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1 // Copyright 2014 The Crashpad Authors. All rights reserved. | 1 // Copyright 2014 The Crashpad Authors. All rights reserved. |
2 // | 2 // |
3 // Licensed under the Apache License, Version 2.0 (the "License"); | 3 // Licensed under the Apache License, Version 2.0 (the "License"); |
4 // you may not use this file except in compliance with the License. | 4 // you may not use this file except in compliance with the License. |
5 // You may obtain a copy of the License at | 5 // You may obtain a copy of the License at |
6 // | 6 // |
7 // http://www.apache.org/licenses/LICENSE-2.0 | 7 // http://www.apache.org/licenses/LICENSE-2.0 |
8 // | 8 // |
9 // Unless required by applicable law or agreed to in writing, software | 9 // Unless required by applicable law or agreed to in writing, software |
10 // distributed under the License is distributed on an "AS IS" BASIS, | 10 // distributed under the License is distributed on an "AS IS" BASIS, |
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23 #include "base/numerics/safe_math.h" | 23 #include "base/numerics/safe_math.h" |
24 | 24 |
25 namespace crashpad { | 25 namespace crashpad { |
26 | 26 |
27 //! \brief Ensures that a range, composed of a base and size, does not overflow | 27 //! \brief Ensures that a range, composed of a base and size, does not overflow |
28 //! its data type. | 28 //! its data type. |
29 template <typename ValueType, typename SizeType = ValueType> | 29 template <typename ValueType, typename SizeType = ValueType> |
30 class CheckedRange { | 30 class CheckedRange { |
31 public: | 31 public: |
32 CheckedRange(ValueType base, SizeType size) { | 32 CheckedRange(ValueType base, SizeType size) { |
33 COMPILE_ASSERT(!std::numeric_limits<SizeType>::is_signed, | 33 static_assert(!std::numeric_limits<SizeType>::is_signed, |
34 SizeType_must_be_unsigned); | 34 "SizeType must be unsigned"); |
35 SetRange(base, size); | 35 SetRange(base, size); |
36 } | 36 } |
37 | 37 |
38 //! \brief Sets the range’s base and size to \a base and \a size, | 38 //! \brief Sets the range’s base and size to \a base and \a size, |
39 //! respectively. | 39 //! respectively. |
40 void SetRange(ValueType base, SizeType size) { | 40 void SetRange(ValueType base, SizeType size) { |
41 base_ = base; | 41 base_ = base; |
42 size_ = size; | 42 size_ = size; |
43 } | 43 } |
44 | 44 |
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106 private: | 106 private: |
107 ValueType base_; | 107 ValueType base_; |
108 SizeType size_; | 108 SizeType size_; |
109 | 109 |
110 DISALLOW_COPY_AND_ASSIGN(CheckedRange); | 110 DISALLOW_COPY_AND_ASSIGN(CheckedRange); |
111 }; | 111 }; |
112 | 112 |
113 } // namespace crashpad | 113 } // namespace crashpad |
114 | 114 |
115 #endif // CRASHPAD_UTIL_NUMERIC_CHECKED_RANGE_H_ | 115 #endif // CRASHPAD_UTIL_NUMERIC_CHECKED_RANGE_H_ |
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