Re: [Swig-user] Swig wrap up of std::tr1::unordered_map

[charlie <cha...@gm...>]

Hi, William

Thanks for replying. I may made some typos and omitted some part of the
interface file when I am making up the example. I do have a %include in
"test.h". so maybe just let me explain the thing accurately again and paste
all contents of all files of this simple example here below:

--test.i--
*%module test
%{
  #include "test.h"
%}
%include "test.h"
%template(u1A) A<UUM1>;
%template(v1A) A<VOM1>;
%template(u2A) A<UUM2>;*

--test.h--
*#include <vector>
#include <map>
#include <tr1/unordered_map>
using namespace std;
//using namespace std::tr1;
// would cause 'nothing known about namespace std::tr' error

typedef tr1::unordered_map<int, double> UM;
typedef tr1::unordered_map<int, UM> UUM1;
// nested way(1), this doesn't work
typedef tr1::unordered_map<int, tr1::unordered_map<int, double> > UUM2; //
nested way(2), this works
typedef map<int, double> OM;
typedef vector<OM> VOM1;
// nested way(1), here this works

UUM1 get_UUM1(){ return UUM1(); };
UUM2 get_UUM2(){ return UUM2(); };
VOM1 get_VOM1(){ return VOM1(); };

template <class M>
class A{
public:
    M a;
    A( M m ): a(m){ };
    ~A() { };
};*

-- in python --
>>> import test
>>> uum1=test.get_UUM1()
>>> uum2=test.get_UUM2()
>>> vom1=test.get_VOM1()

>>> print uum1
<Swig Object of type 'UUM1 *' at 0xb7ba4440>
>>> print uum2
<Swig Object of type 'tr1::unordered_map< int,tr1::unordered_map< int,double
> > *' at 0xb7ba43e0>
>>> print vom1
<Swig Object of type 'VOM1 *' at 0xb7ba4440>

>>> a=test.u1A(uum1)
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "test.py", line 95, in __init__
    this = _test.new_u1A(*args)
TypeError: in method 'new_u1A', argument 1 of type 'tr1::unordered_map<
int,tr1::unordered_map< int,double > >'
>>> a=test.v1A(vom1)
>>> a=test.u2A(uum2)

-- compling with namespace std::tr1 used --

*python setup.py build_ext --inplace --force
running build_ext
building '_test' extension
swigging test.i to test_wrap.cpp
swig -python -c++ -modern -o test_wrap.cpp test.i
test.h:5: Error: Nothing known about namespace 'std::tr1'
error: command 'swig' failed with exit status 1*

I think you can reproduce the error by using the above two files. Did you
mean I shall include the <tr1/unordered_map> file like in the %{ #include
"tr1/unordered_map.h" %} and then %include "tr1/unordered_map.h"? Is this
the correct way to do?

Thanks

Charlie


On Wed, Apr 15, 2009 at 4:28 PM, William S Fulton
<ws...@fu...>wrote: