char(_:)

import _RegexParser

enum Kind

struct AST

A regex abstract syntax tree.

struct Atom

@frozen struct Character

A single extended grapheme cluster that approximates a user-perceived character.

case backreference(AST.Reference)

case backtrackingDirective(AST.Atom.BacktrackingDirective)

case callout(AST.Atom.Callout)

case caretAnchor

^

case changeMatchingOptions(AST.MatchingOptionSequence)

case dollarAnchor

$

case dot

.

case escaped(AST.Atom.EscapedBuiltin)

A built-in escaped character

case invalid

case keyboardControl(Character)

A control character

case keyboardMeta(Character)

case keyboardMetaControl(Character)

case namedCharacter(String)

A named character \N{…}

case property(AST.Atom.CharacterProperty)

A Unicode property, category, or script, including those written using POSIX syntax.

case scalar(AST.Atom.Scalar)

A Unicode scalar value written as a literal

case scalarSequence(AST.Atom.ScalarSequence)

A whitespace-separated sequence of Unicode scalar values which are implicitly splatted out.

case subpattern(AST.Reference)