Re: [pygccxml-development] Multiple namespaces with the same name

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

On Thu, Jun 12, 2008 at 11:11 AM, Vincent Ferries
<vin...@gm...> wrote:
> I'm renaming most of my classes to avoid them to override themselves
> like explained in an other subject.
>
> In order to achieve this I coded following functions which prefix the
> classes in python with their namespace names.
>
>
>  rename_in_namespace(mb, ['nastran', 'samcef', 'generic', 'cla'])
>
>  #Writing code to file.
>  mb.split_module(settings.generated_files_dir)
>
>
> def rename_in_namespace(mb, nameList):
>  for namespaceName in nameList:
>    nspace = mb.global_ns.namespace(namespaceName)
>    for clz in nspace.classes():
>      clz.rename(namespaceName.capitalize() + clz.name.capitalize())
>
>
>
> There isn't apparently any way to get the name of the namespace the
> class is in,

Did you read the code I posted?
clz.parent will give you reference to the parent scope. In your case
this will return reference to the namespace

You also can use clz.decl_string, which will return full name ::X::Y::x

> but it's not right here the problem, I know their names
> explicitely.

It is up to you

> When I try to generate the wrapper code, I'm encountering following errors :
>
>
> Traceback (most recent call last):
>  File "generate_code.py", line 73, in ?
>    export()
>  File "generate_code.py", line 59, in export
>    rename_in_namespace(mb, ['nastran', 'samcef', 'generic', 'cla'])
>  File "generate_code.py", line 67, in rename_in_namespace
>    nspace = mb.global_ns.namespace(namespaceName)
>  File "/usr/lib/python2.4/site-packages/pygccxml/declarations/namespace.py",
> line 74, in namespace
>    , recursive=recursive )
>  File "/usr/lib/python2.4/site-packages/pygccxml/declarations/scopedef.py",
> line 343, in _find_single
>    found = matcher_module.matcher.get_single( matcher, decls, False )
>  File "/usr/lib/python2.4/site-packages/pygccxml/declarations/matcher.py",
> line 81, in get_single
>    raise matcher.multiple_declarations_found_t( decl_matcher )
> pygccxml.declarations.matcher.multiple_declarations_found_t: Multiple
> declarations has been found. matcher: [(decl type==namespace_t) and
> (name==nastran)]
>
>
>
> Even if the same namespace is defined many times, the delarations
> should complete themselves, not redefine each other right?

Right, but this functionality is missing in Py++, but as you already
saw it is pretty easy to implement it in the user script.

> Why do I have this error?

Because you have multiple namespaces named "nastran". I think next
solution will work for you:

mb = module_builder_t( ... )
gns = mb.global_ns

nastran = gns.namespace( "nastran", recursive=False )

This will search for namespace "nastran" under the global one. It will
not look under other namespaces.

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