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

from bu4.evaluation.av.envtype import envtype
from bu4.evaluation.constructs.eattachable import EAttachable
from bu4.evaluation.constructs.evaluable import Evaluable
from bu4.evaluation.constructs.evalue import EValue
from bu4.linking.constructs.linked import Linked

__all__ = ('EDelayed',)


class EDelayed(EValue):
    def __init__(self, env: envtype, value: Linked):
        self.env = env
        self.value = value
        self.evaluable = EAttachable(
            self.env,
            self.value
        )

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

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