rustc_abi::layout

Struct LayoutCalculator

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pub struct LayoutCalculator<Cx> {
    pub cx: Cx,
}

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§cx: Cx

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impl<Cx: HasDataLayout> LayoutCalculator<Cx>

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pub fn new(cx: Cx) -> Self

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pub fn scalar_pair<FieldIdx: Idx, VariantIdx: Idx>( &self, a: Scalar, b: Scalar, ) -> LayoutData<FieldIdx, VariantIdx>

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pub fn univariant<'a, FieldIdx: Idx, VariantIdx: Idx, F: Deref<Target = &'a LayoutData<FieldIdx, VariantIdx>> + Debug + Copy>( &self, fields: &IndexSlice<FieldIdx, F>, repr: &ReprOptions, kind: StructKind, ) -> Result<LayoutData<FieldIdx, VariantIdx>, LayoutCalculatorError<F>>

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pub fn layout_of_never_type<FieldIdx: Idx, VariantIdx: Idx>( &self, ) -> LayoutData<FieldIdx, VariantIdx>

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pub fn layout_of_struct_or_enum<'a, FieldIdx: Idx, VariantIdx: Idx, F: Deref<Target = &'a LayoutData<FieldIdx, VariantIdx>> + Debug + Copy>( &self, repr: &ReprOptions, variants: &IndexSlice<VariantIdx, IndexVec<FieldIdx, F>>, is_enum: bool, is_unsafe_cell: bool, scalar_valid_range: (Bound<u128>, Bound<u128>), discr_range_of_repr: impl Fn(i128, i128) -> (Integer, bool), discriminants: impl Iterator<Item = (VariantIdx, i128)>, dont_niche_optimize_enum: bool, always_sized: bool, ) -> Result<LayoutData<FieldIdx, VariantIdx>, LayoutCalculatorError<F>>

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pub fn layout_of_union<'a, FieldIdx: Idx, VariantIdx: Idx, F: Deref<Target = &'a LayoutData<FieldIdx, VariantIdx>> + Debug + Copy>( &self, repr: &ReprOptions, variants: &IndexSlice<VariantIdx, IndexVec<FieldIdx, F>>, ) -> Result<LayoutData<FieldIdx, VariantIdx>, LayoutCalculatorError<F>>

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fn layout_of_struct<'a, FieldIdx: Idx, VariantIdx: Idx, F: Deref<Target = &'a LayoutData<FieldIdx, VariantIdx>> + Debug + Copy>( &self, repr: &ReprOptions, variants: &IndexSlice<VariantIdx, IndexVec<FieldIdx, F>>, is_enum: bool, is_unsafe_cell: bool, scalar_valid_range: (Bound<u128>, Bound<u128>), always_sized: bool, present_first: VariantIdx, ) -> Result<LayoutData<FieldIdx, VariantIdx>, LayoutCalculatorError<F>>

single-variant enums are just structs, if you think about it

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fn layout_of_enum<'a, FieldIdx: Idx, VariantIdx: Idx, F: Deref<Target = &'a LayoutData<FieldIdx, VariantIdx>> + Debug + Copy>( &self, repr: &ReprOptions, variants: &IndexSlice<VariantIdx, IndexVec<FieldIdx, F>>, discr_range_of_repr: impl Fn(i128, i128) -> (Integer, bool), discriminants: impl Iterator<Item = (VariantIdx, i128)>, dont_niche_optimize_enum: bool, ) -> Result<LayoutData<FieldIdx, VariantIdx>, LayoutCalculatorError<F>>

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fn univariant_biased<'a, FieldIdx: Idx, VariantIdx: Idx, F: Deref<Target = &'a LayoutData<FieldIdx, VariantIdx>> + Debug + Copy>( &self, fields: &IndexSlice<FieldIdx, F>, repr: &ReprOptions, kind: StructKind, niche_bias: NicheBias, ) -> Result<LayoutData<FieldIdx, VariantIdx>, LayoutCalculatorError<F>>

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fn format_field_niches<'a, FieldIdx: Idx, VariantIdx: Idx, F: Deref<Target = &'a LayoutData<FieldIdx, VariantIdx>> + Debug>( &self, layout: &LayoutData<FieldIdx, VariantIdx>, fields: &IndexSlice<FieldIdx, F>, ) -> String

Trait Implementations§

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impl<Cx: Clone> Clone for LayoutCalculator<Cx>

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fn clone(&self) -> LayoutCalculator<Cx>

Returns a copy of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl<Cx: Debug> Debug for LayoutCalculator<Cx>

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fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter. Read more
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impl<Cx: Copy> Copy for LayoutCalculator<Cx>

Auto Trait Implementations§

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impl<Cx> DynSend for LayoutCalculator<Cx>
where Cx: DynSend,

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impl<Cx> DynSync for LayoutCalculator<Cx>
where Cx: DynSync,

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impl<Cx> Freeze for LayoutCalculator<Cx>
where Cx: Freeze,

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impl<Cx> RefUnwindSafe for LayoutCalculator<Cx>
where Cx: RefUnwindSafe,

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impl<Cx> Send for LayoutCalculator<Cx>
where Cx: Send,

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impl<Cx> Sync for LayoutCalculator<Cx>
where Cx: Sync,

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impl<Cx> Unpin for LayoutCalculator<Cx>
where Cx: Unpin,

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impl<Cx> UnwindSafe for LayoutCalculator<Cx>
where Cx: UnwindSafe,

Blanket Implementations§

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impl<T> Aligned for T

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const ALIGN: Alignment = _

Alignment of Self.
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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> CloneToUninit for T
where T: Clone,

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unsafe fn clone_to_uninit(&self, dst: *mut T)

🔬This is a nightly-only experimental API. (clone_to_uninit)
Performs copy-assignment from self to dst. 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> Instrument for T

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fn instrument(self, span: Span) -> Instrumented<Self>

Instruments this type with the provided Span, returning an Instrumented wrapper. Read more
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fn in_current_span(self) -> Instrumented<Self>

Instruments this type with the current Span, returning an Instrumented wrapper. Read more
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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> IntoEither for T

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fn into_either(self, into_left: bool) -> Either<Self, Self>

Converts self into a Left variant of Either<Self, Self> if into_left is true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more
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fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
where F: FnOnce(&Self) -> bool,

Converts self into a Left variant of Either<Self, Self> if into_left(&self) returns true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more
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impl<T> Pointable for T

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const ALIGN: usize = _

The alignment of pointer.
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type Init = T

The type for initializers.
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unsafe fn init(init: <T as Pointable>::Init) -> usize

Initializes a with the given initializer. Read more
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unsafe fn deref<'a>(ptr: usize) -> &'a T

Dereferences the given pointer. Read more
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unsafe fn deref_mut<'a>(ptr: usize) -> &'a mut T

Mutably dereferences the given pointer. Read more
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unsafe fn drop(ptr: usize)

Drops the object pointed to by the given pointer. Read more
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impl<T> ToOwned for T
where T: Clone,

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. 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

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impl<T> WithSubscriber for T

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fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self>
where S: Into<Dispatch>,

Attaches the provided Subscriber to this type, returning a WithDispatch wrapper. Read more
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fn with_current_subscriber(self) -> WithDispatch<Self>

Attaches the current default Subscriber to this type, returning a WithDispatch wrapper. Read more
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impl<'a, T> Captures<'a> for T
where T: ?Sized,

Layout§

Note: Unable to compute type layout, possibly due to this type having generic parameters. Layout can only be computed for concrete, fully-instantiated types.