| // Copyright 2021 the V8 project authors. All rights reserved. | |
| // Use of this source code is governed by a BSD-style license that can be | |
| // found in the LICENSE file. | |
| namespace v8 { | |
| /** | |
| * Points to an unowned continous buffer holding a known number of elements. | |
| * | |
| * This is similar to std::span (under consideration for C++20), but does not | |
| * require advanced C++ support. In the (far) future, this may be replaced with | |
| * or aliased to std::span. | |
| * | |
| * To facilitate future migration, this class exposes a subset of the interface | |
| * implemented by std::span. | |
| */ | |
| template <typename T> | |
| class V8_EXPORT MemorySpan { | |
| public: | |
| /** The default constructor creates an empty span. */ | |
| constexpr MemorySpan() = default; | |
| constexpr MemorySpan(T* data, size_t size) : data_(data), size_(size) {} | |
| /** Returns a pointer to the beginning of the buffer. */ | |
| constexpr T* data() const { return data_; } | |
| /** Returns the number of elements that the buffer holds. */ | |
| constexpr size_t size() const { return size_; } | |
| private: | |
| T* data_ = nullptr; | |
| size_t size_ = 0; | |
| }; | |
| } // namespace v8 | |