Enum HirExpr 

pub enum HirExpr {
    Empty,
    Literal(Vec<u8>),
    Class(HirClass),
    UnicodeCpClass(CodepointClass),
    Concat(Vec<HirExpr>),
    Alt(Vec<HirExpr>),
    Repeat(Box<HirRepeat>),
    Capture(Box<HirCapture>),
    Anchor(HirAnchor),
    Lookaround(Box<HirLookaround>),
    Backref(u32),
}

An HIR expression node.

Variants

Empty

Empty expression.

Literal(Vec<u8>)

A literal byte sequence.

Class(HirClass)

A byte class (set of byte ranges).

UnicodeCpClass(CodepointClass)

A Unicode codepoint class (used for efficient matching of Unicode patterns). This matches a single UTF-8 encoded codepoint and checks membership.

Concat(Vec<HirExpr>)

Concatenation.

Alt(Vec<HirExpr>)

Alternation.

Repeat(Box<HirRepeat>)

Repetition.

Capture(Box<HirCapture>)

Capture group.

Anchor(HirAnchor)

Anchor.

Lookaround(Box<HirLookaround>)

Lookaround.

Backref(u32)

Backreference.

Trait Implementations

impl Clone for HirExpr

fn clone(&self) -> HirExpr

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for HirExpr

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

Formats the value using the given formatter.