Template and method pointeur

[linkjuice]

Hello everybody,

I'm trying to wrap several c++ class in c#.
I have a problem with a template method. I think I understand the way templates are managed through SWIG but this one is quiet complex:

class  RegistrationManager
{

public:
        template <class T>
        void registerService(std::string iServiceName,
                        ServiceObject::Status_t  (T::*method)(string iPack,string iService, Message& Message), std::string iClassName, std::string iMethodName);
...}

I include this decalration in the interface file with the template instanciation required :

%template(registerServiceObject) RegistrationManager::registerService<ServiceObject>;

ServiceObject is a class previously defined.

Here is what swig generates in c# :

public void registerServiceObject(string iServiceName, SWIGTYPE_m_T__f_r_q_const__otf__ServicePack_t_r_q_const__otf__Service_t_r_otf__InboundMessage__otf__RunnableObject__Status_t method, string iClassName, string iMethodName)
 
As you can see the second parameter is quiet weird. Do I forgot to do something?



 

[Daniel Shields]

>-----Original Message-----
>From: swig-user-bounces@...
>[mailto:swig-user-bounces@...] On Behalf Of linkjuice
>Sent: Thursday, June 05, 2008 12:22 PM
>To: swig-user@...
>Subject: [Swig-user] Template and method pointeur
>
>
>Hello everybody,
>
>I'm trying to wrap several c++ class in c#.
>I have a problem with a template method. I think I understand the way
>templates are managed through SWIG but this one is quiet complex:
>
>class  RegistrationManager
>{
>
>public:
> template <class T>
> void registerService(std::string iServiceName,
> ServiceObject::Status_t  
>(T::*method)(string iPack,string iService,
>Message& Message), std::string iClassName, std::string iMethodName);
>...}
>
>I include this decalration in the interface file with the template
>instanciation required :
>
>%template(registerServiceObject)
>RegistrationManager::registerService<ServiceObject>;
>
>ServiceObject is a class previously defined.
>
>Here is what swig generates in c# :
>
>public void registerServiceObject(string iServiceName,
>SWIGTYPE_m_T__f_r_q_const__otf__ServicePack_t_r_q_const__otf__S
>ervice_t_r_otf__InboundMessage__otf__RunnableObject__Status_t
>method, string iClassName, string iMethodName)
>  
>As you can see the second parameter is quiet weird. Do I forgot to do
>something?
>

This is basically the same problem I'm having. The %template directive
generates the wrapper correctly but does not seem to work for method
arguments/return values.

Daniel.

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[wsfulton]

Shields, Daniel P.(Technology) wrote:

>> -----Original Message-----
>> From: swig-user-bounces@...
>> [mailto:swig-user-bounces@...] On Behalf Of linkjuice
>> Sent: Thursday, June 05, 2008 12:22 PM
>> To: swig-user@...
>> Subject: [Swig-user] Template and method pointeur
>>
>>
>> Hello everybody,
>>
>> I'm trying to wrap several c++ class in c#.
>> I have a problem with a template method. I think I understand the way
>> templates are managed through SWIG but this one is quiet complex:
>>
>> class  RegistrationManager
>> {
>>
>> public:
>> template <class T>
>> void registerService(std::string iServiceName,
>> ServiceObject::Status_t  
>> (T::*method)(string iPack,string iService,
>> Message& Message), std::string iClassName, std::string iMethodName);
>> ...}
>>
>> I include this decalration in the interface file with the template
>> instanciation required :
>>
>> %template(registerServiceObject)
>> RegistrationManager::registerService<ServiceObject>;
>>
>> ServiceObject is a class previously defined.
>>
>> Here is what swig generates in c# :
>>
>> public void registerServiceObject(string iServiceName,
>> SWIGTYPE_m_T__f_r_q_const__otf__ServicePack_t_r_q_const__otf__S
>> ervice_t_r_otf__InboundMessage__otf__RunnableObject__Status_t
>> method, string iClassName, string iMethodName)
>>  
>> As you can see the second parameter is quiet weird. Do I forgot to do
>> something?
>>
>
> This is basically the same problem I'm having. The %template directive
> generates the wrapper correctly but does not seem to work for method
> arguments/return values.
>

It's not necessarily the same problem. This one is about using a member
function pointer in a templated function. There is a non-templated test
for member function pointers in Examples/test-suite/member_pointer.i
which you might want to have a look at (it uses %constant like C
function pointers).

BTW, the 'weird' parameter is a "Type wrapper" class, see the docs.

William

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