#  Copyright (c) PARRRATE T&V 2021. All rights reserved.

from typing import TypeVar, Generic

from bu4.evaluation.constructs.attachable import Attachable
from bu4.evaluation.constructs.eattachable import EAttachable
from bu4.evaluation.constructs.evaluable import Evaluable
from bu4.evaluation.constructs.evalue import EValue
from bu4.evaluation.targets.avanonymouscontainer import AVAnonymousContainer

__all__ = ('EDelayed',)

T = TypeVar('T')


class EDelayed(EValue, Generic[T]):
    def __init__(self, env: T, value: Attachable[T]):
        self.env = env
        self.value = value
        self.evaluable = AVAnonymousContainer(EAttachable(
            self.env,
            self.value
        )).after_value

    def call(self, argument: Evaluable) -> Evaluable:
        return self.evaluable

    def __str__(self):
        return f'&{self.value}'