Struct rustc_parse::parser::Restrictions
source · struct Restrictions {
bits: u8,
}
Fields§
§bits: u8
Implementations§
source§impl Restrictions
impl Restrictions
pub const STMT_EXPR: Self = _
pub const NO_STRUCT_LITERAL: Self = _
pub const CONST_EXPR: Self = _
pub const ALLOW_LET: Self = _
pub const IN_IF_GUARD: Self = _
sourcepub const fn from_bits(bits: u8) -> Option<Self>
pub const fn from_bits(bits: u8) -> 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: u8) -> Self
pub const fn from_bits_truncate(bits: u8) -> Self
Convert from underlying bit representation, dropping any bits that do not correspond to flags.
sourcepub const unsafe fn from_bits_unchecked(bits: u8) -> Self
pub const unsafe fn from_bits_unchecked(bits: u8) -> 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 Binary for Restrictions
impl Binary for Restrictions
source§impl BitAnd<Restrictions> for Restrictions
impl BitAnd<Restrictions> for Restrictions
source§impl BitAndAssign<Restrictions> for Restrictions
impl BitAndAssign<Restrictions> for Restrictions
source§fn bitand_assign(&mut self, other: Self)
fn bitand_assign(&mut self, other: Self)
Disables all flags disabled in the set.
source§impl BitOr<Restrictions> for Restrictions
impl BitOr<Restrictions> for Restrictions
source§fn bitor(self, other: Restrictions) -> Self
fn bitor(self, other: Restrictions) -> Self
Returns the union of the two sets of flags.
§type Output = Restrictions
type Output = Restrictions
|
operator.source§impl BitOrAssign<Restrictions> for Restrictions
impl BitOrAssign<Restrictions> for Restrictions
source§fn bitor_assign(&mut self, other: Self)
fn bitor_assign(&mut self, other: Self)
Adds the set of flags.
source§impl BitXor<Restrictions> for Restrictions
impl BitXor<Restrictions> for Restrictions
source§impl BitXorAssign<Restrictions> for Restrictions
impl BitXorAssign<Restrictions> for Restrictions
source§fn bitxor_assign(&mut self, other: Self)
fn bitxor_assign(&mut self, other: Self)
Toggles the set of flags.
source§impl Clone for Restrictions
impl Clone for Restrictions
source§fn clone(&self) -> Restrictions
fn clone(&self) -> Restrictions
1.0.0 · source§fn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
source
. Read moresource§impl Debug for Restrictions
impl Debug for Restrictions
source§impl Extend<Restrictions> for Restrictions
impl Extend<Restrictions> for Restrictions
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<Restrictions> for Restrictions
impl FromIterator<Restrictions> for Restrictions
source§fn from_iter<T: IntoIterator<Item = Self>>(iterator: T) -> Self
fn from_iter<T: IntoIterator<Item = Self>>(iterator: T) -> Self
source§impl Hash for Restrictions
impl Hash for Restrictions
source§impl LowerHex for Restrictions
impl LowerHex for Restrictions
source§impl Not for Restrictions
impl Not for Restrictions
source§impl Octal for Restrictions
impl Octal for Restrictions
source§impl Ord for Restrictions
impl Ord for Restrictions
source§fn cmp(&self, other: &Restrictions) -> Ordering
fn cmp(&self, other: &Restrictions) -> Ordering
1.21.0 · source§fn max(self, other: Self) -> Selfwhere
Self: Sized,
fn max(self, other: Self) -> Selfwhere Self: Sized,
source§impl PartialEq<Restrictions> for Restrictions
impl PartialEq<Restrictions> for Restrictions
source§fn eq(&self, other: &Restrictions) -> bool
fn eq(&self, other: &Restrictions) -> bool
self
and other
values to be equal, and is used
by ==
.source§impl PartialOrd<Restrictions> for Restrictions
impl PartialOrd<Restrictions> for Restrictions
source§fn partial_cmp(&self, other: &Restrictions) -> Option<Ordering>
fn partial_cmp(&self, other: &Restrictions) -> Option<Ordering>
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 Sub<Restrictions> for Restrictions
impl Sub<Restrictions> for Restrictions
source§impl SubAssign<Restrictions> for Restrictions
impl SubAssign<Restrictions> for Restrictions
source§fn sub_assign(&mut self, other: Self)
fn sub_assign(&mut self, other: Self)
Disables all flags enabled in the set.
source§impl UpperHex for Restrictions
impl UpperHex for Restrictions
impl Copy for Restrictions
impl Eq for Restrictions
impl StructuralEq for Restrictions
impl StructuralPartialEq for Restrictions
Auto Trait Implementations§
impl RefUnwindSafe for Restrictions
impl Send for Restrictions
impl Sync for Restrictions
impl Unpin for Restrictions
impl UnwindSafe for Restrictions
Blanket Implementations§
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
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: 1 byte