# This is an automatically generated file.
# DO NOT EDIT or your changes may be overwritten
from __future__ import annotations
import base64
import json
from xdrlib3 import Packer, Unpacker
from .base import DEFAULT_XDR_MAX_DEPTH, Opaque
__all__ = ["Hash"]
[docs]
class Hash:
"""
XDR Source Code::
typedef opaque Hash[32];
"""
def __init__(self, hash: bytes) -> None:
_expect_length = 32
if hash and len(hash) != _expect_length:
raise ValueError(
f"The length of `hash` should be {_expect_length}, but got {len(hash)}."
)
self.hash = hash
def pack(self, packer: Packer) -> None:
Opaque(self.hash, 32, True).pack(packer)
@classmethod
def unpack(
cls, unpacker: Unpacker, depth_limit: int = DEFAULT_XDR_MAX_DEPTH
) -> Hash:
if depth_limit <= 0:
raise ValueError("Maximum decoding depth reached")
hash = Opaque.unpack(unpacker, 32, True)
return cls(hash)
def to_xdr_bytes(self) -> bytes:
packer = Packer()
self.pack(packer)
return packer.get_buffer()
@classmethod
def from_xdr_bytes(cls, xdr: bytes) -> Hash:
unpacker = Unpacker(xdr)
result = cls.unpack(unpacker)
remaining = len(xdr) - unpacker.get_position()
if remaining != 0:
raise ValueError(f"Unexpected trailing {remaining} bytes in XDR data")
return result
def to_xdr(self) -> str:
xdr_bytes = self.to_xdr_bytes()
return base64.b64encode(xdr_bytes).decode()
@classmethod
def from_xdr(cls, xdr: str) -> Hash:
xdr_bytes = base64.b64decode(xdr.encode())
return cls.from_xdr_bytes(xdr_bytes)
def to_json(self) -> str:
return json.dumps(self.to_json_dict())
@classmethod
def from_json(cls, json_str: str) -> Hash:
return cls.from_json_dict(json.loads(json_str))
def to_json_dict(self):
return Opaque.to_json_dict(self.hash)
@classmethod
def from_json_dict(cls, json_value: str) -> Hash:
return cls(Opaque.from_json_dict(json_value))
def __hash__(self):
return hash((self.hash,))
def __eq__(self, other: object):
if not isinstance(other, self.__class__):
return NotImplemented
return self.hash == other.hash
def __repr__(self):
return f"<Hash [hash={self.hash}]>"