Enum StoreError 

pub enum StoreError {
    Missing(Box<Cid>),
    Layer {
        cid: Box<Cid>,
        found: usize,
        expected: usize,
    },
    RootLayer(Box<Cid>),
}

Why a tree could not be walked.

Variants

Missing(Box<Cid>)

A link naming a block the store does not hold.

Layer

A subtree that is not one layer below the node pointing at it.

Fields

cid: Box<Cid>

The subtree that disagreed.

found: usize

The layer the node’s own keys put it on.

expected: usize

The layer its parent puts it on.

RootLayer(Box<Cid>)

A root whose own layer cannot be told, which every walk needs to know.

A node with no keys and a subtree below it is one layer under whatever pointed at it, and a root has nothing pointing at it. The tree that produced it is malformed: Tree::build strips those from the top, and so does every other implementation.

Trait Implementations

impl Clone for StoreError

fn clone(&self) -> StoreError

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for StoreError

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

Formats the value using the given formatter.

impl Display for StoreError

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

Formats the value using the given formatter.

impl Error for StoreError

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 PartialEq for StoreError

fn eq(&self, other: &StoreError) -> 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 StoreError

impl StructuralPartialEq for StoreError