Enum Error

pub enum Error {
    UnfinishedEscape,
    UnclosedSet,
    MissingCharsForBalanced,
    MissingSetForFrontier,
    UnexpectedToken(Token),
    InvalidCaptureRef(u8),
    OpenEndedRange(Token),
}

The crate’s main error type.

Variants

UnfinishedEscape

The input ended with a single % character.

UnclosedSet

The closing bracket ] for a character set is missing.

MissingCharsForBalanced

A balanced pattern %b was present without two characters following it.

MissingSetForFrontier

A frontier pattern %f was present without a character set following it.

UnexpectedToken(Token)

The input contained an unexpected token, such as an extra closing bracket or a quantifier without a leading pattern.

InvalidCaptureRef(u8)

A capture group backreference referenced a group that does not exist.

OpenEndedRange(Token)

A character range in a character set is missing its upper bound. The given token was found instead.

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 PartialEq for Error

fn eq(&self, other: &Error) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Eq for Error

impl StructuralPartialEq for Error