use std::{fmt, io, result};
use tenjin;
use toml;
pub type Result<T> = result::Result<T, Error>;
#[derive(Debug)]
pub enum Error {
ConfigNotFound,
ExternalProcess,
TemplateNotFound(String),
Io(io::Error),
Toml(toml::de::Error),
Tenjin(tenjin::Error),
}
impl From<io::Error> for Error {
fn from(e: io::Error) -> Error {
Error::Io(e)
}
}
impl From<toml::de::Error> for Error {
fn from(e: toml::de::Error) -> Error {
Error::Toml(e)
}
}
impl From<tenjin::Error> for Error {
fn from(e: tenjin::Error) -> Error {
Error::Tenjin(e)
}
}
impl fmt::Display for Error {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
use self::Error::*;
match *self {
ConfigNotFound => write!(f, "no config found"),
ExternalProcess => write!(f, "external process failed"),
TemplateNotFound(ref s) => write!(f, "template `{}` not found", s),
Io(ref e) => e.fmt(f),
Toml(ref e) => e.fmt(f),
Tenjin(ref e) => e.fmt(f),
}
}
}