use thiserror::Error;

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

#[derive(Error, Debug)]
pub enum Error {
    #[error("error occurred during parse stage: {0}")]
    ParseError(String),
    #[error("error occurred during downgrade stage: {0}")]
    DowngradeError(String),
    #[error("error occurred during evaluation stage: {0}")]
    EvalError(String),
    #[error("unknown error")]
    Unknown,
}