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use std::error;
use std::fmt;
use std::io;
use std::num;
use std::str;
use std::string;
#[derive(Debug)]
pub enum MemcacheError {
BadURL(String),
Io(io::Error),
FromUtf8(string::FromUtf8Error),
#[cfg(feature = "tls")]
OpensslError(openssl::ssl::HandshakeError<std::net::TcpStream>),
ParseIntError(num::ParseIntError),
ParseFloatError(num::ParseFloatError),
ParseBoolError(str::ParseBoolError),
ClientError(String),
ServerError(u16),
}
impl fmt::Display for MemcacheError {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
match *self {
MemcacheError::BadURL(ref s) => s.fmt(f),
MemcacheError::Io(ref err) => err.fmt(f),
MemcacheError::FromUtf8(ref err) => err.fmt(f),
#[cfg(feature = "tls")]
MemcacheError::OpensslError(ref err) => err.fmt(f),
MemcacheError::ParseIntError(ref err) => err.fmt(f),
MemcacheError::ParseFloatError(ref err) => err.fmt(f),
MemcacheError::ParseBoolError(ref err) => err.fmt(f),
MemcacheError::ClientError(ref s) => s.fmt(f),
MemcacheError::ServerError(r) => write!(f, "ServerError: {}", r),
}
}
}
impl error::Error for MemcacheError {
fn description(&self) -> &str {
match *self {
MemcacheError::BadURL(ref s) => s.as_str(),
MemcacheError::Io(ref err) => err.description(),
MemcacheError::FromUtf8(ref err) => err.description(),
#[cfg(feature = "tls")]
MemcacheError::OpensslError(ref err) => err.description(),
MemcacheError::ParseIntError(ref err) => err.description(),
MemcacheError::ParseFloatError(ref err) => err.description(),
MemcacheError::ParseBoolError(ref err) => err.description(),
MemcacheError::ClientError(ref s) => s.as_str(),
MemcacheError::ServerError(_) => "ServerError",
}
}
fn source(&self) -> Option<&(dyn error::Error + 'static)> {
match *self {
MemcacheError::BadURL(_) => None,
MemcacheError::Io(ref err) => err.source(),
MemcacheError::FromUtf8(ref err) => err.source(),
#[cfg(feature = "tls")]
MemcacheError::OpensslError(ref err) => err.source(),
MemcacheError::ParseIntError(ref err) => err.source(),
MemcacheError::ParseFloatError(ref err) => err.source(),
MemcacheError::ParseBoolError(ref err) => err.source(),
MemcacheError::ClientError(_) => None,
MemcacheError::ServerError(_) => None,
}
}
}
impl From<io::Error> for MemcacheError {
fn from(err: io::Error) -> MemcacheError {
MemcacheError::Io(err)
}
}
impl From<string::FromUtf8Error> for MemcacheError {
fn from(err: string::FromUtf8Error) -> MemcacheError {
MemcacheError::FromUtf8(err)
}
}
#[cfg(feature = "tls")]
impl From<openssl::error::ErrorStack> for MemcacheError {
fn from(err: openssl::error::ErrorStack) -> MemcacheError {
MemcacheError::OpensslError(openssl::ssl::HandshakeError::<std::net::TcpStream>::from(err))
}
}
#[cfg(feature = "tls")]
impl From<openssl::ssl::HandshakeError<std::net::TcpStream>> for MemcacheError {
fn from(err: openssl::ssl::HandshakeError<std::net::TcpStream>) -> MemcacheError {
MemcacheError::OpensslError(err)
}
}
impl From<num::ParseIntError> for MemcacheError {
fn from(err: num::ParseIntError) -> MemcacheError {
MemcacheError::ParseIntError(err)
}
}
impl From<num::ParseFloatError> for MemcacheError {
fn from(err: num::ParseFloatError) -> MemcacheError {
MemcacheError::ParseFloatError(err)
}
}
impl From<str::ParseBoolError> for MemcacheError {
fn from(err: str::ParseBoolError) -> MemcacheError {
MemcacheError::ParseBoolError(err)
}
}
impl From<String> for MemcacheError {
fn from(s: String) -> MemcacheError {
return MemcacheError::ClientError(s);
}
}
impl From<u16> for MemcacheError {
fn from(code: u16) -> MemcacheError {
return MemcacheError::ServerError(code);
}
}