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use verifier;
use std::error::Error as StdError;
use std::fmt;
#[derive(Debug, PartialEq, Eq)]
pub enum CtonError {
InvalidInput,
Verifier(verifier::Error),
ImplLimitExceeded,
CodeTooLarge,
}
pub type CtonResult = Result<(), CtonError>;
impl fmt::Display for CtonError {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
match *self {
CtonError::Verifier(ref e) => write!(f, "Verifier error: {}", e),
CtonError::InvalidInput |
CtonError::ImplLimitExceeded |
CtonError::CodeTooLarge => f.write_str(self.description()),
}
}
}
impl StdError for CtonError {
fn description(&self) -> &str {
match *self {
CtonError::InvalidInput => "Invalid input code",
CtonError::Verifier(ref e) => &e.message,
CtonError::ImplLimitExceeded => "Implementation limit exceeded",
CtonError::CodeTooLarge => "Code for function is too large",
}
}
fn cause(&self) -> Option<&StdError> {
match *self {
CtonError::Verifier(ref e) => Some(e),
CtonError::InvalidInput |
CtonError::ImplLimitExceeded |
CtonError::CodeTooLarge => None,
}
}
}
impl From<verifier::Error> for CtonError {
fn from(e: verifier::Error) -> CtonError {
CtonError::Verifier(e)
}
}