Enum PatternAnalysis 

pub enum PatternAnalysis<'a> {
    Prefix(Cow<'a, str>),
    Exact(Cow<'a, str>),
    Alternation(Vec<String>),
    NoWhitespace,
}

The result of analyzing a regex pattern for literal-match optimizations.

Variants

Prefix(Cow<'a, str>)

^prefix -> use starts_with(prefix).

Exact(Cow<'a, str>)

^exact$ -> use == exact.

Alternation(Vec<String>)

^(a|b|c)$ -> linear scan over a small sorted set of literals.

NoWhitespace

^\S*$ -> no ECMA-262 whitespace character (see is_ecma_whitespace).

Trait Implementations

impl<'a> Debug for PatternAnalysis<'a>

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

Formats the value using the given formatter.

impl<'a> PartialEq for PatternAnalysis<'a>

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

Equality operator ==.

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

Inequality operator !=.

impl<'a> StructuralPartialEq for PatternAnalysis<'a>