pub enum Either<L, R> {
    Left(L),
    Right(R),
}
Expand description

Either one component or another.

This is not meant to be used as a general purpose Either type. It is only meant to be used for parsing.

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Left(L)

The first possible component.

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Right(R)

The second possible component.

Trait Implementations§

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impl<L: TokenParse, R: TokenParse> TokenParse for Either<L, R>

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type Intermediate = Either<<L as TokenParse>::Intermediate, <R as TokenParse>::Intermediate>

An intermediate to hold the match before it is converted to the actual component.
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fn match_( m_token: Option<&Token>, span: Span ) -> Result<Self::Intermediate, ParseErr>

Tries to match the next token to the given component, if possible. Read more
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fn convert(imed: Self::Intermediate, span: Span) -> Result<Self, ParseErr>

Parses the intermediate into the given component, raising an error if conversion fails.

Auto Trait Implementations§

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impl<L, R> Freeze for Either<L, R>
where L: Freeze, R: Freeze,

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impl<L, R> RefUnwindSafe for Either<L, R>

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impl<L, R> Send for Either<L, R>
where L: Send, R: Send,

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impl<L, R> Sync for Either<L, R>
where L: Sync, R: Sync,

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impl<L, R> Unpin for Either<L, R>
where L: Unpin, R: Unpin,

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impl<L, R> UnwindSafe for Either<L, R>
where L: UnwindSafe, R: UnwindSafe,

Blanket Implementations§

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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, U> Into<U> for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<S> Parse for S
where S: TokenParse,

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fn parse(parser: &mut Parser) -> Result<S, ParseErr>

Attempt to convert the next sequence of tokens in the parser’s state into a component. Read more
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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.
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impl<V, T> VZip<V> for T
where V: MultiLane<T>,

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fn vzip(self) -> V