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from abc import ABCMeta, abstractmethod
from typing import Tuple, Sequence, List


from ..boards.abstract_board import AbstractBoard

from m5.objects import AddrRange, Port, SubSystem, MemCtrl


class AbstractMemorySystem(SubSystem):
    __metaclass__ = ABCMeta

    def __init__(self) -> None:
        super(AbstractMemorySystem, self).__init__()

    @abstractmethod
    def incorporate_memory(self, board: AbstractBoard) -> None:
        raise NotImplementedError

    @abstractmethod
    def get_mem_ports(self) -> Sequence[Tuple[AddrRange, Port]]:
        raise NotImplementedError

    @abstractmethod
    def get_memory_controllers(self) -> List[MemCtrl]:
        raise NotImplementedError

    @abstractmethod
    def get_memory_ranges(self) -> List[AddrRange]:
        """All of the memory ranges that this memory system responds to."""
        raise NotImplementedError