Module codec 

The Wire trait and the struct layouts msgspec uses.

msgspec encodes a Struct in one of two layouts, both mirrored here by [wire_struct!]:

• array (array_like=True): [tag?, field, ...] in declaration order. Declaration order is the wire contract, so fields are only ever appended. A shorter array takes the remaining fields’ defaults; a longer one has its extra trailing elements ignored. A tagged struct (tag=True) starts with its class name.
• map: {name: value, ...} with every field present, in declaration order. Unknown keys are ignored and missing keys take their defaults.

Both layouts fail when a field without a default is absent.

Structs

Dict

A Python dict: a msgpack map whose entries keep their wire order.

Enums

StrOrList

A Python str | list[str] field.

Traits

Wire

A type with a msgpack encoding shared with the Python side.

Functions

decode_bytes

Decode a message that is a single msgpack buffer.

decode_frames

Decode a message from its frames, failing on bytes after the value.

encode_frames

Encode a value as a message: the msgpack buffer, then its out-of-band frames.