Struct rustc_middle::ty::VariantFlags

pub struct VariantFlags {
    bits: u32,
}

Fields

bits: u32

Implementations

impl VariantFlags

pub const NO_VARIANT_FLAGS: VariantFlags

pub const IS_FIELD_LIST_NON_EXHAUSTIVE: VariantFlags

Indicates whether the field list of this variant is #[non_exhaustive].

pub const IS_RECOVERED: VariantFlags

Indicates whether this variant was obtained as part of recovering from a syntactic error. May be incomplete or bogus.

pub const fn empty() -> VariantFlags

Returns an empty set of flags

pub const fn all() -> VariantFlags

Returns the set containing all flags.

pub const fn bits(&self) -> u32

Returns the raw value of the flags currently stored.

pub fn from_bits(bits: u32) -> Option<VariantFlags>

Convert from underlying bit representation, unless that representation contains bits that do not correspond to a flag.

pub const fn from_bits_truncate(bits: u32) -> VariantFlags

Convert from underlying bit representation, dropping any bits that do not correspond to flags.

pub const unsafe fn from_bits_unchecked(bits: u32) -> VariantFlags

Convert from underlying bit representation, preserving all bits (even those not corresponding to a defined flag).

pub const fn is_empty(&self) -> bool

Returns true if no flags are currently stored.

pub const fn is_all(&self) -> bool

Returns true if all flags are currently set.

pub const fn intersects(&self, other: VariantFlags) -> bool

Returns true if there are flags common to both self and other.

pub const fn contains(&self, other: VariantFlags) -> bool

Returns true all of the flags in other are contained within self.

pub fn insert(&mut self, other: VariantFlags)

Inserts the specified flags in-place.

pub fn remove(&mut self, other: VariantFlags)

Removes the specified flags in-place.

pub fn toggle(&mut self, other: VariantFlags)

Toggles the specified flags in-place.

pub fn set(&mut self, other: VariantFlags, value: bool)

Inserts or removes the specified flags depending on the passed value.

Trait Implementations

impl Binary for VariantFlags

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

Formats the value using the given formatter.

impl BitAnd<VariantFlags> for VariantFlags

fn bitand(self, other: VariantFlags) -> VariantFlags

Returns the intersection between the two sets of flags.

type Output = VariantFlags

The resulting type after applying the & operator.

impl BitAndAssign<VariantFlags> for VariantFlags

fn bitand_assign(&mut self, other: VariantFlags)

Disables all flags disabled in the set.

impl BitOr<VariantFlags> for VariantFlags

fn bitor(self, other: VariantFlags) -> VariantFlags

Returns the union of the two sets of flags.

type Output = VariantFlags

The resulting type after applying the | operator.

impl BitOrAssign<VariantFlags> for VariantFlags

fn bitor_assign(&mut self, other: VariantFlags)

Adds the set of flags.

impl BitXor<VariantFlags> for VariantFlags

fn bitxor(self, other: VariantFlags) -> VariantFlags

Returns the left flags, but with all the right flags toggled.

type Output = VariantFlags

The resulting type after applying the ^ operator.

impl BitXorAssign<VariantFlags> for VariantFlags

fn bitxor_assign(&mut self, other: VariantFlags)

Toggles the set of flags.

impl Clone for VariantFlags

fn clone(&self) -> VariantFlags

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for VariantFlags

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

Formats the value using the given formatter.

impl Extend<VariantFlags> for VariantFlags

fn extend<T: IntoIterator<Item = VariantFlags>>(&mut self, iterator: T)

Extends a collection with the contents of an iterator.

fn extend_one(&mut self, item: A)

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

Extends a collection with exactly one element.

fn extend_reserve(&mut self, additional: usize)

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

Reserves capacity in a collection for the given number of additional elements.

impl FromIterator<VariantFlags> for VariantFlags

fn from_iter<T: IntoIterator<Item = VariantFlags>>(iterator: T) -> VariantFlags

Creates a value from an iterator.

impl Hash for VariantFlags

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<StableHashingContext<'__ctx>> for VariantFlags

fn hash_stable(
    &self,
    __hcx: &mut StableHashingContext<'__ctx>,
    __hasher: &mut StableHasher
)

impl LowerHex for VariantFlags

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

Formats the value using the given formatter.

impl Not for VariantFlags

fn not(self) -> VariantFlags

Returns the complement of this set of flags.

type Output = VariantFlags

The resulting type after applying the ! operator.

impl Octal for VariantFlags

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

Formats the value using the given formatter.

impl Ord for VariantFlags

fn cmp(&self, other: &VariantFlags) -> 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.

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

Restrict a value to a certain interval.

impl PartialEq<VariantFlags> for VariantFlags

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

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

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

This method tests for !=.

impl PartialOrd<VariantFlags> for VariantFlags

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

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

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

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

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

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

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

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

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 Sub<VariantFlags> for VariantFlags

fn sub(self, other: VariantFlags) -> VariantFlags

Returns the set difference of the two sets of flags.

type Output = VariantFlags

The resulting type after applying the - operator.

impl SubAssign<VariantFlags> for VariantFlags

fn sub_assign(&mut self, other: VariantFlags)

Disables all flags enabled in the set.

impl UpperHex for VariantFlags

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

Formats the value using the given formatter.

impl Copy for VariantFlags

impl Eq for VariantFlags

impl StructuralEq for VariantFlags

impl StructuralPartialEq for VariantFlags

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: 4 bytes