Struct rustc_middle::ty::adt::AdtFlags
source · pub struct AdtFlags {
bits: u16,
}
Fields§
§bits: u16
Implementations§
source§impl AdtFlags
impl AdtFlags
pub const NO_ADT_FLAGS: Self = _
sourcepub const IS_PHANTOM_DATA: Self = _
pub const IS_PHANTOM_DATA: Self = _
Indicates whether the type is PhantomData
.
sourcepub const IS_FUNDAMENTAL: Self = _
pub const IS_FUNDAMENTAL: Self = _
Indicates whether the type has a #[fundamental]
attribute.
sourcepub const IS_MANUALLY_DROP: Self = _
pub const IS_MANUALLY_DROP: Self = _
Indicates whether the type is ManuallyDrop
.
sourcepub const IS_VARIANT_LIST_NON_EXHAUSTIVE: Self = _
pub const IS_VARIANT_LIST_NON_EXHAUSTIVE: Self = _
Indicates whether the variant list of this ADT is #[non_exhaustive]
.
(i.e., this flag is never set unless this ADT is an enum).
sourcepub const IS_UNSAFE_CELL: Self = _
pub const IS_UNSAFE_CELL: Self = _
Indicates whether the type is UnsafeCell
.
sourcepub const fn from_bits(bits: u16) -> Option<Self>
pub const fn from_bits(bits: u16) -> Option<Self>
Convert from underlying bit representation, unless that representation contains bits that do not correspond to a flag.
sourcepub const fn from_bits_truncate(bits: u16) -> Self
pub const fn from_bits_truncate(bits: u16) -> Self
Convert from underlying bit representation, dropping any bits that do not correspond to flags.
sourcepub const unsafe fn from_bits_unchecked(bits: u16) -> Self
pub const unsafe fn from_bits_unchecked(bits: u16) -> Self
Convert from underlying bit representation, preserving all bits (even those not corresponding to a defined flag).
Safety
The caller of the bitflags!
macro can chose to allow or
disallow extra bits for their bitflags type.
The caller of from_bits_unchecked()
has to ensure that
all bits correspond to a defined flag or that extra bits
are valid for this bitflags type.
sourcepub const fn intersects(&self, other: Self) -> bool
pub const fn intersects(&self, other: Self) -> bool
Returns true
if there are flags common to both self
and other
.
sourcepub const fn contains(&self, other: Self) -> bool
pub const fn contains(&self, other: Self) -> bool
Returns true
if all of the flags in other
are contained within self
.
sourcepub fn set(&mut self, other: Self, value: bool)
pub fn set(&mut self, other: Self, value: bool)
Inserts or removes the specified flags depending on the passed value.
sourcepub const fn intersection(self, other: Self) -> Self
pub const fn intersection(self, other: Self) -> Self
Returns the intersection between the flags in self
and
other
.
Specifically, the returned set contains only the flags which are
present in both self
and other
.
This is equivalent to using the &
operator (e.g.
ops::BitAnd
), as in flags & other
.
sourcepub const fn union(self, other: Self) -> Self
pub const fn union(self, other: Self) -> Self
Returns the union of between the flags in self
and other
.
Specifically, the returned set contains all flags which are
present in either self
or other
, including any which are
present in both (see Self::symmetric_difference
if that
is undesirable).
This is equivalent to using the |
operator (e.g.
ops::BitOr
), as in flags | other
.
sourcepub const fn difference(self, other: Self) -> Self
pub const fn difference(self, other: Self) -> Self
Returns the difference between the flags in self
and other
.
Specifically, the returned set contains all flags present in
self
, except for the ones present in other
.
It is also conceptually equivalent to the “bit-clear” operation:
flags & !other
(and this syntax is also supported).
This is equivalent to using the -
operator (e.g.
ops::Sub
), as in flags - other
.
sourcepub const fn symmetric_difference(self, other: Self) -> Self
pub const fn symmetric_difference(self, other: Self) -> Self
Returns the symmetric difference between the flags
in self
and other
.
Specifically, the returned set contains the flags present which
are present in self
or other
, but that are not present in
both. Equivalently, it contains the flags present in exactly
one of the sets self
and other
.
This is equivalent to using the ^
operator (e.g.
ops::BitXor
), as in flags ^ other
.
sourcepub const fn complement(self) -> Self
pub const fn complement(self) -> Self
Returns the complement of this set of flags.
Specifically, the returned set contains all the flags which are
not set in self
, but which are allowed for this type.
Alternatively, it can be thought of as the set difference
between Self::all()
and self
(e.g. Self::all() - self
)
This is equivalent to using the !
operator (e.g.
ops::Not
), as in !flags
.
Trait Implementations§
source§impl BitAndAssign<AdtFlags> for AdtFlags
impl BitAndAssign<AdtFlags> for AdtFlags
source§fn bitand_assign(&mut self, other: Self)
fn bitand_assign(&mut self, other: Self)
Disables all flags disabled in the set.
source§impl BitOrAssign<AdtFlags> for AdtFlags
impl BitOrAssign<AdtFlags> for AdtFlags
source§fn bitor_assign(&mut self, other: Self)
fn bitor_assign(&mut self, other: Self)
Adds the set of flags.
source§impl BitXorAssign<AdtFlags> for AdtFlags
impl BitXorAssign<AdtFlags> for AdtFlags
source§fn bitxor_assign(&mut self, other: Self)
fn bitxor_assign(&mut self, other: Self)
Toggles the set of flags.
source§impl Extend<AdtFlags> for AdtFlags
impl Extend<AdtFlags> for AdtFlags
source§fn extend<T: IntoIterator<Item = Self>>(&mut self, iterator: T)
fn extend<T: IntoIterator<Item = Self>>(&mut self, iterator: T)
source§fn extend_one(&mut self, item: A)
fn extend_one(&mut self, item: A)
extend_one
)source§fn extend_reserve(&mut self, additional: usize)
fn extend_reserve(&mut self, additional: usize)
extend_one
)source§impl FromIterator<AdtFlags> for AdtFlags
impl FromIterator<AdtFlags> for AdtFlags
source§fn from_iter<T: IntoIterator<Item = Self>>(iterator: T) -> Self
fn from_iter<T: IntoIterator<Item = Self>>(iterator: T) -> Self
source§impl<'__ctx> HashStable<StableHashingContext<'__ctx>> for AdtFlags
impl<'__ctx> HashStable<StableHashingContext<'__ctx>> for AdtFlags
fn hash_stable( &self, __hcx: &mut StableHashingContext<'__ctx>, __hasher: &mut StableHasher )
source§impl Ord for AdtFlags
impl Ord for AdtFlags
source§impl PartialEq<AdtFlags> for AdtFlags
impl PartialEq<AdtFlags> for AdtFlags
source§impl PartialOrd<AdtFlags> for AdtFlags
impl PartialOrd<AdtFlags> for AdtFlags
1.0.0 · source§fn le(&self, other: &Rhs) -> bool
fn le(&self, other: &Rhs) -> bool
self
and other
) and is used by the <=
operator. Read moresource§impl SubAssign<AdtFlags> for AdtFlags
impl SubAssign<AdtFlags> for AdtFlags
source§fn sub_assign(&mut self, other: Self)
fn sub_assign(&mut self, other: Self)
Disables all flags enabled in the set.
impl Copy for AdtFlags
impl Eq for AdtFlags
impl StructuralEq for AdtFlags
impl StructuralPartialEq for AdtFlags
Auto Trait Implementations§
impl RefUnwindSafe for AdtFlags
impl Send for AdtFlags
impl Sync for AdtFlags
impl Unpin for AdtFlags
impl UnwindSafe for AdtFlags
Blanket Implementations§
source§impl<'tcx, T> ArenaAllocatable<'tcx, IsCopy> for Twhere
T: Copy,
impl<'tcx, T> ArenaAllocatable<'tcx, IsCopy> for Twhere T: Copy,
fn allocate_on<'a>(self, arena: &'a Arena<'tcx>) -> &'a mut T
fn allocate_from_iter<'a>( arena: &'a Arena<'tcx>, iter: impl IntoIterator<Item = T> ) -> &'a mut [T]
source§impl<T> BorrowMut<T> for Twhere
T: ?Sized,
impl<T> BorrowMut<T> for Twhere T: ?Sized,
source§fn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
source§impl<T, R> CollectAndApply<T, R> for T
impl<T, R> CollectAndApply<T, R> for T
source§impl<Tcx, T> DepNodeParams<Tcx> for Twhere
Tcx: DepContext,
T: for<'a> HashStable<StableHashingContext<'a>> + Debug,
impl<Tcx, T> DepNodeParams<Tcx> for Twhere Tcx: DepContext, T: for<'a> HashStable<StableHashingContext<'a>> + Debug,
default fn fingerprint_style() -> FingerprintStyle
source§default fn to_fingerprint(&self, tcx: Tcx) -> Fingerprint
default fn to_fingerprint(&self, tcx: Tcx) -> Fingerprint
default fn to_debug_str(&self, _: Tcx) -> String
source§default fn recover(_: Tcx, _: &DepNode) -> Option<T>
default fn recover(_: Tcx, _: &DepNode) -> Option<T>
DepNode
,
something which is needed when forcing DepNode
s during red-green
evaluation. The query system will only call this method if
fingerprint_style()
is not FingerprintStyle::Opaque
.
It is always valid to return None
here, in which case incremental
compilation will treat the query as having changed instead of forcing it.source§impl<P> IntoQueryParam<P> for P
impl<P> IntoQueryParam<P> for P
fn into_query_param(self) -> P
source§impl<T> MaybeResult<T> for T
impl<T> MaybeResult<T> for T
source§impl<'tcx, T> ToPredicate<'tcx, T> for T
impl<'tcx, T> ToPredicate<'tcx, T> for T
fn to_predicate(self, _tcx: TyCtxt<'tcx>) -> T
source§impl<Tcx, T> Value<Tcx> for Twhere
Tcx: DepContext,
impl<Tcx, T> Value<Tcx> for Twhere Tcx: DepContext,
default fn from_cycle_error( tcx: Tcx, cycle: &[QueryInfo], _guar: ErrorGuaranteed ) -> T
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: 2 bytes