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use std::error;
use std::fmt::{self, Display};
use serde::{ser, de};
use token::Token;
#[derive(Clone, PartialEq, Debug)]
pub enum Error {
Message(String),
InvalidName(&'static str),
UnexpectedToken(Token<'static>),
EndOfTokens,
}
impl ser::Error for Error {
fn custom<T: Display>(msg: T) -> Error {
Error::Message(msg.to_string())
}
}
impl de::Error for Error {
fn custom<T: Display>(msg: T) -> Error {
Error::Message(msg.to_string())
}
}
impl fmt::Display for Error {
fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
match *self {
Error::Message(ref msg) => formatter.write_str(msg),
Error::InvalidName(name) => write!(formatter, "invalid name `{}`", name),
Error::UnexpectedToken(_) => formatter.write_str("unexpected token"),
Error::EndOfTokens => formatter.write_str("end of tokens"),
}
}
}
impl error::Error for Error {
fn description(&self) -> &str {
match *self {
Error::Message(ref msg) => msg,
Error::InvalidName(_) => "invalid name",
Error::UnexpectedToken(_) => "unexpected token",
Error::EndOfTokens => "end of tokens",
}
}
}