Enum PairWise 

pub enum PairWise {
    Paren,
    Curly,
    Square,
}

Represents either the left or right Kind of a PairWise set.

Certain kinds have a PairWise equivalent:

• Kind::LeftParen has Kind::RightParen
• Kind::LeftCurly has Kind::RightCurly
• Kind::LeftSquare has Kind::RightSquare

The PairWise enum represents either one of the above listed Kinds. So for example PairWise::Paren represents both the Kind::LeftParen and Kind::RightParen.

Example

use css_lexer::*;
let mut lexer = Lexer::new(&EmptyAtomSet::ATOMS, "(a)");
{
    let token = lexer.advance();
    assert_eq!(token, PairWise::Paren);
    assert_eq!(token, Kind::LeftParen);
    let pair: PairWise = token.to_pairwise().unwrap();
    let mut close_token;
    loop {
        close_token = lexer.advance();
        if close_token == pair {
            break;
        }
    }
    assert_eq!(close_token, Kind::RightParen);
}

Variants

Paren

Curly

Square

Implementations

impl PairWise

pub fn from_token(token: &Token) -> Option<PairWise>

pub fn start(&self) -> Token

pub fn end(&self) -> Token

Trait Implementations

impl Clone for PairWise

fn clone(&self) -> PairWise

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for PairWise

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

Formats the value using the given formatter.

impl Hash for PairWise

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

where __H: Hasher,

Feeds this value into the given Hasher.

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 Ord for PairWise

fn cmp(&self, other: &PairWise) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

impl PartialEq<Kind> for PairWise

fn eq(&self, other: &Kind) -> 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 PartialEq<PairWise> for Token

fn eq(&self, other: &PairWise) -> 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 PartialEq for PairWise

fn eq(&self, other: &PairWise) -> 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 PartialOrd for PairWise

fn partial_cmp(&self, other: &PairWise) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

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

Tests less than (for self and other) and is used by the < operator.

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

Tests less than or equal to (for self and other) and is used by the <= operator.

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

Tests greater than (for self and other) and is used by the > operator.

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

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl Copy for PairWise

impl Eq for PairWise

impl StructuralPartialEq for PairWise