EmptyResolver

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Struct EmptyResolver 

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pub struct EmptyResolver<S>
where
    S: ResolverState,
{ /* private fields */ }
Expand description

A resolver that does not resolve any values.

Every call to Resolver::resolve() returns None. This resolver is useful when expressions do not contain any variables or function calls.

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impl<S, T> Resolver<S, T> for EmptyResolver<S>
where S: ResolverState,

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fn resolve(&self, _name: &str) -> Option<&T>

Auto Trait Implementations§

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impl<S> Freeze for EmptyResolver<S>
where S: Freeze,

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impl<S> RefUnwindSafe for EmptyResolver<S>
where S: RefUnwindSafe,

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impl<S> Send for EmptyResolver<S>
where S: Send,

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impl<S> Sync for EmptyResolver<S>
where S: Sync,

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impl<S> Unpin for EmptyResolver<S>
where S: Unpin,

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impl<S> UnwindSafe for EmptyResolver<S>
where S: UnwindSafe,

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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<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.