jam.types.base.sequences.bytes.bit_array module

class jam.types.base.sequences.bytes.bit_array.BitArray(value: int | bool | bytes | str | bytearray | memoryview | Sequence)

Bases: Array

Fixed-length bit sequence implementation that supports codec operations.

A BitSequence represents a fixed-length sequence of bits, where each bit is represented as a Boolean value. The sequence is encoded as a compact bit array.

__init__(value: int | bool | bytes | str | bytearray | memoryview | Sequence)

Initialize bit sequence.

Parameters:

value – Initial values. Must match the fixed length. All elements must be Boolean instances.

Raises:

• TypeError – If elements are not Boolean instances

• ValueError – If initial values don’t match fixed length

classmethod from_json(data: Any) → BitArray

Deserialize from JSON.

jam.types.base.sequences.bytes.bit_array.decodable_bit_array(length: int, bitorder: Literal['msb', 'lsb'] | None = 'msb') → Callable[[Type[BitArray]], Type[BitArray]]

Extend existing decodable_array to be array of Bits

class jam.types.base.sequences.bytes.bit_array.Byte(value: int | bool | bytes | str | bytearray | memoryview | Sequence)

Bases: BitArray

A single byte value that supports codec operations. Array uses BitSequenceCodec.

A Byte represents an 8-bit array that is encoded as a single byte.

static decode_from(buffer: bytes | bytearray | memoryview, offset: int = 0) → Tuple[BitArray, int]

Decode from buffer. Must be implemented by subclasses or added via decorator.

Parameters:

• buffer – Buffer to decode from

• offset – Starting position in buffer

Returns:

• The decoded value

• Number of bytes read

Return type:

Tuple containing