ProposedParamUpdates

class cometa.protocol_params.proposed_param_updates.ProposedParamUpdates(ptr)[source]

Bases: object

A map of genesis delegate key hashes to proposed protocol parameter updates.

This is used in the Shelley-era update mechanism where genesis keys propose parameter changes. Each genesis delegate can propose their own set of parameter updates.

__init__(ptr)[source]

Return type:: None

__enter__()[source]

Return type:: ProposedParamUpdates

__exit__(exc_type, exc_val, exc_tb)[source]

Return type:: None

__repr__()[source]

Return repr(self).

Return type:: str

__len__()[source]

Returns the number of proposed updates in the map.

Return type:: int

__iter__()[source]

Iterates over key-value pairs in the map.

Return type:: Iterator[Tuple[Blake2bHash, ProtocolParamUpdate]]

__getitem__(key)[source]

Gets the proposed update for a genesis delegate key hash.

Parameters:: key (Blake2bHash) – The genesis delegate key hash.
Returns:: The ProtocolParamUpdate for that key.
Raises:: KeyError – If no update exists for the key.
Return type:: ProtocolParamUpdate

__setitem__(key, value)[source]

Sets the proposed update for a genesis delegate key hash.

Parameters:

key (Blake2bHash) – The genesis delegate key hash.
value (ProtocolParamUpdate) – The ProtocolParamUpdate to set.

Return type:

None

__contains__(key)[source]

Checks if an update exists for the given key.

Parameters:: key (Blake2bHash)
Return type:: bool

classmethod new()[source]

Creates a new empty ProposedParamUpdates map.

Returns:: A new empty ProposedParamUpdates instance.
Raises:: CardanoError – If creation fails.
Return type:: ProposedParamUpdates

classmethod from_cbor(reader)[source]

Deserializes ProposedParamUpdates from CBOR data.

Parameters:: reader (CborReader) – A CborReader positioned at the updates data.
Returns:: A new ProposedParamUpdates deserialized from the CBOR data.
Raises:: CardanoError – If deserialization fails.
Return type:: ProposedParamUpdates

to_cbor(writer)[source]

Serializes the proposed param updates to CBOR format.

Parameters:: writer (CborWriter) – A CborWriter to write the serialized data to.
Raises:: CardanoError – If serialization fails.
Return type:: None

insert(key, update)[source]

Inserts a proposed update for a genesis delegate key hash.

Parameters:

key (Blake2bHash) – The genesis delegate key hash.
update (ProtocolParamUpdate) – The ProtocolParamUpdate to insert.

Raises:

CardanoError – If insertion fails.

Return type:

None

get(key)[source]

Retrieves the proposed update for a genesis delegate key hash.

Parameters:: key (Blake2bHash) – The genesis delegate key hash.
Returns:: The ProtocolParamUpdate if found, None otherwise.
Return type:: ProtocolParamUpdate | None

get_key_at(index)[source]

Gets the key at a specific index.

Parameters:: index (int) – The index (0-based).
Returns:: The Blake2bHash key at that index, or None if out of range.
Return type:: Blake2bHash | None

get_value_at(index)[source]

Gets the value at a specific index.

Parameters:: index (int) – The index (0-based).
Returns:: The ProtocolParamUpdate at that index, or None if out of range.
Return type:: ProtocolParamUpdate | None

keys()[source]

Iterates over the genesis delegate key hashes.

Return type:: Iterator[Blake2bHash]

values()[source]

Iterates over the proposed updates.

Return type:: Iterator[ProtocolParamUpdate]

items()[source]

Iterates over key-value pairs.

Return type:: Iterator[Tuple[Blake2bHash, ProtocolParamUpdate]]

to_cip116_json(writer)[source]

Serializes this object to CIP-116 compliant JSON.

Parameters:: writer (JsonWriter) – The JsonWriter to write the JSON to.
Raises:: CardanoError – If serialization fails.
Return type:: None