builtup4/bu4/evaluation/constructs/eilambda.py

27 lines
810 B
Python

# Copyright (c) PARRRATE T&V 2021. All rights reserved.
from bu4.evaluation.av.evtype import evtype
from bu4.evaluation.av.lambdaev import LambdaEv
from bu4.evaluation.constructs.eattachable import EAttachable
from bu4.evaluation.constructs.evaluable import Evaluable
from bu4.evaluation.constructs.evalue import EValue
from bu4.indexing.constructs.indexed import Indexed
__all__ = ('EILambda',)
class EILambda(EValue):
def __init__(self, ev: evtype, value: Indexed, *, memoize: bool):
self.ev = ev
self.value = value
self.memoize = memoize
def call(self, argument: Evaluable) -> Evaluable:
return EAttachable(
LambdaEv(self.ev, argument, memoize=self.memoize),
self.value
)
def __str__(self):
return f'(){self.value}'