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use std;
use std::fmt::{self, Display};
use eetf;
use serde::{de, ser};
pub type Result<T> = std::result::Result<T, Error>;
#[derive(Clone, Debug, PartialEq)]
pub enum Error {
Message(String),
DecodeError(String),
EncodeError(String),
TypeHintsRequired,
ExpectedBoolean,
InvalidBoolean,
ExpectedFixInteger,
ExpectedFloat,
ExpectedChar,
ExpectedBinary,
Utf8DecodeError,
ExpectedNil,
ExpectedList,
ExpectedTuple,
WrongTupleLength,
ExpectedMap,
ExpectedAtom,
IntegerConvertError,
FloatConvertError,
TooManyItems,
MisSizedVariantTuple,
ExpectedAtomOrTuple,
}
impl ser::Error for Error {
fn custom<T: Display>(msg: T) -> Self {
Error::Message(msg.to_string())
}
}
impl de::Error for Error {
fn custom<T: Display>(msg: T) -> Self {
Error::Message(msg.to_string())
}
}
impl Display for Error {
fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
formatter.write_str(std::error::Error::description(self))
}
}
impl std::error::Error for Error {
fn description(&self) -> &str {
match *self {
Error::Message(ref msg) => msg,
Error::DecodeError(_) => "Decode error",
Error::EncodeError(ref msg) => msg,
Error::TypeHintsRequired => "Type Hints are required for deserializing eetf",
Error::ExpectedBoolean => "Expected boolean, got something else",
Error::InvalidBoolean => "Invalid boolean",
Error::ExpectedFixInteger => "Expected fix integer, got something else",
Error::ExpectedFloat => "Expected float integer, got something else",
Error::ExpectedChar => "Expected string of one character, got something else",
Error::ExpectedBinary => "Expected binary, got something else",
Error::Utf8DecodeError => "Error decoding UTF8 from binary",
Error::ExpectedNil => "Expected nil, got something else",
Error::ExpectedList => "Expected list, got something else",
Error::ExpectedTuple => "Expected tuple, got something else",
Error::WrongTupleLength => "Tuple was wrong length",
Error::ExpectedMap => "Expected map, got something else",
Error::ExpectedAtom => "Expected atom, got something else",
Error::IntegerConvertError => "Could not convert integer without overflow",
Error::FloatConvertError => "Could not convert float without overflow",
Error::TooManyItems => "Too many items when deserializing sequence",
Error::MisSizedVariantTuple => "Was expecting a tuple of an atom and element",
Error::ExpectedAtomOrTuple => "Was expecting an atom or a tuple",
}
}
}
impl From<eetf::DecodeError> for Error {
fn from(err: eetf::DecodeError) -> Error {
use std::error::Error;
self::Error::DecodeError(err.description().to_string())
}
}