| # Gaudi Framework, version v22r4 |

Home |  | Generated: Fri Sep 2 2011

Public Member Functions | Public Attributes

# interfaceMatch< T > Struct Template Reference

Helper class for the cast used in the MPL for_each algorithm in the implementation of queryInterface. More...

`#include <implements.h>`

Collaboration diagram for interfaceMatch< T >:
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List of all members.

## Public Member Functions
| interfaceMatch (const T *_instance, const InterfaceID &_tid, void *&_ptr)
template<typename IID >
void | operator() (IID)
## Public Attributes
const InterfaceID & | target
| InterfaceID for the requested interface.
void *& | ptr
| Pointer to be filled.
const T * | instance
| Value of this.

## Detailed Description

### template<typename T>
struct interfaceMatch< T >

Helper class for the cast used in the MPL for_each algorithm in the implementation of queryInterface.

Author:
  Marco Clemencic

Definition at line 11 of file implements.h.

## Constructor & Destructor Documentation

template<typename T>

interfaceMatch< T >::interfaceMatch | ( | const T * | _instance,
|  | const InterfaceID & | _tid,
|  | void *& | _ptr
| ) |  | `[inline]`

Definition at line 18 of file implements.h.

                                                                               :
        target(_tid),
        ptr(_ptr),
        instance(_instance){}

## Member Function Documentation

template<typename T>
template<typename IID >

void interfaceMatch< T >::operator() | ( | IID | ) | `[inline]`

Definition at line 24 of file implements.h.

                                   {
        if ((!ptr) && target.versionMatch(IID::interfaceID())) {
          ptr = const_cast<void*>(reinterpret_cast<const void*>(static_cast<const typename IID::iface_type*>(instance)));
        }
      }

## Member Data Documentation

template<typename T>

const T* interfaceMatch< T >::instance

Value of this.

Definition at line 17 of file implements.h.

template<typename T>

void*& interfaceMatch< T >::ptr

Pointer to be filled.

Definition at line 15 of file implements.h.

template<typename T>

const InterfaceID& interfaceMatch< T >::target

InterfaceID for the requested interface.

Definition at line 13 of file implements.h.

The documentation for this struct was generated from the following file:

- /afs/cern.ch/sw/Gaudi/releases/GAUDI/GAUDI_v22r4/GaudiKernel/GaudiKernel/implements.h

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