size-limit 0.1.0

range limit checker
Documentation 
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use std::fmt::Display;

#[derive(Debug)]
pub enum Error {
    TooLarge { require: usize, get: usize },
    TooSmall { require: usize, get: usize },
    FixSize { require: usize, get: usize },
    Custom(Box<dyn std::error::Error>),
}

impl std::error::Error for Error {}

impl Display for Error {
    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
        match self {
            Error::TooLarge { require, get } => write!(
                f,
                "Out of Length Limit: require < {} but get {}",
                require, get
            ),
            Error::TooSmall { require, get } => write!(
                f,
                "Out of Length Limit: require > {} but get {}",
                require, get
            ),
            Error::FixSize { require, get } => {
                write!(f, "require Size == {} but get {}", require, get)
            }
            Error::Custom(err) => write!(f,"custom Error: {}",err),
        }
    }
}