builtup4/bu4/indexing/constructs/idelayed.py
2021-09-12 12:39:24 +03:00

38 lines
1.2 KiB
Python

# Copyright (c) PARRRATE T&V 2021. All rights reserved.
from bu4.evaluation.av.evtype import evtype
from bu4.evaluation.constructs.eattachable import EAttachable
from bu4.evaluation.constructs.edelayed import EDelayed
from bu4.evaluation.constructs.evaluable import Evaluable
from bu4.indexing.constructs.indexed import Indexed
from bu4.parsing.codes import CODE_DLYD
from bu4.transform.states.aftertransform import AfterTransform
from bu4.transform.states.transformfinished import TransformFinished
from bu4.transform.states.transformstart import TransformStart
from bu4.transform.states.transformstate import TransformState
from bu4.transform.targets.atlambda import ATLambda
__all__ = ('IDelayed',)
class IDelayed(Indexed):
def __init__(self, value: Indexed):
self.value = value
def attach(self, ev: evtype) -> Evaluable:
return EDelayed(EAttachable(
ev,
self.value
))
def __str__(self):
return f'&{self.value}'
def bytes(self) -> TransformState[bytes]:
return AfterTransform(
TransformStart(lambda: self.value.bytes()),
ATLambda(
lambda value: TransformFinished(bytes([CODE_DLYD, *value]))
)
)