Struct rustc_type_ir::TypeFlags

source ·
pub struct TypeFlags(InternalBitFlags);
Expand description

Flags that we track on types. These flags are propagated upwards through the type during type construction, so that we can quickly check whether the type has various kinds of types in it without recursing over the type itself.

Tuple Fields§

§0: InternalBitFlags

Implementations§

source§

impl TypeFlags

source

pub const HAS_TY_PARAM: Self = _

Does this have Param?

source

pub const HAS_RE_PARAM: Self = _

Does this have ReEarlyParam?

source

pub const HAS_CT_PARAM: Self = _

Does this have ConstKind::Param?

source

pub const HAS_PARAM: Self = _

source

pub const HAS_TY_INFER: Self = _

Does this have Infer?

source

pub const HAS_RE_INFER: Self = _

Does this have ReVar?

source

pub const HAS_CT_INFER: Self = _

Does this have ConstKind::Infer?

source

pub const HAS_INFER: Self = _

Does this have inference variables? Used to determine whether inference is required.

source

pub const HAS_TY_PLACEHOLDER: Self = _

Does this have Placeholder?

source

pub const HAS_RE_PLACEHOLDER: Self = _

Does this have RePlaceholder?

source

pub const HAS_CT_PLACEHOLDER: Self = _

Does this have ConstKind::Placeholder?

source

pub const HAS_PLACEHOLDER: Self = _

Does this have placeholders?

source

pub const HAS_FREE_LOCAL_REGIONS: Self = _

true if there are “names” of regions and so forth that are local to a particular fn/inferctxt

source

pub const HAS_FREE_LOCAL_NAMES: Self = _

true if there are “names” of types and regions and so forth that are local to a particular fn

source

pub const HAS_TY_PROJECTION: Self = _

Does this have Projection?

source

pub const HAS_TY_WEAK: Self = _

Does this have Weak?

source

pub const HAS_TY_OPAQUE: Self = _

Does this have Opaque?

source

pub const HAS_TY_INHERENT: Self = _

Does this have Inherent?

source

pub const HAS_CT_PROJECTION: Self = _

Does this have ConstKind::Unevaluated?

source

pub const HAS_ALIASES: Self = _

Does this have Alias or ConstKind::Unevaluated?

Rephrased, could this term be normalized further?

source

pub const HAS_ERROR: Self = _

Is an error type/lifetime/const reachable?

source

pub const HAS_FREE_REGIONS: Self = _

Does this have any region that “appears free” in the type? Basically anything but ReBound and ReErased.

source

pub const HAS_RE_BOUND: Self = _

Does this have any ReBound regions?

source

pub const HAS_TY_BOUND: Self = _

Does this have any Bound types?

source

pub const HAS_CT_BOUND: Self = _

Does this have any ConstKind::Bound consts?

source

pub const HAS_BOUND_VARS: Self = _

Does this have any bound variables? Used to check if a global bound is safe to evaluate.

source

pub const HAS_RE_ERASED: Self = _

Does this have any ReErased regions?

source

pub const STILL_FURTHER_SPECIALIZABLE: Self = _

Does this value have parameters/placeholders/inference variables which could be replaced later, in a way that would change the results of impl specialization?

source

pub const HAS_TY_FRESH: Self = _

Does this value have InferTy::FreshTy/FreshIntTy/FreshFloatTy?

source

pub const HAS_CT_FRESH: Self = _

Does this value have InferConst::Fresh?

source

pub const HAS_TY_COROUTINE: Self = _

Does this have Coroutine or CoroutineWitness?

source

pub const HAS_BINDER_VARS: Self = _

Does this have any binders with bound vars (e.g. that need to be anonymized)?

source§

impl TypeFlags

source

pub const fn empty() -> Self

Get a flags value with all bits unset.

source

pub const fn all() -> Self

Get a flags value with all known bits set.

source

pub const fn bits(&self) -> u32

Get the underlying bits value.

The returned value is exactly the bits set in this flags value.

source

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

Convert from a bits value.

This method will return None if any unknown bits are set.

source

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

Convert from a bits value, unsetting any unknown bits.

source

pub const fn from_bits_retain(bits: u32) -> Self

Convert from a bits value exactly.

source

pub fn from_name(name: &str) -> Option<Self>

Get a flags value with the bits of a flag with the given name set.

This method will return None if name is empty or doesn’t correspond to any named flag.

source

pub const fn is_empty(&self) -> bool

Whether all bits in this flags value are unset.

source

pub const fn is_all(&self) -> bool

Whether all known bits in this flags value are set.

source

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

Whether any set bits in a source flags value are also set in a target flags value.

source

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

Whether all set bits in a source flags value are also set in a target flags value.

source

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

The bitwise or (|) of the bits in two flags values.

source

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

The intersection of a source flags value with the complement of a target flags value (&!).

This method is not equivalent to self & !other when other has unknown bits set. remove won’t truncate other, but the ! operator will.

source

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

The bitwise exclusive-or (^) of the bits in two flags values.

source

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

Call insert when value is true or remove when value is false.

source

pub const fn intersection(self, other: Self) -> Self

The bitwise and (&) of the bits in two flags values.

source

pub const fn union(self, other: Self) -> Self

The bitwise or (|) of the bits in two flags values.

source

pub const fn difference(self, other: Self) -> Self

The intersection of a source flags value with the complement of a target flags value (&!).

This method is not equivalent to self & !other when other has unknown bits set. difference won’t truncate other, but the ! operator will.

source

pub const fn symmetric_difference(self, other: Self) -> Self

The bitwise exclusive-or (^) of the bits in two flags values.

source

pub const fn complement(self) -> Self

The bitwise negation (!) of the bits in a flags value, truncating the result.

source§

impl TypeFlags

source

pub const fn iter(&self) -> Iter<TypeFlags>

Yield a set of contained flags values.

Each yielded flags value will correspond to a defined named flag. Any unknown bits will be yielded together as a final flags value.

source

pub const fn iter_names(&self) -> IterNames<TypeFlags>

Yield a set of contained named flags values.

This method is like iter, except only yields bits in contained named flags. Any unknown bits, or bits not corresponding to a contained flag will not be yielded.

Trait Implementations§

source§

impl Binary for TypeFlags

source§

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

Formats the value using the given formatter.
source§

impl BitAnd for TypeFlags

source§

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

The bitwise and (&) of the bits in two flags values.

§

type Output = TypeFlags

The resulting type after applying the & operator.
source§

impl BitAndAssign for TypeFlags

source§

fn bitand_assign(&mut self, other: Self)

The bitwise and (&) of the bits in two flags values.

source§

impl BitOr for TypeFlags

source§

fn bitor(self, other: TypeFlags) -> Self

The bitwise or (|) of the bits in two flags values.

§

type Output = TypeFlags

The resulting type after applying the | operator.
source§

impl BitOrAssign for TypeFlags

source§

fn bitor_assign(&mut self, other: Self)

The bitwise or (|) of the bits in two flags values.

source§

impl BitXor for TypeFlags

source§

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

The bitwise exclusive-or (^) of the bits in two flags values.

§

type Output = TypeFlags

The resulting type after applying the ^ operator.
source§

impl BitXorAssign for TypeFlags

source§

fn bitxor_assign(&mut self, other: Self)

The bitwise exclusive-or (^) of the bits in two flags values.

source§

impl Clone for TypeFlags

source§

fn clone(&self) -> TypeFlags

Returns a copy of the value. Read more
1.0.0 · source§

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

Performs copy-assignment from source. Read more
source§

impl Debug for TypeFlags

source§

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

Formats the value using the given formatter. Read more
source§

impl Extend<TypeFlags> for TypeFlags

source§

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

The bitwise or (|) of the bits in each flags value.

source§

fn extend_one(&mut self, item: A)

🔬This is a nightly-only experimental API. (extend_one)
Extends a collection with exactly one element.
source§

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. Read more
source§

impl Flags for TypeFlags

source§

const FLAGS: &'static [Flag<TypeFlags>] = _

The set of defined flags.
§

type Bits = u32

The underlying bits type.
source§

fn bits(&self) -> u32

Get the underlying bits value. Read more
source§

fn from_bits_retain(bits: u32) -> TypeFlags

Convert from a bits value exactly.
source§

fn empty() -> Self

Get a flags value with all bits unset.
source§

fn all() -> Self

Get a flags value with all known bits set.
source§

fn from_bits(bits: Self::Bits) -> Option<Self>

Convert from a bits value. Read more
source§

fn from_bits_truncate(bits: Self::Bits) -> Self

Convert from a bits value, unsetting any unknown bits.
source§

fn from_name(name: &str) -> Option<Self>

Get a flags value with the bits of a flag with the given name set. Read more
source§

fn iter(&self) -> Iter<Self>

Yield a set of contained flags values. Read more
source§

fn iter_names(&self) -> IterNames<Self>

Yield a set of contained named flags values. Read more
source§

fn is_empty(&self) -> bool

Whether all bits in this flags value are unset.
source§

fn is_all(&self) -> bool

Whether all known bits in this flags value are set.
source§

fn intersects(&self, other: Self) -> bool
where Self: Sized,

Whether any set bits in a source flags value are also set in a target flags value.
source§

fn contains(&self, other: Self) -> bool
where Self: Sized,

Whether all set bits in a source flags value are also set in a target flags value.
source§

fn insert(&mut self, other: Self)
where Self: Sized,

The bitwise or (|) of the bits in two flags values.
source§

fn remove(&mut self, other: Self)
where Self: Sized,

The intersection of a source flags value with the complement of a target flags value (&!). Read more
source§

fn toggle(&mut self, other: Self)
where Self: Sized,

The bitwise exclusive-or (^) of the bits in two flags values.
source§

fn set(&mut self, other: Self, value: bool)
where Self: Sized,

Call Flags::insert when value is true or Flags::remove when value is false.
source§

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

The bitwise and (&) of the bits in two flags values.
source§

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

The bitwise or (|) of the bits in two flags values.
source§

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

The intersection of a source flags value with the complement of a target flags value (&!). Read more
source§

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

The bitwise exclusive-or (^) of the bits in two flags values.
source§

fn complement(self) -> Self

The bitwise negation (!) of the bits in a flags value, truncating the result.
source§

impl FromIterator<TypeFlags> for TypeFlags

source§

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

The bitwise or (|) of the bits in each flags value.

source§

impl IntoIterator for TypeFlags

§

type Item = TypeFlags

The type of the elements being iterated over.
§

type IntoIter = Iter<TypeFlags>

Which kind of iterator are we turning this into?
source§

fn into_iter(self) -> Self::IntoIter

Creates an iterator from a value. Read more
source§

impl LowerHex for TypeFlags

source§

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

Formats the value using the given formatter.
source§

impl Not for TypeFlags

source§

fn not(self) -> Self

The bitwise negation (!) of the bits in a flags value, truncating the result.

§

type Output = TypeFlags

The resulting type after applying the ! operator.
source§

impl Octal for TypeFlags

source§

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

Formats the value using the given formatter.
source§

impl PartialEq for TypeFlags

source§

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

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

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.
source§

impl PublicFlags for TypeFlags

§

type Primitive = u32

The type of the underlying storage.
§

type Internal = InternalBitFlags

The type of the internal field on the generated flags type.
source§

impl Sub for TypeFlags

source§

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

The intersection of a source flags value with the complement of a target flags value (&!).

This method is not equivalent to self & !other when other has unknown bits set. difference won’t truncate other, but the ! operator will.

§

type Output = TypeFlags

The resulting type after applying the - operator.
source§

impl SubAssign for TypeFlags

source§

fn sub_assign(&mut self, other: Self)

The intersection of a source flags value with the complement of a target flags value (&!).

This method is not equivalent to self & !other when other has unknown bits set. difference won’t truncate other, but the ! operator will.

source§

impl UpperHex for TypeFlags

source§

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

Formats the value using the given formatter.
source§

impl Copy for TypeFlags

source§

impl Eq for TypeFlags

source§

impl StructuralPartialEq for TypeFlags

Auto Trait Implementations§

Blanket Implementations§

source§

impl<T> Aligned for T

source§

const ALIGN: Alignment = _

Alignment of Self.
source§

impl<T> Any for T
where T: 'static + ?Sized,

source§

fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
source§

impl<T> Borrow<T> for T
where T: ?Sized,

source§

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
source§

impl<T> BorrowMut<T> for T
where T: ?Sized,

source§

fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
source§

impl<T, R> CollectAndApply<T, R> for T

source§

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<_>>()).

§

type Output = R

source§

impl<Q, K> Equivalent<K> for Q
where Q: Eq + ?Sized, K: Borrow<Q> + ?Sized,

source§

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

Checks if this value is equivalent to the given key. Read more
source§

impl<Q, K> Equivalent<K> for Q
where Q: Eq + ?Sized, K: Borrow<Q> + ?Sized,

source§

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

Checks if this value is equivalent to the given key. Read more
source§

impl<Q, K> Equivalent<K> for Q
where Q: Eq + ?Sized, K: Borrow<Q> + ?Sized,

source§

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

Compare self to key and return true if they are equal.
source§

impl<T> From<T> for T

source§

fn from(t: T) -> T

Returns the argument unchanged.

source§

impl<T> Instrument for T

source§

fn instrument(self, span: Span) -> Instrumented<Self>

Instruments this type with the provided Span, returning an Instrumented wrapper. Read more
source§

fn in_current_span(self) -> Instrumented<Self>

Instruments this type with the current Span, returning an Instrumented wrapper. Read more
source§

impl<T, U> Into<U> for T
where U: From<T>,

source§

fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

source§

impl<T> Same for T

§

type Output = T

Should always be Self
source§

impl<T> ToOwned for T
where T: Clone,

§

type Owned = T

The resulting type after obtaining ownership.
source§

fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
source§

fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
source§

impl<T, U> TryFrom<U> for T
where U: Into<T>,

§

type Error = Infallible

The type returned in the event of a conversion error.
source§

fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
source§

impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

§

type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
source§

fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.
source§

impl<T> WithSubscriber for T

source§

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
source§

fn with_current_subscriber(self) -> WithDispatch<Self>

Attaches the current default Subscriber to this type, returning a WithDispatch wrapper. Read more
source§

impl<'a, T> Captures<'a> for T
where T: ?Sized,

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