Struct Context 

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

Implementations

impl Context

pub const IgnoreError: Context

true while backtracking

pub const Module: Context

Is in module code?

pub const CanBeModule: Context

pub const Strict: Context

pub const ForLoopInit: Context

pub const ForAwaitLoopInit: Context

pub const IncludeInExpr: Context

pub const InAsync: Context

If true, await expression is parsed, and “await” is treated as a keyword.

pub const InGenerator: Context

If true, yield expression is parsed, and “yield” is treated as a keyword.

pub const InStaticBlock: Context

If true, await is treated as a keyword.

pub const IsContinueAllowed: Context

pub const IsBreakAllowed: Context

pub const InType: Context

pub const ShouldNotLexLtOrGtAsType: Context

Typescript extension.

pub const InDeclare: Context

Typescript extension.

pub const InCondExpr: Context

If true, : should not be treated as a type annotation.

pub const WillExpectColonForCond: Context

pub const InClass: Context

pub const InClassField: Context

pub const InFunction: Context

pub const InsideNonArrowFunctionScope: Context

This indicates current scope or the scope out of arrow function is function declaration or function expression or not.

pub const InParameters: Context

pub const HasSuperClass: Context

pub const InPropertyName: Context

pub const InForcedJsxContext: Context

pub const AllowDirectSuper: Context

pub const IgnoreElseClause: Context

pub const DisallowConditionalTypes: Context

pub const AllowUsingDecl: Context

pub const TopLevel: Context

pub const TsModuleBlock: Context

impl Context

pub const fn empty() -> Context

Get a flags value with all bits unset.

pub const fn all() -> Context

Get a flags value with all known bits set.

pub const fn bits(&self) -> u32

Get the underlying bits value.

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

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

Convert from a bits value.

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

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

Convert from a bits value, unsetting any unknown bits.

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

Convert from a bits value exactly.

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

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: Context) -> bool

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

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

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

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

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

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

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: Context)

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

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

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

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

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

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

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

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

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: Context) -> Context

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

pub const fn complement(self) -> Context

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

impl Context

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

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<Context>

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.

impl Context

pub fn is_reserved(self, word: &Word) -> bool

pub fn is_reserved_word(self, word: &Atom) -> bool

Trait Implementations

impl Binary for Context

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

Formats the value using the given formatter.

impl BitAnd for Context

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

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

type Output = Context

The resulting type after applying the & operator.

impl BitAndAssign for Context

fn bitand_assign(&mut self, other: Context)

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

impl BitOr for Context

fn bitor(self, other: Context) -> Context

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

type Output = Context

The resulting type after applying the | operator.

impl BitOrAssign for Context

fn bitor_assign(&mut self, other: Context)

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

impl BitXor for Context

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

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

type Output = Context

The resulting type after applying the ^ operator.

impl BitXorAssign for Context

fn bitxor_assign(&mut self, other: Context)

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

impl Clone for Context

fn clone(&self) -> Context

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Context

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

Formats the value using the given formatter.

impl Default for Context

fn default() -> Context

Returns the “default value” for a type.

impl Extend<Context> for Context

fn extend<T>(&mut self, iterator: T)

where T: IntoIterator<Item = Context>,

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 Context

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

The set of defined flags.

type Bits = u32

The underlying bits type.

fn bits(&self) -> u32

Get the underlying bits value.

fn from_bits_retain(bits: u32) -> Context

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<Context> for Context

fn from_iter<T>(iterator: T) -> Context

where T: IntoIterator<Item = Context>,

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

impl IntoIterator for Context

type Item = Context

The type of the elements being iterated over.

type IntoIter = Iter<Context>

Which kind of iterator are we turning this into?

fn into_iter(self) -> <Context as IntoIterator>::IntoIter

Creates an iterator from a value.

impl LowerHex for Context

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

Formats the value using the given formatter.

impl Not for Context

fn not(self) -> Context

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

type Output = Context

The resulting type after applying the ! operator.

impl Octal for Context

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

Formats the value using the given formatter.

impl Sub for Context

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

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 = Context

The resulting type after applying the - operator.

impl SubAssign for Context

fn sub_assign(&mut self, other: Context)

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 Context

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

Formats the value using the given formatter.

impl Copy for Context

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