#[non_exhaustive]pub struct NonEmptyStringValueParser {}
Expand description
Parse non-empty string values
See also:
§Example
Usage:
let mut cmd = clap::Command::new("raw")
.arg(
clap::Arg::new("append")
.value_parser(clap::builder::NonEmptyStringValueParser::new())
.required(true)
);
let m = cmd.try_get_matches_from_mut(["cmd", "true"]).unwrap();
let port: &String = m.get_one("append")
.expect("required");
assert_eq!(port, "true");
Semantics:
let value_parser = clap::builder::NonEmptyStringValueParser::new();
assert_eq!(value_parser.parse_ref(&cmd, arg, OsStr::new("random")).unwrap(), "random");
assert!(value_parser.parse_ref(&cmd, arg, OsStr::new("")).is_err());
Implementations§
source§impl NonEmptyStringValueParser
impl NonEmptyStringValueParser
sourcepub fn new() -> NonEmptyStringValueParser
pub fn new() -> NonEmptyStringValueParser
Parse non-empty string values
Trait Implementations§
source§impl Clone for NonEmptyStringValueParser
impl Clone for NonEmptyStringValueParser
source§fn clone(&self) -> NonEmptyStringValueParser
fn clone(&self) -> NonEmptyStringValueParser
Returns a copy of the value. Read more
1.0.0 · source§fn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
Performs copy-assignment from
source
. Read moresource§impl Debug for NonEmptyStringValueParser
impl Debug for NonEmptyStringValueParser
source§impl Default for NonEmptyStringValueParser
impl Default for NonEmptyStringValueParser
source§fn default() -> NonEmptyStringValueParser
fn default() -> NonEmptyStringValueParser
Returns the “default value” for a type. Read more
source§impl TypedValueParser for NonEmptyStringValueParser
impl TypedValueParser for NonEmptyStringValueParser
source§fn parse_ref(
&self,
cmd: &Command,
arg: Option<&Arg>,
value: &OsStr,
) -> Result<<NonEmptyStringValueParser as TypedValueParser>::Value, Error>
fn parse_ref( &self, cmd: &Command, arg: Option<&Arg>, value: &OsStr, ) -> Result<<NonEmptyStringValueParser as TypedValueParser>::Value, Error>
Parse the argument value Read more
source§fn parse_ref_(
&self,
cmd: &Command,
arg: Option<&Arg>,
value: &OsStr,
_source: ValueSource,
) -> Result<Self::Value, Error>
fn parse_ref_( &self, cmd: &Command, arg: Option<&Arg>, value: &OsStr, _source: ValueSource, ) -> Result<Self::Value, Error>
Parse the argument value Read more
source§fn parse(
&self,
cmd: &Command,
arg: Option<&Arg>,
value: OsString,
) -> Result<Self::Value, Error>
fn parse( &self, cmd: &Command, arg: Option<&Arg>, value: OsString, ) -> Result<Self::Value, Error>
Parse the argument value Read more
source§fn parse_(
&self,
cmd: &Command,
arg: Option<&Arg>,
value: OsString,
_source: ValueSource,
) -> Result<Self::Value, Error>
fn parse_( &self, cmd: &Command, arg: Option<&Arg>, value: OsString, _source: ValueSource, ) -> Result<Self::Value, Error>
Parse the argument value Read more
source§fn possible_values(
&self,
) -> Option<Box<dyn Iterator<Item = PossibleValue> + '_>>
fn possible_values( &self, ) -> Option<Box<dyn Iterator<Item = PossibleValue> + '_>>
Reflect on enumerated value properties Read more
source§fn map<T, F>(self, func: F) -> MapValueParser<Self, F>
fn map<T, F>(self, func: F) -> MapValueParser<Self, F>
Adapt a
TypedValueParser
from one value to another Read moreimpl Copy for NonEmptyStringValueParser
Auto Trait Implementations§
impl Freeze for NonEmptyStringValueParser
impl RefUnwindSafe for NonEmptyStringValueParser
impl Send for NonEmptyStringValueParser
impl Sync for NonEmptyStringValueParser
impl Unpin for NonEmptyStringValueParser
impl UnwindSafe for NonEmptyStringValueParser
Blanket Implementations§
source§impl<T> BorrowMut<T> for Twhere
T: ?Sized,
impl<T> BorrowMut<T> for Twhere
T: ?Sized,
source§fn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more
source§impl<T> CloneToUninit for Twhere
T: Clone,
impl<T> CloneToUninit for Twhere
T: Clone,
source§unsafe fn clone_to_uninit(&self, dst: *mut T)
unsafe fn clone_to_uninit(&self, dst: *mut T)
🔬This is a nightly-only experimental API. (
clone_to_uninit
)source§impl<I> IntoResettable<ValueParser> for Iwhere
I: Into<ValueParser>,
impl<I> IntoResettable<ValueParser> for Iwhere
I: Into<ValueParser>,
source§fn into_resettable(self) -> Resettable<ValueParser>
fn into_resettable(self) -> Resettable<ValueParser>
Convert to the intended resettable type