Enum Assoc 

#[repr(u8)]
pub enum Assoc {
    None = 0,
    Left = 1,
    Right = 2,
}

Operator associativity classification.

Assoc determines how operators of the same precedence are grouped during parsing. It supports left-, right-, and non-associative operators.

Variant	Description
Assoc::None	Non-associative — cannot chain with itself.
Assoc::Left	Left-associative — groups from left to right.
Assoc::Right	Right-associative — groups from right to left.

Variants

None = 0

Non-associative operator.

Left = 1

Left-associative operator.

Right = 2

Right-associative operator.

Implementations

impl Assoc

pub const COUNT: usize = 3usize

Total number of associativity variants.

pub const STRS: &[&str]

Canonical string representations for each variant.

Trait Implementations

impl Clone for Assoc

fn clone(&self) -> Assoc

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Assoc

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

Formats the value using the given formatter.

impl Display for Assoc

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

Formats the associativity as its canonical lowercase name.

impl From<Assoc> for String

fn from(a: Assoc) -> Self

Converts an Assoc variant into its canonical lowercase string.

impl From<Assoc> for usize

fn from(a: Assoc) -> Self

Converts an Assoc variant into its numeric discriminant.

impl FromStr for Assoc

type Err = ParseAssocError

The associated error which can be returned from parsing.

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

Parses a string s to return a value of this type.

impl PartialEq for Assoc

fn eq(&self, other: &Assoc) -> 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 TryFrom<&str> for Assoc

type Error = ParseAssocError

The type returned in the event of a conversion error.

fn try_from(s: &str) -> Result<Self, Self::Error>

Performs the conversion.

impl TryFrom<SmartString<LazyCompact>> for Assoc

type Error = ParseAssocError

The type returned in the event of a conversion error.

fn try_from(s: String) -> Result<Self, Self::Error>

Performs the conversion.

impl Copy for Assoc

impl Eq for Assoc

impl StructuralPartialEq for Assoc