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#ifndef BUFFER_HH
#define BUFFER_HH
#include <cstddef>
#include <memory>
class Buffer {
public:
virtual ~Buffer() = default;
virtual void const* rptr(size_t& avail, size_t need = 1) = 0;
virtual void consume(size_t size) = 0;
virtual void* wptr(size_t& avail, size_t need = 1) = 0;
virtual void commit(size_t size) = 0;
[[nodiscard]] virtual bool full() const = 0;
[[nodiscard]] virtual bool empty() const = 0;
[[nodiscard]]
static std::unique_ptr<Buffer> fixed(size_t size);
[[nodiscard]]
static std::unique_ptr<Buffer> dynamic(size_t start_size, size_t max_size);
protected:
Buffer() = default;
Buffer(Buffer const&) = delete;
Buffer& operator=(Buffer const&) = delete;
};
#endif // BUFFER_HH
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