented in
http://www.csg.is.titech.ac.jp/~chiba/opencxx/ref-appendix.html)

The documentation reads: "If this environment represents a name space,
then this member function returns the name of that name space.
Otherwise, it returns nil."

I've written the following small metaprogram that aims at illustrating
that:

--
[..Some declaration stuff..]

void MetaNamespace::TranslateClass(Environment *e) {

  cerr << "Analysed Class is:" << this->Name() << endl ;
  cerr << "e->Dump(0): " ; e->Dump(0) ;
  cerr << "e->Dump(1): " ; e->Dump(1) ; 
  cerr << "e->Dump(2): " ; e->Dump(2) ; 
  cerr << "e->IsNamespace(): \"" 
       <<  e->IsNamespace()->ToString() 
       << "\"" << endl ; 
}
--

However, when I use it on the following source:
--
metaclass MetaNamespace ;
class A { };
namespace MyNamespace {
  class B { };
};
--

I obtain the following result:

--
$ occ -E testNamespace.cc
Analysed Class is:A
e->Dump(0): {A(65), }
e->Dump(1): Environment::Dump(): the bottom is reached.
e->Dump(2): Environment::Dump(): the bottom is reached.
e->IsNamespace(): "(null)"
Analysed Class is:B
e->Dump(0): {B(66), }
e->Dump(1): {A(65), }
e->Dump(2): Environment::Dump(): the bottom is reached.
e->IsNamespace(): "(null)"
--

As expected, B is correctly analysed as not being in the same scope as
A: The environment in which B is present is enclosed in the one A is in.
But e->IsNamespace() always returns 'null', although I would expect it
to return "MyNamespace" at some point (intuitively when analysing B).

I'm wondering if the problem comes from my not using
Environment::isNamespace() properly, or if there could be some bug at
work.

I'll be grateful for any hint.

Thanks a lot

Francois

-- 
Francois Taiani                 +33 (0) 5 6133 6406
LAAS-CNRS (http://www.laas.fr)  Dependable Computing 
http://www.laas.fr/~ftaiani     and Fault Tolerance