Enum fancy_regex::Error

pub enum Error {
    ParseError,
    UnclosedOpenParen,
    InvalidRepeat,
    RecursionExceeded,
    LookBehindNotConst,
    TrailingBackslash,
    InvalidEscape(String),
    UnclosedUnicodeName,
    InvalidHex,
    InvalidCodepointValue,
    InvalidClass,
    UnknownFlag(String),
    NonUnicodeUnsupported,
    InvalidBackref,
    InnerError(Error),
    InvalidGroupName,
    InvalidGroupNameBackref(String),
    NamedBackrefOnly,
    TargetNotRepeatable,
    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(String)

Tuple Fields

0: String

Invalid escape

UnclosedUnicodeName

Unicode escape not closed

InvalidHex

Invalid hex escape

InvalidCodepointValue

Invalid codepoint for hex or unicode escape

InvalidClass

Invalid character class

UnknownFlag(String)

Tuple Fields

0: String

Unknown group flag

NonUnicodeUnsupported

Disabling Unicode not supported

InvalidBackref

Invalid back reference

InnerError(Error)

Tuple Fields

0: Error

Regex crate error

InvalidGroupName

Couldn’t parse group name

InvalidGroupNameBackref(String)

Tuple Fields

0: String

Invalid group id in escape sequence

NamedBackrefOnly

Once named groups are used you cannot refer to groups by number

TargetNotRepeatable

Quantifier on lookaround or other zero-width assertion

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)>

The lower-level source of this error, if any.

fn backtrace(&self) -> Option<&Backtrace>

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

Returns a stack backtrace, if available, of where this error occurred.

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