ITK 6.0.0
Insight Toolkit
 
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itkDeref.h
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1/*=========================================================================
2 *
3 * Copyright NumFOCUS
4 *
5 * Licensed under the Apache License, Version 2.0 (the "License");
6 * you may not use this file except in compliance with the License.
7 * You may obtain a copy of the License at
8 *
9 * https://www.apache.org/licenses/LICENSE-2.0.txt
10 *
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
16 *
17 *=========================================================================*/
18#ifndef itkDeref_h
19#define itkDeref_h
20
21#include "itkMacro.h"
22#include <string>
23#include <typeinfo>
24
25namespace itk
26{
27
33{
34public:
35 // Inherit the constructors from its base class.
37
39 itkOverrideGetNameOfClassMacro(DerefError);
40};
41
45template <typename T>
46T &
47Deref(T * const ptr)
48{
49 if (ptr == nullptr)
50 {
51 itkSpecializedMessageExceptionMacro(
52 DerefError, "The pointer passed to `itk::Deref(T*)` is null! T's typeid name: `" << typeid(T).name() << '`');
53 }
54 return *ptr;
55}
56} // namespace itk
57
58#endif
ExceptionObject() noexcept=default
ExceptionObject() noexcept=default
The "itk" namespace contains all Insight Segmentation and Registration Toolkit (ITK) classes....
T & Deref(T *const ptr)
Definition itkDeref.h:47