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use thiserror::Error;
#[derive(Debug, Error)]
pub enum Error {
#[error("Invariant violation: {0}")]
InvariantViolation(String),
#[error("Error accessing {0}: {1}")]
IO(String, #[source] std::io::Error),
#[error("Error (de)serializing {0}: {1}")]
BCS(&'static str, #[source] bcs::Error),
#[error("Error (de)serializing {0}: {1}")]
Yaml(String, #[source] serde_yaml::Error),
#[error("Config is missing expected value: {0}")]
Missing(&'static str),
}
pub fn invariant(cond: bool, msg: String) -> Result<(), Error> {
if !cond {
Err(Error::InvariantViolation(msg))
} else {
Ok(())
}
}