48 lines
1.3 KiB
C++
48 lines
1.3 KiB
C++
// Copyright 2016 The Chromium 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 MOJO_PUBLIC_CPP_BINDINGS_ARRAY_TRAITS_CARRAY_H_
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#define MOJO_PUBLIC_CPP_BINDINGS_ARRAY_TRAITS_CARRAY_H_
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#include <cstddef>
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#include "base/containers/span.h"
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#include "mojo/public/cpp/bindings/array_traits.h"
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namespace mojo {
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template <typename T>
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struct ArrayTraits<base::span<T>> {
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using Element = T;
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// There is no concept of a null span, as it is indistinguishable from the
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// empty span.
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static bool IsNull(const base::span<T>& input) { return false; }
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static size_t GetSize(const base::span<T>& input) { return input.size(); }
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static T* GetData(base::span<T>& input) { return input.data(); }
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static const T* GetData(const base::span<T>& input) { return input.data(); }
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static T& GetAt(base::span<T>& input, size_t index) {
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return input.data()[index];
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}
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static const T& GetAt(const base::span<T>& input, size_t index) {
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return input.data()[index];
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}
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static bool Resize(base::span<T>& input, size_t size) {
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if (size > input.size())
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return false;
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input = input.subspan(0, size);
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return true;
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}
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};
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} // namespace mojo
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#endif // MOJO_PUBLIC_CPP_BINDINGS_ARRAY_TRAITS_CARRAY_H_
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