Struct Reader 

struct Reader<'a> {
    rest: &'a [u8],
}

A cursor over the block being read.

Fields

rest: &'a [u8]

What has not been read yet.

Implementations

impl<'a> Reader<'a>

fn take(&mut self, count: usize) -> Result<&'a [u8], CborError>

Takes count bytes, or says how many were missing.

fn header(&mut self) -> Result<Header, CborError>

Reads a header, refusing every non-shortest and indefinite form.

fn value(&mut self, depth: usize) -> Result<Value, CborError>

Reads one value at depth.

fn bytes(&mut self, length: u64) -> Result<&'a [u8], CborError>

Reads a byte string’s contents.

fn text(&mut self, length: u64) -> Result<String, CborError>

Reads a text string’s contents, which must be UTF-8.

fn list(&mut self, count: u64, depth: usize) -> Result<Value, CborError>

Reads a list’s items.

fn map(&mut self, count: u64, depth: usize) -> Result<Value, CborError>

Reads a map’s entries, which must be text-keyed and in order.

The ordering check is what makes decoding the inverse of encoding: a BTreeMap would happily hold keys read in any order and re-encode them sorted, so the block that arrived and the block that leaves would differ while every value in them matched.

fn link(&mut self, tag: u64, depth: usize) -> Result<Value, CborError>

Reads a tagged value, which in DAG-CBOR is a link and nothing else.