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"""Mapping to and from word pieces."""
from abc import ABC, abstractmethod
from typing import Dict, List
from torch import Tensor
class AbstractMapping(ABC):
def __init__(
self, input_size: List[int], mapping: List[str], inverse_mapping: Dict[str, int]
) -> None:
self.input_size = input_size
self.mapping = mapping
self.inverse_mapping = inverse_mapping
def __len__(self) -> int:
return len(self.mapping)
@property
def num_classes(self) -> int:
return self.__len__()
@abstractmethod
def get_token(self, *args, **kwargs) -> str:
...
@abstractmethod
def get_index(self, *args, **kwargs) -> Tensor:
...
@abstractmethod
def get_text(self, *args, **kwargs) -> str:
...
@abstractmethod
def get_indices(self, *args, **kwargs) -> Tensor:
...
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