31 lines
1.1 KiB
Python
31 lines
1.1 KiB
Python
# Copyright (c) PARRRATE T&V 2021. All rights reserved.
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from bu4.linkable.constructs.parsed import Parsed
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from bu4.linking.constructs.linked import Linked
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from bu4.linking.constructs.llambda import LLambda
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from bu4.transform.states.aftertransform import AfterTransform
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from bu4.transform.states.transformfinished import TransformFinished
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from bu4.transform.states.transformstart import TransformStart
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from bu4.transform.states.transformstate import TransformState
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from bu4.transform.targets.atlambda import ATLambda
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__all__ = ('PLambda',)
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class PLambda(Parsed):
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def __init__(self, name: bytes, value: Parsed):
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self.name = name
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self.value = value
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def link(self, promise: set[bytes]) -> TransformState[Linked]:
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assert self.name not in promise, f'overloaded: {self.name}'
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return AfterTransform(
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TransformStart(lambda: self.value.link(promise | {self.name})),
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ATLambda(
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lambda value: TransformFinished(LLambda(
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self.name,
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value
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))
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)
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)
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