Enum CarError 

pub enum CarError {
    BadVarint(usize),
    Truncated {
        at: usize,
        claimed: u64,
        left: usize,
    },
    Empty,
    Header(CborError),
    NotAHeader(String),
    BlockCid {
        at: usize,
        err: CidError,
    },
    Mislabelled {
        at: usize,
        claimed: Box<Cid>,
        actual: Box<Cid>,
    },
    Duplicate(Box<Cid>),
}

Why a byte sequence is not a CAR file this crate can read.

Variants

BadVarint(usize)

A varint that ran off the end, or one too long to be a u64.

Truncated

A section that claims more bytes than the file has left.

Fields

at: usize

Where the section’s length prefix was.

claimed: u64

How long it said it was.

left: usize

How much file was left after the prefix.

Empty

The file is empty, so it has not even a header.

Header(CborError)

The header block did not decode as DAG-CBOR.

NotAHeader(String)

The header decoded and was not the map a CAR header is.

BlockCid

A block’s CID did not parse.

Fields

at: usize

Where the section began.

err: CidError

Why the CID was refused.

Mislabelled

A block that does not hash to the CID it is filed under.

Fields

at: usize

Where the section began.

claimed: Box<Cid>

The CID the file claimed.

actual: Box<Cid>

The CID the bytes actually have.

Duplicate(Box<Cid>)

The same CID filed twice with different bytes, which cannot happen to a hash and means one of the two is not what it says.

Trait Implementations

impl Clone for CarError

fn clone(&self) -> CarError

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for CarError

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Display for CarError

fn fmt(&self, __formatter: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Error for CarError

fn source(&self) -> Option<&(dyn Error + 'static)>

Returns the lower-level source of this error, if any.

fn description(&self) -> &str

👎Deprecated since 1.42.0:

use the Display impl or to_string()

fn cause(&self) -> Option<&dyn Error>

👎Deprecated since 1.33.0:

replaced by Error::source, which can support downcasting

fn provide<'a>(&'a self, request: &mut Request<'a>)

🔬This is a nightly-only experimental API. (error_generic_member_access)

Provides type-based access to context intended for error reports.

impl From<CarError> for ProofError

fn from(source: CarError) -> Self

Converts to this type from the input type.

impl From<CborError> for CarError

fn from(source: CborError) -> Self

Converts to this type from the input type.

impl PartialEq for CarError

fn eq(&self, other: &CarError) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Eq for CarError

impl StructuralPartialEq for CarError