SWIG is a tool that simplifies the integration of C/C++ with common scripting languages

jonrue | 20 Jul 2012 20:19

How to apply the %nspace feature to template instantiations?

The %nspace feature is very helpful and works great with CSharp and
Java. However, I could not figure out how to convince SWIG to generate
template instantiations in a namespace. Is there any way to achieve
this?

I really hope this is somehow possible. Thanks to %nspace my CSharp
wrapper assembly reflects nicely the namespaces of the wrapped C++
code, except for all the instantiated template classes which end up
outside any namespace.

Thanks in advance for your feedback, much appreciated.

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jonrue | 25 Jul 2012 10:56

Re: How to apply the %nspace feature to template instantiations?

Hi All,

In the meantime I found, the %nspace feature is working for templates
(in most cases) as follows. The %nspace directive must appear before
the declaration of the addressed data type. Hence, the sequence of
statement is:

%nspace ...
%include ...
%template ...

In some cases, I couldn't get this to work though.

The following example illustrates this.

Source Test.h:

namespace test{
  template<typename T>
  class Test{};
  class A{};
}

SWIG file example.i:

 %module example
 %{
 #include <vector>
 #include "Test.h"
 %}

(Continue reading)

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William S Fulton | 27 Jul 2012 22:27

Re: How to apply the %nspace feature to template instantiations?

On 25/07/12 09:56, jonrue <at> gmx.net wrote:
> Hi All,
>
> In the meantime I found, the %nspace feature is working for templates
> (in most cases) as follows. The %nspace directive must appear before
> the declaration of the addressed data type. Hence, the sequence of
> statement is:
>
> %nspace ...
> %include ...
> %template ...
>
%nspace is a %feature, so that is correct.

> In some cases, I couldn't get this to work though.
>
> The following example illustrates this.
>
> Source Test.h:
>
> namespace test{
>    template<typename T>
>    class Test{};
>    class A{};
> }
>
> SWIG file example.i:
>
>   %module example
>   %{

(Continue reading)