Enum clap::RegexRef

pub enum RegexRef<'a> {
    RegexSet(Cow<'a, RegexSet>),
    Regex(Cow<'a, Regex>),
}

Available on crate feature regex only.

Contains either a regular expression or a set of them or a reference to one.

See Arg::validator_regex( to set this on an argument.

Variants

RegexSet(Cow<'a, RegexSet>)

Used if the underlying is a regex set

Regex(Cow<'a, Regex>)

Used if the underlying is a regex

Trait Implementations

impl<'a> Clone for RegexRef<'a>

fn clone(&self) -> RegexRef<'a>

Returns a copy of the value.

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

Performs copy-assignment from source.

impl<'a> Debug for RegexRef<'a>

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

Formats the value using the given formatter.

impl<'a> From<&'a Regex> for RegexRef<'a>

fn from(r: &'a Regex) -> Self

Converts to this type from the input type.

impl<'a> From<&'a RegexSet> for RegexRef<'a>

fn from(r: &'a RegexSet) -> Self

Converts to this type from the input type.

impl<'a> From<Regex> for RegexRef<'a>

fn from(r: Regex) -> Self

Converts to this type from the input type.

impl<'a> From<RegexSet> for RegexRef<'a>

fn from(r: RegexSet) -> Self

Converts to this type from the input type.

impl<'a> FromStr for RegexRef<'a>

type Err = Error

The associated error which can be returned from parsing.

fn from_str(s: &str) -> Result<Self, Self::Err>

Parses a string s to return a value of this type.

impl<'a> TryFrom<&'a str> for RegexRef<'a>

type Error = <RegexRef<'a> as FromStr>::Err

The type returned in the event of a conversion error.

fn try_from(r: &'a str) -> Result<Self, Self::Error>

Performs the conversion.