rustc_ast::util::parser

Enum AssocOp

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pub enum AssocOp {

Show 23 variants    Add,
    Subtract,
    Multiply,
    Divide,
    Modulus,
    LAnd,
    LOr,
    BitXor,
    BitAnd,
    BitOr,
    ShiftLeft,
    ShiftRight,
    Equal,
    Less,
    LessEqual,
    NotEqual,
    Greater,
    GreaterEqual,
    Assign,
    AssignOp(BinOpToken),
    As,
    DotDot,
    DotDotEq,

}
Expand description

Associative operator with precedence.

This is the enum which specifies operator precedence and fixity to the parser.

Variants§

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Add

+

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Subtract

-

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Multiply

*

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Divide

/

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Modulus

%

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LAnd

&&

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LOr

||

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BitXor

^

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BitAnd

&

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BitOr

|

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ShiftLeft

<<

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ShiftRight

>>

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Equal

==

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Less

<

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LessEqual

<=

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NotEqual

!=

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Greater

>

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GreaterEqual

>=

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Assign

=

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AssignOp(BinOpToken)

?= where ? is one of the BinOpToken

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As

as

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DotDot

.. range

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DotDotEq

..= range

Implementations§

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impl AssocOp

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pub fn from_token(t: &Token) -> Option<AssocOp>

Creates a new AssocOP from a token

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pub fn from_ast_binop(op: BinOpKind) -> Self

Creates a new AssocOp from ast::BinOpKind.

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pub fn precedence(&self) -> usize

Gets the precedence of this operator

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pub fn fixity(&self) -> Fixity

Gets the fixity of this operator

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pub fn is_comparison(&self) -> bool

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pub fn is_assign_like(&self) -> bool

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pub fn to_ast_binop(&self) -> Option<BinOpKind>

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pub fn can_continue_expr_unambiguously(&self) -> bool

This operator could be used to follow a block unambiguously.

This is used for error recovery at the moment, providing a suggestion to wrap blocks with parentheses while having a high degree of confidence on the correctness of the suggestion.

Trait Implementations§

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impl Clone for AssocOp

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fn clone(&self) -> AssocOp

Returns a copy of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl Debug for AssocOp

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

Formats the value using the given formatter. Read more
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impl PartialEq for AssocOp

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fn eq(&self, other: &AssocOp) -> bool

Tests for self and other values to be equal, and is used by ==.
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fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl Copy for AssocOp

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impl StructuralPartialEq for AssocOp

Auto Trait Implementations§

Blanket Implementations§

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impl<T> Aligned for T

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const ALIGN: Alignment = _

Alignment of Self.
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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> CloneToUninit for T
where T: Clone,

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unsafe fn clone_to_uninit(&self, dst: *mut T)

🔬This is a nightly-only experimental API. (clone_to_uninit)
Performs copy-assignment from self to dst. Read more
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T> Instrument for T

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fn instrument(self, span: Span) -> Instrumented<Self>

Instruments this type with the provided Span, returning an Instrumented wrapper. Read more
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fn in_current_span(self) -> Instrumented<Self>

Instruments this type with the current Span, returning an Instrumented wrapper. Read more
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impl<T, U> Into<U> for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T> IntoEither for T

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fn into_either(self, into_left: bool) -> Either<Self, Self>

Converts self into a Left variant of Either<Self, Self> if into_left is true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more
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fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
where F: FnOnce(&Self) -> bool,

Converts self into a Left variant of Either<Self, Self> if into_left(&self) returns true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more
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impl<T> Same for T

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type Output = T

Should always be Self
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impl<T> ToOwned for T
where T: Clone,

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.
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impl<T> WithSubscriber for T

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fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self>
where S: Into<Dispatch>,

Attaches the provided Subscriber to this type, returning a WithDispatch wrapper. Read more
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fn with_current_subscriber(self) -> WithDispatch<Self>

Attaches the current default Subscriber to this type, returning a WithDispatch wrapper. Read more
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impl<'a, T> Captures<'a> for T
where T: ?Sized,

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

Size for each variant:

  • Add: 0 bytes
  • Subtract: 0 bytes
  • Multiply: 0 bytes
  • Divide: 0 bytes
  • Modulus: 0 bytes
  • LAnd: 0 bytes
  • LOr: 0 bytes
  • BitXor: 0 bytes
  • BitAnd: 0 bytes
  • BitOr: 0 bytes
  • ShiftLeft: 0 bytes
  • ShiftRight: 0 bytes
  • Equal: 0 bytes
  • Less: 0 bytes
  • LessEqual: 0 bytes
  • NotEqual: 0 bytes
  • Greater: 0 bytes
  • GreaterEqual: 0 bytes
  • Assign: 0 bytes
  • AssignOp: 1 byte
  • As: 0 bytes
  • DotDot: 0 bytes
  • DotDotEq: 0 bytes