Enum Error 

pub enum Error {
    IncorrectBatchSize {
        n_values: usize,
        batch_size: usize,
    },
    PowerOfTwoLengthRequired {
        n_leaves: usize,
    },
    IncorrectLayerDepth {
        layer_depth: usize,
        log_len: usize,
    },
    IndexOutOfRange {
        index: usize,
        log_len: usize,
    },
}

Reason a Merkle tree operation rejects its arguments.

Every variant carries the numbers that failed the check alongside the bound they broke. A log line therefore says which call was malformed without the reader rerunning it.

Variants

IncorrectBatchSize

A committed batch of values does not split into whole leaves.

Fields

n_values: usize

The number of values handed over for commitment.

batch_size: usize

The number of values every leaf must hold.

PowerOfTwoLengthRequired

The leaves a commitment splits into do not span a binary tree.

Fields

n_leaves: usize

The number of leaves the values split into.

IncorrectLayerDepth

A layer is asked for below the leaves of the tree.

Fields

layer_depth: usize

The depth asked for, counted from the root.

log_len: usize

The depth of the tree, which is its deepest valid layer.

IndexOutOfRange

A branch is asked for at a leaf the tree does not have.

Fields

index: usize

The leaf position asked for.

log_len: usize

Base-2 logarithm of the number of leaves the tree has.

Trait Implementations

impl Debug for Error

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

Formats the value using the given formatter.

impl Display for Error

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

Formats the value using the given formatter.

impl Error for Error

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.