[][src]Struct rustc_middle::ty::TypeFlags

pub struct TypeFlags {
    bits: u32,
}

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.

Fields

bits: u32

Implementations

impl TypeFlags[src]

pub const HAS_TY_PARAM: TypeFlags[src]

Does this have Param?

pub const HAS_RE_PARAM: TypeFlags[src]

Does this have ReEarlyBound?

pub const HAS_CT_PARAM: TypeFlags[src]

Does this have ConstKind::Param?

pub const NEEDS_SUBST: TypeFlags[src]

pub const HAS_TY_INFER: TypeFlags[src]

Does this have Infer?

pub const HAS_RE_INFER: TypeFlags[src]

Does this have ReVar?

pub const HAS_CT_INFER: TypeFlags[src]

Does this have ConstKind::Infer?

pub const NEEDS_INFER: TypeFlags[src]

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

pub const HAS_TY_PLACEHOLDER: TypeFlags[src]

Does this have Placeholder?

pub const HAS_RE_PLACEHOLDER: TypeFlags[src]

Does this have RePlaceholder?

pub const HAS_CT_PLACEHOLDER: TypeFlags[src]

Does this have ConstKind::Placeholder?

pub const HAS_FREE_LOCAL_REGIONS: TypeFlags[src]

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

pub const HAS_FREE_LOCAL_NAMES: TypeFlags[src]

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

pub const HAS_TY_PROJECTION: TypeFlags[src]

Does this have Projection?

pub const HAS_TY_OPAQUE: TypeFlags[src]

Does this have Opaque?

pub const HAS_CT_PROJECTION: TypeFlags[src]

Does this have ConstKind::Unevaluated?

pub const HAS_PROJECTION: TypeFlags[src]

Could this type be normalized further?

pub const HAS_ERROR: TypeFlags[src]

Is an error type/const reachable?

pub const HAS_FREE_REGIONS: TypeFlags[src]

Does this have any region that "appears free" in the type? Basically anything but ReLateBound and ReErased.

pub const HAS_RE_LATE_BOUND: TypeFlags[src]

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

pub const HAS_RE_ERASED: TypeFlags[src]

Does this have any ReErased regions?

pub const STILL_FURTHER_SPECIALIZABLE: TypeFlags[src]

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

pub const fn empty() -> TypeFlags[src]

Returns an empty set of flags

pub const fn all() -> TypeFlags[src]

Returns the set containing all flags.

pub const fn bits(&self) -> u32[src]

Returns the raw value of the flags currently stored.

pub fn from_bits(bits: u32) -> Option<TypeFlags>[src]

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) -> TypeFlags[src]

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

pub const unsafe fn from_bits_unchecked(bits: u32) -> TypeFlags[src]

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

pub const fn is_empty(&self) -> bool[src]

Returns true if no flags are currently stored.

pub const fn is_all(&self) -> bool[src]

Returns true if all flags are currently set.

pub const fn intersects(&self, other: TypeFlags) -> bool[src]

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

pub const fn contains(&self, other: TypeFlags) -> bool[src]

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

pub fn insert(&mut self, other: TypeFlags)[src]

Inserts the specified flags in-place.

pub fn remove(&mut self, other: TypeFlags)[src]

Removes the specified flags in-place.

pub fn toggle(&mut self, other: TypeFlags)[src]

Toggles the specified flags in-place.

pub fn set(&mut self, other: TypeFlags, value: bool)[src]

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

Trait Implementations

impl Binary for TypeFlags[src]

impl BitAnd<TypeFlags> for TypeFlags[src]

type Output = TypeFlags

The resulting type after applying the & operator.

fn bitand(self, other: TypeFlags) -> TypeFlags[src]

Returns the intersection between the two sets of flags.

impl BitAndAssign<TypeFlags> for TypeFlags[src]

fn bitand_assign(&mut self, other: TypeFlags)[src]

Disables all flags disabled in the set.

impl BitOr<TypeFlags> for TypeFlags[src]

type Output = TypeFlags

The resulting type after applying the | operator.

fn bitor(self, other: TypeFlags) -> TypeFlags[src]

Returns the union of the two sets of flags.

impl BitOrAssign<TypeFlags> for TypeFlags[src]

fn bitor_assign(&mut self, other: TypeFlags)[src]

Adds the set of flags.

impl BitXor<TypeFlags> for TypeFlags[src]

type Output = TypeFlags

The resulting type after applying the ^ operator.

fn bitxor(self, other: TypeFlags) -> TypeFlags[src]

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

impl BitXorAssign<TypeFlags> for TypeFlags[src]

fn bitxor_assign(&mut self, other: TypeFlags)[src]

Toggles the set of flags.

impl Clone for TypeFlags[src]

impl Copy for TypeFlags[src]

impl Debug for TypeFlags[src]

impl Eq for TypeFlags[src]

impl Extend<TypeFlags> for TypeFlags[src]

impl FromIterator<TypeFlags> for TypeFlags[src]

impl Hash for TypeFlags[src]

impl LowerHex for TypeFlags[src]

impl Not for TypeFlags[src]

type Output = TypeFlags

The resulting type after applying the ! operator.

fn not(self) -> TypeFlags[src]

Returns the complement of this set of flags.

impl Octal for TypeFlags[src]

impl Ord for TypeFlags[src]

impl PartialEq<TypeFlags> for TypeFlags[src]

impl PartialOrd<TypeFlags> for TypeFlags[src]

impl StructuralEq for TypeFlags[src]

impl StructuralPartialEq for TypeFlags[src]

impl Sub<TypeFlags> for TypeFlags[src]

type Output = TypeFlags

The resulting type after applying the - operator.

fn sub(self, other: TypeFlags) -> TypeFlags[src]

Returns the set difference of the two sets of flags.

impl SubAssign<TypeFlags> for TypeFlags[src]

fn sub_assign(&mut self, other: TypeFlags)[src]

Disables all flags enabled in the set.

impl UpperHex for TypeFlags[src]

Auto Trait Implementations

impl RefUnwindSafe for TypeFlags

impl Send for TypeFlags

impl Sync for TypeFlags

impl Unpin for TypeFlags

impl UnwindSafe for TypeFlags

Blanket Implementations

impl<T> Any for T where
    T: 'static + ?Sized
[src]

impl<'tcx, T> ArenaAllocatable<'tcx, ()> for T where
    T: Copy
[src]

impl<T> Borrow<T> for T where
    T: ?Sized
[src]

impl<T> BorrowMut<T> for T where
    T: ?Sized
[src]

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

impl<T> From<T> for T[src]

impl<T, U> Into<U> for T where
    U: From<T>, 
[src]

impl<T> MaybeResult<T> for T[src]

type Error = !

impl<T> ToOwned for T where
    T: Clone
[src]

type Owned = T

The resulting type after obtaining ownership.

impl<T, U> TryFrom<U> for T where
    U: Into<T>, 
[src]

type Error = Infallible

The type returned in the event of a conversion error.

impl<T, U> TryInto<U> for T where
    U: TryFrom<T>, 
[src]

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

The type returned in the event of a conversion error.

impl<T> WithConstness for T[src]