# This is an automatically generated file.
# DO NOT EDIT or your changes may be overwritten
from __future__ import annotations
import base64
import json
from typing import List
from xdrlib3 import Packer, Unpacker
from .base import DEFAULT_XDR_MAX_DEPTH
from .host_function import HostFunction
from .soroban_authorization_entry import SorobanAuthorizationEntry
__all__ = ["InvokeHostFunctionOp"]
[docs]
class InvokeHostFunctionOp:
"""
XDR Source Code::
struct InvokeHostFunctionOp
{
// Host function to invoke.
HostFunction hostFunction;
// Per-address authorizations for this host function.
SorobanAuthorizationEntry auth<>;
};
"""
def __init__(
self,
host_function: HostFunction,
auth: List[SorobanAuthorizationEntry],
) -> None:
_expect_max_length = 4294967295
if auth and len(auth) > _expect_max_length:
raise ValueError(
f"The maximum length of `auth` should be {_expect_max_length}, but got {len(auth)}."
)
self.host_function = host_function
self.auth = auth
def pack(self, packer: Packer) -> None:
self.host_function.pack(packer)
packer.pack_uint(len(self.auth))
for auth_item in self.auth:
auth_item.pack(packer)
@classmethod
def unpack(
cls, unpacker: Unpacker, depth_limit: int = DEFAULT_XDR_MAX_DEPTH
) -> InvokeHostFunctionOp:
if depth_limit <= 0:
raise ValueError("Maximum decoding depth reached")
host_function = HostFunction.unpack(unpacker, depth_limit - 1)
length = unpacker.unpack_uint()
_remaining = len(unpacker.get_buffer()) - unpacker.get_position()
if _remaining < length:
raise ValueError(
f"auth length {length} exceeds remaining input length {_remaining}"
)
auth = []
for _ in range(length):
auth.append(SorobanAuthorizationEntry.unpack(unpacker, depth_limit - 1))
return cls(
host_function=host_function,
auth=auth,
)
def to_xdr_bytes(self) -> bytes:
packer = Packer()
self.pack(packer)
return packer.get_buffer()
@classmethod
def from_xdr_bytes(cls, xdr: bytes) -> InvokeHostFunctionOp:
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) -> InvokeHostFunctionOp:
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) -> InvokeHostFunctionOp:
return cls.from_json_dict(json.loads(json_str))
def to_json_dict(self) -> dict:
return {
"host_function": self.host_function.to_json_dict(),
"auth": [item.to_json_dict() for item in self.auth],
}
@classmethod
def from_json_dict(cls, json_dict: dict) -> InvokeHostFunctionOp:
host_function = HostFunction.from_json_dict(json_dict["host_function"])
auth = [
SorobanAuthorizationEntry.from_json_dict(item) for item in json_dict["auth"]
]
return cls(
host_function=host_function,
auth=auth,
)
def __hash__(self):
return hash(
(
self.host_function,
self.auth,
)
)
def __eq__(self, other: object):
if not isinstance(other, self.__class__):
return NotImplemented
return self.host_function == other.host_function and self.auth == other.auth
def __repr__(self):
out = [
f"host_function={self.host_function}",
f"auth={self.auth}",
]
return f"<InvokeHostFunctionOp [{', '.join(out)}]>"