Struct clap::builder::TryMapValueParser

pub struct TryMapValueParser<P, F> { /* private fields */ }

Adapt a TypedValueParser from one value to another

See TypedValueParser::try_map

Trait Implementations

impl<P, F> Clone for TryMapValueParser<P, F>where P: Clone, F: Clone,

fn clone(&self) -> TryMapValueParser<P, F>

Returns a copy of the value.

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

Performs copy-assignment from source.

impl<P, F> Debug for TryMapValueParser<P, F>where P: Debug, F: Debug,

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

Formats the value using the given formatter.

impl<P, F, T, E> TypedValueParser for TryMapValueParser<P, F>where P: TypedValueParser, <P as TypedValueParser>::Value: Send + Sync + Clone, F: Fn(<P as TypedValueParser>::Value) -> Result<T, E> + Clone + Send + Sync + 'static, T: Send + Sync + Clone, E: Into<Box<dyn Error + Sync + Send + 'static, Global>>,

type Value = T

Argument’s value type

fn parse_ref( &self, cmd: &Command, arg: Option<&Arg>, value: &OsStr ) -> Result<<TryMapValueParser<P, F> as TypedValueParser>::Value, Error<RichFormatter>>

Parse the argument value

fn possible_values( &self ) -> Option<Box<dyn Iterator<Item = PossibleValue>, Global>>

Reflect on enumerated value properties

fn parse( &self, cmd: &Command, arg: Option<&Arg>, value: OsString ) -> Result<Self::Value, Error<RichFormatter>>

Parse the argument value

fn map<T, F>(self, func: F) -> MapValueParser<Self, F>where T: Send + Sync + Clone, F: Fn(Self::Value) -> T + Clone,

Adapt a TypedValueParser from one value to another

fn try_map<T, E, F>(self, func: F) -> TryMapValueParser<Self, F>where F: Fn(Self::Value) -> Result<T, E> + Clone + Send + Sync + 'static, T: Send + Sync + Clone, E: Into<Box<dyn Error + Sync + Send + 'static, Global>>,

Adapt a TypedValueParser from one value to another