[Swig-devel] [ swig-Bugs-3191275 ] invalid parenthesis around template argument

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Bugs item #3191275, was opened at 2011-02-24 14:01
Message generated for change (Comment added) made by wsfulton
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Category: python
Group: None
>Status: Closed
Resolution: Fixed
Priority: 5
Private: No
Submitted By: Michel Zou (xantares09)
Assigned to: Nobody/Anonymous (nobody)
Summary: invalid parenthesis around template argument

Initial Comment:
Hi,
Current swig (2.0.2) doesn't like this smart pointer pattern :

%module example

%inline %{

  template <class T>
  class SmartPointer
  {
  public:
    inline const T * operator -> () const {}
    inline T * operator -> () {}
  };

  class FooImplementation
  {
  public:            
  static void Bar();  
  };

%}

%template(FooImplementationSmartPointer) SmartPointer<FooImplementation>;


I get this error :
common_wrap.cpp: In function ‘PyObject* _wrap_FooImplementationSmartPointer_Bar(PyObject*, PyObject*)’:
common_wrap.cpp:2988: error: template argument 1 is invalid
common_wrap.cpp:2988: error: expected ‘)’ before ‘const’
common_wrap.cpp:2988: error: expected ‘)’ before ‘;’ token
make[1]: *** [_common_la-common_wrap.lo] Error 1


The following code is generated :
SWIGINTERN PyObject *_wrap_FooImplementationSmartPointer_Bar(PyObject *SWIGUNUSEDPARM(self), PyObject *args) {
  PyObject *resultobj = 0;
  SmartPointer< FooImplementation > *arg1 = (SmartPointer< FooImplementation > *) 0 ;
  void *argp1 = 0 ;
  int res1 = 0 ;
  PyObject * obj0 = 0 ;
 
  if (!PyArg_ParseTuple(args,(char *)"O:FooImplementationSmartPointer_Bar",&obj0)) SWIG_fail;
  res1 = SWIG_ConvertPtr(obj0, &argp1,SWIGTYPE_p_SmartPointerT_FooImplementation_t, 0 |  0 );
  if (!SWIG_IsOK(res1)) {
    SWIG_exception_fail(SWIG_ArgError(res1), "in method '" "FooImplementationSmartPointer_Bar" "', argument " "1"" of type '" "SmartPointer< FooImplementation > *""'");
  }
  arg1 = reinterpret_cast< SmartPointer< FooImplementation > * >(argp1);
  (*(SmartPointer<(FooImplementation)> const *)arg1)->Bar();
  resultobj = SWIG_Py_Void();
  return resultobj;
fail:
  return NULL;
}


We can see the following line is incorrect :  
 (*(SmartPointer<(FooImplementation)> const *)arg1)->Bar();


Regards. 

----------------------------------------------------------------------

>Comment By: William Fulton (wsfulton)
Date: 2011-07-28 19:14

Message:
Closing

----------------------------------------------------------------------

Comment By: Michel Zou (xantares09)
Date: 2011-07-28 10:19

Message:
It has been fixed in 2.0.3

----------------------------------------------------------------------

You can respond by visiting: 
https://sourceforge.net/tracker/?func=detail&atid=101645&aid=3191275&group_id=1645