tendermint 0.40.4

Tendermint is a high-performance blockchain consensus engine that powers Byzantine fault tolerant applications written in any programming language. This crate provides core types for representing information about Tendermint blockchain networks, including chain information types, secret connections, and remote procedure calls (JSON-RPC).
Documentation 
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//! Blocks within the chains of a Tendermint network

mod block_id_flag;
mod commit;
pub mod commit_sig;
pub mod header;
mod height;
mod id;
mod meta;
pub mod parts;
mod round;
pub mod signed_header;
mod size;

use serde::{Deserialize, Serialize};
use tendermint_proto::v0_37::types::Block as RawBlock;

pub use self::{
    block_id_flag::BlockIdFlag,
    commit::*,
    commit_sig::*,
    header::Header,
    height::*,
    id::{Id, ParseId},
    meta::Meta,
    round::*,
    size::Size,
};
use crate::{evidence, prelude::*};

/// Blocks consist of a header, transactions, votes (the commit), and a list of
/// evidence of malfeasance (i.e. signing conflicting votes).
///
/// <https://github.com/cometbft/cometbft/blob/v1.0.0-alpha.1/spec/core/data_structures.md#block>
// Default serialization - all fields serialize; used by /block endpoint
#[derive(Serialize, Deserialize, Clone, Debug, PartialEq, Eq)]
#[non_exhaustive]
#[serde(try_from = "RawBlock", into = "RawBlock")]
pub struct Block {
    /// Block header
    pub header: Header,

    /// Transaction data
    pub data: Vec<Vec<u8>>,

    /// Evidence of malfeasance
    pub evidence: evidence::List,

    /// Last commit, should be `None` for the initial block.
    pub last_commit: Option<Commit>,
}

tendermint_pb_modules! {
    use super::{Block, Header, Commit};
    use crate::{Error, prelude::*};
    use pb::types::Block as RawBlock;

    impl Protobuf<RawBlock> for Block {}

    impl TryFrom<RawBlock> for Block {
        type Error = Error;

        fn try_from(value: RawBlock) -> Result<Self, Self::Error> {
            let header: Header = value.header.ok_or_else(Error::missing_header)?.try_into()?;

            // If last_commit is the default Commit, it is considered nil by Go.
            let last_commit = value
                .last_commit
                .map(TryInto::try_into)
                .transpose()?
                .filter(|c| c != &Commit::default());

            Ok(Block::new(
                header,
                value.data.ok_or_else(Error::missing_data)?.txs,
                value.evidence.map(TryInto::try_into).transpose()?.unwrap_or_default(),
                last_commit,
            ))
        }
    }

    impl From<Block> for RawBlock {
        fn from(value: Block) -> Self {
            use pb::types::Data as RawData;
            RawBlock {
                header: Some(value.header.into()),
                data: Some(RawData { txs: value.data }),
                evidence: Some(value.evidence.into()),
                last_commit: value.last_commit.map(Into::into),
            }
        }
    }
}

impl Block {
    /// Builds a new [`Block`], based on the given [`Header`], data, evidence, and last commit.
    pub fn new(
        header: Header,
        data: Vec<Vec<u8>>,
        evidence: evidence::List,
        last_commit: Option<Commit>,
    ) -> Self {
        Self {
            header,
            data,
            evidence,
            last_commit,
        }
    }

    /// Get header
    pub fn header(&self) -> &Header {
        &self.header
    }

    /// Get data
    pub fn data(&self) -> &Vec<Vec<u8>> {
        &self.data
    }

    /// Get evidence
    pub fn evidence(&self) -> &evidence::List {
        &self.evidence
    }

    /// Get last commit
    pub fn last_commit(&self) -> &Option<Commit> {
        &self.last_commit
    }
}