Struct FeatureFlag

pub struct FeatureFlag(/* private fields */);

Implementations

impl FeatureFlag

pub const TemplateLiterals: Self

transform-template-literals

pub const Literals: Self

transform-literals

pub const FunctionName: Self

transform-function-name

pub const ArrowFunctions: Self

transform-arrow-functions

pub const BlockScopedFunctions: Self

transform-block-scoped-functions

pub const Classes: Self

transform-classes

pub const ObjectSuper: Self

transform-object-super

pub const ShorthandProperties: Self

transform-shorthand-properties

pub const DuplicateKeys: Self

transform-duplicate-keys

pub const ComputedProperties: Self

transform-computed-properties

pub const ForOf: Self

transform-for-of

pub const StickyRegex: Self

transform-sticky-regex

pub const DotAllRegex: Self

transform-dotall-regex

pub const UnicodeRegex: Self

transform-unicode-regex

pub const Spread: Self

transform-spread

pub const Parameters: Self

transform-parameters

pub const Destructuring: Self

transform-destructuring

pub const BlockScoping: Self

transform-block-scoping

pub const TypeOfSymbol: Self

transform-typeof-symbol

pub const NewTarget: Self

transform-new-target

pub const Regenerator: Self

transform-regenerator

pub const ExponentiationOperator: Self

transform-exponentiation-operator

pub const AsyncToGenerator: Self

transform-async-to-generator

pub const AsyncGeneratorFunctions: Self

proposal-async-generator-functions

pub const ObjectRestSpread: Self

proposal-object-rest-spread

pub const UnicodePropertyRegex: Self

proposal-unicode-property-regex

pub const JsonStrings: Self

proposal-json-strings

pub const OptionalCatchBinding: Self

proposal-optional-catch-binding

pub const NamedCapturingGroupsRegex: Self

transform-named-capturing-groups-regex

pub const MemberExpressionLiterals: Self

transform-member-expression-literals

pub const PropertyLiterals: Self

transform-property-literals

pub const ReservedWords: Self

transform-reserved-words

pub const ExportNamespaceFrom: Self

proposal-export-namespace-from

pub const NullishCoalescing: Self

proposal-nullish-coalescing-operator

pub const LogicalAssignmentOperators: Self

proposal-logical-assignment-operators

pub const OptionalChaining: Self

proposal-optional-chaining

pub const ClassProperties: Self

proposal-class-properties

pub const NumericSeparator: Self

proposal-numeric-separator

pub const PrivateMethods: Self

proposal-private-methods

pub const ClassStaticBlock: Self

proposal-class-static-block

pub const PrivatePropertyInObject: Self

proposal-private-property-in-object

pub const UnicodeEscapes: Self

transform-unicode-escapes

pub const BugfixAsyncArrowsInClass: Self

bugfix/transform-async-arrows-in-class

pub const BugfixEdgeDefaultParam: Self

bugfix/transform-edge-default-parameters

pub const BugfixTaggedTemplateCaching: Self

bugfix/transform-tagged-template-caching

pub const BugfixSafariIdDestructuringCollisionInFunctionExpression: Self

bugfix/transform-safari-id-destructuring-collision-in-function-expression

pub const BugfixTransformEdgeFunctionName: Self

bugfix/transform-edge-function-name

pub const BugfixTransformSafariBlockShadowing: Self

bugfix/transform-safari-block-shadowing

pub const BugfixTransformSafariForShadowing: Self

bugfix/transform-safari-for-shadowing

pub const BugfixTransformV8SpreadParametersInOptionalChaining: Self

bugfix/transform-v8-spread-parameters-in-optional-chaining

impl FeatureFlag

pub const fn empty() -> Self

Get a flags value with all bits unset.

pub const fn all() -> Self

Get a flags value with all known bits set.

pub const fn bits(&self) -> u64

Get the underlying bits value.

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

pub const fn from_bits(bits: u64) -> Option<Self>

Convert from a bits value.

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

pub const fn from_bits_truncate(bits: u64) -> Self

Convert from a bits value, unsetting any unknown bits.

pub const fn from_bits_retain(bits: u64) -> Self

Convert from a bits value exactly.

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.

pub const fn is_empty(&self) -> bool

Whether all bits in this flags value are unset.

pub const fn is_all(&self) -> bool

Whether all known bits in this flags value are set.

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.

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.

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

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

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.

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

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

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

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

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

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

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

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

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.

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

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

pub const fn complement(self) -> Self

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

impl FeatureFlag

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

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.

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

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

impl Binary for FeatureFlag

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

Formats the value using the given formatter.

impl BitAnd for FeatureFlag

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

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

type Output = FeatureFlag

The resulting type after applying the & operator.

impl BitAndAssign for FeatureFlag

fn bitand_assign(&mut self, other: Self)

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

impl BitOr for FeatureFlag

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

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

type Output = FeatureFlag

The resulting type after applying the | operator.

impl BitOrAssign for FeatureFlag

fn bitor_assign(&mut self, other: Self)

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

impl BitXor for FeatureFlag

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

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

type Output = FeatureFlag

The resulting type after applying the ^ operator.

impl BitXorAssign for FeatureFlag

fn bitxor_assign(&mut self, other: Self)

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

impl Clone for FeatureFlag

fn clone(&self) -> FeatureFlag

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Default for FeatureFlag

fn default() -> FeatureFlag

Returns the “default value” for a type.

impl Extend<FeatureFlag> for FeatureFlag

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

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

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 Flags for FeatureFlag

const FLAGS: &'static [Flag<FeatureFlag>]

The set of defined flags.

type Bits = u64

The underlying bits type.

fn bits(&self) -> u64

Get the underlying bits value.

fn from_bits_retain(bits: u64) -> FeatureFlag

Convert from a bits value exactly.

fn empty() -> Self

Get a flags value with all bits unset.

fn all() -> Self

Get a flags value with all known bits set.

fn contains_unknown_bits(&self) -> bool

This method will return true if any unknown bits are set.

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

Convert from a bits value.

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

Convert from a bits value, unsetting any unknown bits.

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

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

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

Yield a set of contained flags values.

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

Yield a set of contained named flags values.

fn is_empty(&self) -> bool

Whether all bits in this flags value are unset.

fn is_all(&self) -> bool

Whether all known bits in this flags value are set.

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.

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.

fn truncate(&mut self)

where Self: Sized,

Remove any unknown bits from the flags.

fn insert(&mut self, other: Self)

where Self: Sized,

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

fn remove(&mut self, other: Self)

where Self: Sized,

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

fn toggle(&mut self, other: Self)

where Self: Sized,

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

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.

fn clear(&mut self)

where Self: Sized,

Unsets all bits in the flags.

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

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

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

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

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

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

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

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

fn complement(self) -> Self

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

impl FromIterator<FeatureFlag> for FeatureFlag

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

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

impl IntoIterator for FeatureFlag

type Item = FeatureFlag

The type of the elements being iterated over.

type IntoIter = Iter<FeatureFlag>

Which kind of iterator are we turning this into?

fn into_iter(self) -> Self::IntoIter

Creates an iterator from a value.

impl LowerHex for FeatureFlag

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

Formats the value using the given formatter.

impl Not for FeatureFlag

fn not(self) -> Self

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

type Output = FeatureFlag

The resulting type after applying the ! operator.

impl Octal for FeatureFlag

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

Formats the value using the given formatter.

impl PublicFlags for FeatureFlag

type Primitive = u64

The type of the underlying storage.

type Internal = InternalBitFlags

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

impl Sub for FeatureFlag

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 = FeatureFlag

The resulting type after applying the - operator.

impl SubAssign for FeatureFlag

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.

impl UpperHex for FeatureFlag

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

Formats the value using the given formatter.

impl Copy for FeatureFlag