module CanonSharp.Parser.LexicalAnalyzer.RegularExpression

type RegularExpression =
    | EmptyExpression
    | SymbolExpression of symbol: char
    | AlternationExpression of left: RegularExpression * right : RegularExpression
    | ConcatenationExpression of first: RegularExpression * second : RegularExpression
    | KleeneExpression of expression: RegularExpression

let convertToNondeterministicFiniteAutomation expression =
    match expression with
    | EmptyExpression emptyExpression ->