Struct rustc_middle::ty::ScalarInt

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#[repr(packed(1))]
pub struct ScalarInt { data: u128, size: NonZero<u8>, }
Expand description

The raw bytes of a simple value.

This is a packed struct in order to allow this type to be optimally embedded in enums (like Scalar).

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§data: u128

The first size bytes of data are the value. Do not try to read less or more bytes than that. The remaining bytes must be 0.

§size: NonZero<u8>

Implementations§

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impl ScalarInt

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pub const TRUE: ScalarInt = _

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pub const FALSE: ScalarInt = _

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pub fn size(self) -> Size

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fn check_data(self)

Make sure the data fits in size. This is guaranteed by all constructors here, but having had this check saved us from bugs many times in the past, so keeping it around is definitely worth it.

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pub fn null(size: Size) -> Self

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pub fn is_null(self) -> bool

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pub fn try_from_uint(i: impl Into<u128>, size: Size) -> Option<Self>

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pub fn try_from_int(i: impl Into<i128>, size: Size) -> Option<Self>

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pub fn try_from_target_usize( i: impl Into<u128>, tcx: TyCtxt<'_> ) -> Option<Self>

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pub fn assert_bits(self, target_size: Size) -> u128

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pub fn to_bits(self, target_size: Size) -> Result<u128, Size>

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pub fn try_to_uint(self, size: Size) -> Result<u128, Size>

Tries to convert the ScalarInt to an unsigned integer of the given size. Fails if the size of the ScalarInt is not equal to size and returns the ScalarInts size in that case.

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pub fn try_to_u8(self) -> Result<u8, Size>

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pub fn try_to_u16(self) -> Result<u16, Size>

Tries to convert the ScalarInt to u16. Fails if the size of the ScalarInt in not equal to Size { raw: 2 } and returns the size value of the ScalarInt in that case.

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pub fn try_to_u32(self) -> Result<u32, Size>

Tries to convert the ScalarInt to u32. Fails if the size of the ScalarInt in not equal to Size { raw: 4 } and returns the size value of the ScalarInt in that case.

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pub fn try_to_u64(self) -> Result<u64, Size>

Tries to convert the ScalarInt to u64. Fails if the size of the ScalarInt in not equal to Size { raw: 8 } and returns the size value of the ScalarInt in that case.

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pub fn try_to_u128(self) -> Result<u128, Size>

Tries to convert the ScalarInt to u128. Fails if the size of the ScalarInt in not equal to Size { raw: 16 } and returns the size value of the ScalarInt in that case.

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pub fn try_to_target_usize(&self, tcx: TyCtxt<'_>) -> Result<u64, Size>

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pub fn try_to_bool(self) -> Result<bool, Size>

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pub fn try_to_int(self, size: Size) -> Result<i128, Size>

Tries to convert the ScalarInt to a signed integer of the given size. Fails if the size of the ScalarInt is not equal to size and returns the ScalarInts size in that case.

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pub fn try_to_i8(self) -> Result<i8, Size>

Tries to convert the ScalarInt to i8. Fails if the size of the ScalarInt is not equal to Size { raw: 1 } and returns the ScalarInts size in that case.

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pub fn try_to_i16(self) -> Result<i16, Size>

Tries to convert the ScalarInt to i16. Fails if the size of the ScalarInt is not equal to Size { raw: 2 } and returns the ScalarInts size in that case.

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pub fn try_to_i32(self) -> Result<i32, Size>

Tries to convert the ScalarInt to i32. Fails if the size of the ScalarInt is not equal to Size { raw: 4 } and returns the ScalarInts size in that case.

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pub fn try_to_i64(self) -> Result<i64, Size>

Tries to convert the ScalarInt to i64. Fails if the size of the ScalarInt is not equal to Size { raw: 8 } and returns the ScalarInts size in that case.

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pub fn try_to_i128(self) -> Result<i128, Size>

Tries to convert the ScalarInt to i128. Fails if the size of the ScalarInt is not equal to Size { raw: 16 } and returns the ScalarInts size in that case.

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pub fn try_to_target_isize(&self, tcx: TyCtxt<'_>) -> Result<i64, Size>

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pub fn try_to_float<F: Float>(self) -> Result<F, Size>

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pub fn try_to_f32(self) -> Result<Single, Size>

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pub fn try_to_f64(self) -> Result<Double, Size>

Trait Implementations§

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impl Clone for ScalarInt

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fn clone(&self) -> ScalarInt

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 Debug for ScalarInt

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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<D: Decoder> Decodable<D> for ScalarInt

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impl Display for ScalarInt

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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<S: Encoder> Encodable<S> for ScalarInt

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fn encode(&self, s: &mut S)

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impl From<IeeeFloat<DoubleS>> for ScalarInt

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fn from(f: Double) -> Self

Converts to this type from the input type.
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impl From<IeeeFloat<SingleS>> for ScalarInt

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fn from(f: Single) -> Self

Converts to this type from the input type.
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impl<Prov> From<ScalarInt> for Scalar<Prov>

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fn from(ptr: ScalarInt) -> Self

Converts to this type from the input type.
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impl From<bool> for ScalarInt

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fn from(u: bool) -> Self

Converts to this type from the input type.
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impl From<char> for ScalarInt

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fn from(c: char) -> Self

Converts to this type from the input type.
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impl From<u128> for ScalarInt

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fn from(u: u128) -> Self

Converts to this type from the input type.
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impl From<u16> for ScalarInt

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fn from(u: u16) -> Self

Converts to this type from the input type.
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impl From<u32> for ScalarInt

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fn from(u: u32) -> Self

Converts to this type from the input type.
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impl From<u64> for ScalarInt

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fn from(u: u64) -> Self

Converts to this type from the input type.
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impl From<u8> for ScalarInt

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fn from(u: u8) -> Self

Converts to this type from the input type.
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impl Hash for ScalarInt

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fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher. Read more
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fn hash_slice<H>(data: &[Self], state: &mut H)
where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher. Read more
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impl<CTX> HashStable<CTX> for ScalarInt

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fn hash_stable(&self, hcx: &mut CTX, hasher: &mut StableHasher)

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impl LowerHex for ScalarInt

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

Formats the value using the given formatter.
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impl Ord for ScalarInt

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fn cmp(&self, other: &ScalarInt) -> Ordering

This method returns an Ordering between self and other. Read more
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fn max(self, other: Self) -> Self
where Self: Sized,

Compares and returns the maximum of two values. Read more
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fn min(self, other: Self) -> Self
where Self: Sized,

Compares and returns the minimum of two values. Read more
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fn clamp(self, min: Self, max: Self) -> Self
where Self: Sized + PartialOrd,

Restrict a value to a certain interval. Read more
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impl PartialEq for ScalarInt

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fn eq(&self, other: &ScalarInt) -> bool

This method tests for self and other values to be equal, and is used by ==.
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fn ne(&self, other: &Rhs) -> bool

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl PartialOrd for ScalarInt

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fn partial_cmp(&self, other: &ScalarInt) -> Option<Ordering>

This method returns an ordering between self and other values if one exists. Read more
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fn lt(&self, other: &Rhs) -> bool

This method tests less than (for self and other) and is used by the < operator. Read more
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fn le(&self, other: &Rhs) -> bool

This method tests less than or equal to (for self and other) and is used by the <= operator. Read more
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fn gt(&self, other: &Rhs) -> bool

This method tests greater than (for self and other) and is used by the > operator. Read more
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fn ge(&self, other: &Rhs) -> bool

This method tests greater than or equal to (for self and other) and is used by the >= operator. Read more
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impl TryFrom<ScalarInt> for Double

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type Error = Size

The type returned in the event of a conversion error.
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fn try_from(int: ScalarInt) -> Result<Self, Size>

Performs the conversion.
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impl TryFrom<ScalarInt> for Single

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type Error = Size

The type returned in the event of a conversion error.
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fn try_from(int: ScalarInt) -> Result<Self, Size>

Performs the conversion.
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impl TryFrom<ScalarInt> for bool

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type Error = Size

The type returned in the event of a conversion error.
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fn try_from(int: ScalarInt) -> Result<Self, Size>

Performs the conversion.
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impl TryFrom<ScalarInt> for char

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type Error = CharTryFromScalarInt

The type returned in the event of a conversion error.
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fn try_from(int: ScalarInt) -> Result<Self, Self::Error>

Performs the conversion.
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impl TryFrom<ScalarInt> for u128

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type Error = Size

The type returned in the event of a conversion error.
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fn try_from(int: ScalarInt) -> Result<Self, Size>

Performs the conversion.
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impl TryFrom<ScalarInt> for u16

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type Error = Size

The type returned in the event of a conversion error.
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fn try_from(int: ScalarInt) -> Result<Self, Size>

Performs the conversion.
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impl TryFrom<ScalarInt> for u32

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type Error = Size

The type returned in the event of a conversion error.
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fn try_from(int: ScalarInt) -> Result<Self, Size>

Performs the conversion.
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impl TryFrom<ScalarInt> for u64

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type Error = Size

The type returned in the event of a conversion error.
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fn try_from(int: ScalarInt) -> Result<Self, Size>

Performs the conversion.
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impl TryFrom<ScalarInt> for u8

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type Error = Size

The type returned in the event of a conversion error.
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fn try_from(int: ScalarInt) -> Result<Self, Size>

Performs the conversion.
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impl UpperHex for ScalarInt

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

Formats the value using the given formatter.
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impl Copy for ScalarInt

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impl Eq for ScalarInt

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impl StructuralPartialEq for ScalarInt

Auto Trait 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> AnyEq for T
where T: Any + PartialEq,

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fn equals(&self, other: &(dyn Any + 'static)) -> bool

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fn as_any(&self) -> &(dyn Any + 'static)

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impl<'tcx, T> ArenaAllocatable<'tcx, IsCopy> for T
where T: Copy,

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fn allocate_on<'a>(self, arena: &'a Arena<'tcx>) -> &'a mut T

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fn allocate_from_iter<'a>( arena: &'a Arena<'tcx>, iter: impl IntoIterator<Item = T> ) -> &'a mut [T]

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impl<'tcx, T> ArenaAllocatable<'tcx, IsCopy> for T
where T: Copy,

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fn allocate_on<'a>(self, arena: &'a Arena<'tcx>) -> &'a mut T

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fn allocate_from_iter<'a>( arena: &'a Arena<'tcx>, iter: impl IntoIterator<Item = T> ) -> &'a mut [T]

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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, R> CollectAndApply<T, R> for T

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fn collect_and_apply<I, F>(iter: I, f: F) -> R
where I: Iterator<Item = T>, F: FnOnce(&[T]) -> R,

Equivalent to f(&iter.collect::<Vec<_>>()).

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type Output = R

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impl<Q, K> Comparable<K> for Q
where Q: Ord + ?Sized, K: Borrow<Q> + ?Sized,

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fn compare(&self, key: &K) -> Ordering

Compare self to key and return their ordering.
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impl<Tcx, T> DepNodeParams<Tcx> for T
where Tcx: DepContext, T: for<'a> HashStable<StableHashingContext<'a>> + Debug,

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default fn fingerprint_style() -> FingerprintStyle

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default fn to_fingerprint(&self, tcx: Tcx) -> Fingerprint

This method turns the parameters of a DepNodeConstructor into an opaque Fingerprint to be used in DepNode. Not all DepNodeParams support being turned into a Fingerprint (they don’t need to if the corresponding DepNode is anonymous).
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default fn to_debug_str(&self, _: Tcx) -> String

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default fn recover(_: Tcx, _: &DepNode) -> Option<T>

This method tries to recover the query key from the given DepNode, something which is needed when forcing DepNodes during red-green evaluation. The query system will only call this method if fingerprint_style() is not FingerprintStyle::Opaque. It is always valid to return None here, in which case incremental compilation will treat the query as having changed instead of forcing it.
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impl<Q, K> Equivalent<K> for Q
where Q: Eq + ?Sized, K: Borrow<Q> + ?Sized,

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fn equivalent(&self, key: &K) -> bool

Checks if this value is equivalent to the given key. Read more
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impl<Q, K> Equivalent<K> for Q
where Q: Eq + ?Sized, K: Borrow<Q> + ?Sized,

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fn equivalent(&self, key: &K) -> bool

Checks if this value is equivalent to the given key. Read more
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impl<Q, K> Equivalent<K> for Q
where Q: Eq + ?Sized, K: Borrow<Q> + ?Sized,

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fn equivalent(&self, key: &K) -> bool

Compare self to key and return true if they are equal.
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impl<T> Filterable for T

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fn filterable( self, filter_name: &'static str ) -> RequestFilterDataProvider<T, fn(_: DataRequest<'_>) -> bool>

Creates a filterable data provider with the given name for debugging. 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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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<P> IntoQueryParam<P> for P

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impl<T> MaybeResult<T> for T

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type Error = !

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fn from(_: Result<T, <T as MaybeResult<T>>::Error>) -> T

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fn to_result(self) -> Result<T, <T as MaybeResult<T>>::Error>

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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 drop(ptr: usize)

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type Output = T

Should always be Self
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where T: Clone,

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The resulting type after obtaining ownership.
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Creates owned data from borrowed data, usually by cloning. Read more
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default fn to_string(&self) -> String

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type Error = Infallible

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Performs the conversion.
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default fn from_cycle_error( tcx: Tcx, cycle_error: &CycleError, _guar: ErrorGuaranteed ) -> T

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where S: Into<Dispatch>,

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Note: Most layout information is completely unstable and may even differ between compilations. The only exception is types with certain repr(...) attributes. Please see the Rust Reference's “Type Layout” chapter for details on type layout guarantees.

Size: 17 bytes