1use alloc::string::String;
 2
 3use thiserror::Error;
 4
 5use crate::merkle::MerkleError;
 6
 7#[derive(Debug, Error)]
 8pub enum MmrError {
 9    #[error("mmr does not contain position {0}")]
10    PositionNotFound(usize),
11    #[error("mmr peaks are invalid: {0}")]
12    InvalidPeaks(String),
13    #[error(
14        "mmr peak does not match the computed merkle root of the provided authentication path"
15    )]
16    PeakPathMismatch,
17    #[error("requested peak index is {peak_idx} but the number of peaks is {peaks_len}")]
18    PeakOutOfBounds { peak_idx: usize, peaks_len: usize },
19    #[error("invalid mmr update")]
20    InvalidUpdate,
21    #[error("mmr does not contain a peak with depth {0}")]
22    UnknownPeak(u8),
23    #[error("invalid merkle path")]
24    InvalidMerklePath(#[source] MerkleError),
25    #[error("merkle root computation failed")]
26    MerkleRootComputationFailed(#[source] MerkleError),
27}