libcruft-util/buffer/simple.hpp

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/*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*
* Copyright 2018 Danny Robson <danny@nerdcruft.net>
*/
#pragma once
#include "../std.hpp"
#include <cstddef>
#include <memory>
namespace cruft::buffer {
/// Implements a trivial statically allocated memory buffer with a fixed
/// construction time and no other fancy tricks (just something trivial
/// like new/delete).
///
/// The actual allocation size is guaranteed to be _at least_ the
/// specified size. It may be larger if the underlying implementation
/// requires page alignment or other system specific details.
///
/// Useful as a trivial universal implementation of the buffer concept.
class simple {
public:
using value_type = u08;
explicit simple (size_t _size);
simple (const simple&) = delete;
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simple (simple &&) noexcept = default;
simple& operator= (const simple&) = delete;
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simple& operator= (simple &&) noexcept;
value_type* begin (void)&;
value_type* end (void)&;
value_type const* cbegin (void)&;
value_type const* cend (void)&;
value_type const* begin (void) const&;
value_type const* end (void) const&;
std::size_t size (void) const;
std::size_t capacity (void) const;
private:
std::unique_ptr<u08[]> m_base;
std::size_t m_size;
};
}