namespace EC.Helper.RabbitFunc.Syntax;

internal abstract class Token
{
    private TokenKind kind;

    protected Token(TokenKind kind)
    {
        this.kind = kind;
    }

    public abstract string Text { get; }

    public TokenKind Kind => kind;

    public virtual double Value
    {
        get => throw new System.NotSupportedException();
    }

    public static Token Error(string message)
    {
        return new ErrorToken(message);
    }

    public static Token Operator(TokenKind kind, string @operator, byte precedence)
    {
        return new OperatorToken(kind, @operator, precedence);
    }

    public static Token Symbol(TokenKind kind, string symbol)
    {
        return new SymbolToken(kind, symbol);
    }

    public static Token Constant(double value)
    {
        return new ConstantToken(value);
    }

    public static Token Comment(string text)
    {
        return new CommentToken(text);
    }

    public static Token Identifier(string name)
    {
        return new IdentifierToken(name);
    }

    public override string ToString()
    {
        return Text.ToString();
    }
}