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RunDrop

structural::field::ownership

Struct RunDrop 

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pub struct RunDrop<'a, T> { /* private fields */ }
Expand description

A guard that drops the value that a mutable reference points when it is dropped.

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impl<'a, T> RunDrop<'a, T>

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pub unsafe fn new(mutref: &'a mut T) -> Self

Constructs this RunDrop.

§Safety

In the destructor for this type, this drops the value that the mutable reference points to.

Once the destructor for this type runs,the pointed-to value must not be used again, that includes the destructor for the value running.

§Drop order

Remember that variables on the stack are dropped in the opposite order than they are declared.

In this example:

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let a=Foo;
let b=Bar;
let c=Baz;

c gets dropped first,then b, then a.

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pub unsafe fn get_mut(&mut self) -> &mut T

Reborrows the wrapped mutable reference.

§Safety

The returned references must not be mutated, only passed to accessor trait (declared in structural) methods for moving out fields .

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impl<'a, T> Drop for RunDrop<'a, T>

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fn drop(&mut self)

Executes the destructor for this type. Read more

Auto Trait Implementations§

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impl<'a, T> Freeze for RunDrop<'a, T>

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impl<'a, T> RefUnwindSafe for RunDrop<'a, T>
where T: RefUnwindSafe,

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impl<'a, T> Send for RunDrop<'a, T>
where T: Send,

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impl<'a, T> Sync for RunDrop<'a, T>
where T: Sync,

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impl<'a, T> Unpin for RunDrop<'a, T>

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impl<'a, T> UnsafeUnpin for RunDrop<'a, T>

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impl<'a, T> !UnwindSafe for RunDrop<'a, T>

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<This> EnumExt for This
where This: ?Sized,

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fn as_variant<V>( &self, vari: TStr<V>, ) -> Result<&VariantProxy<Self, TStr<V>>, &Self>
where Self: IsVariant<TStr<V>>,

Fallibly converts a reference to an enum into a reference of a VariantProxy of some variant. Read more
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fn as_mut_variant<V>( &mut self, vari: TStr<V>, ) -> Result<&mut VariantProxy<Self, TStr<V>>, &mut Self>
where Self: IsVariant<TStr<V>>,

Fallibly converts a mutable reference to an enum into a mutable reference of a VariantProxy of some variant. Read more
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unsafe fn as_raw_mut_variant<V>( this: *mut Self, vari: TStr<V>, ) -> Result<*mut VariantProxy<Self, TStr<V>>, *mut Self>
where Self: IsVariant<TStr<V>>,

Fallibly converts a raw pointer to an enum into a raw pointer of a VariantProxy of some variant. Read more
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fn into_variant<V>( self, vari: TStr<V>, ) -> Result<VariantProxy<Self, TStr<V>>, Self>
where Self: IsVariant<TStr<V>> + Sized,

Fallibly converts an enum into a VariantProxy of some variant. 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<This, T> IntoStructural<T> for This
where T: FromStructural<This>,

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fn into_structural(self) -> T

Performs the conversion
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impl<T> SelfOps for T
where T: ?Sized,

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const T: PhantomData<fn() -> Self> = PhantomData

Represents Self by using a VariantPhantom, using the syntax Type::T to pass it in methods with _:VariantPhantom<T> parameters. Read more
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const T_D: PhantomData<Self> = PhantomData

Represents Self by using a VariantDropPhantom,for specialized cases. Read more
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fn assert_ty(self, _other: PhantomData<fn() -> Self>) -> Self
where Self: Sized,

Asserts that other is the same type as self.
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fn assert_ty_ref(&self, _other: PhantomData<fn() -> Self>) -> &Self
where Self: Sized,

Asserts that other is the same type as self.
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fn assert_ty_mut(&mut self, _other: PhantomData<fn() -> Self>) -> &mut Self
where Self: Sized,

Asserts that other is the same type as self.
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fn ty_(&self) -> PhantomData<fn() -> Self>

Equivalent to SelfOps::T,as a method. Read more
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fn ty_d(&self) -> PhantomData<Self>

Equivalent to Self::ty_,for specialized cases. Read more
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fn ty_inv(&self) -> PhantomData<fn(Self) -> Self>

Equivalent to Self::ty_ with an invariant type.
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fn ty_inv_ref(&self) -> PhantomData<Cell<&Self>>

Equivalent to Self::ty_ with an invariant lifetime.
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fn eq_id(&self, other: &Self) -> bool

Identity comparison to another value of the same type. Read more
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fn piped<F, U>(self, f: F) -> U
where F: FnOnce(Self) -> U, Self: Sized,

Emulates the pipeline operator,allowing method syntax in more places. Read more
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fn piped_ref<'a, F, U>(&'a self, f: F) -> U
where F: FnOnce(&'a Self) -> U,

The same as piped except that the function takes &Self Useful for functions that take &Self instead of Self. Read more
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fn piped_mut<'a, F, U>(&'a mut self, f: F) -> U
where F: FnOnce(&'a mut Self) -> U,

The same as piped except that the function takes &mut Self. Useful for functions that take &mut Self instead of Self.
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fn mutated<F>(self, f: F) -> Self
where F: FnOnce(&mut Self), Self: Sized,

Mutates self using a closure taking self by mutable reference, passing it along the method chain. Read more
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fn observe<F>(self, f: F) -> Self
where F: FnOnce(&Self), Self: Sized,

Observes the value of self passing it along unmodified. Useful in a long method chain. Read more
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fn into_<T>(self, _: PhantomData<fn() -> T>) -> T
where Self: Into<T>,

Performs a conversion using Into. Read more
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fn as_ref_<T>(&self) -> &T
where Self: AsRef<T>, T: ?Sized,

Performs a reference to reference conversion using AsRef, using the turbofish .as_ref_::<_>() syntax. Read more
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fn as_mut_<T>(&mut self) -> &mut T
where Self: AsMut<T>, T: ?Sized,

Performs a mutable reference to mutable reference conversion using AsMut, using the turbofish .as_mut_::<_>() syntax. Read more
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fn drop_(self)
where Self: Sized,

Drops self using method notation. Alternative to std::mem::drop. Read more
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impl<T> StructuralExt for T
where T: ?Sized,

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fn field_<'a, P>( &'a self, path: P, ) -> NormalizeFieldsOut<Result<&'a P::Ty, P::Err>>
where P: RevGetFieldImpl<'a, Self>, Result<&'a P::Ty, P::Err>: NormalizeFields,

Gets a reference to a field,determined by path. Read more
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fn fields<'a, P>(&'a self, path: P) -> RevGetMultiFieldOut<'a, P, Self>
where P: RevGetMultiField<'a, Self>,

Gets references to multiple fields,determined by path. Read more
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fn cloned_fields<'a, P>( &'a self, path: P, ) -> ClonedOut<RevGetMultiFieldOut<'a, P, Self>>
where P: RevGetMultiField<'a, Self>, RevGetMultiFieldOut<'a, P, Self>: Cloned,

Gets clones of multiple fields,determined by path. Read more
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fn field_mut<'a, P>( &'a mut self, path: P, ) -> NormalizeFieldsOut<Result<&'a mut P::Ty, P::Err>>
where P: RevGetFieldMutImpl<'a, Self>, Result<&'a mut P::Ty, P::Err>: NormalizeFields,

Gets a mutable reference to a field,determined by path. Read more
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fn fields_mut<'a, P>( &'a mut self, path: P, ) -> RevGetMultiFieldMutOut<'a, P, Self>
where P: RevGetMultiFieldMut<'a, Self>,

Gets mutable references to multiple fields,determined by path. Read more
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fn into_field<P>(self, path: P) -> NormalizeFieldsOut<Result<P::Ty, P::Err>>
where P: RevIntoFieldImpl<Self>, P::Ty: Sized, Result<P::Ty, P::Err>: NormalizeFields, Self: Sized,

Converts ´self´ into a field,determined by path. Read more
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fn into_fields<P>(self, path: P) -> RevIntoMultiFieldOut<P, Self>
where P: RevIntoMultiField<Self>, Self: Sized,

Converts self into multiple fields by value. Read more
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fn is_variant<P>(&self, _path: P) -> bool
where P: IsTStr, Self: IsVariant<P>,

Checks whether an enum is a particular variant. Read more
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fn into_struc<U>(self) -> U
where Self: IntoStructural<U>,

Converts this into another structural type using IntoStructural. Read more
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fn try_into_struc<U>(self) -> Result<U, TryFromError<Self, Self::Error>>
where Self: TryIntoStructural<U>,

Performs a fallible conversion into another structural type using TryIntoStructural. 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<T, U> TryInto<U> for T
where U: TryFrom<T>,

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

The error type returned when the conversion fails.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion
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impl<This, T> TryIntoStructural<T> for This
where T: TryFromStructural<This>,

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type Error = <T as TryFromStructural<This>>::Error

The error parameter of TryFromError, returned from try_into_structural on conversion error.
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fn try_into_structural( self, ) -> Result<T, TryFromError<This, <This as TryIntoStructural<T>>::Error>>

Performs the conversion
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impl<T> TypeIdentity for T
where T: ?Sized,

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type Type = T

The same type as Self. Read more
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fn into_type_val(self) -> Self::Type
where Self: Sized, Self::Type: Sized,

Converts a value back to the original type.
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fn into_type_ref(&self) -> &Self::Type

Converts a reference back to the original type.
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fn into_type_mut(&mut self) -> &mut Self::Type

Converts a mutable reference back to the original type.
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fn into_type_box(self: Box<Self>) -> Box<Self::Type>

Converts a box back to the original type.
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fn into_type_arc(this: Arc<Self>) -> Arc<Self::Type>

Converts an Arc back to the original type.
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fn into_type_rc(this: Rc<Self>) -> Rc<Self::Type>

Converts an Rc back to the original type.
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fn from_type_val(this: Self::Type) -> Self
where Self: Sized, Self::Type: Sized,

Converts a value back to the original type.
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fn from_type_ref(this: &Self::Type) -> &Self

Converts a reference back to the original type.
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fn from_type_mut(this: &mut Self::Type) -> &mut Self

Converts a mutable reference back to the original type.
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fn from_type_box(this: Box<Self::Type>) -> Box<Self>

Converts a box back to the original type.
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fn from_type_arc(this: Arc<Self::Type>) -> Arc<Self>

Converts an Arc back to the original type.
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fn from_type_rc(this: Rc<Self::Type>) -> Rc<Self>

Converts an Rc back to the original type.
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impl<This, T> Array0<T> for This
where This: ?Sized,

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impl<This, V, T> Array0Variant<T, V> for This
where This: ?Sized,

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impl<This, T> ArrayMove0<T> for This
where This: ?Sized,