rustc_middle::ty::consts::int

Struct 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>

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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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fn raw(data: u128, size: Size) -> Self

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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 truncate_from_uint(i: impl Into<u128>, size: Size) -> (Self, bool)

Returns the truncated result, and whether truncation changed the value.

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

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

Returns the truncated result, and whether truncation changed the value.

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

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

Try to convert this ScalarInt to the raw underlying bits. Fails if the size is wrong. Generally a wrong size should lead to a panic, but Miri sometimes wants to be resilient to size mismatches, so the interpreter will generally use this try method.

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

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pub fn to_bits_unchecked(self) -> u128

Extracts the bits from the scalar without checking the size.

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pub fn to_uint(self, size: Size) -> u128

Converts the ScalarInt to an unsigned integer of the given size. Panics if the size of the ScalarInt is not equal to size.

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pub fn to_u8(self) -> u8

Converts the ScalarInt to u8. Panics if the size of the ScalarIntin not equal to 1 byte.

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pub fn to_u16(self) -> u16

Converts the ScalarInt to u16. Panics if the size of the ScalarInt in not equal to 2 bytes.

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pub fn to_u32(self) -> u32

Converts the ScalarInt to u32. Panics if the size of the ScalarInt in not equal to 4 bytes.

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pub fn to_u64(self) -> u64

Converts the ScalarInt to u64. Panics if the size of the ScalarInt in not equal to 8 bytes.

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pub fn to_u128(self) -> u128

Converts the ScalarInt to u128. Panics if the size of the ScalarInt in not equal to 16 bytes.

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

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

Converts the ScalarInt to bool. Panics if the size of the ScalarInt is not equal to 1 byte. Errors if it is not a valid bool.

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pub fn to_int(self, size: Size) -> i128

Converts the ScalarInt to a signed integer of the given size. Panics if the size of the ScalarInt is not equal to size.

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pub fn to_i8(self) -> i8

Converts the ScalarInt to i8. Panics if the size of the ScalarInt is not equal to 1 byte.

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pub fn to_i16(self) -> i16

Converts the ScalarInt to i16. Panics if the size of the ScalarInt is not equal to 2 bytes.

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pub fn to_i32(self) -> i32

Converts the ScalarInt to i32. Panics if the size of the ScalarInt is not equal to 4 bytes.

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pub fn to_i64(self) -> i64

Converts the ScalarInt to i64. Panics if the size of the ScalarInt is not equal to 8 bytes.

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pub fn to_i128(self) -> i128

Converts the ScalarInt to i128. Panics if the size of the ScalarInt is not equal to 16 bytes.

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

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pub fn to_float<F: Float>(self) -> F

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pub fn to_f16(self) -> Half

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pub fn to_f32(self) -> Single

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pub fn to_f64(self) -> Double

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pub fn to_f128(self) -> Quad

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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<HalfS>> for ScalarInt

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fn from(f: Half) -> Self

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

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fn from(f: Quad) -> 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 From<ScalarInt> for Double

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fn from(int: ScalarInt) -> Self

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

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fn from(int: ScalarInt) -> Self

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

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fn from(int: ScalarInt) -> Self

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

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fn from(int: ScalarInt) -> 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<ScalarInt> for u128

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fn from(int: ScalarInt) -> Self

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

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fn from(int: ScalarInt) -> Self

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

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fn from(int: ScalarInt) -> Self

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

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fn from(int: ScalarInt) -> Self

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

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fn from(int: 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. Read more
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impl PartialEq for ScalarInt

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

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl TryFrom<ScalarInt> for bool

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type Error = ()

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

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 UpperHex 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 Copy for ScalarInt

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impl Eq for ScalarInt

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impl StructuralPartialEq for ScalarInt

Auto Trait Implementations§

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

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

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

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

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fn allocate_from_iter( arena: &'tcx Arena<'tcx>, iter: impl IntoIterator<Item = T>, ) -> &'tcx 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> 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, 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<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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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<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 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> Same for T

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type Output = T

Should always be Self
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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> ToString for T
where T: Display + ?Sized,

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default fn to_string(&self) -> String

Converts the given value to a String. 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<I, T, U> Upcast<I, U> for T
where U: UpcastFrom<I, T>,

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fn upcast(self, interner: I) -> U

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impl<I, T> UpcastFrom<I, T> for T

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fn upcast_from(from: T, _tcx: I) -> T

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impl<V, T> VZip<V> for T
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fn vzip(self) -> V

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impl<Tcx, T> Value<Tcx> for T
where Tcx: DepContext,

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

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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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Layout§

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