tendermint 0.6.0

Tendermint is a high-performance blockchain consensus engine that powers Byzantine fault tolerant applications written in any programming language. This crate provides types for representing information about Tendermint blockchain networks, including chain IDs, block IDs, and block heights.
Documentation 
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use failure::*;

pub trait ConsensusMessage {
    fn validate_basic(&self) -> Result<(), ValidationError>;
}

pub struct ValidationError(ValidationErrorKind);

/// Kinds of validation errors
#[derive(Copy, Clone, Eq, PartialEq, Debug, Fail)]
pub enum ValidationErrorKind {
    #[fail(display = "invalid Type")]
    InvalidMessageType,
    #[fail(display = "consensus message is missing")]
    MissingConsensusMessage,
    #[fail(display = "negative height")]
    NegativeHeight,
    #[fail(display = "negative round")]
    NegativeRound,
    #[fail(display = "negative POLRound (exception: -1)")]
    NegativePOLRound,
    #[fail(display = "negative ValidatorIndex")]
    NegativeValidatorIndex,
    #[fail(display = "expected ValidatorAddress size to be 20 bytes")]
    InvalidValidatorAddressSize,
    #[fail(display = "Wrong hash: expected Hash size to be 32 bytes")]
    InvalidHashSize,
    #[fail(display = "negative total")]
    NegativeTotal,
}

impl ToString for ValidationError {
    fn to_string(&self) -> String {
        self.0.to_string()
    }
}

impl From<ValidationErrorKind> for ValidationError {
    fn from(kind: ValidationErrorKind) -> Self {
        ValidationError(kind)
    }
}