Enum OperatorArity 

pub enum OperatorArity {
    Unary,
    Binary,
    None,
}

Classify a TokenKind as unary, binary, or non-operator.

Variants

Unary

A prefix operator (e.g., -, ¬).

Binary

An infix operator (e.g., +, *, →).

None

Not an operator.

Trait Implementations

impl Clone for OperatorArity

fn clone(&self) -> OperatorArity

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for OperatorArity

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

Formats the value using the given formatter.

impl PartialEq for OperatorArity

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

Tests for self and other values to be equal, and is used by ==.

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

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

impl Copy for OperatorArity

impl Eq for OperatorArity

impl StructuralPartialEq for OperatorArity