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use std::fmt;
use std::error::Error;
#[derive(Clone,Debug,PartialEq)]
pub enum SolventError {
CycleDetected,
NoSuchNode,
}
impl fmt::Display for SolventError {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
match *self {
_ => self.description().fmt(f)
}
}
}
impl Error for SolventError {
fn description(&self) -> &str
{
match *self {
SolventError::CycleDetected => "Cycle Detected",
SolventError::NoSuchNode => "No Such Node",
}
}
fn cause(&self) -> Option<&Error> {
match *self {
_ => None
}
}
}