Enum Error

pub enum Error {
    ParseError,
    UnclosedOpenParen,
    InvalidRepeat,
    RecursionExceeded,
    LookBehindNotConst,
    TrailingBackslash,
    InvalidEscape,
    UnclosedUnicodeName,
    InvalidHex,
    InvalidCodepointValue,
    InvalidClass,
    UnknownFlag,
    NonUnicodeUnsupported,
    InvalidBackref,
    InnerError(Error),
    StackOverflow,
    BacktrackLimitExceeded,
    // some variants omitted
}

An error for the result of compiling or running a regex.

Variants

ParseError

General parsing error

UnclosedOpenParen

Opening parenthesis without closing parenthesis, e.g. (a|b

InvalidRepeat

Invalid repeat syntax

RecursionExceeded

Pattern too deeply nested

LookBehindNotConst

Look-behind assertion without constant size

TrailingBackslash

Backslash without following character

InvalidEscape

Invalid escape

UnclosedUnicodeName

Unicode escape not closed

InvalidHex

Invalid hex escape

InvalidCodepointValue

Invalid codepoint for hex or unicode escape

InvalidClass

Invalid character class

UnknownFlag

Unknown group flag

NonUnicodeUnsupported

Disabling Unicode not supported

InvalidBackref

Invalid back reference

InnerError(Error)

Regex crate error

StackOverflow

Max stack size exceeded for backtracking while executing regex.

BacktrackLimitExceeded

Max limit for backtracking count exceeded while executing the regex. Configure using RegexBuilder::backtrack_limit.

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, f: &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 StructuralPartialEq for Error