private bool TryParseExponent(out AstNode node)
{
if (TryParseFactorialFactor(out node))
{
if (IsNext(TokenType.Exponent))
{
var op = Accept();
if (TryParseExponent(out var rhs))
{
node = new ExponentBinaryOperatorAstNode(op, node, rhs);
}
}
}
return(node != null);
}
private double Evaluate(ExponentBinaryOperatorAstNode node) => Math.Pow(Evaluate(node.Left as dynamic), Evaluate(node.Right as dynamic));
