Enum Error 

pub enum Error {
    Dung(Error),
    AudienceTooLarge {
        values: usize,
        limit: usize,
    },
    ArgumentNotFound(String),
    ApxParse {
        line: usize,
        reason: String,
    },
}

Errors produced by VAF operations.

Variants

Dung(Error)

Wrapped error from the underlying Dung framework operations.

AudienceTooLarge

objectively_accepted / subjectively_accepted bail out when the audience contains too many distinct values for tractable enumeration of all linear extensions of the partial order. The hard limit is 6 values (= 720 linear extensions in the worst case).

Fields

values: usize

Number of distinct values in the audience.

limit: usize

Hard cap on values past which we refuse to enumerate.

ArgumentNotFound(String)

An argument referenced by ValueAssignment::promote or by an attack edge is not registered in the underlying framework.

ApxParse

APX text input failed to parse (Phase 3).

Fields

line: usize

1-indexed line number where parsing failed.

reason: String

What went wrong.

Trait Implementations

impl Debug for Error

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Display for Error

fn fmt(&self, __formatter: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Error for Error

fn source(&self) -> Option<&(dyn Error + 'static)>

Returns the lower-level source of this error, if any.

fn description(&self) -> &str

👎Deprecated since 1.42.0: use the Display impl or to_string()

fn cause(&self) -> Option<&dyn Error>

👎Deprecated since 1.33.0: replaced by Error::source, which can support downcasting

fn provide<'a>(&'a self, request: &mut Request<'a>)

🔬This is a nightly-only experimental API. (error_generic_member_access)

Provides type-based access to context intended for error reports.

impl From<Error> for Error

fn from(source: Error) -> Self

Converts to this type from the input type.