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use thiserror::Error;
pub type Result<T, E = ProtocolError> = ::std::result::Result<T, E>;
#[derive(Debug, Error)]
pub enum ProtocolError {
#[error("an io error occurred")]
Io(#[source] std::io::Error),
#[error("invalid message: {}", string)]
InvalidMessage {
string: String,
#[source]
cause: MessageParseError,
},
}
impl From<std::io::Error> for ProtocolError {
fn from(e: std::io::Error) -> ProtocolError {
ProtocolError::Io(e)
}
}
#[derive(Debug, Error)]
pub enum MessageParseError {
#[error("empty message")]
EmptyMessage,
#[error("invalid command")]
InvalidCommand,
#[error("invalid mode string: {}", string)]
InvalidModeString {
string: String,
#[source]
cause: ModeParseError,
},
#[error("invalid {} subcommand: {}", cmd, sub)]
InvalidSubcommand {
cmd: &'static str,
sub: String,
},
}
#[derive(Debug, Error)]
pub enum ModeParseError {
#[error("invalid mode modifier: {}", modifier)]
InvalidModeModifier {
modifier: char,
},
#[error("missing mode modifier")]
MissingModeModifier,
}