hmz007
36ed224bac
Signed-off-by: hmz007 <hmz007@gmail.com> Change-Id: Ib87fdbe7a0be7dc961af3500fe9ea4589a127f9f
51 lines
1.4 KiB
C++
51 lines
1.4 KiB
C++
//
|
|
// Copyright (C) 2022 The Android Open Source Project
|
|
//
|
|
// Licensed under the Apache License, Version 2.0 (the "License");
|
|
// you may not use this file except in compliance with the License.
|
|
// You may obtain a copy of the License at
|
|
//
|
|
// http://www.apache.org/licenses/LICENSE-2.0
|
|
//
|
|
// Unless required by applicable law or agreed to in writing, software
|
|
// distributed under the License is distributed on an "AS IS" BASIS,
|
|
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
// See the License for the specific language governing permissions and
|
|
// limitations under the License.
|
|
//
|
|
|
|
#ifndef __BUFFER_VIEW_CPP_H
|
|
#define __BUFFER_VIEW_CPP_H
|
|
|
|
#include <stddef.h>
|
|
#include <assert.h>
|
|
|
|
// non-owning reference to a contiguous memory region. Similar to
|
|
// std::string_view, but allows you to modify underlying memory region.
|
|
template <typename T>
|
|
struct BufferView {
|
|
constexpr BufferView() = default;
|
|
constexpr BufferView(T* data, size_t size) : ptr_(data), size_(size) {}
|
|
|
|
T* data() { return ptr_; }
|
|
size_t size() const { return size_; }
|
|
T* begin() { return ptr_; };
|
|
T* end() { return ptr_ + size_; }
|
|
bool empty() const { return size_ == 0; }
|
|
|
|
T& operator[](const size_t idx) {
|
|
assert(idx < size_);
|
|
return ptr_[idx];
|
|
}
|
|
const T& operator[](const size_t idx) const {
|
|
assert(idx < size_);
|
|
return ptr_[idx];
|
|
}
|
|
|
|
private:
|
|
T* ptr_{};
|
|
size_t size_{};
|
|
};
|
|
|
|
#endif
|