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use postgres;
use std::error::Error as StdError;
use std::fmt;
use std::io;
pub type Result<T> = std::result::Result<T, Error>;
#[derive(Debug)]
pub enum Error {
Any(Box<dyn std::any::Any + Send + 'static>),
Generic(Box<StdError + Send + Sync + 'static>),
Io(io::Error),
Postgres(postgres::Error),
Json(serde_json::Error),
}
impl StdError for Error {}
impl fmt::Display for Error {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
match self {
Error::Any(err) => write!(f, "any error. {:?}", err),
Error::Generic(err) => write!(f, "generic error. {}", err),
Error::Io(err) => write!(f, "io error. {}", err),
Error::Postgres(err) => write!(f, "postgres error. {}", err),
Error::Json(err) => write!(f, "json error. {}", err),
}
}
}
impl From<Box<StdError + Send + Sync + 'static>> for Error {
fn from(err: Box<StdError + Send + Sync + 'static>) -> Error {
Error::Generic(err)
}
}
impl From<io::Error> for Error {
fn from(err: io::Error) -> Error {
Error::Io(err)
}
}
impl From<postgres::Error> for Error {
fn from(err: postgres::Error) -> Error {
Error::Postgres(err)
}
}
impl From<serde_json::Error> for Error {
fn from(err: serde_json::Error) -> Error {
Error::Json(err)
}
}