Enum rustc::mir::interpret::ConstValue

pub enum ConstValue<'tcx> {
    Scalar(Scalar),
    ScalarPair(Scalar, Scalar),
    ByRef(&'tcx Allocation, Size),
}

🔬 This is a nightly-only experimental API. (rustc_private)

this crate is being loaded from the sysroot, an unstable location; did you mean to load this crate from crates.io via Cargo.toml instead?

Represents a constant value in Rust. ByVal and ScalarPair are optimizations which matches Value's optimizations for easy conversions between these two types

Variants

Scalar(Scalar)

🔬 This is a nightly-only experimental API. (rustc_private)

this crate is being loaded from the sysroot, an unstable location; did you mean to load this crate from crates.io via Cargo.toml instead?

Used only for types with layout::abi::Scalar ABI and ZSTs which use Scalar::undef()

ScalarPair(Scalar, Scalar)

🔬 This is a nightly-only experimental API. (rustc_private)

this crate is being loaded from the sysroot, an unstable location; did you mean to load this crate from crates.io via Cargo.toml instead?

Used only for types with layout::abi::ScalarPair

ByRef(&'tcx Allocation, Size)

🔬 This is a nightly-only experimental API. (rustc_private)

this crate is being loaded from the sysroot, an unstable location; did you mean to load this crate from crates.io via Cargo.toml instead?

Used only for the remaining cases. An allocation + offset into the allocation

Methods

impl<'tcx> ConstValue<'tcx>

pub fn from_byval_value(val: Value) -> Self

🔬 This is a nightly-only experimental API. (rustc_private)

this crate is being loaded from the sysroot, an unstable location; did you mean to load this crate from crates.io via Cargo.toml instead?

pub fn to_byval_value(&self) -> Option<Value>

🔬 This is a nightly-only experimental API. (rustc_private)

this crate is being loaded from the sysroot, an unstable location; did you mean to load this crate from crates.io via Cargo.toml instead?

pub fn from_scalar(val: Scalar) -> Self

🔬 This is a nightly-only experimental API. (rustc_private)

this crate is being loaded from the sysroot, an unstable location; did you mean to load this crate from crates.io via Cargo.toml instead?

pub fn to_scalar(&self) -> Option<Scalar>

🔬 This is a nightly-only experimental API. (rustc_private)

this crate is being loaded from the sysroot, an unstable location; did you mean to load this crate from crates.io via Cargo.toml instead?

pub fn to_bits(&self, size: Size) -> Option<u128>

🔬 This is a nightly-only experimental API. (rustc_private)

this crate is being loaded from the sysroot, an unstable location; did you mean to load this crate from crates.io via Cargo.toml instead?

pub fn to_ptr(&self) -> Option<Pointer>

🔬 This is a nightly-only experimental API. (rustc_private)

this crate is being loaded from the sysroot, an unstable location; did you mean to load this crate from crates.io via Cargo.toml instead?

Trait Implementations

impl<'a, 'gcx> HashStable<StableHashingContext<'a>> for ConstValue<'gcx>

fn hash_stable<W: StableHasherResult>(     &self,     hcx: &mut StableHashingContext<'a>,     hasher: &mut StableHasher<W> )

🔬 This is a nightly-only experimental API. (rustc_private)

this crate is being loaded from the sysroot, an unstable location; did you mean to load this crate from crates.io via Cargo.toml instead?

impl<'tcx> Clone for ConstValue<'tcx>

fn clone(&self) -> ConstValue<'tcx>

Returns a copy of the value.

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

Performs copy-assignment from source.

impl<'tcx> Copy for ConstValue<'tcx>

impl<'tcx> Debug for ConstValue<'tcx>

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

Formats the value using the given formatter.

impl<'tcx> Eq for ConstValue<'tcx>

fn assert_receiver_is_total_eq(&self)

impl<'tcx> PartialEq for ConstValue<'tcx>

fn eq(&self, other: &ConstValue<'tcx>) -> bool

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

fn ne(&self, other: &ConstValue<'tcx>) -> bool

This method tests for !=.

impl<'tcx> PartialOrd for ConstValue<'tcx>

fn partial_cmp(&self, other: &ConstValue<'tcx>) -> Option<Ordering>

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

fn lt(&self, other: &ConstValue<'tcx>) -> bool

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

fn le(&self, other: &ConstValue<'tcx>) -> bool

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

fn gt(&self, other: &ConstValue<'tcx>) -> bool

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

fn ge(&self, other: &ConstValue<'tcx>) -> bool

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

impl<'tcx> Ord for ConstValue<'tcx>

fn cmp(&self, other: &ConstValue<'tcx>) -> Ordering

This method returns an Ordering between self and other.

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

Compares and returns the maximum of two values.

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

Compares and returns the minimum of two values.

impl<'tcx> Encodable for ConstValue<'tcx>

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

🔬 This is a nightly-only experimental API. (rustc_private)

this crate is being loaded from the sysroot, an unstable location; did you mean to load this crate from crates.io via Cargo.toml instead?

impl<'tcx> Decodable for ConstValue<'tcx>

fn decode<__D: Decoder>(d: &mut __D) -> Result<ConstValue<'tcx>, __D::Error>

🔬 This is a nightly-only experimental API. (rustc_private)

this crate is being loaded from the sysroot, an unstable location; did you mean to load this crate from crates.io via Cargo.toml instead?

impl<'tcx> Hash for ConstValue<'tcx>

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].