44 lines
1.2 KiB
C
44 lines
1.2 KiB
C
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// Copyright 2021 the V8 project authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#ifndef INCLUDE_V8_MEMORY_SPAN_H_
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#define INCLUDE_V8_MEMORY_SPAN_H_
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#include <stddef.h>
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#include "v8config.h" // NOLINT(build/include_directory)
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namespace v8 {
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/**
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* Points to an unowned continous buffer holding a known number of elements.
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*
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* This is similar to std::span (under consideration for C++20), but does not
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* require advanced C++ support. In the (far) future, this may be replaced with
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* or aliased to std::span.
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*
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* To facilitate future migration, this class exposes a subset of the interface
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* implemented by std::span.
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*/
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template <typename T>
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class V8_EXPORT MemorySpan {
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public:
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/** The default constructor creates an empty span. */
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constexpr MemorySpan() = default;
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constexpr MemorySpan(T* data, size_t size) : data_(data), size_(size) {}
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/** Returns a pointer to the beginning of the buffer. */
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constexpr T* data() const { return data_; }
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/** Returns the number of elements that the buffer holds. */
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constexpr size_t size() const { return size_; }
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private:
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T* data_ = nullptr;
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size_t size_ = 0;
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};
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} // namespace v8
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#endif // INCLUDE_V8_MEMORY_SPAN_H_
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