#pragma once

#include <ckitty/memory/primitives.hpp>

namespace ckitty {

    /**
     * @brief Represents a piece of a shared buffer that
     * is not owned by this object.
     */
    class data_view {
    private:

        const u8* _begin;
        const u8* _end;

    public:

        data_view(const u8* begin, const u8* end)
        : _begin(begin), _end(end) {}

        data_view(const u8* data, const isize length)
        : _begin(data), _end(data + length) {}

        data_view(const std::string& str)
        : _begin((const u8*) str.begin().base()),
        _end((const u8*) str.end().base()) {}

        const u8* begin() const {
            return _begin;
        }

        const u8* end() const {
            return _end;
        }

        u8 operator[](isize i) const {
            return *(_begin + i);
        }

        isize length() const {
            return isize(_end - _begin);
        }

        const data_view sub_off(isize offset, isize length) const {
            return data_view(_begin + offset, _begin + offset + length);
        }

        const data_view sub_abs(isize begin, isize end) const {
            return data_view(_begin + begin, _begin + end);
        }
    
    };

}