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use curl::Error as curl_err; use goauth::error::GOErr as go_err; use protobuf::error::ProtobufError as pb_err; use serde_json::Error as serde_err; use smpl_jwt::error::JwtErr as jwt_err; use std; use std::str::Utf8Error as utf8_err; macro_rules! impl_from { ($type_: ident, $enum_ty: ident) => { impl From<$type_> for BTErr { fn from(e: $type_) -> BTErr { BTErr::$enum_ty(e) } } }; } #[derive(Debug)] pub enum BTErr { GOErr(go_err), CurlErr(curl_err), SerdeErr(serde_err), PBErr(pb_err), JWTErr(jwt_err), UTF8Err(utf8_err), Unknown, } impl_from!(go_err, GOErr); impl_from!(curl_err, CurlErr); impl_from!(serde_err, SerdeErr); impl_from!(pb_err, PBErr); impl_from!(jwt_err, JWTErr); impl_from!(utf8_err, UTF8Err); impl std::fmt::Display for BTErr { fn fmt(&self, f: &mut std::fmt::Formatter) -> std::fmt::Result { match *self { BTErr::GOErr(ref e) => e.fmt(f), BTErr::CurlErr(ref e) => e.fmt(f), BTErr::SerdeErr(ref e) => e.fmt(f), BTErr::PBErr(ref e) => e.fmt(f), BTErr::JWTErr(ref e) => e.fmt(f), BTErr::UTF8Err(ref e) => e.fmt(f), BTErr::Unknown => write!(f, "An unknown error has occured"), } } } impl std::error::Error for BTErr { fn description(&self) -> &str { match *self { BTErr::GOErr(ref e) => e.description(), BTErr::CurlErr(ref e) => e.description(), BTErr::SerdeErr(ref e) => e.description(), BTErr::PBErr(ref e) => e.description(), BTErr::JWTErr(ref e) => e.description(), BTErr::UTF8Err(ref e) => e.description(), BTErr::Unknown => "unknown error", } } }