Module stream 

AbxStreamParser — pull parser over any Read source.

Unlike crate::AbxParser which requires the whole document in memory, AbxStreamParser reads from any std::io::Read implementor (files, TCP sockets, stdin, in-memory Cursor<Vec<u8>>, …) using a small internal ring buffer.

The public surface is intentionally identical to AbxParser so the two types are interchangeable; just swap the constructor.

Internal design

We keep a Vec<u8> ring buffer (buf) and a pos cursor. When a nom parser reports Incomplete we refill from the reader, slide unconsumed bytes to the front, and retry. This gives us:

• bounded memory — the buffer only grows when a single atom (e.g. a very long string) exceeds the current capacity.
• zero extra copies — nom operates directly on &buf[pos..].
• identical event types — Event, Attribute, AttributeValue are all shared with the slice parser.

Structs

AbxStreamParser

Pull parser that reads from any R: Read source.

DeserializeIter

Lazily yields each remaining <element>, deserialized into T. See AbxStreamParser::deserialize_iter.