Medical Imaging Interaction Toolkit  2021.02.99-74f51bc4
Medical Imaging Interaction Toolkit
usServiceReference.h
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1 /*============================================================================
2 
3  Library: CppMicroServices
4 
5  Copyright (c) German Cancer Research Center (DKFZ)
6  All rights reserved.
7 
8  Licensed under the Apache License, Version 2.0 (the "License");
9  you may not use this file except in compliance with the License.
10  You may obtain a copy of the License at
11 
12  http://www.apache.org/licenses/LICENSE-2.0
13 
14  Unless required by applicable law or agreed to in writing, software
15  distributed under the License is distributed on an "AS IS" BASIS,
16  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
17  See the License for the specific language governing permissions and
18  limitations under the License.
19 
20 ============================================================================*/
21 
22 #ifndef USSERVICEREFERENCE_H
23 #define USSERVICEREFERENCE_H
24 
25 #include <usServiceInterface.h>
26 #include <usServiceReferenceBase.h>
27 
29 
62 template<class S>
63 class ServiceReference : public ServiceReferenceBase {
64 
65 public:
66 
67  typedef S ServiceType;
68 
74  ServiceReference() : ServiceReferenceBase()
75  {
76  }
77 
78  ServiceReference(const ServiceReferenceBase& base)
79  : ServiceReferenceBase(base)
80  {
81  const std::string interfaceId(us_service_interface_iid<S>());
82  if (GetInterfaceId() != interfaceId)
83  {
84  if (this->IsConvertibleTo(interfaceId))
85  {
86  this->SetInterfaceId(interfaceId);
87  }
88  else
89  {
90  this->operator =(0);
91  }
92  }
93  }
94 
95  using ServiceReferenceBase::operator=;
96 
97 };
98 
106 template<>
107 class ServiceReference<void> : public ServiceReferenceBase
108 {
109 
110 public:
111 
117  ServiceReference() : ServiceReferenceBase()
118  {
119  }
120 
121  ServiceReference(const ServiceReferenceBase& base)
122  : ServiceReferenceBase(base)
123  {
124  }
125 
126  using ServiceReferenceBase::operator=;
127 
128  typedef void ServiceType;
129 };
131 
138 typedef ServiceReference<void> ServiceReferenceU;
139 
141 
142 #endif // USSERVICEREFERENCE_H
ServiceReference< void > ServiceReferenceU
Definition: usModule.h:40
#define US_END_NAMESPACE
#define US_BEGIN_NAMESPACE