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use std::{error, fmt};
#[derive(Debug, PartialEq)]
pub enum MoneyError {
InvalidCurrency,
InvalidAmount,
InvalidRatio,
}
impl fmt::Display for MoneyError {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
match *self {
MoneyError::InvalidCurrency => write!(f, "Currency was not valid"),
MoneyError::InvalidAmount => write!(f, "Amount not parseable"),
MoneyError::InvalidRatio => write!(f, "Ratio was not valid"),
}
}
}
impl error::Error for MoneyError {
fn description(&self) -> &str {
match *self {
MoneyError::InvalidCurrency => "Currency was not valid",
MoneyError::InvalidAmount => "Amount not parseable",
MoneyError::InvalidRatio => "Ratio was not valid",
}
}
}
impl From<std::num::ParseIntError> for MoneyError {
fn from(_err: std::num::ParseIntError) -> MoneyError {
MoneyError::InvalidAmount
}
}