Enum sp_mmr_primitives::Error

pub enum Error {
    InvalidNumericOp,
    Push,
    GetRoot,
    Commit,
    GenerateProof,
    Verify,
    LeafNotFound,
    PalletNotIncluded,
    InvalidLeafIndex,
    InvalidBestKnownBlock,
}

Merkle Mountain Range operation error.

Variants

InvalidNumericOp

Error during translation of a block number into a leaf index.

Push

Error while pushing new node.

GetRoot

Error getting the new root.

Commit

Error committing changes.

GenerateProof

Error during proof generation.

Verify

Proof verification error.

LeafNotFound

Leaf not found in the storage.

PalletNotIncluded

Mmr Pallet not included in runtime

InvalidLeafIndex

Cannot find the requested leaf index

InvalidBestKnownBlock

The provided best know block number is invalid.

Implementations

impl Error

pub fn log_error(self, e: impl Debug) -> Self

Consume given error e with self and generate a native log entry with error details.

pub fn log_debug(self, e: impl Debug) -> Self

Consume given error e with self and generate a native log entry with error details.

Examples found in repository

src/utils.rs (line 36)

pub fn first_mmr_block_num<H: Header>(
	best_block_num: H::Number,
	mmr_leaf_count: LeafIndex,
) -> Result<H::Number, Error> {
	let mmr_blocks_count = mmr_leaf_count.try_into().map_err(|_| {
		Error::InvalidNumericOp
			.log_debug("The number of leaves couldn't be converted to a block number.")
	})?;
	best_block_num
		.checked_sub(&mmr_blocks_count)
		.and_then(|last_non_mmr_block| last_non_mmr_block.checked_add(&One::one()))
		.ok_or_else(|| {
			Error::InvalidNumericOp
				.log_debug("The best block should be greater than the number of mmr blocks.")
		})
}

/// Convert a block number into a leaf index.
pub fn block_num_to_leaf_index<H: Header>(
	block_num: H::Number,
	first_mmr_block_num: H::Number,
) -> Result<LeafIndex, Error> {
	let leaf_idx = block_num.checked_sub(&first_mmr_block_num).ok_or_else(|| {
		Error::InvalidNumericOp
			.log_debug("The provided block should be greater than the first mmr block.")
	})?;

	leaf_idx.try_into().map_err(|_| {
		Error::InvalidNumericOp.log_debug("Couldn't convert the leaf index to `LeafIndex`.")
	})
}

Trait Implementations

impl Debug for Error

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

Formats the value using the given formatter.

impl Decode for Error

fn decode<__CodecInputEdqy: Input>(
    __codec_input_edqy: &mut __CodecInputEdqy
) -> Result<Self, Error>

Attempt to deserialise the value from input.

fn skip<I>(input: &mut I) -> Result<(), Error>where
    I: Input,

Attempt to skip the encoded value from input.

fn encoded_fixed_size() -> Option<usize>

Returns the fixed encoded size of the type.

impl Display for Error

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

Formats the value using the given formatter.

impl Encode for Error

fn encode_to<__CodecOutputEdqy: Output + ?Sized>(
    &self,
    __codec_dest_edqy: &mut __CodecOutputEdqy
)

Convert self to a slice and append it to the destination.

fn size_hint(&self) -> usize

If possible give a hint of expected size of the encoding.

fn encode(&self) -> Vec<u8, Global>

Convert self to an owned vector.

fn using_encoded<R, F>(&self, f: F) -> Rwhere
    F: FnOnce(&[u8]) -> R,

Convert self to a slice and then invoke the given closure with it.

fn encoded_size(&self) -> usize

Calculates the encoded size.

impl Error for Error

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

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, demand: &mut Demand<'a>)

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

Provides type based access to context intended for error reports.

impl PartialEq<Error> for Error

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

This method tests for self and other values to be equal, and is used by ==.

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

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

impl EncodeLike<Error> for Error

impl Eq for Error

impl StructuralEq for Error

impl StructuralPartialEq for Error