30 lines
853 B
Python
30 lines
853 B
Python
# Copyright (c) PARRRATE T&V 2021. All rights reserved.
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from bu4.evaluation.av.envtype import envtype
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from bu4.evaluation.constructs.elambda import ELambda
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from bu4.evaluation.constructs.evaluable import Evaluable
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from bu4.linking.constructs.linked import Linked
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__all__ = ('LLambda',)
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class LLambda(Linked):
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value: Linked
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def __init__(self, name: bytes, value: Linked):
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self.name = name
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self.value = value
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self.future = self.value.future - {name}
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self.multifuture = self.future
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self.used = name in value.future
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def evaluable(self, env: envtype) -> Evaluable:
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return ELambda(
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{name: env[name] for name in self.future} if self.used else env,
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self.name,
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self.value
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)
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def __str__(self):
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return f'({self.name.decode()}){self.value}'
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