Module buf 

Zero-copy cursor primitives over borrowed byte slices.

ReadBuf wraps an immutable &[u8] and tracks a read position. It hands back sub-slices that borrow from the original buffer, so decoders never copy. WriteBuf wraps a mutable &mut [u8] and tracks a write position into a caller-owned region.

Both cursors are no_std-compatible and allocation-free.

Structs

ReadBuf

Cursor over an immutable byte slice with a tracked read position.

WriteBuf

Cursor over a mutable byte slice with a tracked write position.