Enum Operator

pub enum Operator {
    Arithmetic(ArithmeticOperator),
    Logical(LogicalOperator),
    Comparison(ComparisonOperator),
    Range,
    Comma,
    Slice,
    Dot,
    QuestionMark,
}

操作符枚举 定义了表达式中的各种操作符

Variants

Arithmetic(ArithmeticOperator)

Logical(LogicalOperator)

Comparison(ComparisonOperator)

Range

Comma

Slice

Dot

QuestionMark

Implementations

impl Operator

pub fn variant(&self) -> u8

获取操作符的变体编号 用于哈希和比较操作，为每个操作符分配唯一的数字标识

Trait Implementations

impl Clone for Operator

fn clone(&self) -> Operator

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Operator

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

Formats the value using the given formatter.

impl Display for Operator

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

Formats the value using the given formatter.

impl FromStr for Operator

fn from_str(operator: &str) -> Result<Self, Self::Err>

从字符串解析操作符 按优先级尝试解析不同类型的操作符

type Err = ParseError

The associated error which can be returned from parsing.

impl Hash for Operator

fn hash<H: Hasher>(&self, state: &mut H)

为操作符实现哈希 使用变体编号作为哈希值

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl PartialEq for Operator

fn eq(&self, other: &Operator) -> 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 Operator

impl Eq for Operator

impl IsEnabled for Operator

impl StructuralPartialEq for Operator