50 lines
1.4 KiB
Python
50 lines
1.4 KiB
Python
from jax.tree_util import register_pytree_node_class
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@register_pytree_node_class
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class State:
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def __init__(self, **kwargs):
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self.__dict__["state_dict"] = kwargs
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def registered_keys(self):
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return self.state_dict.keys()
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def register(self, **kwargs):
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for key in kwargs:
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if key in self.registered_keys():
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raise ValueError(f"Key {key} already exists in state")
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return State(**{**self.state_dict, **kwargs})
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def update(self, **kwargs):
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for key in kwargs:
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if key not in self.registered_keys():
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raise ValueError(f"Key {key} does not exist in state")
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return State(**{**self.state_dict, **kwargs})
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def __getattr__(self, name):
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return self.state_dict[name]
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def __setattr__(self, name, value):
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raise AttributeError("State is immutable")
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def __repr__(self):
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return f"State ({self.state_dict})"
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def __getstate__(self):
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return self.state_dict.copy()
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def __setstate__(self, state):
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self.__dict__["state_dict"] = state
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def __contains__(self, item):
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return item in self.state_dict
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def tree_flatten(self):
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children = list(self.state_dict.values())
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aux_data = list(self.state_dict.keys())
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return children, aux_data
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@classmethod
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def tree_unflatten(cls, aux_data, children):
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return cls(**dict(zip(aux_data, children)))
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