Module parse 

Zero-copy RESP3 parser.

Operates on buffered byte slices. The caller is responsible for reading data from the network into a buffer — this parser is purely synchronous.

The parser uses a Cursor<&[u8]> to track its position through the input buffer without consuming it, allowing the caller to retry once more data arrives.

Single-pass design

Earlier versions used a two-pass approach: check() to validate a complete frame exists, then parse() to build Frame values. This scanned every byte twice. The current implementation does a single pass that builds Frame values directly, returning Incomplete if the buffer doesn’t contain enough data yet.

Zero-copy bulk strings

When parsing from a Bytes buffer via parse_frame_bytes, bulk string data is returned as a zero-copy Bytes::slice() into the original buffer. This avoids a heap allocation per bulk string. The fallback parse_frame copies bulk data for callers that only have a &[u8].

Functions

parse_frame

Checks whether buf contains a complete RESP3 frame and parses it.

parse_frame_bytes

Zero-copy frame parser. Bulk string data is returned as Bytes::slice() into the input buffer, avoiding a heap copy per bulk string.