Struct clap::builder::BoolValueParser

#[non_exhaustive]
pub struct BoolValueParser {}

Implementation for ValueParser::bool

Useful for composing new TypedValueParsers

Implementations

impl BoolValueParser

pub fn new() -> Self

Implementation for ValueParser::bool

Trait Implementations

impl Clone for BoolValueParser

fn clone(&self) -> BoolValueParser

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for BoolValueParser

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

Formats the value using the given formatter.

impl Default for BoolValueParser

fn default() -> Self

Returns the “default value” for a type.

impl TypedValueParser for BoolValueParser

type Value = bool

Argument’s value type

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

Parse the argument value

fn possible_values(
    &self
) -> Option<Box<dyn Iterator<Item = PossibleValue> + '_>>

Reflect on enumerated value properties

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

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 + Send + Sync + 'static>>,

Adapt a TypedValueParser from one value to another

impl Copy for BoolValueParser