Luna/libluna/include/luna/Buffer.h

#pragma once
#include <luna/Result.h>
#include <luna/Types.h>

class Buffer
{
  public:
    Buffer();
    ~Buffer();

    Buffer(Buffer&& other);
    Buffer(const Buffer& other) = delete; // For now.

    static Result<Buffer> create_sized(usize size);

    Result<void> try_resize(usize new_size);

    Result<u8*> slice_at_end(usize size);

    Result<u8*> slice(usize offset, usize size);

    Result<void> append_data(const u8* data, usize size);

    usize dequeue_data(u8* data, usize size);

    u8* data()
    {
        return m_data;
    }

    const u8* data() const
    {
        return m_data;
    }

    u8* release_data();

    u8* end()
    {
        return m_data + m_size;
    }

    const u8* end() const
    {
        return m_data + m_size;
    }

    usize size() const
    {
        return m_size;
    }

    bool is_empty() const
    {
        return m_size == 0;
    }

  private:
    Buffer(u8* data, usize size);

    u8* m_data { nullptr };
    usize m_size { 0 };
};