pygccxml-development

[pygccxml-development] Multiple namespaces with the same name

[Vincent F. <vin...@gm...>]

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

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?
Why do I have this error?

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/

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

[Vincent F. <vin...@gm...>]

Ok, my classes were all generated in a namespace called postLib.
I've found it and replaced code by :

def rename_in_namespace(mb, nameList):
  for namespaceName in nameList:
    nspace = mb.namespace('postLib').namespace(namespaceName, recursive=False)
    for clz in nspace.classes():
      clz.rename(namespaceName.capitalize() + clz.name.capitalize())

This point is working now and I can see the light!

I'll have to fully understand call_policies to finish wrapping the
whole library.
I'll read the docs again and again :)

I open a new subject for the next little problem.

Thans a lot!

2008/6/12, Roman Yakovenko <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/
>