///<summary>
///Calculates division
///</summary>
///<param name="divOp">Division operator that represents a tree of expressions</param>
///<returns>
///Calculated expression
///</returns>
Expression IVisitor <Expression> .visit(DivOp divOp)
{
Expression left = divOp.left.acceptVisitor(this);
Expression right = divOp.right.acceptVisitor(this);
if (left is Literal && right is Literal)
{
return(new Literal(((Literal)left).value / ((Literal)right).value));
}
return(new DivOp(left, right));
}
static void Main(string[] args)
{
Expression ex = new DivOp(new AddOp(new Variable("x"), new Literal(5)), new MultOp(new Literal(10), new Literal(20)));
Console.WriteLine((ex.acceptVisitor(new CalcExpr())).acceptVisitor(new PrintExpr()));
}