ITK  6.0.0
Insight Toolkit
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
32class DerefError : public ExceptionObject
33{
34public:
35 // Inherit the constructors from its base class.
36 using ExceptionObject::ExceptionObject;
37
39 itkOverrideGetNameOfClassMacro(DerefError);
40};
47template <typename T>
48T &
49Deref(T * const ptr)
50{
51 if (ptr == nullptr)
52 {
53 itkSpecializedMessageExceptionMacro(
54 DerefError, "The pointer passed to `itk::Deref(T*)` is null! T's typeid name: `" << typeid(T).name() << '`');
55 }
56 return *ptr;
57}
58} // namespace itk
61#endif
The "itk" namespace contains all Insight Segmentation and Registration Toolkit (ITK) classes....
T & Deref(T *const ptr)
Definition: itkDeref.h:49