[−][src]Enum join_impl::handler::Handler
Variants
Map(Expr)
Then(Expr)
AndThen(Expr)
Methods
impl Handler
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pub fn new(input: ParseStream) -> Result<Option<Handler>>
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Checks if input ParseStream
next value is a Handler
and then if it's true, attempts to parse it, otherwise returns None
.
Will return Err if ParseStream
must contain Handler
but it can't be parsed.
pub fn is_handler(input: ParseStream) -> bool
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Returns true if next value in input ParseStream
is the definition of Handler
.
Auto Trait Implementations
impl !Send for Handler
impl !Sync for Handler
impl Unpin for Handler
impl UnwindSafe for Handler
impl !RefUnwindSafe for Handler
Blanket Implementations
impl<T, U> Into<U> for T where
U: From<T>,
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U: From<T>,
impl<T> From<T> for T
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impl<T, U> TryFrom<U> for T where
U: Into<T>,
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U: Into<T>,
type Error = Infallible
The type returned in the event of a conversion error.
fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>
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impl<T, U> TryInto<U> for T where
U: TryFrom<T>,
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U: TryFrom<T>,
type Error = <U as TryFrom<T>>::Error
The type returned in the event of a conversion error.
fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>
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impl<T> Borrow<T> for T where
T: ?Sized,
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T: ?Sized,
impl<T> BorrowMut<T> for T where
T: ?Sized,
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T: ?Sized,
fn borrow_mut(&mut self) -> &mut T
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impl<T> Any for T where
T: 'static + ?Sized,
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T: 'static + ?Sized,