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use dhall::error::Error as DhallError;
/// Alias for a `Result` with the error type `serde_dhall::Error`.
pub type Result<T> = std::result::Result<T, Error>;
/// Errors that can occur when deserializing Dhall data.
#[derive(Debug)]
pub struct Error(pub(crate) ErrorKind);
#[derive(Debug)]
pub(crate) enum ErrorKind {
Dhall(DhallError),
Deserialize(String),
Serialize(String),
}
impl From<ErrorKind> for Error {
fn from(kind: ErrorKind) -> Error {
Error(kind)
}
}
impl std::fmt::Display for Error {
fn fmt(&self, f: &mut std::fmt::Formatter) -> std::fmt::Result {
match &self.0 {
ErrorKind::Dhall(err) => write!(f, "{}", err),
ErrorKind::Deserialize(err) => write!(f, "{}", err),
ErrorKind::Serialize(err) => write!(f, "{}", err),
}
}
}
impl std::error::Error for Error {}
impl serde::de::Error for Error {
fn custom<T>(msg: T) -> Self
where
T: std::fmt::Display,
{
ErrorKind::Deserialize(msg.to_string()).into()
}
}
impl serde::ser::Error for Error {
fn custom<T>(msg: T) -> Self
where
T: std::fmt::Display,
{
ErrorKind::Serialize(msg.to_string()).into()
}
}
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