| // Copyright 2018 The RE2 Authors. All Rights Reserved. |
| // Use of this source code is governed by a BSD-style |
| // license that can be found in the LICENSE file. |
| |
| #ifndef UTIL_POD_ARRAY_H_ |
| #define UTIL_POD_ARRAY_H_ |
| |
| #include <memory> |
| #include <type_traits> |
| |
| namespace re2 { |
| |
| template <typename T> |
| class PODArray { |
| public: |
| static_assert(std::is_pod<T>::value, |
| "T must be POD"); |
| |
| PODArray() |
| : ptr_() {} |
| explicit PODArray(int len) |
| : ptr_(std::allocator<T>().allocate(len), Deleter(len)) {} |
| |
| T* data() const { |
| return ptr_.get(); |
| } |
| |
| int size() const { |
| return ptr_.get_deleter().len_; |
| } |
| |
| T& operator[](int pos) const { |
| return ptr_[pos]; |
| } |
| |
| private: |
| struct Deleter { |
| Deleter() |
| : len_(0) {} |
| explicit Deleter(int len) |
| : len_(len) {} |
| |
| void operator()(T* ptr) const { |
| std::allocator<T>().deallocate(ptr, len_); |
| } |
| |
| int len_; |
| }; |
| |
| std::unique_ptr<T[], Deleter> ptr_; |
| }; |
| |
| } // namespace re2 |
| |
| #endif // UTIL_POD_ARRAY_H_ |