NativeScriptSet

class cometa.witness_set.native_script_set.NativeScriptSet(ptr=None)[source]

Bases: Set[NativeScript]

Represents a set of native scripts.

Native scripts form an expression tree and evaluate to either true or false. They are used in Cardano to define spending conditions including multi-signature scripts, time-locks, and other types of scripts.

__init__(ptr=None)[source]

Return type:: None

__enter__()[source]

Return type:: NativeScriptSet

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

Return type:: None

__repr__()[source]

Return repr(self).

Return type:: str

classmethod from_cbor(reader)[source]

Deserializes a NativeScriptSet from CBOR data.

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

classmethod from_list(scripts)[source]

Creates a NativeScriptSet from an iterable of native script objects.

Parameters:: scripts (Iterable[NativeScriptLike]) – An iterable of NativeScript or native script type objects.
Returns:: A new NativeScriptSet containing all the scripts.
Raises:: CardanoError – If creation fails.
Return type:: NativeScriptSet

to_cbor(writer)[source]

Serializes the script set to CBOR format.

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

property use_tag: bool

Whether the set uses Conway era tagged encoding.

Returns:: True if using tagged encoding, False for legacy array encoding.

add(script)[source]

Adds a native script to the set.

Parameters:

script (NativeScriptLike) – The script to add. Can be a NativeScript or any specific native script type (ScriptPubkey, ScriptAll, ScriptAny, ScriptNOfK, ScriptInvalidBefore, ScriptInvalidAfter).

Raises:

CardanoError – If addition fails.
TypeError – If the script type is not supported.

Return type:

None

get(index)[source]

Retrieves a native script at the specified index.

Parameters:

index (int) – The index of the script to retrieve.

Returns:

The NativeScript at the specified index.

Raises:

CardanoError – If retrieval fails.
IndexError – If index is out of bounds.

Return type:

NativeScript

__len__()[source]

Returns the number of scripts in the set.

Return type:: int

__iter__()[source]

Iterates over all scripts in the set.

Return type:: Iterator[NativeScript]

__getitem__(index)[source]

Gets a script by index using bracket notation.

Parameters:: index (int)
Return type:: NativeScript

__bool__()[source]

Returns True if the set is not empty.

Return type:: bool

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

__contains__(item)[source]

Checks if an item is in the set.

Parameters:: item (object)
Return type:: bool

isdisjoint(other)[source]

Returns True if the set has no elements in common with other.

Parameters:: other (Iterable[NativeScript]) – Another iterable to compare with.
Returns:: True if the sets are disjoint.
Return type:: bool