cgp_field

Struct UseField

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pub struct UseField<Tag>(pub PhantomData<Tag>);

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§0: PhantomData<Tag>

Trait Implementations§

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impl<Context, OutTag, Tag, Value> FieldGetter<Context, OutTag> for UseField<Tag>
where Context: HasField<Tag, Value = Value>,

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type Value = Value

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fn get_field(context: &Context, _tag: PhantomData<OutTag>) -> &Value

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impl<Context, OutTag, Tag, Value> MutFieldGetter<Context, OutTag> for UseField<Tag>
where Context: HasFieldMut<Tag, Value = Value>,

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fn get_field_mut(context: &mut Context, _tag: PhantomData<OutTag>) -> &mut Value

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impl<Context, TypeTag, FieldTag, Field> ProvideType<Context, TypeTag> for UseField<FieldTag>
where Context: HasField<FieldTag, Value = Field>,

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type Type = Field

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impl<Context, TypeTag, FieldTag, Field> IsProviderFor<TypeComponent, Context, TypeTag> for UseField<FieldTag>
where Context: HasField<FieldTag, Value = Field>,

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impl<Tag> Freeze for UseField<Tag>

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impl<Tag> RefUnwindSafe for UseField<Tag>
where Tag: RefUnwindSafe,

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impl<Tag> Send for UseField<Tag>
where Tag: Send,

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impl<Tag> Sync for UseField<Tag>
where Tag: Sync,

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impl<Tag> Unpin for UseField<Tag>
where Tag: Unpin,

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impl<Tag> UnwindSafe for UseField<Tag>
where Tag: 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<Getter, Context, Tag> FieldMapper<Context, Tag> for Getter
where Getter: FieldGetter<Context, Tag> + 'static, Tag: 'static,

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fn map_field<T>( context: &Context, tag: PhantomData<Tag>, mapper: impl for<'a> FnOnce(&'a <Getter as FieldGetter<Context, Tag>>::Value) -> &'a T, ) -> &T

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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.