use trace::Error as TraceError; use util::UtilError; use std::fmt::{Display, Formatter, Error as FmtError}; use util::trie::TrieError; /// Client configuration errors. #[derive(Debug)] pub enum Error { /// TraceDB configuration error. Trace(TraceError), /// TrieDB-related error. Trie(TrieError), /// Database error Database(String), /// Util error Util(UtilError), } impl From for Error { fn from(err: TraceError) -> Self { Error::Trace(err) } } impl From for Error { fn from(err: TrieError) -> Self { Error::Trie(err) } } impl From for Error { fn from(err: UtilError) -> Self { Error::Util(err) } } impl From> for Error where Error: From { fn from(err: Box) -> Self { Error::from(*err) } } impl Display for Error { fn fmt(&self, f: &mut Formatter) -> Result<(), FmtError> { match *self { Error::Trace(ref err) => write!(f, "{}", err), Error::Trie(ref err) => write!(f, "{}", err), Error::Util(ref err) => write!(f, "{}", err), Error::Database(ref s) => write!(f, "Database error: {}", s), } } }