Struct Parsed 

pub struct Parsed<T>(pub T);

Any FromStr type as a value: the text is parsed with str::parse, and its error becomes the invalid value’s cause.

For a type from another crate, which can implement neither FromArg here nor derive ValueEnum (a strum enum, say).

use winnow_args::FromArg;
use winnow_args::value::Parsed;

let Parsed(ip) = Parsed::<std::net::Ipv4Addr>::from_arg("127.0.0.1".into())?;
assert!(ip.is_loopback());
assert!(Parsed::<std::net::Ipv4Addr>::from_arg("localhost".into()).is_err());

Tuple Fields

0: T

Trait Implementations

impl<T: Clone> Clone for Parsed<T>

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<T: Copy> Copy for Parsed<T>

impl<T: Debug> Debug for Parsed<T>

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

Formats the value using the given formatter.

impl<T: Default> Default for Parsed<T>

fn default() -> Self

Returns the “default value” for a type.

impl<T: Eq> Eq for Parsed<T>

impl<T> FromArg for Parsed<T>

where T: FromStr, T::Err: Into<BoxError>,

fn from_arg(value: &BStr) -> Result<Self, BoxError>

Convert one value.

const CHOICES: &'static [&'static str] = _

The values accepted, when there is a fixed set: help lists them as [possible values: …]. Empty by default; #[derive(ValueEnum)] fills it with each visible variant’s name.

const HINT: Hint = crate::complete::Hint::Nothing

What the value is, for the shell that completes it, when a field states no hint. Nothing a shell knows by default: a number, an address, a type of the program. A PathBuf, a String and an OsString are a file: a word is one more often than not, and a shell that offers files stops no other word from being typed.

impl<T: Hash> Hash for Parsed<T>

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl<T: Ord> Ord for Parsed<T>

fn cmp(&self, other: &Self) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

fn clamp_to<R>(self, range: R) -> Self

where Self: Sized, R: ClampBounds<Self>,

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

Restrict a value to a certain range.

impl<T: PartialEq> PartialEq for Parsed<T>

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

Equality operator ==.

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

Inequality operator !=.

impl<T: PartialOrd> PartialOrd for Parsed<T>

fn partial_cmp(&self, other: &Self) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

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

Tests less than (for self and other) and is used by the < operator.

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

Tests less than or equal to (for self and other) and is used by the <= operator.

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

Tests greater than (for self and other) and is used by the > operator.

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

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl<T: PartialEq> StructuralPartialEq for Parsed<T>