serde-duration-ext 0.1.0

Serde support for std::time::Duration and chrono::Duration (chrono feature)
Documentation 
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use std::error::Error as StdError;
use std::fmt::{Display, Formatter, Result as FmtResult};

#[derive(Debug, PartialEq, Eq, Clone)]
pub enum Error {
    Syntax(String),
    UnitNotSupported(String),
    NoUnitProvided,
    NoValueProvided,
    StringDoesNotMatchRegex,
}

impl StdError for Error {}

impl Display for Error {
    fn fmt(&self, f: &mut Formatter) -> FmtResult {
        match self {
            Error::Syntax(err) => err.fmt(f),
            Error::UnitNotSupported(err) => err.fmt(f),
            Error::NoUnitProvided => f.write_str("No unit provided"),
            Error::NoValueProvided => f.write_str("No value provided"),
            Error::StringDoesNotMatchRegex => f.write_str("String does not match regex"),
        }
    }
}

impl serde::de::Error for Error {
    fn custom<T: Display>(msg: T) -> Self {
        Error::Syntax(msg.to_string())
    }
}