Struct rustc_middle::ty::consts::int::ScalarInt

#[repr(packed)]
pub struct ScalarInt {
    data: u128,
    size: u8,
}

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).

Fields

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: u8

Implementations

impl ScalarInt

pub const TRUE: ScalarInt

pub const FALSE: ScalarInt

pub const ZST: ScalarInt

pub fn size(self) -> Size

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.

pub fn null(size: Size) -> Self

pub fn is_null(self) -> bool

pub(crate) fn ptr_sized_op<E>(
    self,
    dl: &TargetDataLayout,
    f_int: impl FnOnce(u64) -> Result<u64, E>
) -> Result<Self, E>

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

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

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

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

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

Trait Implementations

impl Clone for ScalarInt

fn clone(&self) -> ScalarInt

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for ScalarInt

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

Formats the value using the given formatter.

impl<D: Decoder> Decodable<D> for ScalarInt

fn decode(d: &mut D) -> Result<ScalarInt, D::Error>

impl<S: Encoder> Encodable<S> for ScalarInt

fn encode(&self, s: &mut S) -> Result<(), S::Error>

impl From<IeeeFloat<DoubleS>> for ScalarInt

fn from(f: Double) -> Self

Performs the conversion.

impl From<IeeeFloat<SingleS>> for ScalarInt

fn from(f: Single) -> Self

Performs the conversion.

impl<Tag> From<ScalarInt> for Scalar<Tag>

fn from(ptr: ScalarInt) -> Self

Performs the conversion.

impl From<bool> for ScalarInt

fn from(u: bool) -> Self

Performs the conversion.

impl From<char> for ScalarInt

fn from(c: char) -> Self

Performs the conversion.

impl From<u128> for ScalarInt

fn from(u: u128) -> Self

Performs the conversion.

impl From<u16> for ScalarInt

fn from(u: u16) -> Self

Performs the conversion.

impl From<u32> for ScalarInt

fn from(u: u32) -> Self

Performs the conversion.

impl From<u64> for ScalarInt

fn from(u: u64) -> Self

Performs the conversion.

impl From<u8> for ScalarInt

fn from(u: u8) -> Self

Performs the conversion.

impl Hash for ScalarInt

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

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H) where
    H: Hasher, 

Feeds a slice of this type into the given Hasher.

impl<CTX> HashStable<CTX> for ScalarInt

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

impl LowerHex for ScalarInt

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

Formats the value using the given formatter.

impl Ord for ScalarInt

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

This method returns an Ordering between self and other.

#[must_use]

fn max(self, other: Self) -> Self

Compares and returns the maximum of two values.

#[must_use]

fn min(self, other: Self) -> Self

Compares and returns the minimum of two values.

#[must_use]

fn clamp(self, min: Self, max: Self) -> Self

Restrict a value to a certain interval.

impl PartialEq<ScalarInt> for ScalarInt

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

This method tests for self and other values to be equal, and is used by ==.

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

This method tests for !=.

impl PartialOrd<ScalarInt> for ScalarInt

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

This method returns an ordering between self and other values if one exists.

#[must_use]

fn lt(&self, other: &Rhs) -> bool

This method tests less than (for self and other) and is used by the < operator.

#[must_use]

fn le(&self, other: &Rhs) -> bool

This method tests less than or equal to (for self and other) and is used by the <= operator.

#[must_use]

fn gt(&self, other: &Rhs) -> bool

This method tests greater than (for self and other) and is used by the > operator.

#[must_use]

fn ge(&self, other: &Rhs) -> bool

This method tests greater than or equal to (for self and other) and is used by the >= operator.

impl UpperHex for ScalarInt

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

Formats the value using the given formatter.

impl Copy for ScalarInt

impl Eq for ScalarInt

impl StructuralEq for ScalarInt

impl StructuralPartialEq for ScalarInt