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use std::error::Error;
use std::fmt;
#[derive(Clone, Debug, PartialEq)]
pub enum SolventError {
/// A cycle has been detected
CycleDetected,
NoSuchNode,
}
impl fmt::Display for SolventError {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
match *self {
SolventError::CycleDetected => write!(f, "Cycle Detected"),
SolventError::NoSuchNode => write!(f, "No Such Node"),
}
}
}
impl Error for SolventError {}