Enum rustc_ast::util::parser::AssocOp

pub enum AssocOp {
    Add,
    Subtract,
    Multiply,
    Divide,
    Modulus,
    LAnd,
    LOr,
    BitXor,
    BitAnd,
    BitOr,
    ShiftLeft,
    ShiftRight,
    Equal,
    Less,
    LessEqual,
    NotEqual,
    Greater,
    GreaterEqual,
    Assign,
    AssignOp(BinOpToken),
    As,
    DotDot,
    DotDotEq,
}

Associative operator with precedence.

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

Variants

Add

+

Subtract

-

Multiply

*

Divide

/

Modulus

%

LAnd

&&

LOr

||

BitXor

^

BitAnd

&

BitOr

|

ShiftLeft

<<

ShiftRight

>>

Equal

==

Less

<

LessEqual

<=

NotEqual

!=

Greater

>

GreaterEqual

>=

Assign

=

AssignOp(BinOpToken)

?= where ? is one of the BinOpToken

As

as

DotDot

.. range

DotDotEq

..= range

Implementations

impl AssocOp

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

Creates a new AssocOP from a token

pub fn from_ast_binop(op: BinOpKind) -> Self

Creates a new AssocOp from ast::BinOpKind.

pub fn precedence(&self) -> usize

Gets the precedence of this operator

pub fn fixity(&self) -> Fixity

Gets the fixity of this operator

pub fn is_comparison(&self) -> bool

pub fn is_assign_like(&self) -> bool

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

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

impl Clone for AssocOp

fn clone(&self) -> AssocOp

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for AssocOp

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

Formats the value using the given formatter.

impl PartialEq<AssocOp> for AssocOp

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

This method tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Copy for AssocOp

impl StructuralPartialEq for AssocOp

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