Re: [Swig-user] Bug in swig with %template/typemap of vector/namespace use?

[Thomas M. <to...@al...>]

I forgot to mention that I am building a python wrap...


From: Thomas Maslach [mailto:to...@al...]
Sent: Wednesday, January 08, 2014 5:53 PM
To: swi...@li...
Subject: [Swig-user] Bug in swig with %template/typemap of vector/namespace use?


I have the following list test code that I'm trying to get working (I've shortened it greatly from my real example).  I am using swig 2.0.11.

START INTERFACE FILE:
%module(directors="1", allprotected="1") test
%include "std_vector.i"

%{
#include <vector>
class myObject
{
public :
    enum EntityType { ET_ONE, ET_TWO };
};
typedef myObject::EntityType myObjectType;
%}

#include <vector>
class myObject
{
public :
    enum EntityType { ET_ONE, ET_TWO };
};
typedef myObject::EntityType myObjectType;

// First one doesn't work, second one does
%template (objectStlVector) std::vector<myObjectType>;
//%template (objectStlVector) std::vector<myObject::EntityType>;
:END INTERFACE FILE

When I run this code, I get the following type of errors (I've only included the first few):

D:\software\blue\devtools\bin\win64d\lib\swig2.0\std\std_vector.i(87) : Error: Can't copy typemap (directorout) std::vector< myObject::EntityType,std::allocator< myObject::EntityType > > = std::vector< myObject::EntityType,std::allocator< myObject::EntityType > > &DIRECTOROUT
D:\software\blue\devtools\bin\win64d\lib\swig2.0\std\std_vector.i(87) : Error: Can't copy typemap (in) std::vector< myObject::EntityType,std::allocator< myObject::EntityType > > *INPUT = std::vector< myObject::EntityType,std::allocator< myObject::EntityType > > *INOUT
D:\software\blue\devtools\bin\win64d\lib\swig2.0\std\std_vector.i(87) : Error: Can't copy typemap (in) std::vector< myObject::EntityType,std::allocator< myObject::EntityType > > &INPUT = std::vector< myObject::EntityType,std::allocator< myObject::EntityType > > &INOUT

After playing with this small test case for a while, I did find a workaround - if I avoid using the typedef alias to instantiate my vector, all works well.  That means uncommenting the commented line in the code above, while commenting the other %template.

The looks to be somewhat familiar with the "using std" issue that was run into a while back (found the thread on swig-user).

I do plan on reporting a bug soon as well.  However, does anyone have a clever workaround that I could put at the top of the file so that I don't have to change the %template line?  The reason I ask is because we auto-generate our interface files from header files.  I'd really like to not go into that code to put in a fix, just because there is quite a bit more effort involved than appending something at the top of the interface file (like a %rename perhaps?).  The auto-generating tool has the capability of adding stuff at the top of the interface file pretty easily..  If I have to, however, I will; I'd just like to avoid it if possible..

Thanks!

Tom