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DeriveContext

trellis_core

Struct DeriveContext 

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pub struct DeriveContext<'graph, C = ()> { /* private fields */ }
Expand description

Read-only context passed to pure derived node computations.

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impl<'graph, C> DeriveContext<'graph, C>

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pub fn input<T>(&self, input: InputNode<T>) -> Result<&'graph T, DeriveError>
where T: Clone + PartialEq + Send + Sync + 'static,

Reads a declared input dependency.

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pub fn derived<T>( &self, derived: DerivedNode<T>, ) -> Result<&'graph T, DeriveError>
where T: Clone + PartialEq + Send + Sync + 'static,

Reads a declared derived dependency.

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impl<'graph, C = ()> !RefUnwindSafe for DeriveContext<'graph, C>

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impl<'graph, C = ()> !UnwindSafe for DeriveContext<'graph, C>

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impl<'graph, C> Freeze for DeriveContext<'graph, C>

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impl<'graph, C> Send for DeriveContext<'graph, C>

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impl<'graph, C> Sync for DeriveContext<'graph, C>

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impl<'graph, C> Unpin for DeriveContext<'graph, C>

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impl<'graph, C> UnsafeUnpin for DeriveContext<'graph, C>

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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.