Enum Error 

pub enum Error {
    EmptyParens,
    EmptyRegex,
    InvalidClass,
    InvalidEscape(char),
    InvalidRepetition,
    ReTooLong,
    UnbalancedAlt,
    UnbalancedParens,
    UnclosedGroupName(String),
    UnknownGroupQualifier(char),
}

Errors that can be returned by the regex engine

Variants

EmptyParens

Empty parens

EmptyRegex

Empty string used when creating a Regex

InvalidClass

Invalid regex class

InvalidEscape(char)

Invalid escape sequence

InvalidRepetition

Invalid repetition pattern

ReTooLong

The provided regex is too long

UnbalancedAlt

Alternation without a right hand side

UnbalancedParens

Unbalanced parens

UnclosedGroupName(String)

Group name without a closing ‘<’

UnknownGroupQualifier(char)

Invalid group qualifier following (?…)

Trait Implementations

impl Clone for Error

fn clone(&self) -> Error

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

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 From<Error> for Error

fn from(err: Error) -> Self

Converts to this type from the input type.

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