36 lines
1.5 KiB
Python
36 lines
1.5 KiB
Python
from eth2spec.utils.ssz.ssz_impl import hash_tree_root, serialize
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from eth2spec.utils.ssz.ssz_typing import (
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uint, boolean,
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Bitlist, Bitvector, Container, Vector, List
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)
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def encode(value, include_hash_tree_roots=False):
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if isinstance(value, uint):
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# Larger uints are boxed and the class declares their byte length
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if value.__class__.type_byte_length() > 8:
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return str(int(value))
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return int(value)
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elif isinstance(value, boolean):
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return value == 1
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elif isinstance(value, (Bitlist, Bitvector)):
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return '0x' + serialize(value).hex()
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elif isinstance(value, list): # normal python lists
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return [encode(element, include_hash_tree_roots) for element in value]
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elif isinstance(value, (List, Vector)):
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return [encode(element, include_hash_tree_roots) for element in value]
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elif isinstance(value, bytes): # bytes, ByteList, ByteVector
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return '0x' + value.hex()
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elif isinstance(value, Container):
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ret = {}
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for field_name in value.fields().keys():
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field_value = getattr(value, field_name)
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ret[field_name] = encode(field_value, include_hash_tree_roots)
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if include_hash_tree_roots:
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ret[field_name + "_hash_tree_root"] = '0x' + hash_tree_root(field_value).hex()
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if include_hash_tree_roots:
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ret["hash_tree_root"] = '0x' + hash_tree_root(value).hex()
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return ret
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else:
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raise Exception(f"Type not recognized: value={value}, typ={type(value)}")
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