Module protobuf 

A minimal no_std + no_alloc Protocol Buffers v3 wire-format decoder, sufficient for walking ONNX ModelProto messages by reference.

Because uor-addr is no_std + no_alloc by default, the ONNX realization hand-writes the protobuf decode rather than pulling in prost / protobuf (which require alloc). The decoder is reference-based: it walks the input bytes, validates field numbers / wire types, and yields borrowed field views — it never copies.

Authoritative source: https://protobuf.dev/programming-guides/encoding/.

Re-exports

pub use tag::Tag;

pub use tag::WireType;

pub use varint::read_varint;

pub use wire::Field;

pub use wire::FieldValue;

pub use wire::MessageReader;

pub use wire::WireError;

Modules

tag

Protobuf field tags: tag = (field_number << 3) | wire_type.

varint

Base-128 varint decoding (protobuf v3 wire format §“Base 128 Varints”): each byte’s high bit is a continuation flag; the low 7 bits are data, least-significant group first.

wire

Field-level protobuf reader: iterates the fields of a message, yielding borrowed Field views. No allocation; the reader holds a &[u8] and a cursor.