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