32 lines
708 B
Python
32 lines
708 B
Python
"""A merkle tree node."""
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from typing import Any, Optional
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import attr
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from flat_tree import FlatTreeAccessor
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__all__ = ['MerkleTreeNode']
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@attr.s(auto_attribs=True)
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class MerkleTreeNode:
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"""A node in a merkle tree.
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:param index: The index of node
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:param parent: The parent of the node
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:param size: The size of the data
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:param data: The data of the node
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:param hash: The hash of the data
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"""
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index: int
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parent: int
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size: int
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data: bytes
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hash: Optional[str] = attr.Factory(str)
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def __attrs_post_init__(self) -> Any:
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"""Initialise the parent index."""
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flat_tree = FlatTreeAccessor()
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self.parent = flat_tree.parent(self.index)
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