protocol 3.4.0

Easy protocol definitions
Documentation 
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use std::{self, fmt, error};

pub type Result<T> = std::result::Result<T, Error>;


#[derive(Debug, Copy, Clone, PartialEq, Eq)]
/// Copy of [TryFromIntError](https://doc.rust-lang.org/std/num/struct.TryFromIntError.html)
/// that works in stable rust
pub struct TryFromIntError { }

impl TryFromIntError {
    fn description(&self) -> &str {
        "out of range integral type conversion attempted"
    }
}

impl fmt::Display for TryFromIntError {
    fn fmt(&self, fmt: &mut fmt::Formatter) -> fmt::Result {
        self.description().fmt(fmt)
    }
}

impl error::Error for TryFromIntError {
    fn description(&self) -> &str {
        self.description()
    }
}

#[derive(Debug, Copy, Clone, PartialEq, Eq)]
/// Copy of [CharTryFromError](https://doc.rust-lang.org/std/char/struct.CharTryFromError.html)
/// that works in stable rust
pub struct CharTryFromError { }

impl CharTryFromError {
    fn description(&self) -> &str {
         "converted integer out of range for `char`"
    }
}

impl fmt::Display for CharTryFromError {
    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
       self.description().fmt(f)
    }
}

impl error::Error for CharTryFromError {
    fn description(&self) -> &str {
        self.description()
    }
}

error_chain! {
    types {
        Error, ErrorKind, ResultExt;
    }

    foreign_links {
        Io(std::io::Error);
        FromUtf8(std::string::FromUtf8Error);
        FromNulError(std::ffi::NulError);
        TryFromIntError(TryFromIntError);
        CharTryFromError(CharTryFromError);

        UuidParseError(::uuid::Error) #[cfg(feature = "uuid")];
    }

    errors {
        UnknownPacketId {
            description("unknown packet identifier")
            display("unknown packet identifier")
        }

        UnknownEnumDiscriminator(type_name: &'static str, discriminator: String) {
            description("received unknown enum discriminator")
            display("received unknown enum discriminator '{}' for type '{}'", discriminator, type_name)
        }

        /// A parcel type was read that has not been implemented yet.
        UnimplementedParcel(type_name: &'static str) {
            description("unimplemented parcel")
            display("unimplemented parcel type '{}'", type_name)
        }
    }
}